Synergistic effect of quantum confinement and site-selective doping in polymeric carbon nitride towards overall water splitting
Synergistic effect of quantum confinement and site-selective doping in polymeric carbon nitride towards overall water splitting
复制标题
聚合氮化碳中量子限制和位点选择性掺杂对整体水分解的协同效应
DOI:
10.1016/j.apcatb.2019.118211
复制
发表时间:
2020-02
期刊:
影响因子:
--
通讯作者:
Guo Liejin
中科院分区:
文献类型:
--
作者:
Qin Zhixiao;Huang Zhenxiong;Wang Menglong;Liu Dongyu;Chen Yubin;Guo Liejin
Photocatalytic overall water splitting is a challenging topic in the research field of solar energy conversion. Herein, we proposed an effective strategy of adopting quantum confinement effect and site-selective doping to realize simultaneous hydrogen and oxygen production from pure water over polymeric carbon nitride (CN) photocatalysts. Selectively doping P atoms in the corner-carbon sites provided efficient charge transfer channels between different structural units. Meanwhile, the site-selective P doping could generate mid-gap states below the conduction band of CN, which extended the utilization of visible light up to 600 nm, and served as trapping centres to inhibit the charge recombination. In addition, the quantum confinement effect could ensure the sufficient driving force for the rate-determining water oxidation. As a consequence, the hydrogen production rate from overall water splitting reached 619.5 μmol·h−1g−1under simulated sunlight irradiation, with notable apparent quantum yields of 6.8% at 400 nm and 2.4% at 500 nm.
登录
查看更多内容
影响因子:
22.1
作者:
Qin Zhixiao;Xue Fei;Chen Yubin;Shen Shaohua;Guo Liejin
通讯作者:
Guo Liejin
影响因子:
2.8
作者:
王心晨
通讯作者:
王心晨
影响因子:
--
作者:
Yang Zhao;Fei Zhao;Xiaopeng Wang;Chenyu Xu;Zhipan Zhang;G. Shi;L. Qu
通讯作者:
Yang Zhao;Fei Zhao;Xiaopeng Wang;Chenyu Xu;Zhipan Zhang;G. Shi;L. Qu
影响因子:
3.7
作者:
Ma, Xinguo;Lv, Yanhui;Zhu, Yongfa
通讯作者:
Zhu, Yongfa
影响因子:
19
作者:
Liang, Qinghua;Li, Zhi;Yang, Quan-Hong
通讯作者:
Yang, Quan-Hong