Materials Today Bio
·
2022
·
IF 10.761
Weizhou Ren,Zefeng Lin,Youzhun Fan,Jun Xing,Guangyu Liu,Taizhong Xiao,Zhengao Wang,Zhengnan Zhou,Tao Zhang,Zhiguo Song,Peng Yu,Chengyun Ning
Recurrent bacterial infection is a major problem that threatens the tissue repair process. However, most current therapeutic strategies fail to deal with management of the overlap dynamics of bacterial killing and tissue repair. Here, in accord with the different responses of eukaryotic and prokaryotic cells to electric potential, we developed high performance photoelectric BiOCl nanosheets that dynamically switch between conditions that favor either tissue regrowth or antibacterial microenvironments due to light stimulated and bi-modal switching of their surface electrical polarization. In vitro assays demonstrate that, under light illumination, the mannitol modified BiOCl nanosheets show high relative surface potential and achieve robust antibacterial performance. Conversely, under dark conditions, the nanosheets exhibit relatively low surface potential and promote Bone Marrow Stem Cell (BMSCs) proliferation. In vivo studies indicate that BiOCl nanosheets with light switch capabilities promote the significant regeneration of infected skin wounds. This work offers a new insight into treating recurrent bacterial infections with photoelectric biomaterials for light controlled selection of alternative electrical microenvironments, thereby benefiting the capability for either antisepsis or repair of damaged tissues.
研究领域:
生物医学工程
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材料科学
·
微生物学
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DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2022
·
IF 16.744
Runren Jiang,Guanghua Lu,Tianjian Dang,Min Wang,Jianchao Liu,Zhenhua Yan,Haijiao Xie
The use of photocatalysis to remove pharmaceuticals and personal care products (PPCPs) is emerging as a promising method, but few studies have investigated the simultaneous degradation of multiple PPCPs. Here, we constructed a hydrogen-bonded bridged MIL-101(Cr)–NH 2 /BiOCl-OH (MCN/BOCH) system to degrade sulfamethoxazole and ethyl p-aminobenzoate alone or in combination. The MCN/BOCH system effectively removed two PPCPs under visible light and exerted a synergistic effect on degrading the combined pollutants. Meanwhile, the degradation products of the mixture changed significantly compared with that of a single pollutant, and the toxicity of the composite pollutants was significantly reduced through the combined effect of synergistic degradation. The bridging of hydrogen bonds effectively accelerated charge transfer at the heterojunction interface under visible light. Moreover, the separated redox side of the MCN/BOCH heterojunction system and the electron donor and acceptor effect of the two PPCPs significantly enhanced the synergistic photocatalytic degradation performance. This work might be useful for controllable designs of hydrogen-bonded photocatalysts for the treatment of complex PPCP pollution.
研究领域:
环境科学
·
材料科学
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DOI
高影响因子
Catalysts
·
2017
·Vol. 7
·期 5
·131
·
IF 3.082
Xiaowei Liu,Lili Wang,Zhe Sun,Yu Shao,Tingchao Yu
Bromate (BrO3−) contamination in drinking water is a growing concern. Advanced reduction processes (ARPs) are reportedly promising in relieving this concern. In this work, UV/superparamagnetic BiOCl (BiOCl loaded onto superparamagnetic hydroxyapatite) assisted with small molecule carboxylic acid (formate, citrate, and acetate), a carboxyl anion radical (CO2•−)-based ARP, was proposed to eliminate aqueousBrO3−. Formate and citrate were found to be idealCO2•−precursor, and the latter was found to be safe for practical use.BrO3−(10 μg·L−1, WHO guideline for drinking water) can be completely degraded within 3 min under oxygen-free conditions. In this process,BrO3−degradation was realized by the reduction ofCO2•−(major role) and formyloxyl radical (minor role) in bulk solution. The formation mechanism of radicals and the transformation pathway ofBrO3−were proposed based on data on electron paramagnetic resonance monitoring, competitive kinetics, and degradation product analysis. The process provided a sustainable decontamination performance (<5% deterioration for 10 cycles) and appeared to be more resistant to common electron acceptors (O2,NO3−, and Fe3+) than hydrated electron based-ARPs. Phosphate based-superparamagnetic hydroxyapatite, used to support BiOCl in this work, was believed to be applicable for resolving the recycling problem of other metal-containing catalyst.Keywords:bromate;carboxyl anion radical;reduction;magnetic recovering
研究领域:
环境科学
·
水处理工程
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DOI
高影响因子
RSC Advances
·
2015
·Vol. 5
·期 129
·107088-107097
·
IF 3.84
Hui Meng,Tingting Wang,Xiang Yu,Yi Zhu,Yuanming Zhang
The doping effect of a new dopant to BiOCl as photocatalyst is studied. SnS2 as a narrow-band-gap semiconductor is used to tune the electronic and band structure of wide-band-gap BiOCl. BiOCl/SnS2 hollow spheres are synthesized by a facile and economic one-pot hydrothermal method. The shell of the hollow spheres is composed by BiOCl and SnS2, but the outermost layer is BiOCl. BiOCl/SnS2 hollow spheres exhibit much higher photocatalytic activity than pure SnS2 and BiOCl in the degradation of rhodamine-B under visible light and sun-light irradiation. The improvement is explained by the band structure tuning effect by SnS2 and the morphological benefits of the hollow sphere structure.
研究领域:
材料科学
·
环境工程
·
物理化学
·
纳米科技
·
光催化
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DOI
高影响因子
LANGMUIR
·
2023
·
IF 3.9
Shuyan Qi,Ling Guan,Ruiyan Zhang,Shanqiang Wu,Kaiyao Zhang
BiOCl/Bi2Fe4O9 photocatalyst was prepared by a coprecipitation–hydrothermal method. The heterojunction structure generated by the composite of BiOCl and Bi2Fe4O9 reduced the electron–hole recombination efficiency and improved the degradation rate of RhB. At 240 min, 20% BiOCl/Bi2Fe4O9 represented the excellent degradation effect on 10 mg/L RhB; the degradation efficiency reached 99.56%; and the reaction rate constant was 0.01534 min–1, which was 5.76 times and 6.06 times that of Bi2Fe4O9 and BiOCl, respectively. The main active substance of the photocatalytic degradation of dyes was superoxide radical O2–·. Five cycles of the experiment proved the relative stability of BiOCl/Bi2Fe4O9.
研究领域:
材料科学
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环境化学
·
光催化
✓ 已验证
DOI
高影响因子
Molecular Catalysis
·
2026
·
IF 4.3
Rongrong Li,Wenbin Huang,Tianyu Bai,Fan Shao,Jingxiao Sun,Shixuan Guo,Qiang Wei,Yasong Zhou
Preparation of BiOCl with abundant active sites via PVP-assisted aqueous/solvothermal method and Its application in photocatalytic CO 2 reduction. • Increased active site facilitates CO 2 adsorption and activation. • The mechanism of action of EG and PVP in the BiOCl crystal growth process has been proposed. Photocatalytic CO₂ conversion represents a promising green approach to mitigate carbon emissions, yet the fast recombination of photogenerated charge carriers severely restricts the catalytic efficiency of conventional photocatalysts. Rational surface and crystal engineering is therefore essential to address this issue. In this work, we report a facile solvothermal synthesis of BiOCl with enriched active sites, where EG and PVP act as co-regulators for crystal growth. The two additives sequentially coordinate with Bi³⁺, and the stronger competitive adsorption of PVP, together with the modulation effect of EG, collaboratively decreases grain size and drives the preferential exposure of catalytically favorable (110) facets. Spectroscopic characterizations confirm the surface functionalization by PVP. Benefiting from the optimized structure, the as-prepared BiOCl delivers a 1.6-fold increase in CO generation rate. More importantly, we establish the molecular-level synergistic mechanism of EG and PVP for (110) facet regulation, and clarify the underlying mechanism of photocatalytic CO 2 reduction over the as-obtained material. The synergistic effect of PVP and EG promotes the exposure of highly active crystal planes on the BiOCl surface. Simultaneously, PVP modification of BiOCl increases the surface charge density, collectively enhancing photocatalytic activity. Download: Download high-res image (189KB) Download: Download full-size image
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产品关联
DOI
高影响因子
Advanced Composites and Hybrid Materials
·
2026
·Vol. 9
·期 1
·69
·
IF 15.5
Qin Mingli,He Mingqi,Hou Jiahui,Zhang Ruijun,Ai Jiale,Lao Xuanhao,Zhao Yiming,Kuklin Artem V.,Ågren Hans,Gao Lingfeng,Huang Youju
Bismuth oxychloride (BiOCl) has been prevalently applied in UV-photodetection due to its wide band gap. However, further application is hindered by its low light utilization efficiency and fast carrier recombination. In this work, a 2D-2D Ti 3 CN@BiOCl heterojunction was constructed to broaden the light absorption and increase the carrier mobility. A small amount of hole scavengers was utilized to suppress the carrier recombination. According to DFT calculations, the electron transfer occurs from MXene to BiOCl and is subsequently converted into an electrical signal. The photo-response performance of Ti 3 CN@BiOCl was systematically investigated, where an optimized photocurrent density as high as 47.17 µA∙cm − 2 and a photoresponsivity of 12.50 mA/W could be achieved. Furthermore, Ti 3 CN@BiOCl was found to exhibit a broad-band and fast response (~ 0.04 s), and excellent long-term stability (~ 0.005% decrement for each cycle). This work highlights promising prospects of Ti 3 CN@BiOCl heterojunctions for use in photodetection, which also hold great potential for other types of optoelectronic devices.
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DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2022
·
IF 16.744
Hailan Qin,Jingyu Sun,Dongsheng Xia,Haiming Xu,Qilin Yu,Yi Zheng,Yintao Shi
Boosting nonradical ( 1 O 2 , e − and h + ) process to enhance the selective degradation for electrophilicity contaminants is an ingenious strategy. Herein, BiOI/BiOCl heterojunction with rational interface oxygen vacancies (IOVs) concentration was successfully synthesized by ultrasonic method. Moreover, multi-characterization and interference experimental unveiled that the appropriate IOVs concentration can not only effectively reduce the transport resistance of photo-induced carriers but also boost the nonradical process. Thus, BOC-5 can remove 84% (20 mg/L) tetracycline hydrochloride (TC-HCl) in 1 h and present wonderful insecticidal performance for rotifers. Simultaneously, the quantitative methods of IOVs concentration, the contribution of the active species to the catalytic performance and the contribution of different 1 O 2 source to the total 1 O 2 were established for the first time. Furthermore, the structure–activity relationship between the IOVs concentration and the catalytic properties was firstly constructed. This work provides an inventive idea to purify water pollutants and disinfestation by boost nonradical process via interface defect engineering.
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
Advanced Healthcare Materials
·
2022
·Vol. 12
·期 2
·2201565
·
IF 11.092
Zhekun Zhang,Juning Xie,Jun Xing,Changhao Li,Tak Man Wong,Hui Yu,Yuanxing Li,Fabang Yang,Yu Tian,Huan Zhang,Wei Li,Chengyun Ning,Xiaolan Wang,Peng Yu
Developing an ideal wound dressing that not only accelerates wound healing but also eliminates potential bacterial infections remains a difficult balancing act. This work reports the design of a light-programmable sodium alginate nanocomposite hydrogel loaded with BiOCl/polypyrrole (BOC/PPy) nanosheets for state-switchable wound healing promotion and bacterial infection elimination remotely. The nanocomposite hydrogel possesses programmable photoelectric or photothermal conversion due to the expanded light absorption range, optimized electron transmission interface, promoted photo-generated charge separation, and transfer of the BOC/PPy nanosheets. Under white light irradiation state, the nanocomposite hydrogel induces human umbilical vein endothelial cells migration and angiogenesis, and accelerates the healing efficiency of mouse skin in vivo. Under near-infrared light irradiation state, the nanocomposite hydrogel presents superior antibacterial capability in vitro, and reaches an antibacterial rate of 99.1% for Staphylococcus aureus infected skin wound in vivo. This light-programmable nanocomposite hydrogel provides an on-demand resolution of biological state-switching to balance wound healing and elimination of bacterial infection.
研究领域:
生物材料学
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医学工程
·
纳米医学
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产品关联
DOI
PubMed
高影响因子
ChemCatChem
·
2022
·Vol. 14
·期 7
·e202101958
·
IF 5.497
Yusheng Luo,Zhili Chi,Jinlong Zhang,Baozhu Tian
Graphical Facets : We first exploited a facet-heterojunction-based photothermocatalytic material CdS−Au-{001}BiOCl{110}-MnO x by respectively depositing CdS−Au on the {001} facets and MnO x on {110} facets of BiOCl nanosheets. This material exhibited excellent activity for toluene oxidation and ∼100 % selectivity from toluene to CO 2 under full-spectrum sunlight irradiation. There is a synergistic effect between photocatalysis and thermocatalysis. It is very essential to improve the activity and selectivity of photothermocatalysis (PTC) by tailoring the microstructures of photothermocatalytic materials. Herein, we exploit a facet-heterojunction strategy to fabricate photothermocatalysts, by which CdS−Au-{001}BiOCl{110}-MnO x is constructed by respectively depositing CdS−Au on the {001} facets and MnO x on {110} facets of BiOCl nanosheets. This material exhibits excellent activity for toluene oxidation and near 100 % selectivity from toluene to carbon dioxide under full-spectrum sunlight irradiation. The conversion rate of toluene under PTC condition is significantly enhanced by 47.5, 1.8 and 1.7 times compared with that of sole PC, TC and the sum of TC and PC. There is a synergistic effect between photocatalysis and thermocatalysis, in which the S-scheme photocatalyst CdS−Au-{001}BiOCl produces high-energy active species to activate toluene and accelerate the cycle conversion of lattice oxygen and oxygen vacancy in MnO x .
研究领域:
材料科学
·
环境科学
·
化学工程
✓ 已验证
DOI
高影响因子
Reaction Kinetics Mechanisms and Catalysis
·
2025
·
IF 1.7
Wang Wenxue,Zhan Su,Liu Canwen,Zhou Lin,Zhou Feng
To address the issue of high electron–hole recombination rate in conventional catalysts used for the photocatalytic treatment of ballast water, this work designed and synthesized a Bi 2 Sn 2 O 7 /BiOCl heterojunction photocatalyst via a simple hydrothermal method. After 30 min of simulated sunlight irradiation, it exhibited outstanding inactivation efficiency against marine bacteria. The Bi 2 Sn 2 O 7 /BiOCl-0.6 heterojunction achieved an inactivation efficiency of up to 92%, 2.4 times higher than that of pure Bi 2 Sn 2 O 7 . Performance experiments and electrochemical analysis demonstrate that the heterojunction optimizes electron transfer pathways, enhances electron–hole separation efficiency, and promotes the generation of hydroxyl radicals, thereby significantly improving photocatalytic performance. This study offers novel insights for developing highly efficient photocatalytic ballast water treatment materials suitable for complex marine environments. Graphical abstract
研究领域:
环境科学
·
材料化学
·
光催化
·
海洋环境工程
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产品关联
DOI
高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2026
·
IF 19.9
Jun Xu,Kejie Guan,Fuqin Sun,Yingyi Wang,Xiaoshuang Gou,Lin Liu,Yang Xia,Weifan Zhou,Cheng Zhang,Ting Zhang,Xiaowei Wang
High-κ dielectric materials are pivotal for next-generation two-dimensional (2D) electronics. However, integrating high-κ dielectrics with 2D semiconductors remains challenging in terms of simultaneously achieving superior dielectric properties and high-quality interfaces. Here, we demonstrate that ultrathin bismuth oxychloride (BiOCl) crystals grown by chemical vapor deposition (CVD) can serve as excellent gate dielectrics, showing a high dielectric constant (>40) and a wide bandgap (∼3.9 eV). Remarkably, the CVD growth mode of BiOCl can be regulated from horizontal to vertical orientation by tuning nucleation rates, enabling residue-free dry transfer for pristine device integration. Top-gated BiOCl/MoS 2 field-effect transistors exhibit a high on/off ratio exceeding 10 8 , a near-ideal subthreshold swing of 61.2 mV/dec, minimal gate leakage currents of 10 −8 A/cm 2 , and nearly zero hysteresis. This reliable approach to integrating ultrathin single-crystalline high-κ dielectrics paves the way for realizing the full theoretical performance of 2D electronics.
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产品关联
DOI
高影响因子
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