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J Am Chem Soc

Title:		Mesoporous Tungsten Oxides with Crystalline Framework for Highly Sensitive and Selective Detection of Foodborne Pathogens
Author(s):		Zhu Y; Zhao Y; Ma J; Cheng X; Xie J; Xu P; Liu H; Liu H; Zhang H; Wu M; Elzatahry AA; Alghamdi A; Deng Y; Zhao D;
Address:		"Department of Chemistry, State Key Laboratory of Molecular Engineering of Polymers, Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, and iChEM, Fudan University , Shanghai 200433, China. College of Food Science and Technology, and Laboratory of Quality & Safety Risk Assessment for Aquatic Products on Storage and Preservation (Shanghai), Ministry of Agriculture, Shanghai Ocean University , Shanghai 201306, China. State Key Laboratory of Transducer Technology, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences , Shanghai 200050, China. Institute of Nanochemistry and Nanobiology, School of Environmental and Chemical Engineering, Shanghai University , Shanghai 200444, China. Materials Science and Technology Program, College of Arts and Sciences, Qatar University , PO Box 2713, Doha, Qatar. Department of Chemistry, College of Science, King Saud University , Riyadh 11451, Saudi Arabia"
Journal Title:		J Am Chem Soc
Year:		2017
Volume:		20170718
Issue:		30
Page Number:		10365 - 10373
DOI:		10.1021/jacs.7b04221
ISSN/ISBN:		1520-5126 (Electronic) 0002-7863 (Linking)
Abstract:		"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 to indirectly measure microbial contamination in foodstuff. Herein, highly ordered mesoporous tungsten oxides with high surface areas and tunable pores have been synthesized and used as sensing materials to achieve an exceptionally sensitive and selective detection of trace Listeria monocytogenes. The mesoporous WO(3)-based chemiresistive sensors exhibit a rapid response, superior sensitivity, and highly selective detection of 3-hydroxy-2-butanone. The chemical mechanism study reveals that acetic acid is the main product generated by the surface catalytic reaction of the biomarker molecule over mesoporous WO(3). Furthermore, by using the mesoporous WO(3)-based sensors, a rapid bacteria detection was achieved, with a high sensitivity, a linear relationship in a broad range, and a high specificity for Listeria monocytogenes. Such a good gas sensing performance foresees the great potential application of mesoporous WO(3)-based sensors for fast and effective detection of microbial contamination for the safety of food, water safety and public health"
Keywords:		Crystallization Listeria monocytogenes/*isolation & purification Oxides/chemical synthesis/*chemistry Particle Size Porosity Surface Properties Tungsten/*chemistry;
Notes:		"MedlineZhu, Yongheng Zhao, Yong Ma, Junhao Cheng, Xiaowei Xie, Jing Xu, Pengcheng Liu, Haiquan Liu, Hongping Zhang, Haijiao Wu, Minghong Elzatahry, Ahmed A Alghamdi, Abdulaziz Deng, Yonghui Zhao, Dongyuan eng Research Support, Non-U.S. Gov't 2017/07/08 J Am Chem Soc. 2017 Aug 2; 139(30):10365-10373. doi: 10.1021/jacs.7b04221. Epub 2017 Jul 18"