Chemically modified mesoporous wood: a versatile sensor for visual colorimetric detection of trinitrotoluene in water, air, and soil by smartphone camera

Zhang, Yu1; Cai, Yanhua2; Dong, Faqin3; Bian, Liang3; Li, Hua4; Wang, Jinhu1; Du, Jiayan1; Qi, Xiufang1; He, Yi1

2019

10.1007/s00216-019-02172-8

Analytical and Bioanalytical Chemistry   影响因子和分区

16182650

1618-2650

There is great interest in detection of the level of 2,4,6-trinitrotoluene (TNT) explosive due to its importance in public security and environmental protection fields. The conventional chemical sensors do not simultaneously realize simple, rapid, sensitive, selective, and direct detection of TNT in different medium without sample pretreatment. Here we present a modified wood-based chemical sensor for visual colorimetric detection of TNT in water, air, and soil. The natural wood undergoes a delignified process, which is further functionalized by 3-aminopropyltriethoxysilane (APTES). When TNT solutions are introduced, the wood-based sensor shows a colorimetric transition from light yellow to brown for naked-eye readout because of the generation of Meisenheimer complex between APTES and TNT. The photographs are collected by smartphone camera, and the RGB components are extracted to calculate the adjusted intensity for qualitative detection of TNT. This visual colorimetric sensor for TNT solution displays a linearity in the range of 0.01–5 mM with a limit of detection of 3 μM. In addition, by taking advantage of its inherent mesostructure, the wood-based sensor can be employed for visual detection of TNT vapor as well. Furthermore, it is also able to directly detect TNT in wet soil samples based on capillary action, in which TNT carried by water transports upward along the wood microchannel, triggering the generation of Meisenheimer complex. [Figure not available: see fulltext.]
© 2019, Springer-Verlag GmbH Germany, part of Springer Nature.

Wood Trinitrotoluene Visualization Colorimetry Smartphone

SCI ; EI

英语

其他

Natural Science Foundation Project of Chongqing, Chongqing Science and Technology Commission[cstc2015jcyjBX0123] ; Sichuan Province Science and Technology Support Program[2018JY0462] ; Southwest University of Science and Technology[18LZX204] ; Foundation of President of China Academy of Engineering Physics[18zh005603] ; [CEK1701] ; National Natural Science Foundation of China[41831285]

Biochemistry & Molecular Biology ; Chemistry

Biochemical Research Methods ; Chemistry, Analytical

WOS:000509532000014

Springer

20194807758652

Cameras ; Chemical sensors ; Color ; Colorimetry ; Flow visualization ; Smartphones ; Soils ; Wood

Soils and Soil Mechanics:483.1 ; Fluid Flow, General:631.1 ; Telephone Systems and Equipment:718.1 ; Light/Optics:741.1 ; Photographic Equipment:742.2 ; Chemistry:801 ; Wood and Wood Products:811.2 ; Optical Variables Measurements:941.4

CHEMISTRY

Web of Science

1.State Key Laboratory of Environment-friendly Energy Materials, Sichuan Co-Innovation Center for New Energetic Materials, Southwest University of Science and Technology, Mianyang; 621010, China
2.Chongqing Key Laboratory of Environmental Materials and Remediation Technology, Chongqing University of Arts and Sciences, Yongchuan, Chongqing; 402160, China
3.Key Laboratory of Solid Waste Treatment and Resource Recycle, Ministry of Education, State Key Laboratory Cultivation Base for Nonmetal Composites and Functional Materials, Southwest University of Science and Technology, Mianyang; Sichuan; 621010, China
4.Materials Characterization & Preparation Center, Southern University of Science and Technology, Shenzhen; 518055, China

Zhang, Yu,Cai, Yanhua,Dong, Faqin,et al. Chemically modified mesoporous wood: a versatile sensor for visual colorimetric detection of trinitrotoluene in water, air, and soil by smartphone camera[J]. Analytical and Bioanalytical Chemistry,2019,411(30):8063-8071.

Zhang, Yu.,Cai, Yanhua.,Dong, Faqin.,Bian, Liang.,Li, Hua.,...&He, Yi.(2019).Chemically modified mesoporous wood: a versatile sensor for visual colorimetric detection of trinitrotoluene in water, air, and soil by smartphone camera.Analytical and Bioanalytical Chemistry,411(30),8063-8071.

Zhang, Yu,et al."Chemically modified mesoporous wood: a versatile sensor for visual colorimetric detection of trinitrotoluene in water, air, and soil by smartphone camera".Analytical and Bioanalytical Chemistry 411.30(2019):8063-8071.