One-step vapor diffusion synthesis of uniform CdS quantum dots/reduced graphene oxide composites as efficient visible-light photocatalysts
One-step vapor diffusion synthesis of uniform CdS quantum dots/reduced graphene oxide composites as efficient visible-light photocatalysts
复制标题
一步气相扩散合成均匀 CdS 量子点/还原氧化石墨烯复合材料作为高效可见光光催化剂
DOI：
10.1039/c4ra02000f
复制
发表时间：
2014-05
期刊：
影响因子：
3.9
通讯作者：
Zhao Yun
中科院分区：
文献类型：
--
作者：
Fu Min;Jiao Qingze;Zhao Yun
在乙二醇存在下，采用一步气相扩散法制备了CdS量子点/还原氧化石墨烯复合材料。同时完成了CdS量子点的原位生长和氧化石墨烯（GO）的还原。傅里叶变换红外光谱、x射线衍射图、x射线光电子能谱和拉曼能谱证实了氧化石墨烯的还原。电镜显示，在RGO薄片上均匀分布着4 ~ 7 nm大小的CdS量子点。通过测试CdS QDs/RGO复合材料和CdS的瞬态光电流响应、电化学阻抗谱和漫反射紫外可见光谱来解释RGO在光催化反应中的作用。所得复合材料在可见光照射下表现出比纯CdS更好的光催化性能。研究了不同氧化石墨烯含量对光催化性能的影响。提出了CdS QDs/RGO复合材料可能的光催化机理。
CdS quantum dots (QDs)/reduced graphene oxide (RGO) composites were synthesized through a one-step vapor diffusion process in the presence of ethylene glycol. The in situ growth of CdS QDs and the reduction of graphene oxide (GO) were completed simultaneously. Fourier transform infrared spectra, X-ray diffraction patterns, X-ray photoelectron spectroscopy and Raman spectroscopy confirmed the reduction of GO. Electron microscopy indicated uniform CdS QDs with size around 4–7 nm were well distributed on the RGO sheets. The transient photocurrent response, electrochemical impedance spectroscopy and diffuse reflectance UV-visible spectra of CdS QDs/RGO composites and CdS were tested to explain the role of RGO for the photocatalytic reaction. As-obtained composites exhibited better photocatalytic properties than pure CdS under visible light irradiation. The influence of different contents of GO on photocatalytic performance was also investigated. A possible photocatalytic mechanism of CdS QDs/RGO composites was proposed.
登录
查看更多内容
量子点敏化石墨烯：原位生长及其在光电化学电池中的应用
影响因子：
5.4
作者：
Chang, Haixin;Lv, Xiaojun;Li, Jinghong
通讯作者：
Li, Jinghong
影响因子：
--
作者：
T. Tsumura;N. Kojitani;Ikuichiro Izumi;N. Iwashita;M. Toyoda;M. Inagaki
通讯作者：
T. Tsumura;N. Kojitani;Ikuichiro Izumi;N. Iwashita;M. Toyoda;M. Inagaki
单层石墨烯片两侧分散的 SnO2 纳米颗粒作为锂离子电池负极材料
影响因子：
--
作者：
Jiang, Ling-Yan;Zhang, Le-Sheng;Wang, Wei;Guo, Yu-Guo;Yan, Hui-Juan;Wan, Li-Jun;Wang, Wei D.;Song, Wei-Guo
通讯作者：
Song, Wei-Guo
DOI：
10.1021/la051072c
发表时间：
2005-11
期刊：
Langmuir : the ACS journal of surfaces and colloids
影响因子：
--
作者：
Shiming Wang;Ping Liu;Xuxu Wang;Xianzhi Fu
通讯作者：
Shiming Wang;Ping Liu;Xuxu Wang;Xianzhi Fu
影响因子：
64.8
作者：
Stankovich, Sasha;Dikin, Dmitriy A.;Ruoff, Rodney S.
通讯作者：
Ruoff, Rodney S.