Improving H2 gas sensing with ZnMn2O4/Polypyrrole Nanocomposite

被引:0
作者
Azmoodeh, Zivar [1 ]
Nasirian, Shahruz [2 ]
Moghaddam, Hossain Milani [1 ]
机构
[1] Univ Mazandaran, Fac Basic Sci, Dept Solid State Phys, Babolsar 4741695447, Iran
[2] Mazandaran Univ Sci & Technol, Dept Elect & Med Engn, Babol, Iran
关键词
Microcube structure; Polypyrrole; Nanocomposite; Hydrogen gas sensing; OXIDE NANOCOMPOSITES; AMMONIA DETECTION; THIN-FILM; NANOPARTICLES; POLYANILINE; PERFORMANCE; NANOSTRUCTURES; NANOFIBERS; COMPOSITE; NANORODS;
D O I
10.1016/j.ijhydene.2024.08.199
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
Here we report the operation of p-p heterojunction for improving the H-2 gas sensing performance of ZnMn2O4/Polypyrrole nanocomposite (PZ) at room temperature. ZnMn2O4 (ZM) with a unique cubic morphology and porous architecture was synthesized via a one-step hydrothermal method. Polypyrrole (PPy) fibers and PZs were prepared through chemical oxidative polymerization of pyrrole monomers in the absence and presence of different weight percentages (wt%) of ZM, respectively. Our findings show that the PZs consisted of microcubic ZMs with dimensions of approximately 8 mu m, covered with wire-like PPy fibers. The partial protonated PPy and different wt% of microcubic ZM have a significant effect on H-2 gas sensing. The response of our hand-made sensor increased with increasing wt% of ZM and gas level. The PZ samples exhibited the highest response of 1.23 (the lowest t(res) value of 21.6 s) at a concentration of 15000 (2500) ppm H-2 gas. Furthermore, the PZ sample contains 10 wt% of ZM demonstrated excellent long-term stability in response after six months, which indicates the accuracy and reliability of the sensor. H-2 gas mechanism of the PZ sensor was studied in details. The advantage of p-p heterojunction could provide a new perspective for H-2 gas sensing applications.
引用
收藏
页码:854 / 864
页数:11
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