Chemical Engineering Journal Advances
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2025
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IF 7.1
Song Wang,Xinyi Luo,Luxiang Tang,Xi Tan,Gang Chen,Guizhi Zhang,Wenhao Xie,Lintao Xu,Zonghe Huang,Xianming Zhang
Membrane separation technology is widely used for wastewater treatment, but wastewater containing oil droplets and soluble pollutants results in severe membrane fouling. Photocatalysis technology is an efficient and eco-friendly way to degrade contaminants. In this work, photocatalytic BiOI/Ti3C2 composite membranes were prepared via a simple self-assembly vacuum filter method for oil-water emulsion separation and dye degradation. The pure water flux of the optimal BiOI/Ti3C2 composite membrane (M3) reaches 4720 Lm-2h-1bar-1, 1.2 times higher than that of pure Ti3C2 membrane. Simultaneously, the composite membrane M3 has a high flux and oil rejection ratio (over 97 %) for oil/water emulsions. In addition, the composite membrane M3 has an excellent flux and dye removal effect for methylene blue(0.9954), rhodamine B(0.9984), and methyl orange (0.8670), respectively. More importantly, the composite membrane M3 exhibits a high permeation flux and rejection ratio for methylene blue under visible light irradiation after five consecutive cycles, indicating the M3 membrane has a good self-cleaning ability. Furthermore, the mechanisms of separation and photodegradation were discussed. This work provides a new strategy combining membrane separation and photocatalysis technology to treat multi-component oily wastewater.
研究领域:
环境工程
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材料科学
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化学工程
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水处理技术
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DOI
高影响因子
ChemistrySelect
·
2024
·Vol. 9
·期 32
·e202401965
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IF 1.9
Xiulong Shi,Biyang Tuo,Shengqing Wang,Jianli Wang,Yaxin Deng,Xvjun Zhang
Graphical In this paper, heterojunction photocatalyst TiO 2 @BiOCl-BiOI was successfully synthesized by composite modification method combined with sol-gel method, and it was applied to the degradation of CR. Thanks to the heterostructure structure, TiO 2 @BiOCl-BiOI showed excellent photocatalytic performance for CR under simulated sunlight, with a removal rate of 96.45 %. After 5 times of recycling, the removal rate of CR by TiO 2 @BiOCl-BiOI is still higher than 87 %. Under the action of ⋅O − 2 , h + and ⋅O, CR is oxidized to H 2 O, CO 2 and other harmless substances. TiO 2 @BiOCl-BiOI heterostructure photocatalyst with high photocatalytic activity was prepared by the composite modification and sol-gel procedure. TiO 2 nanoparticles highly dispersed on the surface of TiO 2 @BiOCl-BiOI, which provides sufficient active sites for the photocatalytic degradation process. The photodegradation performance of the photocatalyst was evaluated by the removal rate of Congo Red. The researches showed that the degradation effect of TiO 2 @BiOCl-BiOI for Congo Red is significantly stronger than that of TiO 2 and BiOCl-BiOI, which is mainly due to the type-II heterojunction structure of TiO 2 @BiOCl-BiOI and its enhanced visible-light response. The experiments of free radical capture indicated that ⋅ and are the main active species in the photocatalytic degradation system. This study showed that TiO 2 @BiOCl-BiOI can almost completely degrade Congo Red under simulated sunlight, making it the harmless substances such as H 2 O and CO 2 .
研究领域:
环境科学
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材料科学
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DOI
高影响因子
Journal of Cleaner Production
·
2018
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IF 5.651
Xue Yang,Xiaoyu Wang,Yan Zhao,Lei Xu,Tingting Wang,Xinyan Zhang
Water pollution has posed a serious threat to the environment and human health. There is an urgent need to develop highly efficient and application-convenient photocatalytic materials. To overcome this critical problem, the novel recyclable BiOI/luffa fiber photocatalyst was prepared by hydrothermal and deposition method , respectively. Several means, namely Scanning Electron Microscopy, X-ray power diffraction, Energy Dispersive Spectrometer , Specific Surface Area Analyzer and Ultraviolet–visible spectroscopy were applied to characterize the composite. The optimal pretreatment condition of (CH 3 ) 2 CHOH and NaOH for luffa fiber was discussed. Further, the photocatalytic performance of BiOI/luffa was tested using methyl orange as target pollutant. The results showed that the composite prepared by deposition method had more uniform morphology and better properties. When the molar ratio of Bi:I in the reactants was adjusted to 2:5, the degradation rate of methyl orange by BiOI/luffa reached 98.86% for 70min under visible light. Importantly, the recycling test showed that the degradation rate still remained at 83.67% after three cycle usage. The obtained BiOI microspheres exhibited excellent visible light photocatalytic activity , and the luffa with high specific surface area could increase the adsorption of pollutants and facilitate the separation of BiOI.
研究领域:
环境科学
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材料科学
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DOI
高影响因子
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
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2019
·Vol. 102
·期 10
·5966-5975
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IF 3.094
Haocheng Yang,Jinjun Chen,Yong Zuo,Miao Zhang,Gang He,Zhaoqi Sun
In this study, TiO 2 nanorod arrays (TNR), Ag quantum dots (QDs) sensitized with TNR TiO 2 /Ag, bismuth oxyhalide (BiOI) nanosheets, and Ag QDs co-modified with TNR and TiO 2 /BiOI/Ag (TBA) were prepared by a stepwise process. The morphological, structural, compositional, optical, photocatalytic (PC), and photoelectrochemical (PEC) properties of the samples were investigated. The TBA-2 sample exhibited the highest photocurrent density (281.8 μA/cm 2 ) and photodegradation efficiency (93.3%), with values 9.7 times and 2.25 times higher than those for TNR, respectively. The improvement in sample performance can be attributed to the formation of a heterojunction between BiOI and TiO 2 , thereby enhancing the absorption of visible light and improving the charge separation efficiency; Ag QDs limit interfacial electron-hole pair recombination. The experimental results show that TBA can effectively promote light-induced carrier transport and visible light absorption, while inhibiting the recombination rate of the electron-hole pairs, PEC, and PC.
研究领域:
材料科学
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环境科学
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DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2019
·
IF 8.355
Jingzhen Wang,Chunshuai Cao,Yuanyuan Wang,Yingnan Wang,Binbin Sun,Lingyan Zhu
The strong persistence, wide presence and potential toxicities of perfluorooctanoic acid (PFOA) in aquatic environment makes it a challenge to develop advanced technologies to eliminate it from water. In this study, novel BiOI@Bi 5 O 7 I p-n heterojunction photocatalysts were facilely prepared by calcinating BiOI at 350 °C < T < 410 °C. Under simulated solar light irradiation, the degradation rate constant ( k = 0.247 h −1 ) of PFOA by the BiOI@Bi 5 O 7 I heterojunction prepared at 390 °C (T-390) was four times of that by pristine BiOI ( k = 0.061 h −1 ) and 1.2 times of that by Bi 5 O 7 I (prepared at 410 °C, k = 0.206 h −1 ). T-390 also exhibited excellent mineralization efficiency by removing about 60% of total organic carbon in 6 h of irradiation. The significantly enhanced photocatalytic activity of BiOI@Bi 5 O 7 I composite was mainly attributed by the unique band gap structure of the p-n heterojunction, which enhanced the visible-light absorbance and accelerated the separation of photogenerated charge carriers. The generated intermediate products were analyzed by ultra-performance liquid chromatography-mass spectrometry, and the results indicated that PFOA was decomposed by stepwise losing CF 2 units. The BiOI@Bi 5 O 7 I heterojunction also possessed very good durability and reusability, displaying a great potential in PFOA containing water treatment.
研究领域:
环境科学
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材料科学
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DOI
高影响因子
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
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2022
·Vol. 29
·期 42
·63233-63247
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IF 5.19
Ma Mingliang,Chen Yan,Jiang Jiabin,Bi Yuxin,Liao Zijian,Ma Yong
Excessive discharge of toxic dyes is detrimental to ecological system and human health. Therefore, an effective photocatalyst must be designed and developed to degrade dyes from wastewater. Herein, a novel one-dimensional (1D) flower-like recoverable ZnFe 2 O 4 /C/MnO 2 /BiOI magnetic composite photocatalyst was synthesized via electrospinning technique combined with hydrothermal method. The photocatalytic activities of composite photocatalyst were evaluated by degrading methyl orange (MO) and Rhodamine B (RhB) under simulated light irradiation. The efficiency of ZnFe 2 O 4 /C/MnO 2 /BiOI photocatalyst in visible light for 150 min reached 91% (MO) and 120 min reached 94% (RhB). Moreover, the degradation rate of MO still remained 78% after five cycles. The design of 1D magnetic flower-like composite provided a new strategy for preparing photocatalysts possessing excellent photocatalytic efficiency and cyclic stability.
研究领域:
环境科学
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材料科学
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DOI
PubMed
高影响因子
Journal of Inorganic and Organometallic Polymers and Materials
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2021
·Vol. 31
·期 8
·3262-3271
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IF 3.543
Zhang Feilong,Shao Yiliang,Shu Min,Li Chunlei,Zheng Yi
The separation efficiency of photocarriers is an important part of photocatalytic efficiency. Construction of composite with good contact is a hot topic. In this work, Bi 2 WO 6 is successfully connected with BiOI to form the chemical bonding interface through the same crystal unit, where a precipitation transformation phenomenon is revealed. The chemical bonding interface is conducive to transmission and separation of photocarriers to realize rapid and stable transport and separation through the interface, which is based on the photocurrent density of Bi 2 WO 6 /BiOI (BWOI) is about 6 and 40 times higher than Bi 2 WO 6 and BiOI, and the transfer resistance of BWOI is around 5 and 10 times lower than Bi 2 WO 6 and BiOI. Thus, the photocatalytic activity of BWOI is 2.8 and 33.35 times as much as those of Bi 2 WO 6 and BiOI. During the photocatalysis process, photogenerated holes (h + ) and superoxide radical (·O 2 − ) are the main oxidizers, and the constructed the chemical bonding interface displays excellent photostability.
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
APPLIED ORGANOMETALLIC CHEMISTRY
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2020
·Vol. 34
·期 10
·e5816
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IF 3.14
Shuo Zhao,Zhaolin Dou,Yuepeng Liu,Zhipeng Lv,Yingzhi Cheng,Yanyun Wang,Man Jiang,Shuping Zhuo
In this study, BiOI materials with controllable structure are designed by using ionic liquid as I source and template to create the surface oxygen defects, thus promoting the photogenerated carrier migration and enhancing the photocatalytic activity. The texture of BiOI is controlled by adjusting the pH values of reaction mixture and the corresponding formation mechanism is also explored based on the self-assembly behavior of ionic liquid. It is found that the sample BiOI-7 possesses the ultrathin nanosheets (2 ~ 4 nm) and abundant surface oxygen defects which are beneficial for accelerating carrier transfer and facilitating photocatalytic degradation. The photocatalytic activity of as-prepared BiOI is studied by using Rhodamine B (RhB), methyl orange (MO) and Bisphenol A (BPA) as target pollutants, respectively. Besides, water splitting reactions were also used to further check the photocatalytic activity. BiOI samples exhibit the enhanced photocatalytic activity than bulk BiOI and g-C 3 N 4 obtained by calcination of melamine. Especially, 92% of bisphenol A (BPA) can be degraded under light irradiation within 1 hr by using only 5 mg of BiOI-7 nanosheets, which is superior than most counterparts reported so far. This rapidly synthetic route can be applied in fabrication of other novel materials with diverse morphology and porous structure.
研究领域:
材料科学
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环境科学
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化学工程
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DOI
高影响因子
JOURNAL OF HAZARDOUS MATERIALS
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2013
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IF 3.925
Jun Hu,Sunxian Weng,Zuyang Zheng,Zengxia Pei,Mianli Huang,Ping Liu
BiOI photocatalysts with tunable morphologies from 2D laminar structure to 3D hierarchitectures have been prepared by a hydrothermal or solvothermal way using four kinds of solvents: water, ethanol, ethylene glycol and glycerol (these solvents are abbreviated as H 2 O, ETH, EG, and GLY hereinafter). The viscosity of the solvents plays a key role to the evolution on the morphologies and performances of BiOI samples. The BiOI synthesized in GLY exhibits excellent visible-light photocatalytic performances toward As(III), which is highly increased to that of N-TiO 2 . Further investigation reveals that the surface characteristics of BiOI nanosheets, the thickness of the nanosheets, and the way by which they integrate together play important roles in photocatalytic reaction process. The main active species is detected as O 2 − . Considering about the practical use, the BiOI synthesized in GLY is also work under illumination of natural sunlight, and total arsenic concentration can be decreased even below 10 μg/L from 1 mg/L As(III) aqueous solution within 3 h, which has reached the drinking water standard (0.01 mg/L). Moreover, its stable performance also shows its great potential application value in the wastewater treatment.
研究领域:
环境科学
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材料科学
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DOI
PubMed
高影响因子
Surfaces and Interfaces
·
2020
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IF 3.724
Liang Hao,Tongyang Liu,Jiancheng Yan,Yifei Hu,Feng Jiang,Qian Zhao,Yun Lu,Xuecheng Ping
Pure tetragonal BiOI coatings of nano-sized flower-like structure were prepared on the substrate of Bismuth foil by anodic oxidation. The combined results of XRD, Raman and SEM show that the BiOI crystal grains with an average size of 23.2nm preferentially grew along crystal face (102) and (110). The thickness of the as-prepared BiOI coatings was estimated to vary from 5 to 10 μm. The great thickness made the substrate of Bismuth foil had no effect on the photocatalytic activity of the BiOI coatings. Although the band gap (1.75 eV) of the anodized BiOI coatings is close to those prepared by other methods, the overall shift of the valence maximum (VBM) and the conduction band minimum (CBM) to a more negative potential position was observed. The shift made the formation of • O 2 ¯ radicals possible. • O 2 ¯ radicals played the key role in the photocatalytic degradation of MB organic dye under visible light irradiation. Meanwhile, photo-generated holes and • OH radicals were also helpful to the photocatalytic reaction. Compared with those prepared by other methods, anodized BiOI coatings showed a higher photocatalytic activity.
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
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
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2022
·Vol. 30
·期 11
·30197-30209
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IF 5.19
Feng Shan,Xie Taiping,Kong Deshun,Yang Fuling,Li Tao,Yang Junwei,Liu Meixin,Du Haigang,Su Zhimin
Many previous studies have underestimated the role of magnetic components in improving photocatalytic performance. It is significance to explore the migration mechanism of photoinduced carriers in magnetic heterojunction. Here, a magnetic heterojunction, BiOI/BaFe 12 O 19 , was synthesized by a simple preparation method. The optimal synthesis conditions and photocatalytic reaction conditions were explored. The growth mechanism of bismuth iodide oxide (BiOI) was elaborated by introducing a micromagnetic field stemming from barium ferrite (BaFe 12 O 19 ). The electrochemical impedance spectroscopy (EIS), Mott–Schottky curve (MS), transient fluorescence spectrometer (PL), and photocurrent response plot (i ~ t) tests indicated that the BiOI/BaFe 12 O 19 possessed a higher transfer capacity of electrons, higher separation efficiency of photoinduced carriers, stronger photocurrent response, and higher carriers density, compared with pure BiOI. The ultraviolet–visible diffuse reflectance spectrophotometer (UV–vis DRS), electron paramagnetic resonance spectrometer (EPR), MS, and quenching experiments revealed band structure configuration and migration mechanism of photoinduced carriers. The enhancement mechanism of photocatalysis and photocatalytic reaction mechanism was clearly proclaimed in BiOI/BaFe 12 O 19 catalytic system. Graphical Abstract
研究领域:
材料科学
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化学
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光催化
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磁学
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DOI
PubMed
高影响因子
RSC Advances
·
2019
·Vol. 9
·期 41
·23545-23553
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IF 3.049
Jianhui Li,Fan Yang,Quan Zhou,Lijie Wu,Wenying Li,Ruipeng Ren,Yongkang Lv
The ternary magnetic Fe3O4/BiOBr/BiOI (x : 3 : 1) photocatalysts were successfully synthesized by a facile solvothermal method. The samples were characterized by XRD, SEM, EDS, ICP-AES, XPS, UV-vis DRS, PL and VSM. Nitrogen-containing dye RhB was used as a degradation substrate to evaluate the photocatalytic degradation activities of the samples. The photocatalytic performance of Fe3O4/BiOBr/BiOI (0.4 : 3 : 1) is superior to other Fe3O4/BiOBr/BiOI (x : 3 : 1). Compared with binary magnetic Fe3O4/BiOBr (0.5 : 1) prepared in our previous work, the Fe3O4/BiOBr/BiOI (0.4 : 3 : 1) has obvious advantages in photocatalytic activity and adsorption capacity. And the specific surface area (48.30 m2 g−1) is much larger than that of the previous report (Fe3O4/BiOBr/BiOI (0.5 : 2 : 2)) synthesized by a co-precipitation method. Besides, after 25 s of magnetic field, Fe3O4/BiOBr/BiOI (0.4 : 3 : 1) can be rapidly separated from water. After eight recycling cycles, the magnetic properties, photocatalytic activity, crystallization and morphology of the Fe3O4/BiOBr/BiOI (0.4 : 3 : 1) catalyst remain good. The possible photocatalytic degradation mechanism of RhB under Fe3O4/BiOBr/BiOI (0.4 : 3 : 1) photocatalyst was also proposed. The results indicate that the ternary magnetic Fe3O4/BiOBr/BiOI (0.4 : 3 : 1) composite with high photocatalytic degradation efficiency, good magnetic separation performance and excellent recyclability and stability has potential application prospect in wastewater.
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
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DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）