POLYMERS FOR ADVANCED TECHNOLOGIES
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2018
·Vol. 30
·期 1
·101-109
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IF 2.137
Zongxue Yu,Xia Min,Fei Li,Di Yin,Yixing Peng,Guangyong Zeng
In this study, a novel dopamine modified graphene-based photocatalytic membrane with Bi 12 O 17 Cl 2 inserted was fabricated to modify the commercial cellulose acetate membrane via vacuum filtration method. Results showed the reduced graphene oxide (RGO)/poly(dopamine) (PDA)/Bi 12 O 17 Cl 2 -CA photocatalytic composite membrane exhibited 98% removal efficiency for methylene blue (MB) within 100 minutes and 96% removal efficiency for 4-CP within 160 minutes. Importantly, the photocatalytic composite membrane can simultaneously achieve dye degradation and oil-water separation in only one device within a short time. And the as-prepared membrane displayed great antifouling performance and recyclability after 10 cycles. Meanwhile, the membrane showed excellent stability in the agitated water bath or different pH conditions. In summary, the photocatalytic membrane investigated in this study opens new avenue for treatment of wastewater.
研究领域:
材料科学
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环境工程
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化学工程
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高影响因子
CHINESE JOURNAL OF CATALYSIS
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2019
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IF 4.914
Zeqing Long,Guang Xian,Guangming Zhang,Tao Zhang,Xuemei Li
A BiOCl-Bi 12 O 17 Cl 2 nanocomposite with a high visible-light response and a low photoinduced electron-hole pair recombination rate was successfully synthesized using an ultrasonic-hydrothermal method. The texture, structure, optical, and photocatalytic properties of the composite were characterized. The results showed that the composite had a sheet flower-like structure with a large specific surface area. Ultraviolet-visible diffuse reflection spectra and photoluminescence spectra showed that the composite had an excellent visible-light response and a low recombination rate of photoinduced electron hole pairs. The photocatalytic property of the composite was evaluated by the removal efficiency of rhodamine B and ciprofloxacin under visible-light illumination. The composite's reaction rate constant of removing rhodamine B (/ciprofloxacin) was approximately 8.14 (/4.94), 42.63 (/11.91) and 64.66 (/36.07) times that of Bi 12 O 17 Cl 2 , P25, and BiOCl, respectively. Furthermore, the composite showed a wide applicable pH range and excellent reusability. Mechanism analysis showed that photogenerated holes played a dominant role and ·O 2 − also contributed to photocatalytic degradation. In summary, this study presents a high-efficiency photocatalyst for wastewater treatment .
研究领域:
材料科学
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环境科学
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纳米技术
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化学
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DOI
高影响因子
Reaction Chemistry & Engineering
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2026
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IF 3.1
Tianyuan Xiao,Xinyue Dong,Yong Li,Xiaoya Ding,Guangming Yin
Non-stoichiometric bismuth oxyhalides represent a category of semiconductor photocatalysts with extensive application potential. Herein, Bi2O3, Bi12O17Cl2, and Bi12O17Cl2/β-Bi2O3 microsphere materials were prepared through the calcination. The photocatalytic degradation performance of Bi12O17Cl2/β-Bi2O3 composite microspheres on methylene blue (MB) simulated wastewater under visible light was investigated. The results indicate that the photocatalytic degradation efficiency of MB can reach up to 91.50% in a 10 mg/L solution by Bi12O17Cl2/β-Bi2O3 composite microspheres. The photocatalytic mechanism of Bi12O17Cl2/β-Bi2O3 was explored using free radical trapping experiments, UV-vis DRS, and Nyquist curve analysis, revealing that the material forms a type II heterostructure. This work presents a novel perspective on the design of advanced coupledsemiconductor materials for the degradation of organic pollutants.
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APPLIED SURFACE SCIENCE
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2020
·
IF 6.182
Binrong Li,Yanhua Cui,Yonghai Feng,Chundu Wu,Yongsheng Yan,Minjia Meng
The directional design of interfacial defects is a promising way to promote charge separation but simultaneously a great challenge due to their random formation in heterojunction. Herein, an alternative Bi 12 O 17 Cl 2 /Bi 2 WO 6 heterojunction with interfacial defects formed spontaneously is prepared by controlling the growth of Bi 2 WO 6 on the edges of Bi 12 O 17 Cl 2 nanobelts via ion exchange process. These interfacial defects can efficiently increase the carrier density and serve as charge separation centers to extend the lifetime of carriers and activate O 2 to O 2 − and further to OH. The zigzag interfaces and irregular edges facilitate the interaction between active sites and reactants. The heterojunction morphology and the interfacial defect concentration can be controlled by tuning the solvothermal time. Consequently, the optimal Bi 12 O 17 Cl 2 /Bi 2 WO 6 heterojunction exhibits significantly enhanced visible light photocatalytic performance toward the degradation of phenols, antibiotics and dyes as compared to that of mono-Bi Bi 12 O 17 Cl 2 and Bi 2 WO 6 photocatalyst.
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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DOI
高影响因子
ENERGY & FUELS
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2026
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IF 6
Lefei Cao,Fei Qi,Chengfan Fu,Ge Xu,Nan Zhang,Yayun Pu,Xiaosheng Tang,Qiang Huang
Although dielectric barrier discharge (DBD) plasma represents a promising technology for CO2 conversion, its standalone application remains limited by low conversion efficiency, which could be improved via filling a suitable photocatalyst into the plasma reactor. In this paper, the synergistic effect of discharge plasma and Bi12O17Cl2@Cs2SnCl6–Sb0.35 photocatalyst was studied, achieving efficient carbon dioxide conversion. With the help of a photocatalyst, DBD plasma successfully realized the conversion of CO2 and water to CO, methanol, and ethanol. Compared with Cs2SnCl6–Sb0.35, Bi12O17Cl2-10@Cs2SnCl6–Sb0.35 increased methanol and ethanol production by 186 and 80%, respectively. Meanwhile, the conversion of carbon dioxide increased significantly with the presence of water in the plasma-photocatalyst system, achieving a conversion ratio of 35.6%. This boost is attributed to the enhancement of the surface conductivity of the photocatalyst during the plasma discharge, which in turn optimizes the charge transfer process. This paper provides a new idea and a promising technical roadmap for the resource utilization of CO2, which exhibits scientific significance and application potential.
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Journal of Materials Chemistry A
·
2018
·Vol. 6
·期 19
·9200-9208
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IF 9.931
Yaozhu Wang,Xueyan Huang,Kaiqiang Wang,Lulu Zhang,Bo Wang,Zhibin Fang,Yan Zhao,Fan Gao,Ping Liu,Wenhui Feng
Ultrathin Bi12O17Cl2 nanosheets, with the thickness of 3–4 nm, were prepared by the photo-assisted Ag exfoliation method. This method not only achieves the thickness regulation, but also introduces elemental silver on the surfaces of ultrathin Bi12O17Cl2 nanosheets. The obtained ultrathin Bi12O17Cl2 nanosheets modified with Ag show enhanced visible light absorption, improved carrier generation and separation efficiency under visible light irradiation. Their photocatalytic performance for rhodamine B (RhB) degradation is 5 times higher than that of bulk Bi12O17Cl2. It is expected that the present synthetic strategy may provide a new design concept for the fabrication of ultrathin structures.
研究领域:
材料科学
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环境科学
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高影响因子
危险品化学品经营许可证（带存储）