JOURNAL OF MATERIALS SCIENCE
·
2017
·Vol. 53
·期 5
·3682-3691
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IF 2.599
Chang Meng-Jie,Wang Hua,Li Hui-Lu,Liu Jun,Du Hui-Ling
A novel magnetic Fe 2 O 3 /BiOI hybrid nanostructure was fabricated by combining electrospinning and successive ionic layer adsorption and reaction (SILAR) method. Hollow Fe 2 O 3 nanofibers with internal diameter around 50 nm were produced by using electrospinning and calcinations of the as-spun fibers at 450 °C for 2 h. BiOI was deposited on the Fe 2 O 3 nanofiber surface by SILAR method, and the BiOI quantity could be controlled by the growth cycles of SILAR. Similar synthetic procedure could also be used to prepare Fe 2 O 3 /BiOBr and Fe 2 O 3 /BiOCl hybrid nanostructures. The BiOI on the magnetic nanofiber surface is highly crystalline with lamellae morphology of around 16 nm in thickness from the X-ray diffraction and scanning electron microscopy detections. The obtained Fe 2 O 3 /BiOI hybrid nanostructures exhibit superior visible light catalytic performance toward decomposition of RhB. This new method, which can also be used to prepare other magnetic photocatalyst simply at low cost, is suitable for practical applications.
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
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
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2022
·
IF 8.025
Dingliang Dai,Jianhao Qiu,Guanglu Xia,Lu Zhang,Hong Ma,Luan Yang,Jianfeng Yao
Flower-like BiOI was decorated by CdS nanodots and followed by the introduction of iodine vacancies (V I ) for photocatalytic sodium lignosulfonate (SLS) valorization under visible light. The iodine vacancies could adjust the band configuration, strengthen the light absorption and act as electron traps, while the intimate contact between BiOI and CdS nanodots provides a high-speed channel for charge transfer. As a consequence, the photocatalytic performance of SLS conversion into value-added vanillin was greatly improved over CdS/BiOI-V I compared with those of CdS, BiOI and CdS/BiOI. The highest yield of vanillin is 10.95 mg/g SLS over CdS/BiOI-V I , about 5, 8.7, 1.3 times those of CdS, BiOI, CdS/BiOI, respectively, and exceeding most related photocatalysts reported elsewhere. More significantly, as to the lignin from Masson pine and alkali lignin, the corresponding vanillin yield can reach 7.04 and 6.54 mg/g lignin , respectively, under the same condition, which suggests the great potential and universality for photocatalytic lignin valorization over such CdS/BiOI-V I heterostructure.
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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产品关联
DOI
PubMed
高影响因子
NEW JOURNAL OF CHEMISTRY
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2023
·Vol. 47
·期 35
·16611-16620
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IF 3.3
Xin Mai,Ran Gao,Yeheng Zhang,Junnan Chen,Wensong Lin,Chengli Mai
(001)-TiO2/BiOI photocatalysts with microsphere morphology were synthesized by a solvothermal method. The (001)-TiO2/BiOI demonstrated highest photocatalytic performance for the RhB degradation rate of 0.049 min−1 under visible light, which is 5 and 7 times that of (001)-TiO2 and BiOI, respectively. The increased photocatalytic efficiency is due to the construction of heterojunctions, which promote the transportation of photo-generated carriers. The good photochemical stability of the prepared photocatalysts was demonstrated by cycling experiments. The radical quenching experiments show that ˙O2− and ˙OH are the principal active species in the photocatalytic reaction mechanism. Finally, a possible mechanism of p–n heterojunctions in the photocatalytic reaction process was proposed.
研究领域:
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
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2025
·Vol. 36
·期 3
·1-13
·
IF 2.8
Zhao Xiaohui,Hao Liang,Zhao Qian,Guan Sujun,Lu Yun
We prepared CuWO 4 films and BiOI-CuWO 4 heterojunction films on the surface of copper wire mesh using a simple and low-cost anodization method and immersion method. The light absorption measurement of these films indicated that, compared to the single CuWO 4 films, the BiOI-CuWO 4 heterojunction films exhibited a significant enhancement in light absorption capacity in both the ultraviolet and visible light regions, and its bandgap width continuously decreased with an increase in the number of immersion cycles. The heterojunction formation also enhanced the separation and transfer of photogenerated charge carriers within the films, leading to an increased photocatalytic activity for the degradation of methylene blue (MB) under simulated sunlight. The activity of the heterojunction films was improved by approximately 57% at most compared to the single CuWO 4 films. Their photocatalytic activity remained at a high level after multiple repeated evaluations, ensuring stable performance during long-term use. Active species trapping experiments demonstrated that superoxide radicals play a crucial role in the photocatalytic degradation process. The photogenerated charge carrier transfer mechanism we propose suggests that the photogenerated electrons generated in BiOI transfer to the conduction band of CuWO 4 , while the photoinduced holes produced in the valence band of CuWO 4 transfer to the valence band of BiOI simultaneously, achieving the spatial separation and transfer of photogenerated electrons and holes.
研究领域:
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
Catalysts
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2020
·Vol. 11
·期 1
·24
·
IF 3.52
Juan Du,Jiaxin Zhang,Tingyu Yang,Renming Liu,Zhiyi Li,Dandan Wang,Tong Zhou,Yucun Liu,Chunbo Liu,Guangbo Che
The BiOI/NH2-MIL-125(Ti) composite photocatalyst with excellent photocatalytic performance was prepared by the solvothermal method. For the BiOI/NH2-MIL-125(Ti) (BNMT) system, the contents of NH2-MIL-125(Ti) in BNMT-4, BNMT-5, BNMT-7, BNMT-9, and BNMT-10 were 4 wt %, 5 wt %, 7 wt %, 9 wt %, and 10 wt %, respectively. XRD, XPS, SEM, and TEM characterizations indicated that BiOI/NH2-MIL-125(Ti) was successfully prepared. Brunauer, Emmett, and Teller (BET) and UV–vis diffuse reflectance spectra photoelectrochemical analysis indicated that BNMT-9 can make the specific surface area and photo absorption region larger than BiOI. In addition, the separation efficiency of photogenerated carriers was improved, and the recombination efficiency was reduced. The degradation percentages of Rhodamine B (RhB) and p-chlorophenol (P-CP) reached 99% and 90% over BNMT-9 under visible light irradiation. Additionally, the catalysts had high stability. The results of the active spices trapping experiments test indicated that h+was the main active species. The possible degradation mechanism was proposed.Keywords:photocatalysis;BiOI;NH2-MIL-125(Ti);organic pollutants
研究领域:
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
ChemSusChem
·
2025
·
IF 6.6
Yongbo Kuang,Yu Zhu,Ying Wang,Qitao Liu,Weilong Qin,Hao Zhang,Shuqi Wu,Jianming Li,Qinglu Liu
Bismuth oxyiodide (BiOI), owing to its suitable band gap and excellent light absorption coefficient, has emerged as a highly promising candidate material for photoelectrochemical (PEC) applications. However, its PEC performance is often hindered by poor charge transport and significant carrier recombination. In this study, we propose a combined strategy based on ultrasonic spray pyrolysis (USP) to fabricate high performance BiOI photoanodes by promoting preferential orientation growth, enhancing crystallinity, and optimizing morphology. The optimized BiOI photoanodes exhibited an unprecedented incident photon-to-current efficiency (IPCE) exceeding 60% and demonstrated excellent stability. Comprehensive characterizations reveal that our strategy synergistically facilitates carrier transport and reduces bulk recombination. The enhanced charge separation and transport properties of BiOI demonstrated in this study hold significant promise for its practical applications across various fields.
研究领域:
材料科学
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光电器件
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能源研究
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产品关联
DOI
PubMed
高影响因子
Advanced Materials Interfaces
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2020
·Vol. 7
·期 9
·1901879
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IF 4.948
Shuaishuai Peng,Jingxia Yang,Lei Guo,Jinjie Wang,Jiachang Zhao,Jingli Xu,Zhiquan Li
CeO 2 with different morphologies (nanoparticles/NP, nanorods/NR, nanocubes/NC, nano-octahedra/NO) are synthesized and decorated on BiOI nanoplates substrates to form CeO 2 @BiOI composites, which are used for aqueous Cr(VI) degradation. The intersurface states between BiOI and diverse CeO 2 nanoparticles exhibit distinct behaviors when checked by XPS and photoluminescence intensity. The Cr(VI) degradation results show that the synthesized CeO 2 @BiOI nanocomposites possess higher photocatalytic activity than pure CeO 2 or BiOI, and the CeO 2 -NP@BiOI nanocomposite (molar ratio of CeO 2 : BiOI = 1:2) is the best one among them, with which the Cr(VI) is degraded up to 95.0% after 30 min irradiation using it as the photocatalyst. The superior catalytic performance of CeO 2 -NP@BiOI can be attributed to a higher Ce 3+ ratio of CeO 2 -NP, a larger specific surface area, relatively low OH/CO 3 2− content on the composite surface, and especially the good interaction between the CeO 2 (111) facet and the BiOI surface.
研究领域:
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
CHEMICAL ENGINEERING JOURNAL
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2022
·
IF 16.744
Sihan Ma,Xian Luo,Guang Ran,Yipeng Li,Ziqi Cao,Xinyi Liu,Guoqiang Chen,Jianghua Yan,Lin Wang
Optical antibacterial agents present great potential in eliminating infectious pathogens. It is of great significance to construct effective photonic antibacterial agents with outstanding light absorption properties. Herein, 2D engineering defect nanosheets BiOI/Bi with Bi decoration and defect engineering (BiOI-DE) are constructed to perform photonic sterilization. On the one hand, the rational designed BiOI-DE can effectively promote the broad-spectrum light absorption ability to enhance the light utilization rate. On the other hand, the substantive structure can simultaneously harvest the enhanced photonic carriers and thermal effect when irradiated with high penetration ability NIR, further exhibiting higher activity in killing Escherichia coli (E. coli) than that of single BiOI with poor light absorption. The sterilization efficiency is over 99%. Moreover, the causes of the photothermal effect are discussed, indicating that the change of BiOI bandgap and surface bismuth decoration displays a critical role in enhancing light absorption and creating heat energy. In the meantime, the structural advancement of BiOI-DE effectively improves the photocatalytic activity, the synergistic photothermal-catalytic process establishes a favorable condition for improving antibacterial performance. This system provides rational design and potential inspiration for high efficient antibacterial strategy by employing defect engineering approaches.
研究领域:
材料科学
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生物医学
·
光催化
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产品关联
DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2020
·
IF 6.182
Xuecheng Hu,Guohong Wang,Juan Wang,Zifei Hu,Yaorong Su
Herein, a step-scheme heterostructure photocatalyst formed by macroporous NiO foams and BiOI microspheres is successfully fabricated. The as-obtained NiO/BiOI heterostructure can be employed as an effective photocatalyst under solar light for the RhB degradation, and the optimum rate constant of 57.2 × 10 −3 min −1 is achieved with an optimal mass ratio of NiO to BiOI (10%) in the composite, which is 1.7 and 8.0 times as high as that of singular BiOI and NiO, respectively. The increased light utilization of the macroporous/microspheric hierarchical system and the formation of high quality heterojunction interface between NiO and BiOI are responsible for the improvement in photocatalytic activity. In addition, the underlying step-scheme heterojunction mechanism for efficient charge transportation and separation is also proposed. Our present work demonstrates that the step-scheme heterojunction is a feasible way to obtain high efficiently photocatalysts and might inspire some new strategies in the area of photocatalysis.
研究领域:
材料科学
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环境科学
·
化学
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产品关联
DOI
高影响因子
APPLIED CATALYSIS B-ENVIRONMENTAL
·
2012
·
IF 5.625
Liqun Ye,Junnian Chen,Lihong Tian,Jinyan Liu,Tianyou Peng,Kejian Deng,Ling Zan
BiOI thin film (BiOI TF) was prepared via a low temperature chemical vapor transport (CVT) route for the first time, and characterized by X-ray diffraction, X-ray photoelectron spectroscopy, field emission scanning electron microscopy, transmission electron microscopy, high-resolution transmission electron microscopy, fast-Fourier transform pattern and UV–vis diffuse reflectance. As-synthesized BiOI thin film was composed of high symmetrical BiOI nanosheets with dominant exposed {0 0 1} facets. It displayed better photocatalytic activity, durability and selectivity than benchmark P25 TiO 2 thin film and the origin come from the layered structure and good photoelectrochemical performance, CVT immobilization, the 100% terminal oxygen atoms of {0 0 1} facets, respectively. At end, the photocatalytic mechanism with O 2 − production was studied.
研究领域:
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
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2019
·
IF 3.131
Hongxuan Qiu,Jiwen Hu,Run Zhang,Wenting Gong,Yichang Yu,Hongwen Gao
Nowadays, oil spills have occurred frequently, which is seriously harmful to the aquatic wildlife and the ecological environment. The photocatalysis is one important approach to degrade the diesel. The diesel floats on the water surface and is difficult to be removed by direct photocatalysis. However, floating photocatalytic composites can solve this problem. We used one facile solvothermal synthesis method to deposit the metal semiconductor (BiOI) on the expanded perlite (EP) and obtained one efficient photocatalysis nanocomposites, which could float on the water surface with good efficient adsorption and excellent degradation of the diesel. And the experimental results shows a good photocatalytic performance, which is up to 85% of removal rate of the diesel after irradiation for 2 h under simulated sunlight. In addition, this composite is a recycled material (reusing for 5 times) and eco-friendly material with low biotoxicity. As a result, the proposed combination of adsorption and photocatalysis will provide a novel strategy to greatly facilitate the treatment of diesel wastewater.
研究领域:
环境科学
·
材料科学
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产品关联
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2022
·
IF 6.371
Baowei Cao,Dachuan He,Fei Rao,Qadeer Ul Hassan,Xiaolong Cai,Lingna Liu,Fan Xue,Gangqiang Zhu
BiOI-loaded flower-like CeO 2 (BiOI/CeO 2 ) p-n heterojunction was synthesized via a simple two-step chemical route. The phase structure and chemical states of the heterojunction were analyzed by X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS), respectively. The transmission electron microscopic (TEM) and the scanning electron microscope (SEM) reveal the close contact between BiOI and CeO 2 . The formation of the p-n heterojunction is verified by the Mott-Schottky curves. The p-type BiOI with a narrow band-gap when loaded on CeO 2 can not only improve the separation of photogenerated electron-hole pairs but also facilitate the absorption of visible light. The photo-oxidative removal efficiency of 9%BiOI/CeO 2 among other heterojunctions for NO reaches 45.49% and remains highly stable with an efficiency of 40.40% after the five cycles. Trapping experiments and ESR measurements were conducted to explore the contribution of charge carriers and the reactive oxygen species during the photocatalytic NO removal. This work highlights that constructing such p-n heterojunction by loading BiOI on CeO 2 microstructures can significantly enhance photocatalytic NO removal.
研究领域:
环境科学
·
材料科学
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DOI
高影响因子
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