Ultrasound-assisted growth of Zn0.2Cd0.8S nanoparticles on mesoporous P-doped graphitic carbon nitride nanosheets for superior photocatalytic activities
Ultrasound-assisted growth of Zn0.2Cd0.8S nanoparticles on mesoporous P-doped graphitic carbon nitride nanosheets for superior photocatalytic activities
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DOI：
10.1016/j.jallcom.2016.08.155
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发表时间：
2017-01
影响因子：
6.2
通讯作者：
Wei Chen;Ting Huang;Tian-yu Liu;Guorong Duan;Xu-jie Yang;Xiaoheng Liu
中科院分区：
文献类型：
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作者：
Wei Chen;Ting Huang;Tian-yu Liu;Guorong Duan;Xu-jie Yang;Xiaoheng Liu
采用超声辅助生长法成功制备了高效可见光驱动的Zn 0. 2Cd 0. 8 S/P-C3 N4异质结构。所制备的Zn 0. 2Cd 0. 8 S/P-C3 N4纳米复合材料由均匀分散的Zn 0. 2Cd 0. 8 S纳米颗粒固定在介孔P-C3 N4纳米片上组成。以4-硝基苯胺（4-NA）的光还原和水的分解为光催化应用，评价了所制备样品的光催化活性。Zn 0. 2Cd 0. 8 S纳米粒子与P-C3 N4纳米片之间的紧密界面接触赋予了这些纳米复合光催化剂与纯Zn 0. 2Cd 0. 8 S纳米粒子和裸P-C3 N4纳米片（尤其是Zn 0. 2Cd 0. 8 S/P-C3 N4 -80）相比对于4-NA还原和水裂解均具有上级可见光催化活性。此外，我们还发现Zn_（0.2）Cd_（0.8）S/P-C_3 N_（4 -80）样品在光催化运行过程中对4-NA选择性还原为4-苯二胺（4-PDA）具有很好的稳定性。我们希望通过对Zn 0. 2Cd 0. 8 S/P-C3 N4纳米复合材料的制备和应用的研究，为P-C3 N4基纳米复合材料的设计、合成和应用提供新的思路。
Highly-efficient visible light driven Zn0.2Cd0.8S/P-C3N4heterostructure were successfully synthesized via ultrasound-assisted growth route. The as-prepared Zn0.2Cd0.8S/P-C3N4nanocomposites consist of mesoporous P-C3N4nanosheets immobilized with homogeneously dispersed Zn0.2Cd0.8S NPs. The photocatalytic applications including photoreduction of 4-nitroaniline (4-NA) and water splitting were employed to evaluate their photocatalytic activities of prepared samples. The intimate interfacial contact between the Zn0.2Cd0.8S nanoparticles and the P-C3N4nanosheets endows these nanocomposite photocatalysts with superior visible light photocatalytic activity for both the 4-NA reduction and water splitting in comparison with pure Zn0.2Cd0.8S NPs and bare P-C3N4NSs, especially Zn0.2Cd0.8S/P-C3N4-80. In addition, we found that Zn0.2Cd0.8S/P-C3N4-80 sample possesses excellent stability towards selective reduction of 4-NA to 4-phenylenediamine (4-PDA) during the photocatalytic running experiments. We hope that our current research on the facile fabrication and applications of Zn0.2Cd0.8S/P-C3N4samples can provide some new insights in the design, synthesis and application of P-C3N4based nanocomposites.