Mesoporous Tungsten Oxides with Crystalline Framework for Highly Sensitive and Selective Detection of Foodborne Pathogens

• DOI: 10.1021/jacs.7b04221
• Publication Date: 2017-07-07T02:13:33Z
• Authors: Yongheng Zhu; Yong Zhao; Junhao Ma; Xiaowei Cheng; Jing Xie; Pengcheng Xu; Haiquan Liu; Hongping Liu; Haijiao Zhang; Minghong Wu; Ahmed A. Elzatahry; Abdulaziz Alghamdi; Yonghui Deng; Dongyuan Zhao
• Keywords: Surface Properties; Triethylamine; Oxides; 02 engineering and technology; Listeria monocytogenes; Tungsten; 3. Good health; Acetone; Gas Sensor; 13. Climate action; Particle Size; Crystallization; 0210 nano-technology; Porosity

Foodborne pathogens like Listeria monocytogenes can cause various illnesses and pose a serious threat to public health. They produce species-specific microbial volatile organic compounds, i.e., the biomarkers, making it possible indirectly measure contamination in foodstuff. Herein, highly ordered mesoporous tungsten oxides with high surface areas tunable pores have been synthesized used as sensing materials achieve an exceptionally sensitive selective detection of trace monocytogenes. The WO3-based chemiresistive sensors exhibit rapid response, superior sensitivity, 3-hydroxy-2-butanone. chemical mechanism study reveals that acetic acid is main product generated by catalytic reaction biomarker molecule over WO3. Furthermore, using sensors, bacteria was achieved, linear relationship broad range, specificity for Such good gas performance foresees great potential application fast effective safety food, water