Novel reduced graphene oxide-supported Cd0.5Zn0.5S/g-C3N4 Z-scheme heterojunction photocatalyst for enhanced hydrogen evolution
Novel reduced graphene oxide-supported Cd0.5Zn0.5S/g-C3N4 Z-scheme heterojunction photocatalyst for enhanced hydrogen evolution
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新型还原氧化石墨烯负载的 Cd0.5Zn0.5S/g-C3N4 Z 型异质结光催化剂，用于增强析氢
DOI：
10.1016/j.apsusc.2018.04.048
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发表时间：
2018-07
影响因子：
6.7
通讯作者：
Fan Jun
中科院分区：
文献类型：
--
作者：
Xue Wenhua;Hu Xiaoyun;Liu Enzhou;Fan Jun
采用两步法成功制备了一种新型的还原氧化石墨烯（RGO）负载的Cd 0. 5 Zn 0. 5S/g-C3 N4 Z异质结，用于增强光催化制氢. RGO负载的Cd0.5Zn0.5S/g-C3 N4 -40%复合物在没有贵金属助催化剂的情况下光催化分解水的速率可达39.24 mmol·g-1·h-1（λ = 420 nm，QE = 37.88%），分别是纯Cd0.5Zn0.5S和g-C3 N4的8.1倍和48.4倍。RGO作为Cd 0. 5 Zn 0. 5S纳米球和g-C3 N4纳米片的介体，在三元体系中起着决定性的作用，从而提高了Cd 0. 5 Zn 0. 5S纳米球和g-C3 N4纳米片的光催化析氢性能。光致发光光谱和瞬态光电流曲线表明，由于Z型异质结的存在，光生载流子的分离效率显著提高，这一点通过羟基自由基实验得到了证实。此外，还研究了RGO负载Cd_（0.5）Zn_（0.5）S/g-C_3 N_4 -40%的光稳定性。
A novel reduced graphene oxide (RGO)-supported Cd0.5Zn0.5S/g-C3N4Z-scheme heterojunctions has been successfully fabricated via a two-step method for enhanced photocatalytic hydrogen generation. The photocatalytic water splitting rate of the RGO-supported Cd0.5Zn0.5S/g-C3N4-40% composite can reach 39.24 mmol∙g−1∙h−1(λ = 420 nm, QE = 37.88%) without noble metal co-catalyst, which is 8.1 and 48.4 times with respect to pure Cd0.5Zn0.5S and g-C3N4. The enhanced photocatalytic hydrogen evolution performance can be ascribed to the synergistic effect between Cd0.5Zn0.5S nanospheres and g-C3N4nanosheets in the existence of RGO, which plays a decisive role in the ternary system by acting as a mediator of carriers between the two semiconductors. Photoluminescence spectroscopy and transient photocurrent curves demonstrate that the separation efficiency of photo-generated carriers is significantly improved because of the Z-scheme heterojunction, which is demonstrated by the hydroxyl radical experiment. Besides, the photo-stability of the RGO-supported Cd0.5Zn0.5S/g-C3N4-40% was also investigated.
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影响因子：
4
作者：
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通讯作者：
R. C. Pawar;V. Khare;C. S. Lee
影响因子：
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影响因子：
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作者：
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影响因子：
7.3
作者：
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通讯作者：
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通过ZnS微球和RGO的协同相互作用诱导多步电荷转移增强g-C3N4纳米片光催化作用
影响因子：
22.1
作者：
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通讯作者：
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