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Niu Yaling,Yue Chengcai,Li Shuqi,Che Guangbo,Su Nan,Dong Hongjun,Li Chunmei 한국탄소학회 2023 Carbon Letters Vol.33 No.4
Developing the high-performance semiconductor photocatalytic materials is an eternal topic under the background of the current energy and environment requirements. In recent years, single-atom photocatalysts (SAPCs) have been brought a lot of attention in energy conversion and environmental purification because of their unique characteristics and properties, including the unique coordination patterns, outstanding atomic utilization, quantum confinement effects, high catalytic activity, etc. Hence, this critical review focuses on the summarized various synthetic methods and the recent important applications of SAPCs, including photocatalytic H2 evolution (PHE) from water splitting, photocatalytic CO2 reduction, photodegradation of organic pollutants, etc. The prospects and challenges for future research topics of SAPCs with excellent activity and stability for various photocatalytic applications are prospected at the end of this review. We sincerely expect that this critical review can promote deep-level insight into the SAPCs subject for the future significant applications in other fields.
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Liusha Cen,Tao Tang,Fan Yu,Han Wu,Chengcai Li,Hailin Zhu,Yuhai Guo 한국공업화학회 2023 Journal of Industrial and Engineering Chemistry Vol.126 No.-
Semiconductormetal–organic framework (MOF) hybrid photocatalysts become a significant material totreating dyeing wastewater recently. Zinc-based metal–organic framework (ZIF-8) stands out amongnumerous photocatalysts for its stability and simplicity to prepare. In this work, the gourd-shaped ZIF-8/TiO2 nanocomposites are prepared in situ on anatase TiO2 by precursor method, and then ZIF-8/TiO2nanocomposites is supported on PVDF electrospinning nanofibers by blending method to form ZIF-8/TiO2 nanofibers (ZIF-8/TiO2 NFs). We compare the degradation ability of Rhodamine B by ZIF-8/TiO2NFs with different mass ratios and load rates. When the mass ratio of ZIF-8 to TiO2 is 2:1 and the loadingrate is 10%, the photocatalytic degradation efficiency of ZIF-8/TiO2 NFs reached 95.4%, and the degradationremained as high as 88.7% after cycling five times. The characterization results showed that ZIF-8 andTiO2 are connected by N Ti O chemical bond, which narrows the band gap and rebars the recombinationof the electron-hole pairs. The synergistic action of ZIF-8 and TiO2 largely improves the photocatalyticcapacity of ZIF-8/TiO2 NFs.
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