Design to enhance sensing performance of ZIF-8 crystals

• Published in: Progress in natural science Vol. 34; no. 2; pp. 240 - 250
• Main Authors: Li, Ya-Ru, Dong, Xiuxiu, Pan, Shu-Yi, Luo, Lin, Lei, Hong-Tao, Xu, Zhen-Lin
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 01.04.2024; Guangdong Provincial Key Laboratory of Food Quality and Safety,College of Food Science,South China Agricultural University,Guangzhou,510642,China%Key Laboratory of Modern Agricultural Equipment and Technology(Jiangsu University),Ministry of Education,School of Agricultural Engineering,Jiangsu University,Zhenjiang,212013,China
• Subjects: Formation mechanism; Regulation; Sensing performance; Synthesis method; ZIF-8; Synthesis method; Sensing performance; Regulation; ZIF-8; Formation mechanism
• ISSN: 1002-0071
• DOI: 10.1016/j.pnsc.2024.02.011

Metal-organic frameworks (MOFs) are a large class of crystalline porous materials that composed of organic ligands and metal ions, of which zeolitic imidazolate frameworks (ZIFs) are a broad classification. The most well-known ZIF-like material is ZIF-8 crystals, which have been the subject of extensive research for decades. ZIF-8 crystals have been synthesized under various conditions for application in the fields of sensing, drug delivery, and catalysis. This paper provides a brief introduction to the preparation methods, formation processes, and formation mechanisms of ZIF-8 crystals in different media, and then explains the effects of different precursor conditions (type of Zn2+, ratio of raw materials, and type of solvent) on ZIF-8 crystals in terms of formation mechanisms. Subsequently, current reports on the application of ZIF-8-based chemiresistive gas sensors, electrochemical, fluorescent and colorimetric sensors are also summarized. Hopefully, ZIF-8 crystals with good catalytic properties will be obtained based on rational design for promoting the application in different fields of the sensors.