当前位置：
X-MOL 学术
›
J. Phys. Chem. C
›
论文详情
Our official English website, www.x-mol.net, welcomes your
feedback! (Note: you will need to create a separate account there.)
Novel Mixed-Dimensional Photocatalysts Based on 3D Graphene Aerogel Embedded with TiO2/MoS2 Hybrid
The Journal of Physical Chemistry C ( IF 3.3 ) Pub Date : 2019-04-24 , DOI: 10.1021/acs.jpcc.9b00466 Hui Qiao 1 , Zongyu Huang 1 , Shengqian Liu 1 , Yue Tao 1 , Hu Zhou 2 , Mengyu Li 1 , Xiang Qi 1
The Journal of Physical Chemistry C ( IF 3.3 ) Pub Date : 2019-04-24 , DOI: 10.1021/acs.jpcc.9b00466 Hui Qiao 1 , Zongyu Huang 1 , Shengqian Liu 1 , Yue Tao 1 , Hu Zhou 2 , Mengyu Li 1 , Xiang Qi 1
Affiliation
|
The ternary mixed-dimensional TiO2/MoS2/graphene-aerogel, zero-dimensional TiO2 nanoparticles loaded on two-dimensional MoS2 nanosheets, and TiO2/MoS2 hybrid embedded into the three-dimensional (3D) graphene aerogel, was successfully prepared by self-assembly hydrothermal reduction process. The macroscopic appearance of TiO2/MoS2/graphene-aerogel is recorded using a digital camera. The microstructure of the TiO2/MoS2/graphene-aerogel with three-dimensional interconnected porous network structure was characterized by scanning electron microscope and transmission electron microscope. UV–vis absorption spectra tests show that TiO2/MoS2/graphene-aerogel possesses enhanced light absorption properties. The photocatalytic performance of TiO2/MoS2/graphene-aerogel was tested by the photoelectrochemical system, and it is verified that the photocurrent density of the as-prepared TiO2/MoS2/graphene-aerogel is greatly improved to 105 μA/cm2 at a voltage of 0.6 V, which is approximately 10 times than of sole TiO2. The improved photocatalytic activity is due to the enormous specific surface area caused by the multiaperture structure of the unique 3D graphene aerogel, maximized reactive sites, good conductivity, and positive coupling effect with TiO2/MoS2 heterojunction. This study indicates that TiO2/MoS2/graphene-aerogel based photocatalysts have excellent potential for photocatalytic H2 production and photocatalytic degradation.
中文翻译：
基于TiO 2 / MoS 2杂化物的3D石墨烯气凝胶的新型混合尺寸光催化剂。
三元混合尺寸的TiO 2 / MoS 2 /石墨烯气凝胶，零维的TiO 2纳米颗粒负载在二维MoS 2纳米片上，以及嵌入到三维（3D）石墨烯气凝胶中的TiO 2 / MoS 2杂化物。通过自组装水热还原法成功制备。使用数码相机记录TiO 2 / MoS 2 /石墨烯-气凝胶的宏观外观。TiO 2 / MoS 2的微观结构通过扫描电子显微镜和透射电子显微镜对具有三维互连多孔网络结构的β-石墨烯-气凝胶进行了表征。紫外可见吸收光谱测试表明，TiO 2 / MoS 2 /石墨烯气凝胶具有增强的光吸收性能。通过光电化学系统对TiO 2 / MoS 2 /石墨烯气凝胶的光催化性能进行了测试，验证了所制备的TiO 2 / MoS 2 /石墨烯气凝胶的光电流密度大大提高至105μA/ cm。2在0.6 V的电压下，约为唯一的TiO 2的10倍。改善的光催化活性归因于独特的3D石墨烯气凝胶的多孔径结构，最大的反应位点，良好的电导率以及与TiO 2 / MoS 2异质结的正耦合效应，从而产生了巨大的比表面积。这项研究表明，基于TiO 2 / MoS 2 /石墨烯-气凝胶的光催化剂具有光催化H 2产生和光催化降解的优异潜力。
更新日期：2019-04-24
中文翻译：
基于TiO 2 / MoS 2杂化物的3D石墨烯气凝胶的新型混合尺寸光催化剂。
三元混合尺寸的TiO 2 / MoS 2 /石墨烯气凝胶，零维的TiO 2纳米颗粒负载在二维MoS 2纳米片上，以及嵌入到三维（3D）石墨烯气凝胶中的TiO 2 / MoS 2杂化物。通过自组装水热还原法成功制备。使用数码相机记录TiO 2 / MoS 2 /石墨烯-气凝胶的宏观外观。TiO 2 / MoS 2的微观结构通过扫描电子显微镜和透射电子显微镜对具有三维互连多孔网络结构的β-石墨烯-气凝胶进行了表征。紫外可见吸收光谱测试表明，TiO 2 / MoS 2 /石墨烯气凝胶具有增强的光吸收性能。通过光电化学系统对TiO 2 / MoS 2 /石墨烯气凝胶的光催化性能进行了测试，验证了所制备的TiO 2 / MoS 2 /石墨烯气凝胶的光电流密度大大提高至105μA/ cm。2在0.6 V的电压下，约为唯一的TiO 2的10倍。改善的光催化活性归因于独特的3D石墨烯气凝胶的多孔径结构，最大的反应位点，良好的电导率以及与TiO 2 / MoS 2异质结的正耦合效应，从而产生了巨大的比表面积。这项研究表明，基于TiO 2 / MoS 2 /石墨烯-气凝胶的光催化剂具有光催化H 2产生和光催化降解的优异潜力。
京公网安备 11010802027423号