Multilayered hyperbolic Au/TiO₂ nanostructures for enhancing the nonlinear response around the epsilon-near-zero point

• Fernando Arturo Araiza-Sixtos,
• Mauricio Gomez-Robles,
• Rafael Salas-Montiel and
• Raúl Rangel-Rojo

Beilstein J. Nanotechnol. 2026, 17, 251–261, doi:10.3762/bjnano.17.17

• available materials in nature that present hyperbolic dispersion, such as bismuth and 2D graphene sheets [2], indium tin oxide (ITO) [3], and aluminum-doped zinc oxide (AZO) [4]. HMMs are highly anisotropic and exhibit some interesting properties, including strong enhancement of spontaneous emission

Gold nanoparticle-decorated reduced graphene oxide as a highly effective catalyst for the selective α,β-dehydrogenation of N-alkyl-4-piperidones

• Brenda Flore Kenyim,
• Mihir Tzalis,
• Marilyn Kaul,
• Robert Oestreich,
• Aysenur Limon,
• Chancellin Pecheu Nkepdep and
• Christoph Janiak

Beilstein J. Nanotechnol. 2026, 17, 218–238, doi:10.3762/bjnano.17.15

• reduced graphene oxide (AuNPs/rGO) were demonstrated to be a highly reactive catalyst for the selective α,β-oxidative dehydrogenation (ODH) of N-alkyl-4-piperidones, using N-methyl-, N-ethyl- and N-benzyl-4-piperidone. The substrate N-methyl-4-piperidone represents a pharmaceutically relevant system as

• its reaction product N-methyl-2,3-dihydropyridin-4(1H)-one is highly valuable (>1000 €·g−1) in contrast to the inexpensive starting material (0.15 €·g−1). Various synthesis methods were employed to prepare AuNPs supported on different carbon materials, including reduced graphene oxide (rGO), activated

• the dehydrogenation of β-N-substituted saturated ketones and other fine chemical applications. Keywords: oxidative dehydrogenation; reduced graphene oxide; supported gold nanoparticles; β-N-substituted ketones; Introduction The properties related to the high surface area of matter at the nanometric

Time of flight secondary ion mass spectrometry imaging of contaminant species in chemical vapour deposited graphene on copper

• Barry Brennan,
• Vlad-Petru Veigang-Radulescu,
• Philipp Braeuninger-Weimer,
• Stephan Hofmann and
• Andrew J. Pollard

Beilstein J. Nanotechnol. 2026, 17, 200–213, doi:10.3762/bjnano.17.13

• Cambridge, Cambridge CB3 0FA, United Kingdom 10.3762/bjnano.17.13 Abstract Time of flight secondary ion mass spectrometry (ToF-SIMS) was used to probe the chemistry of graphene grown on copper foil substrates by chemical vapour deposition (CVD) under various growth conditions. The surface sensitivity, mass

• resolving power, and imaging capability of ToF-SIMS allow us to explore variations in the chemical species present on the graphene surface, as well as in three dimensions under the graphene. In this way, we can observe the impact that variations in the chemical composition of the copper foil have on the

• growth of the graphene; in particular, the accumulation of contaminations present in the copper foil, which has implications for the potential electrical properties of the graphene. We also observe variations in the permeation of oxygen underneath the graphene layers, resulting in oxidation of the copper

From shield to spear: Charge-reversible nanocarriers in overcoming cancer therapy barriers

• Madhuri Yeduvaka,
• Pooja Mittal,
• Ameer Boyalakuntla,
• Usman Bee Shaik,
• Himanshu Sharma,
• Thakur Gurjeet Singh,
• Siva Nageswara Rao Gajula and
• Lakshmi Vineela Nalla

Beilstein J. Nanotechnol. 2026, 17, 159–175, doi:10.3762/bjnano.17.10

• materials such as graphene, azobenzene, and gold nanorods [54]. Upon exposure to UV–vis or near-infrared (NIR) light, these materials undergo structural changes or generate ROS, triggering controlled release of their therapeutic cargo. This precise spatiotemporal control over drug release and therapeutic

• exposure, azobenzene undergoes reversible trans–cis isomerisation, inducing structural changes that regulate cargo release [55]. Additionally, Choi et al. demonstrated that nanocarriers incorporating graphene oxide (GO) loaded with photosensitizers generate ROS upon NIR irradiation, enabling effective

Reduced graphene oxide paper electrode for lithium-ion cells – towards optimized thermal reduction

• Agata Pawłowska,
• Magdalena Baran,
• Stefan Marynowicz,
• Aleksandra Izabela Banasiak,
• Adrian Racki,
• Adrian Chlanda,
• Tymoteusz Ciuk,
• Marta Wolczko and
• Andrzej Budziak

Beilstein J. Nanotechnol. 2026, 17, 24–37, doi:10.3762/bjnano.17.3

• Agata Pawlowska Magdalena Baran Stefan Marynowicz Aleksandra Izabela Banasiak Adrian Racki Adrian Chlanda Tymoteusz Ciuk Marta Wolczko Andrzej Budziak Flake Graphene Research Group, Łukasiewicz Research Network – Institute of Microelectronics and Photonics, al. Lotników 32/46, 02-668, Warsaw

• Technologies Research Group, Łukasiewicz Research Network – Institute of Microelectronics and Photonics, al. Lotników 32/46, 02-668, Warsaw, Poland 10.3762/bjnano.17.3 Abstract This work introduces the results of characterizing free-standing reduced graphene oxide paper, given its potential use as an

• electrode material in lithium-ion cells. Mildly reduced graphene oxide paper underwent further thermal reduction steps. The structural and chemical properties of the obtained materials were determined using Raman and Fourier-transform infrared spectroscopies and elemental combustion analysis. The morphology

Optical bio/chemical sensors for vitamin B₁₂ analysis in food and pharmaceuticals: state of the art, challenges, and future outlooks

• Seyed Mohammad Taghi Gharibzahedi and
• Zeynep Altintas

Beilstein J. Nanotechnol. 2025, 16, 2207–2244, doi:10.3762/bjnano.16.153

• remarkably excellent selectivity, reproducibility, and storage stability for the SPR sensor recorded, but a strong association between the SPR sensor and LC-MS/MS findings was found [95]. Recently, Bareza et al. have reported that graphene nanostructures, which can confine mid-infrared plasmons at the

• leveraging mid-IR plasmon resonance in graphene nanostructures to detect VB12, where functionalized graphene nanoribbons provided the recognition sites, the nanostructured graphene surface acted as the plasmonic indicator, and the sensing signal was a mid-IR resonance shift. This approach achieved an LOD of

• 53.5 ng/mL using graphene nanoribbons modified with specific recognition elements [96]. Moreover, Bareza et al. demonstrated the scalability and industrial applicability of this bioassay through the use of large-area nanostructured graphene films, proving the promising future of graphene-based mid-IR

Missing links in nanomaterials research impacting productivity and perceptions

• Santosh K. Tiwari and
• Nannan Wang

Beilstein J. Nanotechnol. 2025, 16, 2168–2176, doi:10.3762/bjnano.16.149

• acceleration after the discovery of fullerene by Kroto and co-workers in 1985 and witnessed an even more rapid surge following the discovery of graphene and the award of the Physics Nobel Prize in 2010 [6][7]. Graphene is often referred to as a “wonder material” due to its seemingly infinite potential in

• nanotubes, graphene, metal oxides, quantum dots, and MXenes are among the most extensively studied and explored nanomaterials. These materials have been researched in nearly every discipline, leading to the establishment of numerous startups and companies focused on their production, processing, and

• , though nanomaterials research has made impressive scientific advances, its translation into mass-market products remains partial. Therefore, it raises a vital and valid question: Why are heavily researched nanomaterials such as carbon nanotubes, graphene, metal oxides, quantum dots, and MXenes still so

Microplastic pollution in Himalayan lakes: assessment, risks, and sustainable remediation strategies

• Sameeksha Rawat,
• S. M. Tauseef and
• Madhuben Sharma

Beilstein J. Nanotechnol. 2025, 16, 2144–2167, doi:10.3762/bjnano.16.148

• , attack the polymer chains of MPs. They either break the chains into smaller pieces or mineralize them into CO2 and water. A lot of research is being done on the photocatalytic properties of nanomaterials like TiO2, graphene oxide (GO), and ZnO. An excellent material for breaking down MPs in water systems

• is TiO2, which is known for being stable, effective, and able to produce ROS when exposed to UV light [43]. The effectiveness of TiO2 has been improved recently by doping it with nonmetals like sulfur and nitrogen or combining it with carbon-based compounds like graphene. According to Xiao et al

Electron transport through nanoscale multilayer graphene and hexagonal boron nitride junctions

• Aleksandar Staykov and
• Takaya Fujisaki

Beilstein J. Nanotechnol. 2025, 16, 2132–2143, doi:10.3762/bjnano.16.147

• ) method combined with density functional theory (DFT) to compare electron transport through several layers of nanoscale graphene and hexagonal boron nitride (h-BN). Calculations were performed for one to six layers, corresponding to thicknesses of 0.5–3.0 nm, respectively. Electron transport was computed

• perpendicular to the layers in the stacking direction. We compared the decay of the current with the number of layers and evaluated the ability of h-BN to filter currents as a material coating. To investigate the effect of disorder, we included two major defects in the graphene lattice, namely, nitrogen doping

• and Stone–Wales defects. Nitrogen doping transforms graphene from a zero-bandgap semiconductor to a metal, while Stone–Wales defects open the bandgap. For h-BN, we considered Stone–Wales defects. A detailed comparison of electron transport through five materials, that is, multilayer nanoscale graphene

Toward clinical translation of carbon nanomaterials in anticancer drug delivery: the need for standardisation

• Michał Bartkowski,
• Francesco Calzaferri and
• Silvia Giordani

Beilstein J. Nanotechnol. 2025, 16, 2092–2104, doi:10.3762/bjnano.16.144

• Michal Bartkowski Francesco Calzaferri Silvia Giordani School of Chemical Sciences, Dublin City University, Glasnevin, Dublin, Ireland Life Science Institute, Dublin City University, Glasnevin, Dublin, Ireland 10.3762/bjnano.16.144 Abstract Carbon nanomaterials (CNMs), including graphene, carbon

• standardisation, and interdisciplinary collaboration. An overview of key production challenges is provided in Table 1. The lack of standardised methods for the synthesis and characterisation of CNMs is a major challenge in the field of nanotechnology. CNMs, such as carbon nanotubes and graphene, have unique

• responses [37]. In contrast, a recent first-in-human investigation of thin, highly purified graphene oxide nanosheets reported that acute inhalation was well tolerated, showing no adverse effects on lung function, cardiovascular health, or systemic inflammatory markers [28]. Even within the same material

Laser ablation in liquids for shape-tailored synthesis of nanomaterials: status and challenges

• Natalie Tarasenka

Beilstein J. Nanotechnol. 2025, 16, 1963–1997, doi:10.3762/bjnano.16.137

Current status of using adsorbent nanomaterials for removing microplastics from water supply systems: a mini review

• Nguyen Thi Nhan and
• Tran Le Luu

Beilstein J. Nanotechnol. 2025, 16, 1837–1850, doi:10.3762/bjnano.16.127

• reaction pathways of these materials. Classification and potential of adsorbent nanomaterials Carbon-based adsorbents. Carbon-based adsorbents, such as graphene oxide (GO), activated carbon, biochar, and carbon nanotubes (CNTs), have been extensively investigated regarding the treatment of pollutants in

• bonding through oxygen-containing groups (oxidized biochar), pore filling, and electrostatic interactions [53]. GO materials, such as a nickel/reduced graphene oxide (Ni/rGO) nanocomposite, also exhibited high adsorption efficiency, achieving 80.3% removal of PS from water containing 100 mg·L−1 PS. The

• ]. Recently, Yan et al. developed a reduced graphene oxide (S-rGO) membrane with small lateral size and a rejection rate of up to 99.9% while maintaining high water permeability (236.2 L·m−2·h−1·bar−1) [56]. As another type of material belonging to carbon-based adsorbents, CNTs have also gained attention

Further insights into the thermodynamics of linear carbon chains for temperatures ranging from 13 to 300 K

• Alexandre Rocha Paschoal,
• Thiago Alves de Moura,
• Juan S. Rodríguez-Hernández,
• Carlos William de Araujo Paschoal,
• Yoong Ahm Kim,
• Morinobu Endo and
• Paulo T. Araujo

Beilstein J. Nanotechnol. 2025, 16, 1818–1825, doi:10.3762/bjnano.16.125

• the largest mechanical resistances among materials (including other carbon allotropic versions like graphene or nanotubes) [29][43][44][45][46][47][48][49], in addition to presenting unique conductive properties that place them ahead as ideal candidates for future developments in nanoelectronics [43

Electrical, photocatalytic, and sensory properties of graphene oxide and polyimide implanted with low- and medium-energy silver ions

• Josef Novák,
• Eva Štěpanovská,
• Petr Malinský,
• Vlastimil Mazánek,
• Jan Luxa,
• Ulrich Kentsch and
• Zdeněk Sofer

Beilstein J. Nanotechnol. 2025, 16, 1794–1811, doi:10.3762/bjnano.16.123

• , sensory, and photocatalytic properties of graphene oxide (GO) and polyimide (PI). Implantations were carried out with fluences ranging from 3.75 × 1012 cm−2 to 1 × 1016 cm−2. Silver ions offer excellent electrical, catalytic, and plasmonic characteristics, making them ideal for multifunctional enhancement

• multifunctional behavior of polymer systems. Keywords: ERDA; graphene oxide; ion implantation; photocatalysis; polyimide; RBS; Introduction Silver ion implantation is an effective strategy for controlling modification of the physicochemical properties of polymers and graphene-based materials. This method allows

• controlled modification of the electrical properties of dielectric and semiconducting materials [7]. When Ag ions are implanted into polymer substrates, such as polyimide (PI) or graphene oxide (GO), fundamental changes occur at the molecular and electronic levels, leading to a significant decrease in the

Ambient pressure XPS at MAX IV

• Mattia Scardamaglia,
• Ulrike Küst,
• Alexander Klyushin,
• Rosemary Jones,
• Jan Knudsen,
• Robert Temperton,
• Andrey Shavorskiy and
• Esko Kokkonen

Beilstein J. Nanotechnol. 2025, 16, 1677–1694, doi:10.3762/bjnano.16.118

• here. Instead, we focus on a study by Vesselli and co-workers that directly addresses catalytic activity in a biomimetic SAC system [20][21]. In their work, a cobalt single-atom biomimetic model catalyst is based on a self-assembled monolayer of Co-porphyrins grown on an almost free-standing graphene

• , often lowering activation energies and altering reaction pathways [23][24][25]. A particularly interesting case is “undercover catalysis”, where the void space between a 2D material and a catalytic surface is exploited. Materials such as graphene [26][27][28], hexagonal boron nitride (hBN) [29], and

• transition metal dichalcogenides [30] are widely studied for this purpose. Boix, Knudsen and collaborators combined APXPS with gas pulsing with varied composition to repeatedly form and remove undercover reaction products. Specifically, they studied CO and H2 oxidation below oxygen-intercalated graphene

Nanotechnology-based approaches for the removal of microplastics from wastewater: a comprehensive review

• Nayanathara O Sanjeev,
• Manjunath Singanodi Vallabha and
• Rebekah Rubidha Lisha Rabi

Beilstein J. Nanotechnol. 2025, 16, 1607–1632, doi:10.3762/bjnano.16.114

• , adaptability for functionalization and superior sorption capacity. Carbon materials with graphene-like structures, made up of sp2-hybridized carbon atoms, have gained considerable interest for their use in water treatment technologies. Their abundance of functional groups, expansive surface area, and inherent

• environmental conditions and across a wide pH range, making them reliable materials for pollutant removal [83]. Sun et al. [84] studied the removal of MPs from water using a sustainable adsorbent composed of graphene oxide and chitin. The elastic nature of the sponge retains its high porosity, enabling

• nanomaterials in membrane fabrication are zeolites, various metals and metal oxides, as well as carbon-based materials such as CNTs and graphene derivatives [86]. The nanomaterials that can be used membrane components for the removal of MPs are discussed in detail below. Metal-organic frameworks: Metal-organic

Photocatalytic degradation of ofloxacin in water assisted by TiO₂ nanowires on carbon cloth: contributions of H₂O₂ addition and substrate absorbability

• Iram Hussain,
• Lisha Zhang,
• Zhizhen Ye and
• Jin-Ming Wu

Beilstein J. Nanotechnol. 2025, 16, 1567–1579, doi:10.3762/bjnano.16.111

• on porous materials, such as carbon-based adsorbents. These innovations help to slow down electron–hole recombination, broaden light absorption, and enhance surface adsorption sites [11]. Cao et al. synthesized TiO2 nanowires on reduced graphene oxide (rGO) through a solvothermal method, which

Dendrimer-modified carbon nanotubes for the removal and recovery of heavy metal ions from water

• Thao Quynh Ngan Tran,
• Huu Trung Nguyen,
• Subodh Kumar and
• Xuan Thang Cao

Beilstein J. Nanotechnol. 2025, 16, 1522–1532, doi:10.3762/bjnano.16.107

• dendrimers on a solid support can also improve the dispersibility, accessibility of binding sites, chemical recyclability, and mechanical stability [16][17]. In fact, dendrimers have been supported by various nanomaterials such as silica, graphene oxide, and carbon nanotubes (CNTs), broadening their

• . Moreover, the applicability of Langmuir model confirms that the adsorption occurs on specific, identical sites of the CNTs-G5 surface (Figure 4c,d and Supporting Information File 1, Table S2). A recent study has observed multilayer adsorption in graphene/CNT-PAMAM hybrid materials [48], supported by

Nanomaterials for biomedical applications

• Iqra Zainab,
• Zohra Naseem,
• Syeda Rubab Batool,
• Filippo Pierini,
• Seda Kizilel and
• Muhammad Anwaar Nazeer

Beilstein J. Nanotechnol. 2025, 16, 1499–1503, doi:10.3762/bjnano.16.105

• . Drugs or genetic material can be carried by these cylindrical nanoparticles and directed towards specific cells through external stimuli such as a magnetic field or light [12]. A new nanoscale drug delivery system has been developed by using carbon nanotubes and a carbon nanotube–graphene hybrid to more

• healthy tissues [33]. Scientists are also investigating carbon-based nanomaterials such as graphene and carbon nanotubes for different possible uses. Besides their great photothermal properties, these materials can be modified to specifically target tumor cells [34]. Additionally, photothermal

Laser processing in liquids: insights into nanocolloid generation and thin film integration for energy, photonic, and sensing applications

• Akshana Parameswaran Sreekala,
• Pooja Raveendran Nair,
• Jithin Kundalam Kadavath,
• Bindu Krishnan,
• David Avellaneda Avellaneda,
• M. R. Anantharaman and
• Sadasivan Shaji

Beilstein J. Nanotechnol. 2025, 16, 1428–1498, doi:10.3762/bjnano.16.104

• study also delves into the preparation of novel nanomaterials like HfO2 NPs, few-layer graphene, and Cu/CuO/Fe3O4 composites using LAL, opening new avenues in both sensing and photonics. Looking ahead, studies focusing on the formation of functionalized nanostructures with tailored properties for

• CuPc films [105]. In order to fabricate a NP/graphene nanocomposite, drops of colloidal solutions from each samples were cast and spin-coated onto graphene substrates to obtain a “starry-sky” morphology, which can be used in fuel cells, sensors, catalysis, and electronic and optical devices [106

• ]. Nanostructured films of SnS and its hybrids with Si and graphene prepared by employing laser fragmentation and ablation in different solvents were reported for photodetector applications. While SnS and SnS–Si NPs had spherical morphology [104][107], in SnS–graphene, the layered nature of graphene was visible and

The role of biochar in combating microplastic pollution: a bibliometric analysis in environmental contexts

• Tuan Minh Truong Dang,
• Thao Thu Thi Huynh,
• Guo-Ping Chang-Chien and
• Ha Manh Bui

Beilstein J. Nanotechnol. 2025, 16, 1401–1416, doi:10.3762/bjnano.16.102

• . Additionally, three-dimensional graphene oxide has shown adsorption capacities of up to 617.28 mg·g−1 for polystyrene MPs of 5 µm in size [13][14]. The integration of adsorbents with appropriate treatment models has further enhanced removal efficiency. For instance, coal gasification slag-based adsorbents

• ] assessed different biosorbents, including biochar, sponge/aerogel biomass-derived materials, and biomass-based graphene materials, revealing that biochar exhibits comparable efficiency to sponge/aerogel biomass-derived materials. Furthermore, while MP-induced soil alterations have shown positive responses

• metal–O functional groups in adsorption [43]. In contrast, the adsorption kinetics of AZP show minimal differences between PFO and PSO models, suggesting a balanced contribution from its graphene-like structure and Al–O/Si–O functional groups. The mixed first- and second-order model achieves an R2 value

Synthesis and antibacterial properties of nanosilver-modified cellulose triacetate membranes for seawater desalination

• Lei Wang,
• Shizhe Li,
• Kexin Xu,
• Wenjun Li,
• Ying Li and
• Gang Liu

Beilstein J. Nanotechnol. 2025, 16, 1380–1391, doi:10.3762/bjnano.16.100

• , indicating the potential for repeated use and long-term application [21]. Zhao and Park’s group incorporated in situ synthesized silver-loaded graphene oxide (GO-Ag) nanoparticles into polyvinyl alcohol/chitosan (PVA/CS) electrospun nanofiber membranes to boost desalination performance. The PVA/CS/GO-Ag

Deep-learning recognition and tracking of individual nanotubes in low-contrast microscopy videos

• Vladimir Pimonov,
• Said Tahir and
• Vincent Jourdain

Beilstein J. Nanotechnol. 2025, 16, 1316–1324, doi:10.3762/bjnano.16.96

• situ imaging platforms for nanomaterials, such as environmental transmission electron microscopy (ETEM) of CNTs [31][33] and environmental scanning electron microscopy (ESEM) of graphene growth and etching processes [34]. Snapshots from (a) the raw video of carbon nanotube (CNT) synthesis on a stable

Better together: biomimetic nanomedicines for high performance tumor therapy

• Imran Shair Mohammad,
• Gizem Kursunluoglu,
• Anup Kumar Patel,
• Hafiz Muhammad Ishaq,
• Cansu Umran Tunc,
• Dilek Kanarya,
• Mubashar Rehman,
• Omer Aydin and
• Yin Lifang

Beilstein J. Nanotechnol. 2025, 16, 1246–1276, doi:10.3762/bjnano.16.92

• , a ligand of transferrin receptor, and NGR peptide, a ligand of CD13 [127]. Dual modification with the peptides yielded the ability to overcome the BBB and target the glioma. In another study, RBC-covered graphene oxide quantum dots (GTDC@M) were investigated regarding the targeted therapy of

Functional bio-packaging enhanced with nanocellulose from rice straw and cinnamon essential oil Pickering emulsion for fruit preservation

• Tuyen B. Ly,
• Duong D. T. Nguyen,
• Hieu D. Nguyen,
• Yen T. H. Nguyen,
• Bup T. A. Bui,
• Kien A. Le and
• Phung K. Le

Beilstein J. Nanotechnol. 2025, 16, 1234–1245, doi:10.3762/bjnano.16.91

• degradation byproducts [8][9]. One problem is that the hydrophilic structure of PVA gives it a high water-solubility, water uptake, and worse mechanical properties [10][11]. Different filler and nanomaterials including silica [12][13][14], graphene [15][16], and metals [17][18] have been added to PVA to