Tin dioxide nanomaterial-based photocatalysts for nitrogen oxide oxidation: a review

• Viet Van Pham,
• Hong-Huy Tran,
• Thao Kim Truong and
• Thi Minh Cao

Beilstein J. Nanotechnol. 2022, 13, 96–113, doi:10.3762/bjnano.13.7

• enables good UV and vis absorption thus extending the light-responsive range. As a result, such a CuInS2/TiO2/SnO2 heterostructure presented one of the highest photocatalytic efficacies (51.7%) in acetaldehyde removal. However, this work also opens some new questions for future studies on optimizing the

Electrospun one-dimensional nanostructures: a new horizon for gas sensing materials

• Muhammad Imran,
• Nunzio Motta and
• Mahnaz Shafiei

Beilstein J. Nanotechnol. 2018, 9, 2128–2170, doi:10.3762/bjnano.9.202

• flow or disperse to form a uniform homogeneous solution. The former gives rise to bi-component nanofibers, while the latter produces blended polymer fibers. Dual-layer TiO2/SnO2 nanofibers have been reported by Liu et al. [72] using two syringes containing different solutions linked to a common

Nanocrystalline TiO₂/SnO₂ heterostructures for gas sensing

• Barbara Lyson-Sypien,
• Anna Kusior,
• Mieczylaw Rekas,
• Jan Zukrowski,
• Marta Gajewska,
• Katarzyna Michalow-Mauke,
• Thomas Graule,
• Marta Radecka and
• Katarzyna Zakrzewska

Beilstein J. Nanotechnol. 2017, 8, 108–122, doi:10.3762/bjnano.8.12

• Laboratories for Materials Testing and Research, Laboratory for High Performance Ceramics, Uberlandstrasse 129, 8600 Duebendorf, Switzerland Paul Scherrer Institut, 5232 Villigen PSI, Switzerland 10.3762/bjnano.8.12 Abstract The aim of this research is to study the role of nanocrystalline TiO2/SnO2 n–n

• the range of 3–27 nm. Tin exhibits only the oxidation state 4+. The H2 detection threshold for the studied TiO2/SnO2 heterostructures is lower than 1 ppm especially in the case of SnO2-rich samples. The recovery time of SnO2-based heterostructures, despite their large responses over the whole

• measuring range, is much longer than that of TiO2-rich samples at higher H2 flows. TiO2/SnO2 heterostructures can be intentionally modified for the improved H2 detection within both the small (1–50 ppm) and the large (50–3000 ppm) concentration range. The temperature Tmax at which the semiconducting

Nanostructured TiO₂-based gas sensors with enhanced sensitivity to reducing gases

• Wojciech Maziarz,
• Anna Kusior and
• Anita Trenczek-Zajac

Beilstein J. Nanotechnol. 2016, 7, 1718–1726, doi:10.3762/bjnano.7.164

• importance to consciously design the method of preparation. Another way to improve sensing properties is the combination of two dissimilar materials [32]. For the past few decades, the TiO2/SnO2 coupled system has been a subject of intensive research [18][27][33]. This synergetic system modifies the

• . The as-obtained pore network and fine grains of titanium dioxide nanoflowers promote high surface-to-volume ratio, which favor the p-type behavior. Finally, the presence of tin dioxide nanoparticles induce creation of intimate electrical contact at the TiO2/SnO2 interface [32], along which electron

• comparison with the data presented in the literature [2] the response times presented on Figure 5 are significantly shorter for both TiO2 and TiO2/SnO2-based sensors. Considerably extended response and recovery times are observed for flower-like nanostructured sensors. This could be due to the fact that the

Kelvin probe force microscopy of nanocrystalline TiO₂ photoelectrodes

• Alex Henning,
• Gino Günzburger,
• Res Jöhr,
• Yossi Rosenwaks,
• Biljana Bozic-Weber,
• Catherine E. Housecroft,
• Edwin C. Constable,
• Ernst Meyer and
• Thilo Glatzel

Beilstein J. Nanotechnol. 2013, 4, 418–428, doi:10.3762/bjnano.4.49

• built-in potential on the DSC performance at the TiO2/SnO2:F interface, investigated on a nanometer scale by KPFM measurements under visible light illumination, has not been resolved so far. Keywords: atomic force microscopy (AFM); dye-sensitized solar cells (DSC); Kelvin probe force microscopy (KPFM

• reached by the incident light [19]. In the present work, the sample was illuminated with focused light from an optical fiber or directly with a laser. The measured SPV can have two contributions, one from the TiO2/SnO2:F interface and the other from the TiO2 layer depending on the energy of the incident

• that the SPV under sub-bandgap illumination results from a reduction of the built-in potential, Vbi, at the TiO2/SnO2-interface. This built-in electric field is screened by the photogenerated charge carriers resulting in a downward band bending of the TiO2 conduction band edge Ecb. The measured SPV of

Nanostructure-directed chemical sensing: The IHSAB principle and the dynamics of acid/base-interface interaction

• James L. Gole and
• William Laminack

Beilstein J. Nanotechnol. 2013, 4, 20–31, doi:10.3762/bjnano.4.3

• gas and metal oxides. The dynamic interaction of NO with TiO2, SnO2, NiO, CuxO, and AuxO (x >> 1), in order of decreasing acidity, demonstrates this effect. Interactions with the metal-oxide-decorated interface can be modified by the in situ nitridation of the oxide nanoparticles, enhancing the

• broader-based and predicts reversible sensor–analyte interactions. The fractional deposition of TiO2, SnO2, NiO, CuxO, and AuxO (x >> 1) nanostructured islands (Figure 1) modifies the sensitivity response of the extrinsic porous silicon interface. The deposited nanostructures, in effect, dominate the PS

• decorated surface is five times more responsive than the untreated PS interface [24]. For p+-type PS, TiO2, SnO2, CuxO, and AuxO decorated surfaces are respectively ≥ 4, 2.5, 3–3.5, and 7 times more responsive. The analyte response data forms the basis for the development of the materials positioning