ADVANCED FUNCTIONAL MATERIALS
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2024
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IF 18.5
Lulu Zhao,Huilin Hou,Shuo Wang,Lin Wang,Yang Yang,Chris R. Bowen,Jinguo Wang,Ziyi Liao,Dongjiang Yang,Ruifang Yan,Weiyou Yang
Despite the development of a range of photocatalysts for CO 2 reduction, the practical applications are significantly limited by low conversion efficiencies and their reliance on sacrificial agents, which are rooted in thermodynamic and kinetic challenges related to CO 2 conversion. Here, the engineering of Co single atoms in ultrathin single-crystal BiOCl nanosheets for boosted photocatalytic CO 2 reduction is reported. The engineering of Co atoms modulates the distribution of photogenerated charges at the catalyst surface, controlling key surface reaction dynamics and suppressing surface electron-hole recombination. This modulation also improves light absorption and enhances CO 2 adsorption and activation, leading to more efficient surface reactions. Notably, CO 2 is stably adsorbed onto the (001) face of BiOCl through a Bi-O-C(= O)-Co-O coordination unit, which lowers the activation energy for CO 2 reduction and reduces the formation energy of COOH − intermediates. As a result, the BiOCl photocatalysts achieve a CO formation rate of 183.9 µmol g −1 h −1 , when irradiated with a 300 W Xe lamp without cocatalysts or sacrificial agents. It represents an ≈13-fold increase compared to that of pristine BiOCl, and surpasses most reported Bi-based photocatalysts to date. Current work provides valuable insights into engineering of single atoms for developing advanced CO 2 -reduction photocatalysts.
研究领域:
材料科学
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环境科学
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催化化学
✓ 已验证
产品关联
DOI
高影响因子
MATERIALS RESEARCH BULLETIN
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2019
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IF 3.355
Qinyu Zhang,Guanqiong Li,Jie Bai,Ruifang He,Chunping Li
In this work, we successfully synthesized a series of CdS-BiOCl/PAN composites by two-step method including electrospinning process and hydrothermal process. The CdS-BiOCl/PAN composites showed great photocatalytic performance and chemical stability for H 2 production under UV–vis light irradiation due to the synergistic effect among CdS, BiOCl and PAN. Meanwhile, the content of CdS in CdS-BiOCl/PAN composites plays an important role in photo-catalytic abilities. In addition, according to the analysis about the photocatalyst, the possible photocatalytic mechanism and synergistic interaction were further discussed.
研究领域:
材料科学
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环境科学
✓ 已验证
DOI
高影响因子
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
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2015
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IF 1.955
Xiulan Hu,Yanqiu Xu,Haikui Zhu,Fengnan Hua,Shoufeng Zhu
Square-like bismuth oxychloride (BiOCl) nanoplates with high exposed {001} facets were successfully synthesized through a facile hydrothermal process in the presence of sodium citrate . Citric anions reduce BiOCl nanoplate size and lead to high intensity ratio of (001)–(102) by selectively absorbing on the {001} facets of BiOCl nanoparticles or nanoplates. Size of BiOCl nanoplates decrease to about 200 nm when 1.5 mmol sodium citrate was added. Thickness of BiOCl nanoplates also decreases from 100 nm to about 45 nm with increasing sodium citrate amounts. Diffraction peak intensity ratio of (001)–(102) of BiOCl nanopaltes is up to 0.93 with the adding of 1.5 mmol sodium citrate. As-obtained BiOCl nanoplates show a higher photocatalytic activity for degrading methyl orange (MO) than that prepared without sodium citrate under simulated sunlight irradiation.
研究领域:
材料化学
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纳米科学
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光催化
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无机合成
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环境功能材料
✓ 已验证
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
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2021
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IF 5.316
Wendi Huang,Xinyan Xiao,Mingli Lu,Yu Xiao
A novel BiOCl/Bi 5 O 7 I (BOC-BOI) heterojunction was prepared by growing ultrathin 2D BiOCl nanosheets in situ on the surface of 3D Bi 5 O 7 I microspheres . The 2D/3D heterostructure of BOC-BOI composites inhibited the agglomeration of BiOCl nanosheets, and benefited the multiple reflection and refraction of light, which greatly enhanced the absorption and utilization of light. The 50-BOC-BOI composite showed 97.7% degradation efficiency of rhodamine B (RhB) after 70 min Xe light irradiation. And its apparent degradation rate constant ( k ) was 0.0377 min −1 , being 4.9 and 15.1 times than that of pristine BiOCl (0.0077 min −1 ) and Bi 5 O 7 I (0.0025 min −1 ), respectively. The enhanced photocatalytic activity of BOC-BOI composites was attributed to stronger light capture ability, more abundant active sites and higher charge carrier separation efficiency, confirmed by UV-Vis DRS, SEM, TEM, BET, Zeta potential and electrochemical characterizations. The free radical capture experiments showed that the main active species in this system were holes (h + ) and superoxide free radicals (·O 2 − ). Combining the results of UV-Vis DRS and Mott-Schottky test, a reasonable type II heterojunction mechanism was proposed.
研究领域:
材料科学
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环境科学
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Nano Materials
·
2023
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IF 5.9
Fan Wu,Chengwei Zhou,Guoyu Tai,Yang Ma,Xi Yang,Yuwei Pan,Jiangang Han,Weinan Xing,Guangyu Wu
Z-scheme heterojunction photocatalysts with excellent redox capability show great potential in the field of environmental remediation. In this research, ZIF-67 and BiOCl were used to construct metal–organic framework (MOF)-based heterostructures, which effectively achieved 97.4% rhodamine B (RhB) degradation and 78.2% tetracycline (TC) degradation under visible light irradiation. The cyclic experiments displayed that 15% ZIF-67/BiOCl remained structurally stable after 4 cycles. Reactive species trapping demonstrates that 1O2 and ·O2– were mainly responsible for RhB and TC degradation, which were inoculated with EPR results. This work also reveals the degradation path and mechanism of heterojunction, which provides insight into the synthesis of superior photocatalysts for environmental remediation.
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
Journal of Physical Chemistry C
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2024
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IF 3.3
Linjing Hao,Weiqi Zhang,Peng Li,Jing-He Yang,Jie Zhang
TiO2/BiOCl heterojunction photocatalysts were synthesized from different exposed facets (BiOCl(010) and BiOCl(001)). Both heterojunctions had higher photocatalytic activity than their respective components. The favorable energy band shifts constructed an efficient Z-scheme TiO2/BiOCl heterostructure photocatalytic system, which significantly reduced recombination and accelerated the separation rate of photogenerated carriers. Due to the different electrostatic fields inside the crystal planes of BiOCl, electrons migrate from BiOCl to the TiO2 surface through different transport paths, resulting in the charge transport distance of photogenerated electrons in BiOCl(010) being shorter than that in BiOCl(001), and the electron loss was lower. Therefore, TiO2/BiOCl(010) had a higher photocatalytic activity. Besides, the photocatalytic oxidization mechanism was proposed, TiO2/BiOCl(010) oxidizing NOF mainly via photogenerated h+, while TiO2/BiOCl(001) oxidizing NOF through h+ and ·OH. This study contributes to an in-depth understanding of the charge transfer behavior in the TiO2/BiOCl heterojunction structure and provides a reference for the design of efficient heterojunction photocatalysts.
研究领域:
材料科学
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环境科学
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化学工程
✓ 已验证
产品关联
DOI
高影响因子
Journal of Physical Chemistry C
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2013
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IF 4.814
Zhiqiao He,Yuanqiao Shi,Chao Gao,Lina Wen,Jianmeng Chen,Shuang Song
A novel visible-light-active BiOCl/BiVO4 photocatalyst with a p–n heterojunction structure was prepared using a hydrothermal method. The photocatalytic activity of the heterojunction was investigated by monitoring the change in methyl orange (MO) concentration under visible-light irradiation. The results reveal that the composite exhibited markedly improved efficiency for MO photodegradation in comparison with pure BiVO4, BiOCl, and Degussa P25. This is ascribed to the B-type heterojunction structure with a strong oxidative ability and efficient charge separation and transfer across the BiOCl/BiVO4 p–n junction. The highest activity was obtained in the BiOCl/BiVO4 heterojunction using a composite of 13 mol % BiOCl and 87 mol % BiVO4. The removal of MO was mainly initiated by valence-band holes, but dissolved oxygen also played a crucial role in consuming the conduction-band electrons. This was verified by the effects of scavengers and N2 purging.
研究领域:
材料科学
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环境科学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2025
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IF 9.7
Chi Fei,Zaocheng Dong,Houqi Zhou,Ting Xu,Keying Tang,Yilong Fan,Chunyu Chen,Dianchun Ju,Zuoqiao Zhu,Han Ma,Rui Mao
A “waste-to-waste” strategy was adopted by pyrolyzing waste sugarcane bagasse to synthesize biomass-derived carbon (AC) and utilizing diatomite (DTE) as a substrate to construct a high-performance three-dimensional carbon–silica-based bismuth oxychloride (AC-DTE@BiOCl) photocatalyst. The three-dimensional structure effectively prevents the agglomeration of BiOCl while providing additional active sites. Experimental results demonstrate that AC-DTE@BiOCl efficiently degrades 96.2 % of tetracycline hydrochloride (TCH) within 90 min, exhibiting excellent photocatalytic performance. Infrared spectroscopy analysis reveals that the symmetric stretching vibration peak of Si-O (804 cm −1 ) weakens and slightly broadens, while no characteristic peaks of TCH are detected, indicating its complete degradation. Density functional theory (DFT) calculations indicate that the carbonyl site in the TCH molecule exhibits the highest negative electrostatic potential, and O2, O4, O7, N1, O6, and O3 atoms are identified as the primary active sites for radical attack. Furthermore, the photocatalytic degradation of TCH mainly proceeds through hydroxylation, deamination, and ring-opening pathways. These findings provide valuable insights into the rational design and development of high-efficiency and stable photocatalytic materials for environmental remediation applications.
研究领域:
环境科学
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材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
APPLIED SURFACE SCIENCE
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2017
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IF 3.387
Yan Zheng,Xiao Zhang,Jie Zhao,Ping Yang
α-Fe 2 O 3 /BiOCl heterojunctions were synthesized by growing and assembling α-Fe 2 O 3 nanoplates to BiOCl microflowers via a two-step route to enhance the photocatalytic performance of BiOCl. The morphology, microstructure, element composition and optical properties of α-Fe 2 O 3 /BiOCl heterojunctions have been investigated by SEM, TEM, XRD, FT-IR, Raman spectra, XPS, UV–vis diffuse reflectance and PL spectra. Electrostatic interaction was a key to form α-Fe 2 O 3 /BiOCl heterojunctions. Compared with pure BiOCl, the synthesized α-Fe 2 O 3 /BiOCl heterojunctions possess an efficient visible light absorption and exhibit an improved of photocatalytic efficiency. A photocatalytic degradation mechanism has been proposed to explain that the heterojunctions enhance the separation efficiency of electron-hole pairs, and the holes are the main reactive species in the degratation of Rhodamine B.
研究领域:
材料科学
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环境科学
✓ 已验证
产品关联
DOI
高影响因子
ELECTROCHIMICA ACTA
·
2018
·
IF 5.116
Wei Li,Shu-ao He,Wei Xu,Ji Li,Xue-chuan Wang
In this research, a series of BiOCl-Ag/AgBr x (BAA x ) heterojunctions with surface plasmon resonance (SPR) effect of metallic Ag were synthesized by a facile one-pot solvothermal method . For the superior photosensitive effect of AgBr co-catalyst, all BAA x samples exhibited much enhanced response to visible light. For the formation of BiOCl-AgBr heterojunction and existence of metallic Ag plasma, the BAA x photocatalysts exhibited very superior interfacial charge migration, and the recombination of photoexcited electron-hole pairs could be effectively controlled. Research showed that the BAA 0.04 heterojunction exhibited the highest photocatalytic activity under visible light irradiation , and various pollutants in water system could be decomposed effectively. Furthermore, the BAA 0.04 heterojunction possessed very robust photostability, its crystal structure and photocatalytic activity almost remained unchanged after being used several times.
研究领域:
材料科学
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环境科学
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光化学
✓ 已验证
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2013
·
IF 3.473
Jinyan Xiong,Gang Cheng,Fan Qin,Runming Wang,Hongzhe Sun,Rong Chen
A facile polyol-mediated solvothermal method was developed to fabricate BiOCl hierarchical nanostructures (HNs) with controllable morphologies. The obtained BiOCl hierarchical nanostructures were characterized by powder X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), UV–vis diffuse reflection spectroscopy (DRS) and nitrogen adsorption. The BiOCl hierarchical nanostructures (HNs) with ellipsoid-like, sphere-like and flower-like morphologies were constructed of intercrossed nanoflakes or nanosheets. The polyols played significant roles in the fabrication of BiOCl hierarchical nanostructures, which functioned as solvents, reducing and morphology-directing agents. Importantly, the BiOCl hierarchical nanostructures exhibited excellent shape-dependent visible-light-driven photocatalytic activities for Rhodamine B (RhB) degradation, which was much higher than that of 2D BiOCl nanosheets, nanoplates, commercial BiOCl and TiO 2 (anatase). The highly enhanced photocatalytic activities could be ascribed to the contributions of their hierarchical nanostructures, large BET surface areas, strong adsorption capacities and superhydrophilic properties.
研究领域:
材料科学
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环境科学
✓ 已验证
产品关联
DOI
高影响因子
INTEGRATED FERROELECTRICS
·
2022
·
IF 0.836
Jialong Tian,Wenhui Yu,Yan Zhuo,Yujin Chen,Zhenming Qi,Shuiping Liu,Chuanfeng Zang,Jinmei Wang,Chunxia Wang
Bismuth nitrate pentahydrate and sodium chloride were used as raw materials to prepare BiOCl photocatalyst at different pH values by a hydrothermal method. Polyester fabric was treated by plasma and then finished by BiOCl at different concentrations. BiOCl and BiOCl finished polyester fabric were characterized by XRD, SEM, EDS and DRS. The photocatalytic property of BiOCl and the self-cleaning activity of polyester fabric were tested. The degradation rate of rhodamine B in the presence of BiOCl prepared under acidic condition was as high as 98.3%. The self-cleaning effect and UV resistance of BiOCl finished polyester fabrics were significantly better than those of polyester fabric, and increased with the increase of BiOCl concentration. The tensile property did not change significantly.
研究领域:
材料科学
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纺织工程
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环境科学
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）