当前位置：
X-MOL 学术
›
ChemCatChem
›
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.)
Facile Construction of g‐C3N4 Nanosheets/TiO2 Nanotube Arrays as Z‐Scheme Photocatalyst with Enhanced Visible‐Light Performance
ChemCatChem ( IF 3.8 ) Pub Date : 2016-08-30 , DOI: 10.1002/cctc.201600828 Dantong Zhou 1 , Zhi Chen 1 , Qian Yang 1 , Cai Shen 2 , Gao Tang 1 , Shilong Zhao 1 , Jingji Zhang 1 , Da Chen 1 , Qinhua Wei 1 , Xiaoping Dong 3
ChemCatChem ( IF 3.8 ) Pub Date : 2016-08-30 , DOI: 10.1002/cctc.201600828 Dantong Zhou 1 , Zhi Chen 1 , Qian Yang 1 , Cai Shen 2 , Gao Tang 1 , Shilong Zhao 1 , Jingji Zhang 1 , Da Chen 1 , Qinhua Wei 1 , Xiaoping Dong 3
Affiliation
|
Semiconductor photocatalysis may be a promising strategy to face energy and environmental issues because it utilizes the solar energy as energy source. The artificially Z‐scheme photocatalytic system has attracted special interests owing to its high efficiency and strong redox ability. Graphitic carbon nitride nanosheets (g‐C3N4 NSs) display prominent performances, which are intensively investigated. Herein, we constructed an all‐solid‐state Z‐scheme photocatalytic system and firstly immobilized g‐C3N4 nanosheets on TiO2 nanotube arrays (TNTAs) by a simple method. The microstructures of prepared g‐C3N4 NSs/TNTAs photocatalyst were characterized by XRD, X‐ray photoelectron spectroscopy, SEM and TEM. The features of light absorption, charge separation, and charge transfer were analyzed by UV/Vis diffuse reflectance techniques, photoluminescence spectroscopy, electrochemical atomic force microscopy, and photocurrent measurement. The synthesized g‐C3N4 NSs/TNTAs samples shows enhanced photocatalytic efficiency for rhodamine B degradation under visible light, which is four times more than that of pure TNTAs. Tetracycline hydrochloride could also be effectively degraded under visible light, which contributes to reducing antibiotic residues in wastewater. Additionally, g‐C3N4 NSs/TNTAs also possess other advantages such as well long‐term stability and easily recyclable properties. A reaction mechanism is also proposed.
中文翻译：
g-C3N4纳米片/ TiO2纳米管阵列作为Z方案光催化剂的便捷构建，具有增强的可见光性能
半导体光催化可能是面对能源和环境问题的一种有前途的策略，因为它利用太阳能作为能源。人工Z方案光催化系统因其高效和强大的氧化还原能力而引起了人们的特殊兴趣。石墨碳氮化物纳米片（g-C 3 N 4 NSs）表现出突出的性能，对此进行了深入研究。本文中，我们构建了全固态Z方案光催化系统，并首先通过一种简单的方法将g-C 3 N 4纳米片固定在TiO 2纳米管阵列（TNTA）上。制备的g‐C 3 N 4的微观结构通过XRD，X射线光电子能谱，SEM和TEM对NSs / TNTAs光催化剂进行了表征。通过UV / Vis漫反射技术，光致发光光谱，电化学原子力显微镜和光电流测量来分析光吸收，电荷分离和电荷转移的特征。合成的g‐C 3 N 4 NSs / TNTAs样品在可见光下对若丹明B的降解具有增强的光催化效率，是纯TNTA的四倍。盐酸四环素也可以在可见光下有效降解，这有助于减少废水中的抗生素残留。另外，g‐C 3 N 4NSs / TNTA还具有其他优点，例如长期稳定性好和易于回收的特性。还提出了反应机理。
更新日期：2016-08-30
中文翻译：
g-C3N4纳米片/ TiO2纳米管阵列作为Z方案光催化剂的便捷构建，具有增强的可见光性能
半导体光催化可能是面对能源和环境问题的一种有前途的策略，因为它利用太阳能作为能源。人工Z方案光催化系统因其高效和强大的氧化还原能力而引起了人们的特殊兴趣。石墨碳氮化物纳米片（g-C 3 N 4 NSs）表现出突出的性能，对此进行了深入研究。本文中，我们构建了全固态Z方案光催化系统，并首先通过一种简单的方法将g-C 3 N 4纳米片固定在TiO 2纳米管阵列（TNTA）上。制备的g‐C 3 N 4的微观结构通过XRD，X射线光电子能谱，SEM和TEM对NSs / TNTAs光催化剂进行了表征。通过UV / Vis漫反射技术，光致发光光谱，电化学原子力显微镜和光电流测量来分析光吸收，电荷分离和电荷转移的特征。合成的g‐C 3 N 4 NSs / TNTAs样品在可见光下对若丹明B的降解具有增强的光催化效率，是纯TNTA的四倍。盐酸四环素也可以在可见光下有效降解，这有助于减少废水中的抗生素残留。另外，g‐C 3 N 4NSs / TNTA还具有其他优点，例如长期稳定性好和易于回收的特性。还提出了反应机理。
京公网安备 11010802027423号