Crystalline structure controlled of In2O3 sensing platforms for sensitive H2S performance at low temperature

被引：29

作者：

Jin, Zhidong ^{[1
,2
]}

Mou, Yue ^{[1
,2
]}

Zhao, Jinbo ^{[3
]}

Chen, Chuanzhi ^{[4
]}

Zhou, Huan ^{[4
]}

Xiang, Nan ^{[4
]}

Wang, Fenglong ^{[1
,2
]}

Wang, Zhou ^{[1
,2
]}

Liu, Jiurong ^{[1
,2
]}

Wu, Lili ^{[1
,2
]}

机构：

[1] Shandong Univ, Key Lab Liquid Solid Struct Evolut & Proc Mat, Minist Educ, Jinan 250061, Shandong, Peoples R China

[2] Shandong Univ, Sch Mat Sci & Engn, Jinan 250061, Shandong, Peoples R China

[3] Qilu Univ Technol, Shandong Acad Sci, Sch Mat Sci & Engn, Jinan 250353, Shandong, Peoples R China

[4] PLA army, Inst NBC Def, Beijing 102205, Peoples R China

来源：

SENSORS AND ACTUATORS B-CHEMICAL | 2024年 / 401卷

关键词：

Crystal structure; H2S; Gas sensor; GAS; SIZE; NANOFLOWERS;

D O I：

10.1016/j.snb.2023.135026

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

Regulation based on the crystalline structure modulations is capable of optimizing the band gap and chemisorbed oxygen components thus adjusting the gas sensing characteristics of sensing materials. Herein, In2O3 hierarchical-assembled microspheres with diverse crystalline structures were synthesized via a simple hydrothermal method combined with calcinating procedure under different temperatures. The gas sensor based on rhombohedral In2O3 (rh-In2O3) microspheres assembled by pine needle shaped nanorods annealed at 350 degrees C (350-In2O3) exhibited superior H2S sensing performances at relative low operating temperature of 100 degrees C with low detection limit (50 ppb) and optimized stability compared with cubic In2O3 (c-In2O3). Notably, H2S sensing characteristics of In2O3 samples with different crystalline structures certificated that crystal structures can dominate the H2S sensing reactions with different mechanisms. This work enlightened a novel prospect for designing rh-In2O3 based sensors and provides an innovative pathway for analyzing the feasible H2S sensing mechanisms.

引用

页数：13

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