Defective WO3 Nanosheets with (002)-Exposed Facet for Highly Sensitive Acetone Detection

被引：19

作者：

Ding, Jian ^{[1
]}

Chen, Shuqun ^{[2
]}

Xie, Mingyi ^{[1
]}

Shen, Yi ^{[1
]}

Li, Fei ^{[1
]}

Li, Jiangchun ^{[3
]}

Li, Zhen ^{[1
]}

Wang, Yang ^{[1
]}

机构：

[1] China Univ Geosci, Fac Mat Sci & Chem, Wuhan 430074, Peoples R China

[2] Beijing Univ Technol, Fac Mat & Mfg, Key Lab Adv Funct Mat, Educ Minist China, Beijing 100124, Peoples R China

[3] Hubei Univ Police, Hubei Key Lab Forens Sci, Wuhan 430035, Peoples R China

来源：

ACS APPLIED NANO MATERIALS | 2023年 / 6卷 / 13期

基金：

中国国家自然科学基金;

关键词：

WO3; nanosheets; hydrothermal-hydrogenationprocess; acetone sensors; (002) face; oxygenvacancy defect; ENHANCED SENSING PROPERTIES; ULTRASOFT PSEUDOPOTENTIALS; GAS; SENSOR; NANOSTRUCTURES; MORPHOLOGIES; NANOFIBERS; ETHANOL; SURFACE;

D O I：

10.1021/acsanm.3c01928

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Defect and facet engineering arethe two effective approachestotune the surface reactivity of metal-oxide-based sensing materials.Here, oxygen vacancies defective of WO3 nanosheets withexposed (002) crystal facet [D-WO3-(002)] were obtainedby a simple hydrothermal-hydrogenation process. The resultsrevealed that a D-WO3-(002)-based acetone sensor exhibitsexcellent comprehensive gas sensitive performance: low limit of detection(0.5 ppm), wide range of 0.5-100 ppm (S =2.8 & SIM;45.6), high selectivity, fast response-recovery,and excellent repeatability. The outstanding gas-sensing performanceis attributed to the synergistic effects of the dominant (002) facetand the defect of oxygen vacancy structure, which effectively improvedthe surface reactivity of monoclinic WO3 nanosheets. Forhighly sensitive and wide range sensing performance, this work demonstratestremendous potential application prospect for environmental monitoringof acetone and non-invasive diagnosis of diabetes.

引用

页码：12211 / 12218

页数：8

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