APPLIED SURFACE SCIENCE
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2019
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IF 5.155
Taiping Hu,Kai Dai,Jinfeng Zhang,Guangping Zhu,Changhao Liang
Inorganic-organic hybrid materials, a class of probable candidates for combining two counterparts into one structure could be beneficial for improving or combing the excellent electronic, magnetic, rigidity and thermal stability, and optical feathers of inorganic frameworks with diverse structure, processability, flexibility and good geometric controllability of organic molecules. Anchoring inorganic-organic hybrid materials with cocatalysts is a usually used strategy for enhancing their catalytic performance. However, noble metal cocatalysts always limit their practical application. Herein, we report that noble metal free cocatalyst of Ni 2 P decorated CdS-diethylenetriamine (CdS-DETA) can effectively overcome this limitation to achieve highly photocatalytic hydrogen production . The rapid microwave solvothermal synthesis of CdS-DETA (MCdS-DETA) process shortens reaction time, saves energy and lead to achieve highly photocatalytic activity due to its low crystallinity . When Ni 2 P decorated MCdS-DETA, The 0.4%Ni 2 P/MCdS-DETA exhibited the highest photocatalytic hydrogen evolution activity (6836 μmmol h −1 g −1 ), which is 4.14 times, 2.06 times and 1.34 times higher than traditional solvothermal CdS-DETA(TCdS-DETA), MCdS-DETA and Pt cocatalysted MCdS-DETA, respectively. The method reported here can be extended to other inorganic-organic hybrid materials, and develops new strategies for exploring inorganic-organic hybrid-based photocatalysts .
研究领域:
材料科学
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能源化学
✓ 已验证
产品关联
DOI
高影响因子
Small
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2024
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IF 13
Yongzhuo Yu,Wei Li,Yuxin Huang,Huixing Yang,Chaoyu Lv,Hui xiang Yan,Di Lin,Shichao Jiao,Linlin Hou,Zhiliang Wu
Inspired by energy conversion and waste reuse, hybridized Ni-MOF derivative-CdS-DETA/g-C 3 N 5 , a type-II heterojunction photocatalyst, is synthesized by a hydrothermal method for simultaneous and highly efficient photocatalytic degradation and hydrogen evolution in dye wastewater. Without the addition of cocatalysts and sacrificial agents, the optimal MOF-CD(2)/CN5 (i.e. Ni-MOF derivative-CdS-DETA (20 wt.%)/g-C 3 N 5 ) exhibit good bifunctional catalytic activity, with a H 2 evolution rate of 2974.4 µmol g −1 h −1 during the degradation of rhodamine B (RhB), and a removal rate of 99.97% for RhB. In the process of H 2 -evolution-only, triethanolamine is used as a sacrificial agent, exhibiting a high H 2 evolution rate (19663.1 µmol g −1 h −1 ) in the absence of a cocatalyst, and outperforming most similar related materials (such as MOF/g-C 3 N 5 , MOF-CdS, CdS/g-C 3 N 5 ). With the help of type-II heterojunction, holes are scavenged for the oxidative degradation of RhB, and electrons are used in the decomposition of water for H 2 evolution during illumination. This work opens a new path for photocatalysts with dual functions of simultaneous efficient degradation and hydrogen evolution.
研究领域:
材料科学
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环境科学
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化学
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产品关联
DOI
PubMed
高影响因子
APPLIED SURFACE SCIENCE
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2018
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IF 4.439
Taiping Hu,Pengfei Li,Jinfeng Zhang,Changhao Liang,Kai Dai
Cadmium sulfide (CdS) has demonstrated great promise in artificial photocataytic hydrogen (H 2 ) production. However, the serious photocorrosion hinders its effective interaction and real-life application. In this work, a typical direct Z-scheme WO 3 /CdS-diethylenetriamine (CdS-DETA) composite has been designed via facile in-situ solvothermal method, which exhibits excellent H 2 production properties in visible light region. In this system, the inorganic–organic CdS-DETA nanobelts (NBs) possess enough active sites and large surface area for the encouraging nanojunction structure information. Furthermore, we also systematically calculated energy band structure and investigated charge transfer of the WO 3 /CdS-DETA by PL and photocurrent test, the results demonstrated that the suitable band gap matching between CdS-DETA and WO 3 and high redox potential improve the separation of photogenerated holes and electrons, restraining intrinsic photocorrosion of CdS as well as improving the photocatalytic activity. 5%WO 3 /CdS-DETA presented the most outstanding H 2 evolution rate (15522 μmol g −1 h −1 ), which is twice higher than that of pure CdS-DETA. WO 3 /CdS-DETA composites also presented high stability after three recycle H 2 production experiment. Finally, direct Z-scheme photocatalytic mechanism is calculated.
研究领域:
材料科学
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能源化学
✓ 已验证
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
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2022
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IF 9.136
Huixing Yang,Wei Li,Yangyang Jiang,Qiuming Wei,Linlin Hou,Zhiliang Wu,Qinyu He,Yinzhen Wang,Dingyuan Tang
The proper design of photocatalysts is essential to improving photocatalytic decomposition of water and degradation of pollutants. In this work, we used nitrogen-rich carbon nitride with high electronic properties combined with CdS-DETA to generate CdS-DETA@g-C 3 N 5 composite, and diethylenetriamine (DETA) was used to enhance the band bending to enable the excellent photocatalytic performance of the photocatalyst. The hydrogen evolution rate (14.23 mmol/(g·h)) of the CdS-DETA@g-C 3 N 5 composite is 7.1, 7.5, and 4.5 times higher than that of g-C 3 N 5 (2.03 mmol/(g·h)), 20CSCN5 (1.89 mmol/(g·h)), and CdS-DETA (3.17 mmol/(g·h)), and the OFLX degradation rate (95.6 %) is 3.4 and 1.5 times higher than that of g-C 3 N 5 and CdS-DETA, respectively. These performance enhancements result from the enhancement of energy band bending, the construction of a built-in electric field (IEF), and the retention of high redox carriers. This work provides new insights into the design of nitrogen-rich carbon nitride-based photocatalyst for efficient photocatalytic degradation and hydrogen precipitation activity.
研究领域:
材料科学
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环境科学
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化学工程
✓ 已验证
产品关联
DOI
高影响因子
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