Rationally Designed Dual-Mesoporous Transition Metal Oxides/Noble Metal Nanocomposites for Fabrication of Gas Sensors in Real-Time Detection of 3-Hydroxy-2-Butanone Biomarker

被引：76

作者：

Ma, Junhao ^{[1
]}

Li, Yanyan ^{[1
]}

Li, Jichun ^{[1
]}

Yang, Xuanyu ^{[1
]}

Ren, Yuan ^{[1
]}

Alghamdi, Abdulaziz A. ^{[2
]}

Song, Guoxin ^{[1
]}

Yuan, Kaiping ^{[3
]}

Deng, Yonghui ^{[1
,4
]}

机构：

[1] Fudan Univ, Dept Chem, Dept Gastroenterol & Hepatol,State Key Lab Mol En, Zhongshan Hosp,Shanghai Key Lab Mol Catalysis & I, Shanghai 200433, Peoples R China

[2] King Saud Univ, Dept Chem, Coll Sci, POB 2455, Riyadh 11451, Saudi Arabia

[3] Fudan Univ, Frontier Inst Chip & Syst, Shanghai 200433, Peoples R China

[4] Chinese Acad Sci, State Key Lab Transducer Technol, Shanghai Inst Microsyst & Informat Technol, Shanghai 200050, Peoples R China

来源：

ADVANCED FUNCTIONAL MATERIALS | 2022年 / 32卷 / 04期

基金：

中国博士后科学基金; 国家重点研发计划;

关键词：

gas sensors; mesoporous materials; noble metal nanoparticles; semiconductor metal oxides; LISTERIA-MONOCYTOGENES; CRYSTALLINE FRAMEWORK; SILICA NANOCOMPOSITES; COASSEMBLY APPROACH; TUNGSTEN-OXIDES; NANOPARTICLES; CATALYSTS; GOLD; NANOSTRUCTURES; PLATINUM;

D O I：

10.1002/adfm.202107439

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Transition metal oxides/noble metal (TMOs/NM) nanocomposites are one kind of important material for semiconductor gas sensors. The controllable construction of a highly connected mesoporous structure and easily accessible active sites is essential for gas sensing performance but remains a great challenge. Herein, a soluble mercapto phenolic resin polymer mediated co-assembly approach is proposed for the construction of ordered dual mesoporous structure and the simultaneous loading of highly dispersed noble metal nanoparticles. The home-made soluble mercapto phenolic resin polymer enabled the co-assembly of transition metal precursors, noble metal precursors, and poly(ethylene oxide)-block-polystyrene (PEO-b-PS) micelles, resulting in a straightforward synthesis of ordered dual-mesoporous TMOs/NM nanocomposites (e.g., WO3/Au, TiO2/Au, NbOx/AuPd). As proof of the concept, the synthesized dual-mesoporous WO3/Au materials are applied for sensing of 3-hydroxy-2-butanone, a biomarker of food-borne pathogenic bacteria Listeria monocytogenes. The sensors exhibit high sensitivity (R-a/R-g = 18.8 to 2.5 ppm) and high selectivity based on their noble metal sensitization and superior mesopore connectivity for gas diffusion. Furthermore, the synthesized gas sensors are integrated into a wireless sensing module connected to a smartphone, providing a rapid and convenient real-time detection of 3-hydroxy-2-butanone.

引用

页数：13