Cyano-bridged Schottky junction of CN-TiC for enhanced photocatalytic H2 evolution and tetracycline degradation
Cyano-bridged Schottky junction of CN-TiC for enhanced photocatalytic H2 evolution and tetracycline degradation
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CN-TiC 的氰基桥肖特基结可增强光催化析氢和四环素降解
DOI:
10.1016/j.apsusc.2022.152515
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发表时间:
2022-01
影响因子:
6.7
通讯作者:
Xiaogang Xue
中科院分区:
文献类型:
--
作者:
Xin Yuan;Yuxin Zhang;Yuting Zhang;Ping Peng;Changlai Yuan;Ping Cai;Xiaowen Zhang;Songwei Wang;Huabing Li;Xiaogang Xue
The electron collection and accumulation at carbon nitride (CN) surfaces play critical roles in coupling multielectron processes with carriers' dynamics for boosting tetracycline (TC) degradation, where MXenes are excellent candidates for tailoring carriers' dynamics in CN. Cyano-intermediated heterojunctions between CN and titanium carbide (CN-TiC) were synthesized via TiC-assisted thermopolymerization. Mesoporous morphology and combination of two materials were confirmed. Investigations on optical properties indicate that cyano groups were formed via this TiC-assisted polymerization, leading to strong chemical-physical interaction for intimate hetero-contact and enhanced visible absorption. As results, the optimized CN-TiC shows improved TC degradation rate (k = 0.05292 min−1), 3.5 times higher that of CN (k = 0.0153 min−1) or 176 times that of TiC (0.0003 min−1). Kinetics investigations reveal that superoxide radicals (.O2–) dominate TC oxidation, where TiC facilitates electrons' transportation/collection. Further photochemical investigations and band analysis suggest that the formation of Schottky junction between CN and TiC promotes electron-hole separation/transportation and electrons' accumulation for boosting TC degradation. We expanded this design to photocatalytic H2evolution (PHE) or rhodamine degradation, achieving the PHE rate of 1941 μmol·g−1·h−1or rhodamine removal ratio of 96%, far higher than that of CN.
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影响因子:
6.2
作者:
Xiaoyan Huang;Xiuyun Zhang;Kexiang Zhang;Xiaogang Xue;Jian Xiong;Yu Huang;Doudou Zhang;Jian Zhang;Zheling Zhang;Fengpo Yan
通讯作者:
Fengpo Yan
DOI:
10.1016/j.apcatb.2020.118602
发表时间:
2020-06
期刊:
Applied Catalysis B: Environmental
影响因子:
--
作者:
Xiong Jie;Li Xibao;Huang Juntong;Gao Xiaoming;Chen Zhi;Liu Jiyou;Li Hai;Kang Bangbang;Yao Wenqing;Zhu Yongfa
通讯作者:
Zhu Yongfa
影响因子:
9.9
作者:
Yun-Nan Gong;Bi-Zhu Shao;Jian-Hua Mei;Wei Yang;Di-Chang Zhong;Tong-Bu Lu
通讯作者:
Tong-Bu Lu
DOI:
10.1016/j.apcatb.2019.118179
发表时间:
2020
期刊:
Applied Catalysis B: Environmental
影响因子:
--
作者:
Yuan Yong-Jun;Shen Zhi-Kai;Wang Pei;Li Zijian;Pei Lang;Zhong Jiasong;Ji Zhenguo;Yu Zhen-Tao;Zou Zhigang
通讯作者:
Zou Zhigang
影响因子:
22.1
作者:
Li, Bolun;Song, Haiyan;Wei, Lishan
通讯作者:
Wei, Lishan