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

• the hydrogel contributes to the improvement of the electronic conductivity of weakly conductive electrocatalysts, such as metal oxides, ultimately affecting their catalytic efficiency and thus reducing the overpotential of the oxygen evolution reaction (OER) process [46]. In this work, we suspended

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

• Sn 3d line profiles suggest the formation of a single-phase compound. The 2+ and 4+ charge states possible for Sn in its oxides have only a small (approx. 0.8 eV) difference in binding energy, which is less than the linewidth (FWHM ≈ 1.2 eV) of either compound [27][28]. Therefore, for mixed-phase

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

• refrigeration compressors are metal oxides and carbon-based nanoparticles [11][12]. It is emphasized that both kinds of nanoparticles have positive effects on system performance. Krishnan et al. [13]. examined the effects of addition of metal oxide nanoparticles of Al2O3, SiO2, ZrO2, and carbon-based

• reporting improvement in compressor performance are given in Table 1. Accordingly, it can be noted that the compressor energy consumption reduces mediately 30% with the use of nanolubricants. The literature shows that metal oxides and carbon-based nanoparticles are mainly preferred in nanolubricants used in

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

• additional peroxidase substrates in LFAs increased the detection limit from the nanogram to the picogram level [16][17]. Various tracer elements have been developed to increase the sensitivity of an assay, including noble metal nanomaterials, metal oxides, plasmonic nanostructures, carbon-based materials

• properties, that is, plasmonic materials (e.g., Au, Ag, and Pt), semiconductor materials (e.g., transition metal oxides, transition metal chalcogenides, and transition metal dichalcogenides), carbon-based nanomaterials (such as graphene oxide and carbon nanotubes), and polymer nanomaterials [33][34] (Figure

Metal-organic framework-based nanomaterials for CO₂ storage: A review

• Ha Huu Do,
• Iqra Rabani and
• Hai Bang Truong

Beilstein J. Nanotechnol. 2023, 14, 964–970, doi:10.3762/bjnano.14.79

• dramatic growth of 3.46 mmol·g−1 in the amount of absorbed CO2 after the modification, ascribed to the improved pore space by MWCNTs. In another work, MOF/carbon-based composites were reported by Liu and coworkers [40]. The authors used graphene oxides as templates for growing Cu-MOF nanograins for gas

Prediction of cytotoxicity of heavy metals adsorbed on nano-TiO₂ with periodic table descriptors using machine learning approaches

• Joyita Roy,
• Souvik Pore and
• Kunal Roy

Beilstein J. Nanotechnol. 2023, 14, 939–950, doi:10.3762/bjnano.14.77

• attention due to their widespread applications in different areas, and they are continually designed to yield certain desired properties [1]. With the uninterrupted development of new NPs, engineered nanoparticles in the form of metal oxide nanoparticles are becoming a new area of research. Metal oxides

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

• (P, As, Sb and Bi)) to multielementals (e.g., boron nitrate, metal dichalcogenides, MXenes, layered metal/covalent organic frameworks, or layered hydroxides/oxides) [9][10][11]. These systems exhibit an enormous variability in their physicochemical properties, which are defined by their layer-to

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

• by Wu et al., Cu-based MOF nanosheets were utilized for CO2 reduction to formate and acetate (Figure 5a,b) [49]. The authors observed that Cu2+ nodes underwent conversion to copper oxides under operational conditions. The presence of these species, along with a porphyrin–Cu(II) complex, resulted in

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

• stress within biological systems [11]. Nanoceria in plant systems Nanoceria acts as colloids in aqueous environments, in the soil near plant root systems, and within bodily fluids. Acetic, citric, lactic, succinic, and tartaric acid secreted from plant roots are known to complex with metals/metal oxides

• ). Instead, approximately 5 nm features were observed at weeks 2, 4, and 8. These features were not stable and were altered by the high-intensity electron beam, confirming that they are not cerium oxides (Figure S2, Supporting Information File 1). Allen et al. [54] showed similar results and considered how

The microstrain-accompanied structural phase transition from h-MoO₃ to α-MoO₃ investigated by in situ X-ray diffraction

• Zeqian Zhang,
• Honglong Shi,
• Boxiang Zhuang,
• Minting Luo and
• Zhenfei Hu

Beilstein J. Nanotechnol. 2023, 14, 692–700, doi:10.3762/bjnano.14.55

• from +2 to +6 [1][2], leading to a range of molybdenum oxides. Molybdenum oxides include the fully stoichiometric MoO3 with a large bandgap above 2.7 eV, the reduced oxides MoO3−x with oxygen vacancies, and the semimetal MoO2. The degree of reduction influences the bandgap energy of molybdenum oxides

• ], β-MoO3 [15][16], h-MoO3 [17], γ-MoO3 [18], and the high-pressure phase MoO3-II [19]. α-MoO3 and β-MoO3 are the two most commonly reported molybdenum oxides. α-MoO3 is a thermodynamically stable orthorhombic phase. It is a layered crystal with strong covalent bonding within the layers and weak van

Metal-organic framework-based nanomaterials as opto-electrochemical sensors for the detection of antibiotics and hormones: A review

• Akeem Adeyemi Oladipo,
• Saba Derakhshan Oskouei and
• Mustafa Gazi

Beilstein J. Nanotechnol. 2023, 14, 631–673, doi:10.3762/bjnano.14.52

• devices. The most often employed nanomaterials for electrochemical sensors are divided into four categories based on their chemical makeup: (i) metal oxides and metal-based materials (including MOF), (ii) dendrimers and polymer-based, (iii) carbonaceous materials, and (iv) hybrids or composites. Because

• oxides) [63][64][65][66][67][68][69]. This is motivated by their large surface area, which can facilitate the loading of nanoparticles. Additionally, MOFs have been converted into their electrochemically active derivatives, such as mesoporous carbon composites and porous metal oxides, to achieve an

Specific absorption rate of randomly oriented magnetic nanoparticles in a static magnetic field

• Ruslan A. Rytov and
• Nikolai A. Usov

Beilstein J. Nanotechnol. 2023, 14, 485–493, doi:10.3762/bjnano.14.39

• hyperthermia; magnetic nanoparticles; magnetic particle imaging; specific absorption rate; static magnetic field; Introduction Magnetic nanoparticles, mainly iron oxides, are promising materials for the diagnosis and therapy of oncological diseases [1][2][3]. Important fields of application of magnetic

Mixed oxides with corundum-type structure obtained from recycling can seals as paint pigments: color stability

• Dienifer F. L. Horsth,
• Julia de O. Primo,
• Nayara Balaba,
• Fauze J. Anaissi and
• Carla Bittencourt

Beilstein J. Nanotechnol. 2023, 14, 467–477, doi:10.3762/bjnano.14.37

• , Guarapuava, 85040-167, Brazil 10.3762/bjnano.14.37 Abstract Green chromium and red iron oxides are technically important pigments due to their high color intensity, good dispersibility in paints, and superior hiding power. We report on the synthesis of colored pigments of mixed oxides with a corundum-type

• ) coloration of the mixed oxides was confirmed by XPS and visible-light absorption measurements. The colorimetric stability of the oxides in acid and alkaline environments was evaluated. After 240 h of exposure to harsh environments, both pigments demonstrated stability and showed no strong color difference

• obtaining boehmite, we added chromium and iron ions to obtain colored mixed oxides with a corundum-type structure. The stability of the synthesized pigments in acid and alkaline environments was evaluated by colorimetric measurements. Results and Discussion X-ray diffractometry (XRD) The XRD of the pristine

Evaluation of electrosynthesized reduced graphene oxide–Ni/Fe/Co-based (oxy)hydroxide catalysts towards the oxygen evolution reaction

• Karolina Cysewska,
• Marcin Łapiński,
• Marcin Zając,
• Jakub Karczewski,
• Piotr Jasiński and
• Sebastian Molin

Beilstein J. Nanotechnol. 2023, 14, 420–433, doi:10.3762/bjnano.14.34

• Cracow, Poland 10.3762/bjnano.14.34 Abstract In this work, the specific role of the addition of graphene oxide (GO) to state-of-the-art nickel–iron (NiFe) and cobalt–nickel–iron (CoNiFe) mixed oxides/hydroxides towards the oxygen evolution reaction (OER) is investigated. Morphology, structure, and OER

• friendly nature [11]. Even though transition-metal-based catalysts still suffer from low surface areas [12], dissolution and aggregation of metallic phase and metal oxides during the active OER process occurs [13]. Hence, Ni-, Fe- and/or Co-based catalysts have been synthesized as hybrid catalysts with

• graphene material with Ni-, Fe- and/or Co-based oxides/hydroxides with high chemical reactivity provides both an effective electron pathway through the catalyst [20] and high specific surface area [21], which is desirable for the OER process [13]. The overall electrocatalytic performance of the hybrid

Plasmonic nanotechnology for photothermal applications – an evaluation

• A. R. Indhu,
• L. Keerthana and
• Gnanaprakash Dharmalingam

Beilstein J. Nanotechnol. 2023, 14, 380–419, doi:10.3762/bjnano.14.33

Bismuth-based nanostructured photocatalysts for the remediation of antibiotics and organic dyes

• Akeem Adeyemi Oladipo and
• Faisal Suleiman Mustafa

Beilstein J. Nanotechnol. 2023, 14, 291–321, doi:10.3762/bjnano.14.26

• semiconductor as well as the redox levels of the substrate [11][21]. One of the main barriers preventing photocatalysis from being used in practical applications is the lack of suitable semiconductor photocatalysts. The commonly used nanometre-sized photocatalysts are metal oxides or sulfides (binary compounds

• susceptibility, ferroelectricity, photostability and useful electrical properties [102][103][104][105]. The highest visible-light photocatalytic activity among bismuth-based oxides with a similar structure has been observed for Bi2WO6, which can be attributed to its distinctive structure [103][104]. It is

• allow for the integration of multiple functions derived from various types of nanocatalysts, such as semiconductor nanoparticles, plasmonic metals, and carbon-based and magnetic oxides, into the same host matrix. This enables effective tuning of the photocatalytic characteristics of the final

Recent progress in cancer cell membrane-based nanoparticles for biomedical applications

• Qixiong Lin,
• Yueyou Peng,
• Yanyan Wen,
• Xiaoqiong Li,
• Donglian Du,
• Weibin Dai,
• Wei Tian and
• Yanfeng Meng

Beilstein J. Nanotechnol. 2023, 14, 262–279, doi:10.3762/bjnano.14.24

• by enhancing proton relaxation in tissues [120]. Among them, superparamagnetic iron oxides (SPIONs) are widely used with numerous advantages, such as small size, colloidal stability, low toxicity, magnetic heating properties, and enhanced molecular MRI [121]. However, SPIONs cannot be effectively

A novel approach to pulsed laser deposition of platinum catalyst on carbon particles for use in polymer electrolyte membrane fuel cells

• Bogusław Budner,
• Wojciech Tokarz,
• Sławomir Dyjak,
• Andrzej Czerwiński,
• Bartosz Bartosewicz and
• Bartłomiej Jankiewicz

Beilstein J. Nanotechnol. 2023, 14, 190–204, doi:10.3762/bjnano.14.19

• , FWHM 1.58 ± 0.14 eV). In both cases, the metallic form of Pt dominates and constitutes 64.3% and 76.6% for material A and 20% Pt XC-72R, respectively (data on the graph). Among the oxides, the PtO form is dominant and constitutes 21.4% and 14.3% for material A and 20% Pt XC-72R, respectively. These

Two-step single-reactor synthesis of oleic acid- or undecylenic acid-stabilized magnetic nanoparticles by thermal decomposition

• Mykhailo Nahorniak,
• Pamela Pasetto,
• Jean-Marc Greneche,
• Volodymyr Samaryk,
• Sandy Auguste,
• Anthony Rousseau,
• Nataliya Nosova and
• Serhii Varvarenko

Beilstein J. Nanotechnol. 2023, 14, 11–22, doi:10.3762/bjnano.14.2

• of Sciences, Heyrovského nám. 2, 162 06 Prague 6, Czech Republic Institut des Molécules et Matériaux du Mans (IMMM), UMR 6283 CNRS − Le Mans Université, Avenue Olivier Messiaen, 72085 Le Mans Cedex, France 10.3762/bjnano.14.2 Abstract Different iron oxides (i.e., magnetite, maghemite, goethite

• mol of acetylacetonate and up to 5.5 mol/mol. Below the mentioned limit, NPM dispersions were colloidally unstable, and at higher ratios no NPM were formed which could be precipitated by an applied magnetic field. Monodisperse nanoparticles of iron oxides were synthesized with a diameter of 8–13 nm

• oxide nanoparticles in biomedicine requires in-depth studies of their structure and properties. It was well-established that different iron oxides (e.g., magnetite (Fe3O4), maghemite (γ-Fe2O3), goethite (α-FeOOH), and wüstite (FeO)), have a divergent impact on biological objects [7]. In this regard

Hydroxyapatite–bioglass nanocomposites: Structural, mechanical, and biological aspects

• Olga Shikimaka,
• Mihaela Bivol,
• Bogdan A. Sava,
• Marius Dumitru,
• Christu Tardei,
• Beatrice G. Sbarcea,
• Daria Grabco,
• Constantin Pyrtsac,
• Daria Topal,
• Andrian Prisacaru,
• Vitalie Cobzac and
• Viorel Nacu

Beilstein J. Nanotechnol. 2022, 13, 1490–1504, doi:10.3762/bjnano.13.123

• , P, and Na, in the form of oxides, and SiO2, which was proven to be a very useful component for CHA formation, as well as for angiogenesis processes and collagen formation [8][9]. Since the discovery of 45S5 Bioglass, a wide range of bioglasses have been elaborated and investigated, which can be

• divided into the following large groups: (i) silicate-based bioglasses (SBG), (ii) phosphate-based bioglasses (PBG), and (iii) borate-based bioglasses (BBG). The chemical composition of the glass, the ratio of its constituent oxides, and the glass structure have a determinative influence on its biological

Straight roads into nowhere – obvious and not-so-obvious biological models for ferrophobic surfaces

• Wilfried Konrad,
• Christoph Neinhuis and
• Anita Roth-Nebelsick

Beilstein J. Nanotechnol. 2022, 13, 1345–1360, doi:10.3762/bjnano.13.111

• problem: Failing blast furnace tuyères In this section, the problem and its technical and economical relevance will be briefly outlined. Iron ore consists mostly of iron oxides, which have to be reduced in order to obtain metallic iron (or steel). This is primarily achieved via the blast furnace pathway

Near-infrared photoactive Ag-Zn-Ga-S-Se quantum dots for high-performance quantum dot-sensitized solar cells

• Roopakala Kottayi,
• Ilangovan Veerappan and
• Ramadasse Sittaramane

Beilstein J. Nanotechnol. 2022, 13, 1337–1344, doi:10.3762/bjnano.13.110

• [4][5][6][7]. At present, QDSCs have reached 14.4% efficiency. In QDSCs, QDs are added to the metal oxides. Our earlier reports demonstrated that porous TiO2 nanofibers possess an enormous surface area for the maximum absorption of QDs [8][9][10]. For the past decades, binary or ternary QDs based on

Recent trends in Bi-based nanomaterials: challenges, fabrication, enhancement techniques, and environmental applications

• Vishal Dutta,
• Ankush Chauhan,
• Ritesh Verma,
• C. Gopalkrishnan and
• Van-Huy Nguyen

Beilstein J. Nanotechnol. 2022, 13, 1316–1336, doi:10.3762/bjnano.13.109

• environmentally beneficial alternatives [7]. The choice of the photocatalysts is one of the most important steps in attaining high performance in photocatalysis. Semiconductors with bandgaps greater than 3 eV are called wide-bandgap photocatalysts. These semiconductors include oxides (e.g., TiO2, Bi2O3, Bi2WO6

• scientific community in environmental cleanup using bismuth-based nanoparticles (Figure 1). In recent years, an abundance of Bi-based photocatalysts has been reported. The most commonly used Bi-based photocatalysts include metallic Bi, Bi-based binary oxides, Bi-based oxyhalides, Bi-based multicomponent

• oxides, and binary Bi sulfides. Bismuth oxyhalides are indirect bandgap semiconductors in which photogenerated electrons and holes rarely recombine. BiOX is an excellent photocatalyst, and it is widely applied due to its small bandgap and high electron density, which are easily adjustable by changing the

Design of surface nanostructures for chirality sensing based on quartz crystal microbalance

• Yinglin Ma,
• Xiangyun Xiao and
• Qingmin Ji

Beilstein J. Nanotechnol. 2022, 13, 1201–1219, doi:10.3762/bjnano.13.100

• considered to be the most promising platform for enantiospecific sensing and may also be explored for chiral separation and catalysis [111]. Induced chiral metal or inorganic oxides Based on the template strategy, metals or inorganic oxides with chiral channels could be fabricated by using chiral templates

Application of nanoarchitectonics in moist-electric generation

• Jia-Cheng Feng and
• Hong Xia

Beilstein J. Nanotechnol. 2022, 13, 1185–1200, doi:10.3762/bjnano.13.99

• discussed in detail. 2 Inorganic nanomaterials for MEG 2.1 Carbon nanotubes and carbon nanoparticles Among inorganic nanomaterials, carbon nanoparticles, carbon nanotubes, graphene, graphene oxide, metal oxides, and transition metal chalcogenides (TMDs) have been reported so far regarding applications in