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Search for "composition" in Full Text gives 1100 result(s) in Beilstein Journal of Nanotechnology. Showing first 200.

Nanotechnological approaches in the treatment of schistosomiasis: an overview

  • Lucas Carvalho,
  • Michelle Sarcinelli and
  • Beatriz Patrício

Beilstein J. Nanotechnol. 2024, 15, 13–25, doi:10.3762/bjnano.15.2

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  • . mansoni in vivo. After that, the same group, in 2015, developed lipid nanocapsules positively charged (cationic) and tested them with and without oleic acid as a membrane permeabilizer in the composition. Both nanoformulations were able to reduce the whole treatment of schistosomiasis in mice to one
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Published 03 Jan 2024

Fluorescent bioinspired albumin/polydopamine nanoparticles and their interactions with Escherichia coli cells

  • Eloïse Equy,
  • Jordana Hirtzel,
  • Sophie Hellé,
  • Béatrice Heurtault,
  • Eric Mathieu,
  • Morgane Rabineau,
  • Vincent Ball and
  • Lydie Ploux

Beilstein J. Nanotechnol. 2023, 14, 1208–1224, doi:10.3762/bjnano.14.100

Graphical Abstract
  • ). The dispersion was changed by changing the ratio of BSA, but the reaction yield was maintained. This suggests that BSA acted as a “knife” changing the size, but not the composition, of the nanoparticles. The suspension of BSA/PDA NPs was stable over two years of storage in Tris buffer in the dark at
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Published 22 Dec 2023

A combined gas-phase dissociative ionization, dissociative electron attachment and deposition study on the potential FEBID precursor [Au(CH3)2Cl]2

  • Elif Bilgilisoy,
  • Ali Kamali,
  • Thomas Xaver Gentner,
  • Gerd Ballmann,
  • Sjoerd Harder,
  • Hans-Peter Steinrück,
  • Hubertus Marbach and
  • Oddur Ingólfsson

Beilstein J. Nanotechnol. 2023, 14, 1178–1199, doi:10.3762/bjnano.14.98

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  • composition and morphology of FEBID deposits fabricated in an ultrahigh-vacuum (UHV) chamber were explored on different surfaces and at varied beam currents. In the gas phase, dissociative ionization was found to lead to significant carbon loss from this precursor, and about 50% of the chlorine was on average
  • electron beam energy and current, the substrate material, the environment inside the deposition chamber, and the composition of the precursor [14][15][16][17]. Heretofore, various chemical vapor deposition (CVD) precursors have been applied for FEBID depositions. For gold nanostructures, these include, for
  • -vacuum (UHV) surface science studies and mass spectrometry in high-vacuum (HV) gas-phase investigations [27][28]. In this context, surface science experiments allow for electron-dose-dependent studies of the elemental composition of the deposit, and desorbing ligands may be monitored by means of mass
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Published 06 Dec 2023

Elasticity, an often-overseen parameter in the development of nanoscale drug delivery systems

  • Agnes-Valencia Weiss and
  • Marc Schneider

Beilstein J. Nanotechnol. 2023, 14, 1149–1156, doi:10.3762/bjnano.14.95

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  • . Furthermore, it should be common that measurement conditions such as temperature, applied force, and indentation speed are provided. Also, if measurements are performed in water or in buffer, the composition needs to be given in order to achieve better comparability. In Table 2, the parameters that need to be
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Published 23 Nov 2023

Curcumin-loaded albumin submicron particles with potential as a cancer therapy: an in vitro study

  • Nittiya Suwannasom,
  • Netsai Sriaksorn,
  • Chutamas Thepmalee,
  • Krissana Khoothiam,
  • Ausanai Prapan,
  • Hans Bäumler and
  • Chonthida Thephinlap

Beilstein J. Nanotechnol. 2023, 14, 1127–1140, doi:10.3762/bjnano.14.93

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  • cancer cells, likely attributed to particle uptake through endocytosis pathways, including phagocytosis and macropinocytosis [51]. The uptake process depends on cell membrane and particle properties, including size, shape, composition, and surface properties. These factors play a crucial role in particle
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Published 21 Nov 2023

Properties of tin oxide films grown by atomic layer deposition from tin tetraiodide and ozone

  • Kristjan Kalam,
  • Peeter Ritslaid,
  • Tanel Käämbre,
  • Aile Tamm and
  • Kaupo Kukli

Beilstein J. Nanotechnol. 2023, 14, 1085–1092, doi:10.3762/bjnano.14.89

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  • ZSX Version 5.55 was used to measure the elemental composition of films. A spectroscopic ellipsometer, model GES5-E, was used for the measurements of film thicknesses and refractive indices. Ellipsometric data was modelled using the Cauchy dispersion model. The crystal structure was evaluated by
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Published 13 Nov 2023

Dual-heterodyne Kelvin probe force microscopy

  • Benjamin Grévin,
  • Fatima Husainy,
  • Dmitry Aldakov and
  • Cyril Aumaître

Beilstein J. Nanotechnol. 2023, 14, 1068–1084, doi:10.3762/bjnano.14.88

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  • electron trapping centres. The blend morphology, phase composition and concentration gradients of the donor and acceptor species (through the film thickness) can therefore have a dramatic impact on the SPV decay dynamics probed by KPFM. The sample investigated in this work has been specifically processed
  • our previous pp-KPFM measurements on PTB7:PC71BM blends [4][11], which showed that the SPV decay time constant can vary from tens of µs to several hundreds of µs, depending on the morphology and phase composition. Doing so, we maximized our chances to generate a time-dependent SPV (which first
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Published 07 Nov 2023

Experimental investigation of usage of POE lubricants with Al2O3, graphene or CNT nanoparticles in a refrigeration compressor

  • Kayhan Dağıdır and
  • Kemal Bilen

Beilstein J. Nanotechnol. 2023, 14, 1041–1058, doi:10.3762/bjnano.14.86

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  • cannot be clearly determined in FE-SEM micrograph, but the primary particle size is smaller than 50 nm. On the other hand, EDS analysis was conducted on the Al2O3 sample to determine the elemental composition and purity of Al2O3 nanoparticles. The result of the EDS analysis is given in Figure 2b and it
  • determine the elemental composition and purity of the graphene nanomaterial. The results of the EDS analysis are given in Figure 4c, which reveals the existence of C and Selements, with atomic weight percentages of 99.7 and 0.3, respectively. The origin of the detected S, as revealed by EDS analysis, may be
  • bundles. The EDS was conducted on the CNT sample to determine the elemental composition and purity of the CNT nanoparticles. The result of the EDS analysis is given in Figure 6c. Accordingly, the EDS analysis revealed the existence of C and Mg elements, with atomic weight percentages of 99.8 and 0.2
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Published 02 Nov 2023

Recognition mechanisms of hemoglobin particles by monocytes – CD163 may just be one

  • Jonathan-Gabriel Nimz,
  • Pichayut Rerkshanandana,
  • Chiraphat Kloypan,
  • Ulrich Kalus,
  • Saranya Chaiwaree,
  • Axel Pruß,
  • Radostina Georgieva,
  • Yu Xiong and
  • Hans Bäumler

Beilstein J. Nanotechnol. 2023, 14, 1028–1040, doi:10.3762/bjnano.14.85

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  • ., hydrophilicity/hydrophobicity) also played a role. Together with the particle composition, this might be a possible explanation for the difference in the results of Champion et al. and our own. Buehler et al. observed a dependence on particle size in their studies of direct Hb/HBOC–CD163 interaction. HBOCs from
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Published 19 Oct 2023

A visible-light photodetector based on heterojunctions between CuO nanoparticles and ZnO nanorods

  • Doan Nhat Giang,
  • Nhat Minh Nguyen,
  • Duc Anh Ngo,
  • Thanh Trang Tran,
  • Le Thai Duy,
  • Cong Khanh Tran,
  • Thi Thanh Van Tran,
  • Phan Phuong Ha La and
  • Vinh Quang Dang

Beilstein J. Nanotechnol. 2023, 14, 1018–1027, doi:10.3762/bjnano.14.84

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  • composition of the materials. The morphology of pure CuO NPs and CuO NPs/ZnO NRs was examined by field-emission scanning electron microscopy. UV–vis absorption spectroscopy showed the optical properties of the materials. The photodetector performance was studied through the current–voltage (I–V
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Published 13 Oct 2023

Exploring internal structures and properties of terpolymer fibers via real-space characterizations

  • Michael R. Roenbeck and
  • Kenneth E. Strawhecker

Beilstein J. Nanotechnol. 2023, 14, 1004–1017, doi:10.3762/bjnano.14.83

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  • comment on how characterizing the structural composition in real space relates to Technora® performance parameters. In particular, through comparisons with the Kevlar® K29 structure, we discuss structure–property relationships that explain the mechanical properties of these two fibers. We also analyze
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Published 05 Oct 2023

Nanoarchitectonics of photothermal materials to enhance the sensitivity of lateral flow assays

  • Elangovan Sarathkumar,
  • Rajasekharan S. Anjana and
  • Ramapurath S. Jayasree

Beilstein J. Nanotechnol. 2023, 14, 988–1003, doi:10.3762/bjnano.14.82

Graphical Abstract
  • materials, including size, shape, and nanoscale composition, plays a significant role in enhancing the photothermal properties of nanomaterials. In this review, we discuss the nanoarchitectonics of nanomaterials regarding enhanced photothermal properties and their application in LFAs. Initially, we discuss
  • various important photothermal materials and their classification along with their working principle. Then, we highlight important aspects of the nanoscale architecture (i.e., size, shape, and composition) to enable maximum light-to-heat conversion efficiency. Finally, we discuss some of the recent
  • sensitivity is an important research area. The nanoscale architecture, including shape, size, composition, and surface properties, is expected to play a major role in the photothermal properties of nanomaterials [26]. The nanoscale architecture is not only responsible for the optical characteristics of the
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Published 04 Oct 2023

Isolation of cubic Si3P4 in the form of nanocrystals

  • Polina K. Nikiforova,
  • Sergei S. Bubenov,
  • Vadim B. Platonov,
  • Andrey S. Kumskov,
  • Nikolay N. Kononov,
  • Tatyana A. Kuznetsova and
  • Sergey G. Dorofeev

Beilstein J. Nanotechnol. 2023, 14, 971–979, doi:10.3762/bjnano.14.80

Graphical Abstract
  • fabrication; the resulting composition seems to arise from Si and P supersaturation levels [3][4]. The formation of precipitates in supersaturated silicon has also been considered as a possible mechanism involved in the deactivation of dopants [5][6][7]. To date, Si3P4 compounds have not been experimentally
  • expected to conform to the elemental composition Si3P4. The emergence of an additional diffraction maximum for the sample SP900 was likely due to partial degradation of the compound. Signs of decomposition could be seen in the diffraction pattern of sample SP670 as well, albeit to a lesser extent. Raman
  • control over the width of the bandgap through selection of the composition. Conclusion A synthesis of freestanding Si3P4 NPs with cubic crystal structure was successfully carried out and corroborated by XRD, TEM, EDX, electron diffraction, and Raman spectroscopy. The cell parameter of the experimentally
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Published 26 Sep 2023

Low temperature atomic layer deposition of cobalt using dicobalt hexacarbonyl-1-heptyne as precursor

  • Mathias Franz,
  • Mahnaz Safian Jouzdani,
  • Lysann Kaßner,
  • Marcus Daniel,
  • Frank Stahr and
  • Stefan E. Schulz

Beilstein J. Nanotechnol. 2023, 14, 951–963, doi:10.3762/bjnano.14.78

Graphical Abstract
  • ] consists of 9.5 atom % Co, 28.6 atom % O, and 61.9 atom % C, when ignoring H, which is not measurable in XPS. The measured film composition indicates that the carbonyl groups (−CO) have been partially evaporated, while the heptyne group has been incorporated within the film to some extent. ALD with [Co2(CO
  • had a slightly increased growth rate. This indicates a different deposition mode, probably caused by incomplete precursor decomposition during the plasma pulse. The XPS measurement and the calculated composition of a film deposited at 35 °C are shown in Figure 13. The film is dominated by carbon and
  • comparable film compositions and differ significantly from the composition of the samples deposited at 35 °C (Figure 13) or 125 °C. Figure 14 shows the XPS results of a film deposited at 85 °C. An overview spectrum of this measurement is shown in Supporting Information File 1, Figure S4. The cobalt 2p
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Published 15 Sep 2023

Upscaling the urea method synthesis of CoAl layered double hydroxides

  • Camilo Jaramillo-Hernández,
  • Víctor Oestreicher,
  • Martín Mizrahi and
  • Gonzalo Abellán

Beilstein J. Nanotechnol. 2023, 14, 927–938, doi:10.3762/bjnano.14.76

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  • -layer interactions and chemical composition. One of the most interesting families is that of layered double hydroxides (LDHs), which are characterized by having a positive charge, hence the name “anionic clays”. This family exhibits hydrotalcite-like structures consisting of infinite positively charged
  • < x < 0.33). An− symbolizes a constituent ranging from (in)organic anions to macromolecules, and Sv stands for solvent molecules. This general composition leads to a plethora of highly tunable systems [12][13][14][15][16] with relevance in environmental applications [17], photocatalysis [18], energy
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Published 11 Sep 2023

Antibody-conjugated nanoparticles for target-specific drug delivery of chemotherapeutics

  • Mamta Kumari,
  • Amitabha Acharya and
  • Praveen Thaggikuppe Krishnamurthy

Beilstein J. Nanotechnol. 2023, 14, 912–926, doi:10.3762/bjnano.14.75

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  • different spatial orientations due to their asymmetric nature. Additionally, the functionalization also alters the surface composition and morphology of the NPs. The nature of interactions between NPs and antibodies is directly related to the type of functional groups present on the NPs surface and the
  • -effectiveness. The optimization of these variables depends on NP design parameters such as size, shape, charge, composition, preparation method, and surface decorating moiety. The most crucial aspect in the future development of ACNPs will be the design and fabrication of multiple targeting moieties with the
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Published 04 Sep 2023

Ni, Co, Zn, and Cu metal-organic framework-based nanomaterials for electrochemical reduction of CO2: A review

  • Ha Huu Do and
  • Hai Bang Truong

Beilstein J. Nanotechnol. 2023, 14, 904–911, doi:10.3762/bjnano.14.74

Graphical Abstract
  • exhibited considerable variation depending on the elemental composition of pure metal catalysts [19]. Notably, Au, Ag, and Zn catalysts exhibit preferential CO generation, while Sn, In, and Pb catalysts prove effective in producing formate ions (HCOO−) [20]. Metal-organic frameworks (MOFs) are established
  • sacrificial agents to create metal or metal compounds embedded in carbon matrices was considered a potential direction in CO2RR application. Systematic studies should be conducted to control morphological structure and composition by changing reaction conditions (time, temperature, and pressure) when
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Published 31 Aug 2023

N-Heterocyclic carbene-based gold etchants

  • Robert B. Chevalier,
  • Justin Pantano,
  • Matthew K. Kiesewetter and
  • Jason R. Dwyer

Beilstein J. Nanotechnol. 2023, 14, 865–871, doi:10.3762/bjnano.14.71

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  • framework for gold whose efficacy can be tuned by chemical composition, solvent composition, exposure time, and concentration. Conventional gold etchants are predominated by inorganic chemical composition, including aqua regia (3 M:1 M hydrochloric acid to nitric acid), potassium cyanide, and triiodide [27
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Published 21 Aug 2023

Industrial perspectives for personalized microneedles

  • Remmi Danae Baker-Sediako,
  • Benjamin Richter,
  • Matthias Blaicher,
  • Michael Thiel and
  • Martin Hermatschweiler

Beilstein J. Nanotechnol. 2023, 14, 857–864, doi:10.3762/bjnano.14.70

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  • produce tens of millions of Nanopatches per week for COVID-19 vaccination [64][65]. If companies were to personalize and optimize microneedles (including design, dosage, and vaccine composition) for COVID-19 or influenza vaccination based on ethnicities [66], those manufacturers would have to produce
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Published 15 Aug 2023

Biomimetics on the micro- and nanoscale – The 25th anniversary of the lotus effect

  • Matthias Mail,
  • Kerstin Koch,
  • Thomas Speck,
  • William M. Megill and
  • Stanislav N. Gorb

Beilstein J. Nanotechnol. 2023, 14, 850–856, doi:10.3762/bjnano.14.69

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  • -coated artificial leaf surfaces with chemical composition and wettability of wheat (Triticum aestivum) leaves. Such artificial leaves are of interest for in vitro studies of interactions of plant surfaces with living organisms and the non-living environment, as demonstrated by Huth et al. [11], where the
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Published 03 Aug 2023

A wearable nanoscale heart sound sensor based on P(VDF-TrFE)/ZnO/GR and its application in cardiac disease detection

  • Yi Luo,
  • Jian Liu,
  • Jiachang Zhang,
  • Yu Xiao,
  • Ying Wu and
  • Zhidong Zhao

Beilstein J. Nanotechnol. 2023, 14, 819–833, doi:10.3762/bjnano.14.67

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  • . Composition and β-phase content of the piezoelectric composite films were analyzed using X-ray diffraction. The morphology of the composite film fibers was observed through scanning electron microscopy. Finally, the P(VDF-TrFE)/ZnO/graphene composite film was encapsulated in a sandwich-structure heart sound
  • of heart sound stethoscope. Results and Discussion Characterization of thin film samples In the study by Luo et al. [19], an investigation was carried out to explore the electrospinning of piezoelectric films using different composition ratios of P(VDF-TrFE), ZnO, and GR. The resulting films
  • underwent characterization through electron microscopy, X-ray diffraction (XRD), and piezoelectric performance testing. The results indicated that the piezoelectric film with a composition ratio of 12% P(VDF-TrFE) + 10% ZnO + 0.1% GR exhibited superior performance regarding various aspects. Consequently, in
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Published 31 Jul 2023

Nanostructured lipid carriers containing benznidazole: physicochemical, biopharmaceutical and cellular in vitro studies

  • Giuliana Muraca,
  • María Esperanza Ruiz,
  • Rocío C. Gambaro,
  • Sebastián Scioli-Montoto,
  • María Laura Sbaraglini,
  • Gisel Padula,
  • José Sebastián Cisneros,
  • Cecilia Yamil Chain,
  • Vera A. Álvarez,
  • Cristián Huck-Iriart,
  • Guillermo R. Castro,
  • María Belén Piñero,
  • Matias Ildebrando Marchetto,
  • Catalina Alba Soto,
  • Germán A. Islan and
  • Alan Talevi

Beilstein J. Nanotechnol. 2023, 14, 804–818, doi:10.3762/bjnano.14.66

Graphical Abstract
  • trypanocidal activity against trypomastigotes compared to that of the free drug [18]. Among the aforementioned nanosystems, SLNs have recently gained special attention owing to their biocompatibility properties, biodegradability, relatively easy surface and composition modification, and efficacy in loading and
  • used to analyze the nanoparticle surface composition and determine the possible interactions among the formulation components (Figure 4). The BNZ spectrum presented its characteristic peaks at 3264 cm−1 corresponding to N–H in the secondary amide bond, 1652 cm−1 to C=O in the amide, 1523–1400 cm−1 to N
  • -VEHICLE and NLC-BNZ, the latter exhibiting a higher HA, could be explained by adding the HA of the free drug to the effect of the vehicle on erythrocytes. More studies would be necessary to investigate the effect of the composition, size, or porosity of these nanoparticles after a long term exposure to
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Published 28 Jul 2023

Carboxylic acids and light interact to affect nanoceria stability and dissolution in acidic aqueous environments

  • Matthew L. Hancock,
  • Eric A. Grulke and
  • Robert A. Yokel

Beilstein J. Nanotechnol. 2023, 14, 762–780, doi:10.3762/bjnano.14.63

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  • rate than any other acid in the dark. TEM imaging of nanoceria in citric and β-hydroxybutyric acid supported the DLS results. Relating the carboxylic acid composition (number of carboxylic acid groups, total number of carbons, aliphatic carbons, and hydroxy groups and their molecular ratios) to the
  • dark-field scanning TEM and EDS were used to determine the elemental composition of some particles seen in TEM. In addition, camera photos were taken after 0, 1, 2, and 4 weeks of the samples exposed to citric acid and water under light and dark conditions. To identify the key functional groups that
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Published 27 Jun 2023

Control of morphology and crystallinity of CNTs in flame synthesis with one-dimensional reaction zone

  • Muhammad Hilmi Ibrahim,
  • Norikhwan Hamzah,
  • Mohd Zamri Mohd Yusop,
  • Ni Luh Wulan Septiani and
  • Mohd Fairus Mohd Yasin

Beilstein J. Nanotechnol. 2023, 14, 741–750, doi:10.3762/bjnano.14.61

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  • front, and flame composition [9]. A premixed flat flame was utilized by Zhang et al. [10] to synthesize single-walled CNTs (SWCNTs) through rich hydrogen/air combustion with a ferrocene catalyst. The temperature profile was estimated to be relatively uniform across HAB values up to 10 mm. An increase in
  • with an accuracy of 1 mm. Schematic diagram of the premixed flame synthesis setup with quartz tube and traversing arm. The one-dimensional flame is achieved by the utilization of sintered metal at the outlet of the burner. Average elemental composition of CNTs on nickel wire measured with EDX. Funding
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Published 21 Jun 2023

A graphene quantum dots–glassy carbon electrode-based electrochemical sensor for monitoring malathion

  • Sanju Tanwar,
  • Aditi Sharma and
  • Dhirendra Mathur

Beilstein J. Nanotechnol. 2023, 14, 701–710, doi:10.3762/bjnano.14.56

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  • attributed to its surface composition of different functional groups providing specific sites for pesticide molecules. These results demonstrate that the GQDs/GCE electrochemical sensor is capable of detecting malathion over a wide linear range with low detection limits and high selectivity. The graphene
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Published 09 Jun 2023
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