Sensitive H2 gas sensors based on SnO2 nanowires

Lu, Sihang; Zhang, Yuzhu; Liu, Jingyao; Li, Huayao; Hu, Zhixiang; Xie, Luo; Gao, Naibo; Bao, Zhenan; Jiang, Jianjun; Zhong, Aihua; Luo, Jingting; Liu, Huan

doi:10.1016/j.snb.2021.130334

Cited by 96 publications

(40 citation statements)

References 64 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…174 Other metal oxides were also employed for various kinds of gas sensors, such as porous CuFeO 2 nanospheres for acetone sensors, 175 N atom-incorporated SnO 2 porous nanostructures for acetone sensors, 176 dispersed WO 3 nanoparticles with a porous nanostructure for toluene sensors, 177 Pt-doped SnO 2 a flower-like hierarchical nanostructure for isopropanol sensors, 178 metal−organic framework-derived α-Fe 2 O 3 with partially covered cobalt tungstate for ethyl acetate sensors, 179 and porous network of SnO 2 nanowires for H 2 sensors. 180 Additionally, various forms of composites have been devised and synthesized by several research groups, using a solvothermal method. For instance, Zhang et al reported on the self-sacrificial template-driven synthesis of LaFeO 3 /α-Fe 2 O 3 porous nanooctahedrons by the solvothermal method, 181 which resulted in significantly enhanced sensing performance for acetone.…”

Section: Smos Produced By Solvothermal Methodmentioning

confidence: 99%

Review on Porosity Control in Nanostructured Semiconducting Metal Oxides and Its Influence on Chemiresistive Gas Sensing

Bulemo

Cheong

2023

ACS Appl. Nano Mater.

View full text Add to dashboard Cite

Nanostructured semiconducting metal oxides (SMOs) hold the potential for playing a critical role in gas-sensing applications due to their interconnected nanograins, large surface area, and shorter diffusion length. The rational introduction of ubiquitous porosity in SMOs can enhance gas/air diffusion as well as the accessibility of nanograins and reactive sites. Although much work has been researched for adopting highly porous nanostructured SMOs to enhance gas sensing, no comprehensive review on porosity control has yet been presented. In this review, the latest porosity control methods for SMOs, structural properties, and their gas-sensing results are reported. Finally, perspective on porosity control methods and future directions are provided for further development and research of porous SMO-based gas-sensing nanomaterials.

show abstract

Section: Smos Produced By Solvothermal Methodmentioning

confidence: 99%

Review on Porosity Control in Nanostructured Semiconducting Metal Oxides and Its Influence on Chemiresistive Gas Sensing

Bulemo

Cheong

2023

ACS Appl. Nano Mater.

View full text Add to dashboard Cite

show abstract

“…Notably, Pd, Au and Pt noble metals exhibit excellent activity on the catalytic reaction, which can greatly boost the adsorption of H 2 on the surface of MOSs and the reaction with reactive oxygen species [19][20][21]. The catalytic reaction of noble metal can endow more H 2 participate in the sensing reaction process, resulting in a much thicker of electron depletion layer, which is an effective strategy to improve the H 2 sensing performance of MOSs sensitive material [22]. Cheng et al [23] con rmed that deposition of Pt nanoparticles on ZnO sensor can obviously boost the H 2 sensing performance.…”

Section: Introductionmentioning

confidence: 99%

Pd decorated ZnO nanosheets for enhanced hydrogen sensing performance

Dong

Zhao

Peng

et al. 2023

Preprint

View full text Add to dashboard Cite

With the exhaustion of fossil energy, hydrogen (H2), as a kind of clean energy with extensive source and high calorific value, has attracted great attention. However, in the process of H2 preparation, transportation and storage, safety accidents such as leakage and explosion often occur, which greatly hinders the development and utilization of H2. Therefore, fast and accurate detection of H2 plays an important role in H2 industry. Based on this, we have synthesized two-dimensional (2D) zinc oxide (ZnO) nanosheets by hydrothermal method, and further optimized its sensing performance through Pd modification. H2 sensitivity test results show that Pd load can greatly enhance the sensing performance of 2D ZnO materials. At 160°C, the sensing response of Pd load ZnO sensitive materials (PZO) towards H2 (100 ppm) is 17.6, which is much higher than the pure ZnO nanosheets (3.2). Additionly, the H2 sensing performance of the prepared gas sensor did not change significantly during the 30-days test, showing excellent stability. The H2 sensing mechanism of PZO sensitive materials is mainly attributed to the synergistic mechanism of Pd catalytic site and oxygen vacancy (OV). Therefore, the synthesized PZO sensitive material provides an effective strategy for the preparation of high-performance H2 sensors.

show abstract

“…Several advanced nanomaterials are known for nanocatalysis [ 23 , 24 , 25 , 26 ], and rich fabrication techniques are known [ 27 , 28 , 29 ] for their stabilization. The focus in designing the metal oxide nanostructures and their composites is on enhancing their properties of gas sensing such as response speed, selectivity and sensitivity [ 30 ].…”

Section: Introductionmentioning

confidence: 99%

Tin Oxide Based Hybrid Nanostructures for Efficient Gas Sensing

Pandit

Ahmad

2022

Molecules

View full text Add to dashboard Cite

Tin oxide as a semiconductor metal oxide has revealed great potential in the field of gas sensing due to its porous structure and reduced size. Especially for tin oxide and its composites, inherent properties such as high surface areas and their unique semiconducting properties with tunable band gaps make them compelling for sensing applications. In combination with the general benefits of metal oxide nanomaterials, the incorporation of metal oxides into metal oxide nanoparticles is a new approach that has dramatically improved the sensing performance of these materials due to the synergistic effects. This review aims to comprehend the sensing mechanisms and the synergistic effects of tin oxide and its composites in achieving high selectivity, high sensitivity and rapid response speed which will be addressed with a full summary. The review further vehemently highlights the advances in tin oxide and its composites in the gas sensing field. Further, the structural components, structural features and surface chemistry involved in the gas sensing are also explained. In addition, this review discusses the SnO2 metal oxide and its composites and unravels the complications in achieving high selectivity, high sensitivity and rapid response speed. The review begins with the gas sensing mechanisms, which are followed by the synthesis methods. Further key results and discussions of previous studies on tin metal oxide and its composites are also discussed. Moreover, achievements in recent research on tin oxide and its composites for sensor applications are then comprehensively compiled. Finally, the challenges and scope for future developments are discussed.

show abstract

Sensitive H2 gas sensors based on SnO2 nanowires

Cited by 96 publications

References 64 publications

Review on Porosity Control in Nanostructured Semiconducting Metal Oxides and Its Influence on Chemiresistive Gas Sensing

Review on Porosity Control in Nanostructured Semiconducting Metal Oxides and Its Influence on Chemiresistive Gas Sensing

Pd decorated ZnO nanosheets for enhanced hydrogen sensing performance

Tin Oxide Based Hybrid Nanostructures for Efficient Gas Sensing

Contact Info

Product

Resources

About