期刊
SENSORS AND ACTUATORS B-CHEMICAL
卷 289, 期 -, 页码 131-137出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.snb.2019.03.052
关键词
Ti3C2 quantum dots; Photoelectrochemical; Inverse opal photonic crystals; Glutathione
资金
- Jilin Province Science Fund for Excellent Young Scholars [20170520111JH, 20170520129JH]
- National Natural Science Foundation of China [11874181, 61874049, 61775080, 11674126, 11674127, 61674067]
- Special Project of the Province-University Co-constructing Program of Jilin Province [SXGJXX2017-3]
- Jilin Province Natural Science Foundation of China [20180101210JC, 20170101170JC, 20160418055FG]
- National Key Research and Development Program [2016YFC0207101]
Due to the ultrathin structure, functional groups and excellent physical-chemical properties, Two-dimensional (2D) MXenes shows great potential for biomedical applications. Here, we prepared TiO2 inverse opal photonic crystals (IOPCs)/Ti3C2 quantum dots (QDs) composite film through the self-assembly method. Because of the widen absorption band of Ti3C2 QDs, TiO2 IOPCs/Ti3C2 composite film could have photocurrent effect from 280 to 900 nm, and the internal power conversion efficiency could reach to 26% at 350 nm. Owing to favourable energy levels, Ti3C2 QDs were formed the Type-II Heterojunction with TiO2, thus enabling directional transport charge for efficient charge separation. The Type-II Heterojunction photoelectrochemical (PEC) sensor consisting of TiO2/Ti3C2/Nafion electrode exhibited high stability, sensitivity, and selectivity for the detection of glutathione in buffered solution and cell extracts. Thus, the TiO2/Ti3C2/Nafion composite film provides a promising green electrode for sensitive PEC detection, which could realize some potential applications for disease early precaution and diagnose.
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