NEW JOURNAL OF CHEMISTRY
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2018
·Vol. 42
·期 19
·15974-15984
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IF 3.201
Wenqian Fan,Zhi Zhu,Yang Yu,Zhi Liu,Chunxiang Li,Pengwei Huo,Yue Qiu,Yongsheng Yan
In the present work, the ternary hybrid photocatalyst Fe3O4@g-C3N4/RGO is developed by a facile hydrothermal method, which shows a satisfactory degradation rate (90%) and stability in degrading tetracycline. The improvement in the photocatalytic activity of the ternary hybrid photocatalyst is attributed to the Fe3O4 nanobelt and RGO. As a center of oxidation–reduction, the Fe3O4 nanobelt can utilize electrons effectively. RGO with good conductivity is an outstanding electron transporter, which inhibits the recombination of electron–hole pairs. Moreover, the results of the ESR and the radical capture experiment prove that h+ and ˙O2− are the major active species in the tetracycline removal process. At the same time, the degradation intermediates of tetracycline and the photocatalytic mechanism is discussed in this paper in depth. The novel design concept is expected to be used in practical applications.
研究领域:
环境科学
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材料科学
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产品关联
DOI
高影响因子
RSC Advances
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2016
·Vol. 6
·期 115
·114374-114382
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IF 3.289
Zihong Pan,Wei Ma,Li Wang
Here, we successfully designed and prepared the magnetic recyclable Z-scheme photocatalyst WO3/Fe3O4/g-C3N4 for the first time. The structures, morphology and photocatalytic properties of as-prepared photocatalysts were characterized by a series of modern characterization methods. According to the photoluminescence, transient fluorescence, transient photocurrent and electrochemical impedance spectra, the introduction of Fe3O4, with its high conductivity, into WO3/Fe3O4/g-C3N4 enhanced the lifetime of photogenerated holes and electrons based on the Z-scheme charge carrier transfer mechanism. More importantly, WO3/Fe3O4/g-C3N4 showed good recyclability without loss of apparent photocatalytic activity even after five cycles. Therefore, this kind of material may be a promising candidate for applications in the fields of environmental protection and sewage treatment.
研究领域:
环境科学
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材料科学
✓ 已验证
产品关联
DOI
高影响因子
APPLIED CATALYSIS B-ENVIRONMENTAL
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2015
·
IF 7.435
Zhi Zhu,Ziyang Lu,Dandan Wang,Xu Tang,Yongsheng Yan,Weidong Shi,Youshan Wang,Nailing Gao,Xin Yao,Hongjun Dong
A high-dispersed Ag/Fe 3 O 4 /g-C 3 N 4 composite photocatalyst is firstly synthesized by means of the selective photo-deposition technique. It exhibits the obvious improvement of photocatalytic activity and stability for degrading tetracycline besides retaining the recycled magnetic property. The enhanced photocatalytic activity originates from synergetic effect of Ag, Fe 3 O 4 and g-C 3 N 4 that improves light absorption capacity and separation efficiency of charge carriers. This work provides a promising approach to develop visible-light-response and recycled photocatalysts applied to antibiotic wastewater treatment .
研究领域:
环境科学
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材料科学
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光催化技术
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产品关联
DOI
高影响因子
JOURNAL OF CATALYSIS
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2018
·
IF 6.759
Zenan Hu,Junjie Zhou,Yongjian Ai,Lei Liu,Li Qi,Ruihang Jiang,Hongjie Bao,Jingting Wang,Jianshe Hu,Hong-bin Sun,Qionglin Liang
A magnetically separable 2D Rh/Fe 3 O 4 /g-C 3 N 4 -N catalyst has been synthesized for the catalytic transfer hydrogenation of nitroarenes to afford corresponding anilines. The highly dispersed Rh nanoparticles are the dominant active species. The reaction is second order for rhodium according to the kinetic study, and this means the activity of different Rh-containing catalyst can be precisely predicted and the active site contains two adjoining rhodium atoms. The strong interaction between Rh and Fe 3 O 4 contributes to the catalytic performance, therefore the obtained Rh/Fe 3 O 4 /g-C 3 N 4 -N catalyst exhibits excellent catalytic activity and chemoselectivity for the reduction of various nitroaromatics, and the turnover frequencies (TOF) can reach as high as 12,666 h −1 for 4-nitrophenol. Moreover, this catalytic system is environmentally friendly because of its green solvent water and harmless byproducts (H 2 O and N 2 ), and the catalyst shows outstanding stability and recyclability with at least 12 cycles.
研究领域:
化学
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材料科学
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环境科学
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产品关联
DOI
高影响因子
RSC Advances
·
2015
·Vol. 5
·期 51
·40726-40736
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IF 3.84
Zhi Zhu,Ziyang Lu,Xiaoxu Zhao,Yongsheng Yan,Weidong Shi,Dandan Wang,Lili Yang,Xue Lin,Zhoufa Hua,Yang Liu
In the present work, based on Fe3O4/g-C3N4 as the support, 2-mercaptobenzothiazole (MBT) as the template molecule, and pyrrole as the functional monomer, we synthesized magnetic conductive imprinted photocatalysts (MCIPs) that were significantly efficient and stable through a suspension polymerization method. Moreover, the MCIPs not only exhibited a higher photodegradation capacity for MBT under visible light irradiation, but also possessed good selectivity. The specific surface areas of the resultant MCIPs were approximately four times that of pure g-C3N4. Furthermore, the results indicated that h+ was the major reactive species in the photocatalytic reaction system. The photodegradation mechanism was also discussed by analyzing the mass spectrum (MS), and the results demonstrated that MBT was degraded to H2O, CO2 and other small molecules, step by step. In addition, after five cycles, the MCIPs still showed high photocatalytic efficiency, indicating that the as-prepared MCIPs had excellent photochemical stability and good prospects for application in water treatment.
研究领域:
环境科学
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材料科学
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化学
✓ 已验证
产品关联
DOI
高影响因子
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