Photoelectrochemical Sensor for H2S Based on a Lead-Free Perovskite/Metal-Organic Framework Composite

被引:13
作者
Mao, Mengfan [1 ]
Zu, Yexin [1 ,2 ]
Zhang, Yating [1 ,2 ]
Qiu, Yongzhen [1 ,2 ]
Lin, Yue [1 ]
Luo, Fang [1 ,2 ]
Weng, Zuquan [2 ]
Lin, Cuiying [1 ]
Qiu, Bin [1 ]
Lin, Zhenyu [1 ]
机构
[1] Fuzhou Univ, MOE Key Lab Anal & Detect Food Safety & Biol, Fujian Prov Key Lab Anal & Detect Technol Food Saf, Coll Chem, Fuzhou 350116, Fujian, Peoples R China
[2] Fuzhou Univ, Coll Biol Sci & Engn, Fuzhou 350116, Fujian, Peoples R China
基金
中国国家自然科学基金;
关键词
HYDROGEN-SULFIDE;
D O I
10.1021/acs.analchem.4c00041
中图分类号
O65 [分析化学];
学科分类号
070302 ; 081704 ;
摘要
Halide perovskites have emerged as a highly promising class of photoelectric materials. However, the application of lead-based perovskites has been hindered by their toxicity and relatively weak stability. In this work, a composite material comprising a lead-free perovskite cesium copper iodide (CsCu2I3) nanocrystal and a metal-organic framework (MOF-801) has been synthesized through an in situ growth approach. The resulting composite material, denoted as CsCu2I3/MOF-801, demonstrates outstanding stability and exceptional optoelectronic characteristics. MOF-801 may serve a dual role by acting as a protective barrier between CsCu2I3 nanocrystals and the external environment, as well as promoting the efficient transfer of photogenerated charge carriers, thereby mitigating their recombination. Consequently, CsCu2I3/MOF-801 demonstrates its utility by providing both stability and a notably high initial photocurrent. Leveraging the inherent reactivity between H2S and the composite material, which results in the formation of Cu2S and structural alteration, an exceptionally sensitive photoelectrochemical sensor for H2S detection has been designed. This sensor exhibits a linear detection range spanning from 0.005 to 100 mu M with a remarkable detection limit of 1.67 nM, rendering it highly suitable for precise quantification of H2S in rat brains. This eco-friendly sensor significantly broadens the application horizon of perovskite materials and lays a robust foundation for their future commercialization.
引用
收藏
页码:4290 / 4298
页数:9
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