| Full text | |
| Author(s): |
Joshi, Nirav
[1, 2]
;
Hayasaka, Takeshi
[2]
;
Liu, Yumeng
[2]
;
Liu, Huiliang
[2, 3]
;
Oliveira, Jr., Osvaldo N.
[1]
;
Lin, Liwei
[2, 3]
Total Authors: 6
|
| Affiliation: | [1] Univ Sao Paulo, Sao Carlos Inst Phys, BR-13560970 Sao Carlos, SP - Brazil
[2] Univ Calif Berkeley, Dept Mech Engn, Berkeley, CA 94720 - USA
[3] Tsinghua Berkeley Shenzhen Inst, Shenzhen 518055 - Peoples R China
Total Affiliations: 3
|
| Document type: | Review article |
| Source: | Microchimica Acta; v. 185, n. 4 APR 2018. |
| Web of Science Citations: | 97 |
| Abstract | |
Room-temperature (RT) gas sensing is desirable for battery-powered or self-powered instrumentation that can monitor emissions associated with pollution and industrial processes. This review (with 171 references) discusses recent advances in three types of porous nanostructures that have shown remarkable potential for RT gas sensing. The first group comprises hierarchical oxide nanostructures (mainly oxides of Sn, Ni, Zn, W, In, La, Fe, Co). The second group comprises graphene and its derivatives (graphene, graphene oxides, reduced graphene oxides, and their composites with metal oxides and noble metals). The third group comprises 2D transition metal dichalcogenides (mainly sulfides of Mo, W, Sn, Ni, also in combination with metal oxides). They all have been found to enable RT sensing of gases such as NOx, NH3, H-2, SO2, CO, and of vapors such as of acetone, formaldehyde ormethanol. Attractive features also include high selectivity and sensitivity, long-term stability and affordable costs. Strengths and limitations of these materials are highlighted, and prospects with respect to the development of new materials to overcome existing limitations are discussed. (AU) | |
| FAPESP's process: | 16/23474-6 - Nanomaterial-based heterostructures: synthesis and their gas sensing properties |
| Grantee: | Niravkumar Jitendrabhai Joshi |
| Support Opportunities: | Scholarships abroad - Research Internship - Post-doctor |
| FAPESP's process: | 14/23546-1 - Enhanced sensitive and selective sensors made with p-NiO nanowire/n-ZnO Nanowire heterostructures |
| Grantee: | Niravkumar Jitendrabhai Joshi |
| Support Opportunities: | Scholarships in Brazil - Post-Doctoral |