JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2019
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IF 6.361
Xia Zhang,Daolei Wang,Xiaokun Man,Jiang Wu,Qizhen Liu,Yongfeng Qi,Zhiqiang Liu,Xiaoyan Zhao,Jiaxi Wu,Chenyu Hao
The morphology of catalyst is a very important factor influencing the photocatalytic activity of the catalyst. Owing to its scientific and technological importance, controllable preparation of photocatalysts with different morphologies has been studied. In this work, BiOIO 3 /g-C 3 N 4 heterojunction composites are synthesized using hydrothermal method and the composites with different morphologies are fabricated by adjusting the amount of NaOH in precursor solutions to control the growth of BiOIO 3 crystal plane. The physicochemical properties of BiOIO 3 /g-C 3 N 4 heterojunction composites were investigated by XRD, XPS, FTIR, SEM, TEM, HRTEM, BET, UV–vis DRS and PL characterization. The effect of the BiOIO 3 morphology on the photocatalytic efficiency of BiOIO 3 /g-C 3 N 4 heterojunction composites was evaluated by photocatalytic removal of gas-phase Hg 0 under visible light irradiation. When the morphology of BiOIO 3 is regular square-like, BiOIO 3 /g-C 3 N 4 has the optimal removal efficiency 92.6% of Hg 0 . Finally, electron-hole migration path and photocatalytic mechanism of catalysts are 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
PubMed
高影响因子
ACS Applied Nano Materials
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2024
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IF 5.3
Aili Yuan,Tengfei Huang,Yanzhen Guo,Yaru Wei,Huili Liu,Baocheng Yang,Binbin Chang
The integrated dual-channel pathway is regarded as an ideal process for photocatalytic H2O2 production. However, it is a key scientific challenge to rationally design photocatalysts for achieving H2O2 production through such a dual-channel pathway. Here, we designed surface oxygen vacancy-modified BiOIO3 (BIO-OVs-x) with spatially separated redox reaction centers by constructing a facet heterojunction for directly utilizing O2 and H2O to photosynthesize H2O2. Under white light irradiation, optimal BIO-OVs-2 exhibited the highest H2O2 production rate of 215.5 μmol g–1 h–1, which was 3 times more than that of BiOIO3, as well as an apparent quantum yield of 5.76% at 350 nm. Photoelectrochemical experiments confirmed that the introduction of oxygen vacancies boosted the efficiency of charge separation and transfer and adjusted the band structure. Control experiments and theoretical studies elucidated photocatalytic reaction active sites and the charge transport mechanism of BIO-OV catalysts. More importantly, the introduction of oxygen vacancies in BiOIO3 reduced the free energy for OH* of the water oxidation reaction and promoted the occurrence of the water oxidation reaction. This work provides a valuable basis for the fine design of a high-performance photocatalyst and for understanding the mechanism of hydrogen peroxide production.
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
Nano Energy
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2025
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IF 17.1
Yuanchu Qin,Qinghao Xu,Junhao Gong,Jie Huang,Wen-Long Wang,Chuqiao Lyu,Wenbo Ding
Antibiotic, particularly from tetracycline derivatives, poses severe environmental and health challenges due to their stability, bioaccumulation, and resistance to traditional wastewater treatment methods. Advanced oxidation processes, including photocatalysis, offer potential solutions but are hindered by limitations like rapid recombination of photogenerated electron-hole pairs. This study introduces an innovative photoelectrocatalytic system combining BiOIO 3 (BIO) with a triboelectric nanogenerator (TENG). BIO, with its unique ferroelectric properties and nanosheet morphology, enhances charge carrier separation and reduces recombination, achieving significantly improved degradation rates compared to conventional photocatalysts. TENG provides a sustainable power source by converting mechanical energy into electrical energy, modulating charge dynamics in BIO through band bending and alignment with its intrinsic electric field. The integration of TENG and BIO creates a synergistic effect, enhancing the generation of reactive species (RSs) and achieving degradation efficiencies 1.59 times higher than photocatalysis alone. The system demonstrates robust, scalable, and environmentally friendly performance, offering a promising solution for efficient antibiotic removal in water treatment 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
Journal of the Taiwan Institute of Chemical Engineers
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2018
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IF 3.849
Junlei Zhang,Zhen Ma
A novel Ag 3 VO 4 /BiOIO 3 heterojunction catalyst was prepared by loading Ag 3 VO 4 nanoparticles onto BiOIO 3 nanosheets via precipitation. Ag 3 VO 4 /BiOIO 3 exhibited obviously higher activity than Ag 3 VO 4 and BiOIO 3 in photocatalytic degradation of aqueous dyes and tetracycline hydrochloride under visible-light irradiation. The recyclability of the catalyst was confirmed by cycling experiments. Photogenerated holes (h + ) and superoxide radical anions ( · O 2 − ) were demonstrated to be the main active species. Ag 3 VO 4 /BiOIO 3 can facilitate the separation and transfer of photogenerated carriers more efficiently than Ag 3 VO 4 and BiOIO 3 . Possible photocatalytic mechanisms were proposed.
研究领域:
材料科学
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环境科学
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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 COLLOID AND INTERFACE SCIENCE
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2020
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IF 7.489
Beibei Wang,Dongyun Chen,Najun Li,Qingfeng Xu,Hua Li,Jinghui He,Jianmei Lu
We report an unique 2D/2D Iodine doped BiOIO 3 /g-C 3 N 4 heterojunction was successfully prepared. The iodine doped BiOIO 3 was prepared by a simple solvent exchange method and combined with g-C 3 N 4 by solvothermal method . The prepared photocatalyst has potential application value in the future due to its excellent stable cycle property. BiOIO 3 nanoplates and g-C 3 N 4 nanosheets form a close interfacial contact directly, so the catalyst has higher charge transport efficiency and wide visible range due to the introduction of iodide ions. Synergistic heterojunction exhibits strong photocatalytic activity for degradation of NO at ppb-level under visible light , of which 30% Iodine doped BiOIO 3 /g-C 3 N 4 can achieve a maximum removal rate of 57% for NO. According to the experimental results of ESR and other experiments, a more complex Z-scheme photocatalytic mechanism is proposed, which has stronger redox ability than the traditional mechanism.
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
PubMed
高影响因子
MATERIALS RESEARCH BULLETIN
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2023
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IF 5.4
Xin Yang,Zhaopeng Zhang,Jiang Wu,Zhengrong Zhu,Tao Zhang,Ping He,Yongfeng Qi,Shang Xiang,Mengjie Bai,Xingyue Qi
Construction of heterojunction and formation of oxygen vacancy are effective methods to improve the performance of photocatalysts. In this work, Er 3+ -doped BiOIO 3 /g-C 3 N 4 photocatalyst with oxygen-rich vacancies was prepared by a simple hydrothermal and calcination method for the photocatalytic oxidation of elemental mercury. The structural properties of BiOIO 3 /g-C 3 N 4 /Er 3+ were analyzed by XRD, SEM and BET. The results showed that all samples exhibited good photocatalytic oxidation ability for Hg 0 under visible light irradiation. Among them, the photocatalyst with Er 3+ -doped BiOIO 3 /g-C 3 N 4 and then calcined has the highest removal efficiency of Hg 0 , which is 68.83%. This may be due to the increase of oxygen vacancy caused by Er 3+ doping, which enables the photocatalyst to have higher electron transfer rate and wider visible light absorption range. Finally, the possible mechanism of photocatalytic oxidation of gaseous elemental mercury with BiOIO 3 /g-C 3 N 4 /Er 3+ photocatalyst was proposed. This study provides some reference for the design and application of photocatalysts containing oxygen vacancies.
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
SEPARATION AND PURIFICATION TECHNOLOGY
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2021
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IF 7.312
Zhijia Zhu,Chenmiao Zhu,Ruiying Yang,Lingfeng Yan,Chunyan Hu,Baojiang Liu
Exploring the efficient and sustainable photocatalysts is the key pot for the improvement of photocatalytic efficiency. In this work, a series of Bi 5 O 7 I/BiOIO 3 composite materials were successfully prepared via a mild hydrothermal method to make layered BiOIO 3 nanosheets uniformly grown in-situ on the smooth surface of Bi 5 O 7 I microrods. The electronic channel at the interface constructed by the in-situ growth could drastically shorten the distance of electron transmission to accelerate the electron transfer. The formation of Bi 5 O 7 I/BiOIO 3 heterojunction was determined via the characterization of the composition and photochemical analysis. Benefited from this structure, the Bi 5 O 7 I/BiOIO 3 with the mass ratio of 1:1 exhibited over 90% efficiency in degradation of 4 different antibiotics after irradiation for 120 min. After that, 5 cycles proved that Bi 5 O 7 I/BiOIO 3 has excellent stability and reusability, which can guarantee the application in the practical process. Finally, the electron migration path and photocatalytic mechanism of the catalyst are inferred base on the capture experiment and ESR test, which proposed that h + and ·O 2 - were the primary active species in the photocatalytic process and confirmed the formation of Z-type heterojunctions between Bi 5 O 7 I and BiOIO 3 . The heterostructure with well-matched band structure enhances the separation and migration of photogenerated charges, which contributes to improve the photocatalytic activity. The design of novel photocatalyst with high efficiency and low-toxicity provides a new approach to achieve full utilization of solar energy and efficient environmental purification.
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 PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
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2023
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IF 4.3
Qingyun He,Shanxi Gong,Qinghua Liang,Zhifeng Liu,Binbin Shao,Ting Wu,Yuan Pan,Xiansheng Zhang,Miao He,Lin Ge,Jingwen Sun
A novel Schottky heterojunction was obtained by co-calcining fish-scale tubular carbon nitride (FTCN), V-BiOIO 3 and Tungsten carbide (WC) for photocatalytic degradation of tetracycline hydrochloride (TCH). The novel Schottky heterojunction has been analyzed by several characterizations and experiments. The case of photocatalytic degradation was studied for different initial concentrations, electrolyte and pH, respectively. The experiments have indicated that the V-BiOIO 3 /g-C 3 N 4 /WC performed an excellent activity of photocatalytic for TCH degradation (89.0%). In the mechanism analysis, we first deduce that the V-BiO3/FTCN compound belongs to the S-scheme heterojunction photocatalysts based on the properties of the band gap structure, which can effectively suppress recombination of joint carriers. Secondly, the introduction of the cocatalyst WC formed Schottky junction, which could play a role as an electronic library to trap e − and promote the separation of photo-induced carrier and thus maximize the strong oxidation ability of h + . In addition, the introduction of WC could also significantly enhance the optical absorption properties of the composites. This research could provide a new idea for the construction of novel and efficient carbon nitride-based photocatalysts under VSL (visible light), and promote its practical application in environmental remediation.
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
ENERGY & FUELS
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2021
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IF 3.605
Jianwen Guo,Jiang Wu,Yu Guan,Jianmin Wang,Qizhen Liu,Xu Mao,Xuemei Qi,Ping He,Huaning Wang
A Z-scheme heterojunction polyhedral-shaped BiOIO3/MIL-53(Fe) photocatalyst is prepared by a solvothermal method. The samples are characterized by XRD, XPS, SEM, TEM, FT-IR, UV–vis, PL, and other material characterization analysis methods. The photocatalytic performance of photocatalysts is studied for removal of vapor-phase mercury (Hg0) under visible-light irradiation. The results suggest that the Hg0 removal efficiency of the BiOIO3/MIL-53(Fe) composite is significantly improved compared with that of MIL-53(Fe). When the molar ratio of BiOIO3 and MIL-53(Fe) is 2:1, the BiOIO3/MIL-53(Fe) composite photocatalyst exhibits the best Hg0 removal efficiency, reaching 74.19%. BiOIO3 and MIL-53(Fe) form a Z-scheme heterojunction with a suitable energy band structure, which results in the effective separation of photoinduced electron–hole pairs and delays their recombination. Finally, the photocatalytic oxidation mechanism of Hg0 by the BiOIO3/MIL-53(Fe) composite is proposed, which paves the way for the study of the built-in electric field and electron transport channels between binary photocatalyst materials.
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
OPTICAL MATERIALS
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2022
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IF 3.754
Hao Hu,Chengdong Xu,Jiacheng Jin,Mingchen Xu,Yue Cheng,Weiwei Ji,Zhencen Ding,Min Shao,Yushan Wan
In this paper, BiOIO 3 and Bi 2 O 4 nanosheet monomers were synthesized and used to prepare several BiOIO 3 /Bi 2 O 4 composites by an ultrasonic impregnation method. The resulting photocatalytic materials were characterized by XRD , SEM, TEM, XPS , FTIR, PL , UV–Visible diffuse reflectance spectroscopy (DRS), and BET. The photocatalytic activity of the BiOIO 3 /Bi 2 O 4 composites was evaluated by the degradation of rhodamine B (RhB) and ciprofloxacin (CIP) under simulated sunlight and compared to the activities of BiOIO 3 and Bi 2 O 4 operating alone. The results showed that Bi 2 O 4 was closely attached to the surface of BiOIO 3 , and the composite had a good degradation effect on RhB and CIP, with the best performing material being a 0.9-BiOIO 3 /Bi 2 O 4 composite, which achieved 97.6% degradation of RhB within 60 min and 85.6% degradation of CIP within 120 min. The observed degradation performance was considerably higher than that of other composite samples and monomers due to the good energy level matching of the BiOIO 3 /Bi 2 O 4 composite, which broadened the light response interval, improved the electron transfer rate and enhanced the photocatalytic activity. Free radical capture experiments showed that the ·O 2 - and h + free radicals significantly contributed to the degradation of pollutants. Cyclic tests showed that the composite also had good stability. The results of this study showed that bismuth-based photocatalysts might be used for environmental remediation.
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
Energy & Environmental Materials
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2025
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IF 14.1
Xiangdong Shi,Qingtao Chen,Xiaoyun Qin,Xianghai Rao,Sihui Li,Guixia Liu,Jinxian Wang,Xiangting Dong,Dan Luo,Fenghua Chen
Built-in electric field coupled piezoelectric polarization engineering is a promising method to adjust and boost the catalytic performance of photocatalysts. Herein, BiOIO 3 -Bi 2 Te 3 type-II heterojunction piezo-photocatalyst was proposed and prepared by a sequential hydro-solvothermal method. Due to the co-drive of the heterojunction and photothermal-piezoelectric polarization effect certified by piezoelectric force microscopy, COMSOL simulations, and infrared thermography, the photocatalytic degradation performance of the as-prepared BiOIO 3 -Bi 2 Te 3 on rhodamine B was dramatically improved under the co-excitation of visible light and ultrasound compared with under the single light irradiation and the single ultrasonic conditions. Typically, the BiOIO 3 -Bi 2 Te 3 photocatalyst always showed significantly better catalytic degradation performance than the pure Bi 2 Te 3 , BiOIO 3 , and BiOIO 3 /Bi 2 Te 3 mechanical mixtures. Impressively, based on the optimal conditions obtained by systematically studying the effects of temperatures, ultrasound intensities, and inorganic salts on the piezo-photocatalytic rhodamine B degradation, the optimum composite ratio BiOIO 3 -Bi 2 Te 3 -20 piezo-photocatalyst can also effectively remove tetracycline and Cr(VI), and also achieve the purpose of simultaneously removing a mixture of these three pollutants with good recycling stability. Such enhanced catalytic performance was mainly attributed to the disruptions of the electrostatic equilibrium and saturation effects of the built-in electric field under successive ultrasonic and photoinduced co-disturbance, thus enhancing the driving force of separation and migration of photogenerated carriers as verified by electrochemical tests, energy band structure theory, and DFT calculations. Based on which and the sacrificial agent experiments, the photocatalytic degradation mechanism was proposed. This research showcased the significant potential for environmental remediation using solar energy and mechanical energy cooperatively.
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
SEPARATION AND PURIFICATION TECHNOLOGY
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2024
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IF 8.1
Zhaoxin Huang,Shasha Zhang,Pengfei Zhu,Ming Duan,Yuling Jiang,Yu Chen
The BiOIO 3 /Bi 2 WO 6 binary catalyst was prepared by hydrothermal method, and a Bi 0 /I − -BiOIO 3 /Bi 2 WO 6 all-solid-state Z-scheme heterojunction composite catalyst with Bi 0 deposition and I-doping was prepared by further reducing it with NaBH 4 as reducing agent. When the content of BiOIO 3 is 20 wt% and n(NaBH 4 ): n(BiOIO 3 + Bi 2 WO 6 ) = 0.3, Bi 0 /I − -BiOIO 3 /Bi 2 WO 6 has the best photocatalytic activity. Under the optimized reaction conditions (catalyst dosage 1.0 g/L, antibiotic initial concentration 20 mg/L), the degradation efficiency of oxytetracycline (OTC) reached 83.56 % after 60 min reaction under visible light, and its pseudo-first-order reaction rate constant was 0.02431 min −1 , which was 2.56 times and 3.94 times that of pure Bi 2 WO 6 and pure BiOIO 3 , respectively. The characterization results show that the main reasons for the improvement of the activity of Bi 0 /I − -BiOIO 3 /Bi 2 WO 6 are the formation of heterojunction in the catalyst, the surface plasmon resonance (SPR) effect generated by Bi 0 and the impurity energy level introduced by I-doping, which jointly promote the separation of photogenerated electron-hole pairs (e − -h + ) in the catalyst and enhance the absorption capacity of the catalyst to visible light. The intermediates produced during the reaction were analyzed by high performance liquid chromatography-mass spectrometry (HPLC-MS). Two possible pathways for the degradation of OTC by Bi 0 /I − -BiOIO 3 /Bi 2 WO 6 were proposed. Finally, the electron transfer mechanism of Bi 0 /I − -BiOIO 3 /Bi 2 WO 6 all-solid-state Z-scheme heterojunction was proposed based on the test results of Tauc-plot curve and M–S curve.
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
危险品化学品经营许可证（带存储）