Electrochemical determination of ciprofloxacin using a MIL-101/reduced graphene oxide-modified electrode

• Nguyen Quang Man,
• Nguyen Ngoc Nghia,
• Nguyen Vinh Phu,
• Vo Thi Khanh Ly,
• Le Lam Son,
• Pham Khac Lieu,
• Le Thi Hong Phong,
• Nguyen Dinh Luyen and
• Dinh Quang Khieu

Beilstein J. Nanotechnol. 2026, 17, 541–554, doi:10.3762/bjnano.17.35

• , yielding acceptable recoveries. These results indicate that the MIL-101/rGO-modified electrode provides a promising and efficient platform for the electrochemical sensing of CPR in pharmaceutical and environmental analysis. Keywords: ciprofloxacin; electrochemical analysis; MIL-101; reduced graphene oxide

• excipients and properly diluted with BR buffer (pH 4) before electrochemical analysis. The CPR content in the pharmaceutical samples was measured using the standard addition method. Data analysis All electrochemical measurements were performed in triplicate. Calibration curves were constructed from DPV peak

Synthesis of biowaste-derived carbon-dot-mediated silver nanoparticles and the evaluation of electrochemical properties for supercapacitor electrodes

• Navya Kumari Tenkayala,
• Chandan Kumar Maity,
• Md Moniruzzaman and
• Subramani Devaraju

Beilstein J. Nanotechnol. 2025, 16, 933–943, doi:10.3762/bjnano.16.71

• discharge time. Electrochemical analysis of the asymmetric supercapacitor device in a 1 M TEABF4/DMSO organic electrolyte Electrochemical evaluations attributed that in the three-electrode configuration, the PG-CDs-AgNPs electrode possessed superior electrochemical activity. Thus, utilizing carbon black (CB

• . Formation and stabilization of PG-CDs-AgNPs. TEM images (a–c) of PG-CDs-AgNPs; (d) HRTEM image of PG-CDs-AgNPs, (e) average particle size distribution histogram, and (f) SEAD patterns PG-CDs-AgNPs. Electrochemical analysis of PG-CDs-AgNPs in 1 M aq. KCl using a three-electrode set-up: (a) CV plots of PG-CDs

Characterization of ZnO nanoparticles synthesized using probiotic Lactiplantibacillus plantarum GP258

• Prashantkumar Siddappa Chakra,
• Aishwarya Banakar,
• Shriram Narayan Puranik,
• Vishwas Kaveeshwar,
• C. R. Ravikumar and
• Devaraja Gayathri

Beilstein J. Nanotechnol. 2025, 16, 78–89, doi:10.3762/bjnano.16.8

• characterization using UV–vis spectroscopy, Fourier-transform infrared spectroscopy, X-ray diffraction measurements, energy-dispersive X-ray spectroscopy, scanning and transmission electron microscopy, photocatalytic studies, electrochemical analysis, and determination of antibacterial and anticancer activity. The

• colloidal system. Our biosynthesized nanoparticles showed a zeta potential of −60 mV. It is considered that a NP colloid with a zeta potential of more than ±30 mV shows good stability against aggregation. The zeta average size was found to be 99 nm (Figure 4e,f). Electrochemical analysis Cyclic voltammetry

Simultaneous electrochemical determination of uric acid and hypoxanthine at a TiO₂/graphene quantum dot-modified electrode

• Vu Ngoc Hoang,
• Dang Thi Ngoc Hoa,
• Nguyen Quang Man,
• Le Vu Truong Son,
• Le Van Thanh Son,
• Vo Thang Nguyen,
• Le Thi Hong Phong,
• Ly Hoang Diem,
• Kieu Chan Ly,
• Ho Sy Thang and
• Dinh Quang Khieu

Beilstein J. Nanotechnol. 2024, 15, 719–732, doi:10.3762/bjnano.15.60

• electrodes used in electrochemical analysis. To the best of our knowledge, there are only few reports on TiO2/GQDs for electrochemical analysis. In the present work, TiO2/GQDs were prepared from coffee grounds and peroxo titanium complexes by a hydrothermal process. The simultaneous determination of URI and

Influence of conductive carbon and MnCo₂O₄ on morphological and electrical properties of hydrogels for electrochemical energy conversion

• Sylwia Pawłowska,
• Karolina Cysewska,
• Yasamin Ziai,
• Jakub Karczewski,
• Piotr Jasiński and
• Sebastian Molin

Beilstein J. Nanotechnol. 2024, 15, 57–70, doi:10.3762/bjnano.15.6

• 0.01 Hz – 10 kHz and at an amplitude of 10 mV. The data was analysed by the ZView software. Electrode preparation and electrochemical measurements For the electrochemical analysis, 5 µL of the hydrogel precursor solution was dropped on a rotating glassy carbon (GC) electrode with a working area of

Rapid and sensitive detection of box turtles using an electrochemical DNA biosensor based on a gold/graphene nanocomposite

• Abu Hashem,
• M. A. Motalib Hossain,
• Ab Rahman Marlinda,
• Mohammad Al Mamun,
• Khanom Simarani and
• Mohd Rafie Johan

Beilstein J. Nanotechnol. 2022, 13, 1458–1472, doi:10.3762/bjnano.13.120

• surfaces were 31.55, 26.36, and 26.21 mA, respectively. This finding proves that the AuNPs/Gr nanocomposite is suitable for electrochemical analysis and enhances the electrocatalytic activity by facilitating electron transfer in the redox process [54]. Bare SPCE and modified SPCE surfaces were examined

LED-light-activated photocatalytic performance of metal-free carbon-modified hexagonal boron nitride towards degradation of methylene blue and phenol

• Nirmalendu S. Mishra and
• Pichiah Saravanan

Beilstein J. Nanotechnol. 2022, 13, 1380–1392, doi:10.3762/bjnano.13.114

• reflectance for the specified materials, respectively. It was observed that the MBN had an enhanced LHE (90%) in comparison to that of HBN with zero activity in the visible range, 85% (MBN-50), and 70% (MBN-25). Electrochemical analysis The EIS analysis provides further evidence on the enhanced performance of

A nonenzymatic reduced graphene oxide-based nanosensor for parathion

• Sarani Sen,
• Anurag Roy,
• Ambarish Sanyal and
• Parukuttyamma Sujatha Devi

Beilstein J. Nanotechnol. 2022, 13, 730–744, doi:10.3762/bjnano.13.65

• filtration. Boiled rice (20 g) was also smashed with 20 mL of 50% ethanol. All the samples were stored at 4 °C after filtration (pore size = 0.45 micron) to remove all the solid impurities. Actual samples were spiked with different concentrations of PT during electrochemical analysis. Each concentration of

Atomic layer deposited films of Al₂O₃ on fluorine-doped tin oxide electrodes: stability and barrier properties

• Hana Krýsová,
• Michael Neumann-Spallart,
• Hana Tarábková,
• Pavel Janda,
• Ladislav Kavan and
• Josef Krýsa

Beilstein J. Nanotechnol. 2021, 12, 24–34, doi:10.3762/bjnano.12.2

• compact. The AFM line analysis (Figure 5b) shows a height difference of 12 nm between the area exposed for 1 h and the unexposed area. The electrochemical analysis of blocking behaviour showed that Al2O3 films were completely dissolved after 1 h of exposure. Therefore, the effective thickness of the film

High-performance asymmetric supercapacitor made of NiMoO₄ nanorods@Co₃O₄ on a cellulose-based carbon aerogel

• Meixia Wang,
• Jing Zhang,
• Xibin Yi,
• Benxue Liu,
• Xinfu Zhao and
• Xiaochan Liu

Beilstein J. Nanotechnol. 2020, 11, 240–251, doi:10.3762/bjnano.11.18

• of the NiMoO4@Co3O4/CA electrode in a potential supercapacitor. The synthesized samples were used as working electrodes for electrochemical analysis. The electrochemical experiments were conducted by using a three-electrode testing system in a 2.0 M KOH solution. The reference electrode and the

Flexible freestanding MoS₂-based composite paper for energy conversion and storage

• Florian Zoller,
• Jan Luxa,
• Thomas Bein,
• Dina Fattakhova-Rohlfing,
• Daniel Bouša and
• Zdeněk Sofer

Beilstein J. Nanotechnol. 2019, 10, 1488–1496, doi:10.3762/bjnano.10.147

• MoS2-based composite paper obtained by chronoamperometry in 1M KCl solution using different current densities. Electrochemical analysis of the freestanding MoS2-based composite paper. (a) CV curves at a scan rate of 0.1 V·s−1, (b) discharge/charge voltage profiles at 0.2 A·g−1, (c) reversible

A porous 3D-RGO@MWCNT hybrid material as Li–S battery cathode

• Yongguang Zhang,
• Jun Ren,
• Yan Zhao,
• Taizhe Tan,
• Fuxing Yin and
• Yichao Wang

Beilstein J. Nanotechnol. 2019, 10, 514–521, doi:10.3762/bjnano.10.52

• discussed later in the electrochemical analysis. Figure 4a presents the XRD patterns for pure S, 3D-RGO@MWCNT and the S-3D-RGO@MWCNT composite. The XRD pattern of 3D-RGO@MWCNT exhibits two broad characteristic peaks of RGO at around 22° and 43°. Moreover, a diffraction peak around 26° for 3D-RGO@MWCNT

Nitrogen-doped carbon nanotubes coated with zinc oxide nanoparticles as sulfur encapsulator for high-performance lithium/sulfur batteries

• Yan Zhao,
• Zhengjun Liu,
• Liancheng Sun,
• Yongguang Zhang,
• Yuting Feng,
• Xin Wang,
• Indira Kurmanbayeva and
• Zhumabay Bakenov

Beilstein J. Nanotechnol. 2018, 9, 1677–1685, doi:10.3762/bjnano.9.159

• composite S/ZnO@NCNT cathode exhibiting stable performance and its structural and electrochemical analysis and evaluation. Results and Discussion Figure 1 shows the XRD patterns of sulfur, ZnO@NCNT and S/ZnO@NCNT composite. It can be seen that S is successfully incorporated into the composite. The ZnO

Colloidal solution of silver nanoparticles for label-free colorimetric sensing of ammonia in aqueous solutions

• Alessandro Buccolieri,
• Antonio Serra,
• Gabriele Giancane and
• Daniela Manno

Beilstein J. Nanotechnol. 2018, 9, 499–507, doi:10.3762/bjnano.9.48

• fluid can be efficiently solved by developing methods for the detection of chemical species in the fluid itself. This approach has several advantages, including minimal fluid management and therefore greater reliability of the result. There are many analytical methods to detect ammonia. Electrochemical

• analysis [8], gas chromatography [9], immunoassays [10], thin-layer chromatography [11], high-performance liquid chromatography (HPLC) [12] are the main methods used so far for a reliable determination of NH3 levels. However, the above-mentioned techniques have difficulties and disadvantages, such as the

Facile synthesis of ZnFe₂O₄ photocatalysts for decolourization of organic dyes under solar irradiation

• Arjun Behera,
• Debasmita Kandi,
• Sanjit Manohar Majhi,
• Satyabadi Martha and
• Kulamani Parida

Beilstein J. Nanotechnol. 2018, 9, 436–446, doi:10.3762/bjnano.9.42

• microstructure of the prepared catalysts were investigated by a TEM-JEOL-2010 200 kV instrument. The electrochemical analysis was carried out using an Ivium potentiostat. Photoelectrochemical (PEC) measurements were performed in a Pyrex electrochemical set up, which includes ZFO samples (deposited on FTO) as

Characterization of 10,12-pentacosadiynoic acid Langmuir–Blodgett monolayers and their use in metal–insulator–metal tunnel devices

• Saumya Sharma,
• Mohamad Khawaja,
• Manoj K. Ram,
• D. Yogi Goswami and
• Elias Stefanakos

Beilstein J. Nanotechnol. 2014, 5, 2240–2247, doi:10.3762/bjnano.5.233

• , indium tin oxide (ITO) glass, quartz and nickel substrates for optical spectroscopy, cyclic voltammetry and electrical measurements [12][13][14][15]. The optical and electrochemical properties of the films were investigated using FTIR and cyclic voltammetric studies, respectively. The electrochemical

• analysis of PDA has proved useful in understanding the chemical activity, such as the oxidation–reduction reactions, as well as their reversibility. Cyclic voltammetry was performed on PDA films deposited onto ITO-coated glass substrates in order to gain qualitative information about the electrochemical

Nano-rings with a handle – Synthesis of substituted cycloparaphenylenes

• Anne-Florence Tran-Van and
• Hermann A. Wegner

Beilstein J. Nanotechnol. 2014, 5, 1320–1333, doi:10.3762/bjnano.5.145

• and coworkers also reported the synthesis of a [4]cyclo-2,7-pyrenylene ([4]CPY) by using their method with a square-like tetra-Pt-complex [53]. DFT-calculations as well as electrochemical analysis revealed a strong resemblance with [8]CPP. During the evolution of larger π-extended nanobelts, Itami

Electron-beam patterned self-assembled monolayers as templates for Cu electrodeposition and lift-off

• Zhe She,
• Andrea DiFalco,
• Georg Hähner and
• Manfred Buck

Beilstein J. Nanotechnol. 2012, 3, 101–113, doi:10.3762/bjnano.3.11

• ; lithography; metallic nanostructures; self-assembled monolayers; thiols; Introduction Covering the range from tens of micrometers down to nanometers, the scope of applications of metal structures in electronics [1][2], sensing [3][4][5][6][7], electrochemical analysis [8], optics and imaging [9][10][11][12