Ultra-efficient trimethylamine gas sensor based on Au nanoparticles sensitized WO3 nanosheets for rapid assessment of seafood freshness

被引：62

作者：

Zhao, Cheng ^{[1
,2
]}

Shen, Jiabin ^{[1
,2
]}

Xu, Shanshan ^{[3
]}

Wei, Jing ^{[4
]}

Liu, Haiquan ^{[1
,2
]}

Xie, Siqi ^{[1
,2
]}

Pan, Yingjie ^{[1
,2
]}

Zhao, Yong ^{[1
,2
]}

Zhu, Yongheng ^{[1
,2
]}

机构：

[1] Shanghai Ocean Univ, Coll Food Sci & Technol, Lab Qual & Safety Risk Assessment Aquat Prod Stor, Minist Agr, Shanghai 201306, Peoples R China

[2] Shanghai Ocean Univ, Shanghai Engn Res Ctr Aquat Prod Proc & Preservat, Shanghai 201306, Peoples R China

[3] Zhejiang Univ, Coll Chem & Biol Engn, State Key Lab Chem Engn, 38 Zheda Rd, Hangzhou 310027, Peoples R China

[4] Xi An Jiao Tong Univ, Inst Analyt Chem & Instrument Life Sci, Sch Life Sci & Technol, Key Lab Biomed Informat Engn,Minist Educ, Xian 710049, Shaanxi, Peoples R China

来源：

FOOD CHEMISTRY | 2022年 / 392卷

基金：

上海市自然科学基金;

关键词：

Au nanoparticles; WO2; nanoseets; Gas sensor; Trimethylamine detection; Seafood freshness; SENSING PROPERTIES; HOLLOW SPHERES; CATALYSTS; OXIDE; SNO2; NH3;

D O I：

10.1016/j.foodchem.2022.133318

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

Trimethylamine (TMA) is an organic amine gas used as an important index to assess the seafood freshness. In this work, an ultra-efficient trimethylamine gas sensor was constructed by ultrasonic treatment loading of Au nanoparticles (~4 nm) on WO3 nanosheets prepared by solvothermal self-assembly method. The response of the sensor to 25 ppm TMA was as high as 217.72 (Rair/Rgas) at 300 celcius. In addition, the Au/WO3 nanosheets sensor exhibited rapid response-recovery time (8 s/6 s), low detection limit (0.5 ppm), and high selective detection of TMA. Moreover, the composition of volatiles produced by decay of Larimichthys crocea (0-15 days) was examined, which proved that the detection of TMA by the Au/WO3 sensor can evaluate the freshness of Larimichthys crocea. Such a magnificent gas sensing performance reveals that the Au/WO3 sensor has remarkable application potential in rapid and non-destructive seafood freshness assessment on the spot.

引用

页数：9

共 39 条

[1] Crystallographic characterization and NO2 gas sensing property of LnFeO3 prepared by thermal decomposition of Ln-Fe hexacyanocomplexes, Ln[Fe(CN)6]•nH2O, Ln = La, Nd, Sm, Gd, and Dy [J].