Journal of Energy Chemistry
·
2023
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IF 13.1
Yuzhu Qian,Hongrui Wang,Xinni Li,Ting Song,Yong Pei,Li Liu,Bei Long,Xiongwei Wu,Xianyou Wang
The development of insertion-type anodes is the key to designing “rocking chair” zinc-ion batteries. However, there is rare report on high mass loading anode with high performances. Here, {001}-oriented BiOCl nanosheets with Sn doping are proposed as a promising insertion-type anode. The designs of cross-linked CNTs conductive network, {001}-oriented nanosheet , and Sn doping significantly enhance ion/electron transport, proved via experimental tests and theoretical calculations (density of states and diffusion barrier). The H + /Zn 2+ synergistic co-insertion mechanism is proved via ex situ XRD, Raman, XPS, and SEM tests. Accordingly, this optimized electrode delivers a high reversible capacity of 194 mA h g −1 at 0.1 A g −1 with a voltage of ≈0.37 V and an impressive cyclability with 128 mA h g −1 over 2500 cycles at 1 A g −1 . It also shows satisfactory performances at an ultrahigh mass loading of 10 mg cm −2 . Moreover, the Sn-BiOCl//MnO 2 full cell displays a reversible capacity of 85 mA h g −1 at 0.2 A g −1 during cyclic test.
研究领域:
材料科学
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电化学
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能源存储
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DOI
高影响因子
ACS Applied Nano Materials
·
2023
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IF 5.9
Jianlu Zheng,Bin Zhao,Ke Wang,Wenlang Liang,Yongxiang Leng
In this study, we present a facile and eco-friendly method to synthesize hierarchical, flower-like bismuth oxychloride (BiOCl) microstructures with nanoscale features using bile acids (BAs) as directing agents in an aqueous environment at room temperature. The chirality of BAs significantly influenced the helical stacking of nano- and microplates, resulting in the formation of nanosheet flowers with controllable structures and distinct nanoscale characteristics. Time-dependent X-ray diffraction and scanning electron microscopy studies elucidated the growth process of these nanoscale-influenced nanosheet flower structures, which adhered to the Ostwald ripening process. The as-synthesized BiOCl nanosheet flowers, with their unique nanoscale attributes, exhibited superior photocatalytic performance for the degradation of rhodamine B under visible-light irradiation. Moreover, the incorporation of BiOCl nanosheet flowers with nanoscale features into an agarose/chitosan aerogel formed a monolithic shape that offered high efficiency and easy recyclability for wastewater treatment applications. Our work introduces a promising strategy for designing and creating hierarchical nanosheet structures with significant nanoscale properties using biobased materials, with potential applications in photocatalysis and water 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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光催化
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DOI
高影响因子
JOURNAL OF HAZARDOUS MATERIALS
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2012
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IF 4.173
Xin Xiao,Rong Hao,Min Liang,Xiaoxi Zuo,Junmin Nan,Laisheng Li,Weide Zhang
Three-dimensional (3D) BiOI/BiOCl composite microspheres with enhanced visible-light photodegradation activity of bisphenol-A (BPA) are synthesized by a simple, one-pot, template-free, solvothermal method using BiI 3 and BiCl 3 as precursors. These 3D hierarchical microspheres with heterojunction structures are composed of 2D nanosheets and have composition-dependent absorption properties in the ultraviolet and visible light regions. The photocatalytic oxidation of BPA over BiOI/BiOCl composites followed pseudo first-order kinetics according to the Langmuir–Hinshelwood model. The highest photodegradation efficiency of BPA, i.e., nearly 100%, was observed with the BiOI/BiOCl composite (containing 90% BiOI) using a catalyst dosage of 1 g L −1 in the BPA solution ( C 0 = 20 mg L −1 , pH = 7.0) under visible light irradiation for 60 min. Under these conditions, the reaction rate constant was more than 4 and 20 times greater than that of pure BiOI and the commercially available Degussa P25, respectively. The superior photocatalytic activity of this composite catalyst is attributed to the suitable band gap energies and the low recombination rate of the photogenerated electron–hole pairs due to the presence of BiOI/BiOCl heterostructures. Only one intermediate at m / z 151 was observed in the photodegradation process of BPA by liquid chromatography combined with mass spectrometry (LC–MS) analysis, and a simple and hole-predominated photodegradation pathway of BPA was subsequently proposed. Furthermore, this photocatalyst exhibited a high mineralization ratio, high stability and easy separation for recycling use, suggesting that it is a promising photocatalyst for the removal of BPA pollutants.
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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产品关联
DOI
PubMed
高影响因子
NEW JOURNAL OF CHEMISTRY
·
2024
·Vol. 48
·期 26
·11794-11801
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IF 2.7
Mingming Du,Anxian Peng,Hongyue Liu,Qiyun Li,Likai Dai,Zheng Fang,Ganning Zeng,Huimei Chen,Rongjun Yan
The photocatalytic conversion of endless solar energy into storable and usable chemical energy, such as photocatalytic hydrogen peroxide production, is promising and attractive. However, a satisfactory hydrogen peroxide yield has not been achieved using photocatalysts due to the rapid recombination of photoexcited carriers and the rapid decomposition of H2O2. Herein, a polymer polyethyleneimine (PEI)-assisted Pd metal loading BiOCl nanosheet photocatalyst (Pd/PEI/BOC) is designed to achieve higher photocatalytic activity. Experimental results show that compared to the Pd/BOC catalyst with a Pd loading of only 0.26 wt%, the Pd/PEI/BOC catalyst can achieve a higher Pd loading of 0.45 wt%, which is due to the obvious shifting of the isoelectric point (IEP) of BiOCl from the pH value of 4.1 to 8.4 in the presence of PEI, leading to enhanced immobilization. Furthermore, H2O2 decomposed more slowly for the Pd/BOC catalyst modified by PEI. In addition, Pd can significantly enhance the separation of electrons–holes and light absorption range, especially for visible light. Therefore, under simulated sunlight, this Pd/PEI/BOC catalyst displayed a higher H2O2 production ability of 3700.23 μmol g−1 h−1.
研究领域:
材料科学
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化学工程
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环境科学
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纳米技术
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产品关联
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2024
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IF 9.4
En-Ze Deng,Qijie Mo,Yuying Li,Zongwen Mo,Li Zhang,Jiewei Liu
Although Z-scheme heterojunction composites have been widely studied in photocatalysis, in-depth investigation of oxygen vacancies (Ov) in the Z-scheme photocatalysts is still rare. Herein, an oxygen vacancies modified NU-1000/BiOCl-Ov composite with Z-scheme heterojunction was rationally designed and fabricated. The combination of X-ray photoelectron spectroscopy (XPS) and electron paramagnetic resonance (EPR) experiment verified the presence of oxygen vacancies, meanwhile the Z-scheme charge transfer across the heterojunction interface was confirmed in detail by the in situ -XPS, Kelvin probe force microscope (KPFM) studies, ultraviolet photoelectron spectroscopy (UPS), EPR radical capture experiment, as well as density functional theory (DFT) calculation. Importantly, compared to pristine NU-1000 and BiOCl, the optimized NU-1000/BiOCl-Ov composite displayed enhanced photocatalytic performance in the degradation of tetracycline hydrochloride (TCH) under visible light (λ ≥ 400 nm). Theoretical calculations reveal that the oxygen vacancies could induce electron redistribution, facilitating the activation of O 2 and TCH molecules, thereby promoting the photodegradation efficiency. Moreover, mechanism studies suggested that the synergistic effect of oxygen vacancies and Z-scheme heterojunction could facilitate the effective separation of photogenerated carriers. At last, the degradation routes of TCH were proposed and the toxicity of degradation intermediates was assessed. This work underlines the cooperative functions of oxygen vacancies and Z-scheme heterojunction towards improved photocatalytic performance, which offers new perspectives on the design of metal–organic frameworks (MOFs) composites for efficient photocatalysis.
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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产品关联
DOI
PubMed
高影响因子
NEW JOURNAL OF CHEMISTRY
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2022
·Vol. 46
·期 19
·9195-9206
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IF 3.925
Chengming Deng,Haiming Xu,Hailan Qin,Dongsheng Xia,Dongya Li,Qilin Yu,Dahong Chen,Yi Zheng,Yujia Wang
Enhancing the photocatalytic performance via improving the separation efficiency of photo-induced carriers is a promising strategy. Here, a type-II Bi2S3/BiOCl heterostructure was successfully fabricated by an ultrasound method to tackle this issue. The experimental results revealed that BiS/BOC-4 can purified 89% TC-HCl (20 mg L−1, k = 0.0627 min−1) in 30 min, which was 2.6 and 5.5 fold larger than BiOCl (k = 0.0245 min−1) and Bi2S3 (k = 0.0113 min−1), respectively. Moreover, the mechanism behind the improved photocatalytic activity was derived from the good light-utilization efficiency, eminent adsorption ability, and excellent separation efficiency of the carriers induced by the coupling of the oxygen vacancies (OVs) and the interfacial electric field (IEF). Simultaneously, the structure–activity relationship between the photocatalytic performance and the concentration of OVs was established via the response surface methodology. This work not only provides a promising strategy to ameliorate the photocatalytic activity by syngestic vacancy engineering and heterostructure engineering, but also offers a new angle to understand the relationship between defects and the activity.
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
RSC Advances
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2015
·Vol. 5
·期 61
·49598-49605
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IF 3.84
Jianhua Ge,Xuetao Guo,Xin Xu,Pingping Zhang,Jingling Zhu,Jingbo Wang
Flower-like hierarchical BiOCl structures were successfully synthesized in the presence of a eutectic mixture of choline chloride and urea through a solvothermal process. The as-prepared sample was characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS), N2 adsorption–desorption analysis, photo-electrochemical analysis and UV-vis diffuse reflectance spectroscopy (DRS). During the reaction process, the eutectic mixture of choline chloride and urea acted not only as the solvent and the template, but also as a chlorine source for the fabrication of flower-like BiOCl. In addition, the photocatalytic activity toward the degradation of RhB in aqueous solution was also investigated. The results showed that the flower-like BiOCl exhibited enhanced photocatalytic activity for the degradation of RhB under sunlight illumination. Meanwhile, the flower-like BiOCl catalyst performed without obvious decrease in activity after five cycles. Furthermore, the main reactive species in the catalytic oxidation reaction were detected through radical trapping experiments.
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
APPLIED CATALYSIS B-ENVIRONMENTAL
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2025
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IF 21.1
Tong Sun,Kuan Wang,Yuan-Xiao Du,Jian-Gang Chen,Xin-Peng Li,Zhen-Hong He,Xiaodong Hao,Weitao Wang,Huan Wang,Zhao-Tie Liu
The photocatalytic conversion of CO₂ into value-added chemicals using solar energy is a crucial strategy for achieving carbon neutrality. However, existing semiconductor catalyst systems suffer from suboptimal conversion efficiencies due to inefficient charge separation and transfer. The precise modulating surface microenvironment of semiconductor catalyst contributes an effective approach to address these limitations in photocatalytic applications. This study proposes a precise dual-modification strategy to modulate the surface microenvironment by incorporating Co 2+ incorporation and in situ generating Bi sub-nanoclusters in ultrathin BiOCl nanosheets. This approach synergistically establishes spin-polarization effects and interfacial ohmic contacts, while enhancing the intrinsic built-in electric field. Consequently, it drives efficient charge separation and transfer. Mechanistic analyses via theoretical simulations and in situ experiments reveal that the engineered spin polarization facilitates electron transfer through aligned magnetic moments, while the formed ohmic contact eliminates interfacial potential barriers, collectively lowering the energy barrier for CO 2 * and COOH* formation. The optimized 3 %Co-BBOC catalyst demonstrates exceptional CO₂-to-CO conversion performance with a production rate of 58.25 μmol·g −1 ·h −1 , representing a 6.6-fold enhancement over pristine BiOCl. The present work elucidates a dual-functional synergistic mechanism of modulating the surface microenvironment by integrating spin manipulation and interfacial engineering, providing fundamental insights for designing advanced photocatalytic systems with optimized charge transport and surface reaction dynamics.
研究领域:
光催化
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材料科学
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环境科学
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纳米技术
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物理化学
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产品关联
DOI
高影响因子
APPLIED CLAY SCIENCE
·
2017
·
IF 3.101
Chengqun Xu,Feng Long Gu,Honghai Wu
A BiOCl-Mt material assembled from BiOCl and Na-montmorillonite (Na-Mt) was characterized by XRD , FT-IR, TEM, XPS and UV–vis DRS . Na-Mt was clearly demonstrated to be capable of improving BiOCl's photocatalytic performance. The focus was placed on the evaluation of BiOCl-Mt in the terms of photocatalytic activity for cationic Rhodamine B (RhB) and anionic Orange G (OG). Both can be removed more efficiently using BiOCl-Mt compared with pure BiOCl under ultraviolet light irradiation. Although h v b + and O 2 − are the two primary reactive species, the improved photocatalytic degradation performance is primarily attributed to the enhanced separation of photogenerated charge carriers in the catalyst. The Bronsted acidity derived from montmorillonite acid sites and the dissolved oxygen in the solution are capable of promoting dye photocatalysis because they effectively capture the photogenerated electrons. Under optimized conditions, TOC mineralization with rates of 82.3% for RhB and 85.9% for OG was obtained in a BiOCl-Mt catalysed photocatalysis process. The mechanism responsible for the oxidative decomposition of the two different dyes is primarily hole-driven. BiOCl-Mt was stable during the process, with its structures remaining almost unchanged after it was recycled three times. Therefore, BiOCl-Mt will have a promising worldwide application in dye-containing wastewater treatment .
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
CRYSTENGCOMM
·
2025
·
IF 2.6
Huanxia Lin,Wensong Lin,Yeheng Zhang,Ran Gao,Yong He
BiOCl/UiO-66-NH2 photocatalysts were synthesized by a hydrothermal method. BUNH-8 (BiOCl/UiO-66-NH2 composite with 8% UiO-66-NH2) exhibits exceptional photocatalytic performance under visible-light illumination, degrading 92% of rhodamine B (RhB) within 60 minutes, which is 38.16% greater than that of pure BiOCl. The enhanced performance of the BiOCl/UiO-66-NH2 composite photocatalyst can be attributed to the distinct band structure difference between BiOCl and UiO-66-NH2, facilitating effective Z-scheme charge separation and transfer under light irradiation. Superoxide radicals were determined to be the crucial active species in the photocatalytic degradation process via electron paramagnetic resonance (EPR) analysis and a simulated photocatalytic degradation experiment of the dye RhB with scavengers added. Apart from its high efficiency, BUNH-8 demonstrates excellent stability as well. Even after being reused four times, it maintains its excellent photocatalytic performance, suggesting its high potential for application.
研究领域:
材料科学
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环境催化
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光催化
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纳米复合材料
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污染物降解
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产品关联
DOI
高影响因子
INORGANIC CHEMISTRY COMMUNICATIONS
·
2024
·
IF 4.4
Qianqian Chen,Yuancai Lv,Junjie Pan,Weihan Chen,Gengwu Zhou,Xiaobing Yang,Kejun Cheng
Antibiotics, particularly tetracycline (TC), are extensively used in medicine, agriculture, animal husbandry, and the food industry due to their bacteriostatic and antibacterial properties. However, the widespread use of antibiotics has led to serious consequences, particularly in the form of water pollution and the emergence of numerous antibiotic-resistant microorganisms. Therefore, it is essential to implement effective measures to mitigate these environmental impacts. In this paper, we introduce a novel BiOCl@Bi-carbon heterojunction derived from Bi-MOF. The synthesized samples were thoroughly characterized through various techniques. The results demonstrate that BiOCl was successfully synthesized on the surface of Bi-MOF via in situ transformation, and that Bi-MOF was converted into Bi-doped porous carbon (Bi-carbon) after high-temperature annealing treatment. The coupling of BiOCl with Bi-carbon significantly enhances the photocurrent density. The photocatalytic activity of the samples was effectively evaluated by measuring the degradation of TC, with BiOCl@Bi-carbon demonstrating the highest photocatalytic efficiency, achieving a degradation rate of 96.27 % for TC. Additionally, BiOCl@Bi-carbon exhibits excellent stability. Its outstanding photocatalytic performance indicates significant potential for practical applications. Furthermore, we analyze the mechanism underlying the photocatalytic degradation of TC at the end of the study.
研究领域:
环境科学
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材料科学
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化学
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光催化
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DOI
高影响因子
Journal of the Taiwan Institute of Chemical Engineers
·
2021
·
IF 5.876
Jingke Song,Zhe Zhang,Songsong Zhi,Bingxuan Niu,Han Dong,Dapeng Wu,Kai Jiang
Background Development of human society has led to various environmental problems and energy crisis. Methods In this paper, Bismuth oxychloride (BiOCl) with a 3D network structure was prepared via a simple one-step sodium dodecylbenzenesulfonate (SDBS) assisted hydrothermal method and used for CO 2 reduction and antibiotic degradation. Consideration was given to the influence of addition of SDBS in the preparation process on the microscopic morphology and energy band structure of the photocatalyst. Significant findings The results of the present study indicate that the formation of the 3D network structure helps to expose the {001} facets of BiOCl and promotes the generation of more oxygen vacancies. As-prepared BiOCl-0.6, i.e., 0.78 g of Bi(NO 3 ) 3 ·5H 2 O with 0.6 g SDBS, demonstrating the highest photocatalytic reduction performance of CO 2 . The production of CO by BiOCl-0.6 can reach 59.5 and 20.1 µmol g −1 after 4 h of UV-vis/vis illumination, which is ten times higher than the control BiOCl. In addition, BiOCl prepared with a 3D network structure also showed efficient antibiotic (oxytetracycline hydrochloride, OTC) degradation ability. When the initial concentration of OTC was 20 mg/L, OTC was completely removed after 45 min of UV-vis irradiation, and 77.2% of OTC was removed after 90 min of photocatalytic reaction under visible light. In the photodegradation process, photogenerated holes (h + ) and superoxide radical ( · O 2 − ) play an important role.
研究领域:
环境科学
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材料科学
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化学工程
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光催化
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）