COLLOIDS AND SURFACES B-BIOINTERFACES
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2022
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IF 5.999
Shouning Yang,Shengkun Wang,Yanmin Zhang,Yijing Wang,Jinhong Yuan,Yuqin Jiang,Xing He,Lihong Liu,Jian Song,Liang Chen,Huayan Yang
Mitochondria-targeted phototherapy, especially combined photothermal therapy (PTT) and photodynamic therapy (PDT), has been regarded as an attractive strategy for the treatment of tumor. In this study, a facile approach to prepare two-dimensional (2D) BiOCl-Bi 2 S 3 nanostructures was developed, where Bi 2 S 3 quantum dots were doped in/on the ultrathin BiOCl nanosheets , forming a p-n heterojunction . The BiOCl-Bi 2 S 3 shows favorable photothermal conversion efficiency (32%) and synergistically reactive oxygen species (ROS) generating capability under near-infrared (NIR) irradiation. Moreover, the conjugation of synthetic targeting ligand to the surface of BiOCl-Bi 2 S 3 endows the heterojunction effective tumor targeting ability and selective mitochondrial accumulation. The combined cancer targeting ability and synergistic PTT/PDT permit enhanced cooperative phototherapeutic efficiency of the 2D heterojunction. This study provides an attractive way for designing new class of heterostructure materials for potential applications in subcellular-targeted phototherapy.
研究领域:
生物医学工程
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肿瘤学
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纳米医学
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产品关联
DOI
PubMed
高影响因子
ACS Applied Materials & Interfaces
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2024
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IF 8.3
Xinmiao Nie,Xue Zhong,Fan Yang,Rongguo Wang,Xiaodong He,Wenbo Liu
Real-time detection of harmful gases at room temperature has become a serious problem in public health and environmental monitoring. Two-dimensional materials with semiconductor properties BiOCl is a promising gas-sensitive material due to its large specific surface area and adjustable band gap as well as outstanding safety characteristics. However, limited by the weak gas adsorption sites and sluggish charge-transfer ability, the performance of BiOCl could not be fully exploited. Oxygen vacancy (Vo) engineering can introduce lattice defects, thereby significantly increasing the local charge density and enhancing the adsorption of gases, which is an effective strategy to enhance the gas-sensing performance. In this work, we composite BiOCl with a vacancy (Vo-BiOCl) and reduced graphene oxide (rGO) to construct a Vo-BiOCl/rGO heterostructure with enhanced gas adsorption sites. Experimental and theoretical calculations show that Vo can enhance the adsorption of gases and the introduction of rGO forms a high-quality heterostructure with BiOCl, which can effectively reduce the band gap of BiOCl and promote electron transfer, thereby improving the sensitivity of the sensor. Benefiting from above, Vo-BiOCl/rGO achieves the ability to detect low concentrations of NO2/NH3 at room temperature, with high sensitivity (55% at 1 ppm of NO2 and −28% at 1 ppm of NH3), fast response time (40 s at 1 ppm of NO2 and 2 s at 1 ppm of NH3), good stability (over 150 days), and fully recoverable gas sensitivity.
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
JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2025
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IF 9.7
Zeping Rao,Yan Yan,Wei Cai,Rong Wang,Zhenhua Wang,Fei Long,Yilong Ma,Chunlin Fu
Constructing ferroelectric hetrojuction and utilizing its piezo-photocatalytic performances is a promising approach for environmental remediation and sustainable energy conversion. However, challenges such as electron-hole recombination and interfacial instability limit the performance of piezoelectric heterojunction photocatalysts. In this study, a novel sandwich-structured heterojunction with a lattice-matched interface constructed by Sr 2 Bi 4 Ti 5 O 18 (SBTO) bismuth Aurivillius phase ferroelectric material and BiOCl (BOC) was developed via a selective etching strategy. This approach minimizes interfacial defects and stress, while ferroelectric polarization modulates charge distribution, enhancing redox activity. Finite element simulations and experimental results demonstrate that the SBTO/BOC heterojunction leverages intrinsic and interfacial electric fields to form dual electron transport pathways, significantly improving charge separation in both bulk and interface regions. The optimized SBTO/BOC heterojunction achieves a piezo-photocatalytic degradation rate of 0.285 min −1 for Rhodamine B, approximately twice that of Sr 2 Bi 4 Ti 5 O 18 under piezo-photocatalysis (0.147 min −1 ) and 13 times higher than photocatalysis alone (0.022 min −1 ). The heterostructure also efficiently degrades dyes, antibiotics, and Cr(VI), offering a robust design for high-performance piezo-photocatalytic systems.
研究领域:
材料科学
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环境科学
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能源科学
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产品关联
DOI
PubMed
高影响因子
CHEMOSPHERE
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2019
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IF 5.108
Runren Jiang,Donghai Wu,Guanghua Lu,Zhenhua Yan,Jianchao Liu
Broadening the range of light absorption and inhibiting charge carrier's recombination are vital to improving photocatalytic activity. In this study, a novel full spectrum light-driven carbon quantum dots (CQDs) modified 2D-2D ZnIn 2 S 4 /BiOCl van der Waals (VDW) heterostructures were prepared by a facile hydrothermal method. It exhibits remarkable degradation efficiency for removing various antibiotics from water (i.e. tetracycline (TC), ciprofloxacin (CIP) and oxytetracycline (OTC) under visible and near-infrared (NIR) light. The enhancement of photocatalytic performance is due to the 2D-2D VDW heterostructures and CQDs not only accelerate the interfacial charge separation and transfer but also provide massive reactive canters to facilitate degradation reaction. Besides, the optical absorption capacity of CQDs modified 2D-2D ZnIn 2 S 4 /BiOCl VDW heterostructures are obviously enhanced because of the up-conversion photoluminescence (UC-PL) properties of CQDs. Furthermore, the degradation process of TC is assessed by three-dimensional excitation-emission matrix (3D-EEMs) and liquid chromatography-tandem mass (LC-MS/MS) spectrometry analysis. Active species trapping experiments and electron spin resonance (ESR) testify that O 2 − , OH, and holes play a crucial part in the photocatalytic degradation process. This work affords a new promising approach for CQDs modified 2D/2D VDW heterojunction with enhanced photoactivity in organic pollutant degradation for full spectrum light utilization.
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
CHEMICAL ENGINEERING JOURNAL
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2021
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IF 13.273
Lebao Mao,Hao Liu,Linli Yao,Wei Wen,Miao-Miao Chen,Xiuhua Zhang,Shengfu Wang
Aflatoxin B1 (AFB1) exposure often causes serious food safety problems and illnesses in humans and animals even at extremely low content. Therefore, ultrasensitive detection and effective degradation of AFB1 is vitally significant. Photoelectrochemical (PEC) approach has been widely applied in sensing and catalysis fields. For achieving robust PEC performance, exploring highly photoactive semiconductor materials is critical. Herein, we constructed a novel and dual-functional copper oxide/bismuth oxychloride (CuO/BiOCl) composite by in-situ growth of CuO on BiOCl surface. The photo-absorption region of CuO/BiOCl was efficaciously broadened from UV to visible range, making for enhanced light harvest. Meanwhile, the p-n heterostructure in CuO/BiOCl clarified that the formed built-in internal electric field could accelerate band-band transfer of carriers. Driven by this, PEC response of CuO/BiOCl was greatly boosted comparing with that of pure CuO or BiOCl. Further combing with the specific aptamer, a favorable CuO/BiOCl-based PEC biosensor was fabricated for AFB1 detection with ultra-sensitivity (detection limit of 0.07 pg mL −1 ) and satisfactory recoveries (96.4% ∼ 105.7%) in real maize samples. Subsequently, under light irradiation and suitable bias voltage, a degradation rate of ∼81.3% was facilely attained for 5.0 µg mL −1 AFB1, indicating excellent photoelectrocatalytic activity of CuO/BiOCl material. The catalytic mechanism and the main product of AFB1 degradation were analyzed. Taken together, the heterostructured CuO/BiOCl-based PEC assay provides a potential way for monitoring and controlling the AFB1 contamination in the food security areas.
研究领域:
食品安全
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分析化学
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环境科学
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DOI
高影响因子
APPLIED CATALYSIS B-ENVIRONMENTAL
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2024
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IF 20.2
Yandong Sun,Weiguang Han,Fangyuan Zhang,Hui Li,Ziqi Zhang,Xue Zhang,Boxiong Shen,Sheng-Qi Guo,Tianyi Ma
The generation of singlet oxygen ( 1 O 2 ) based on photocatalytic activation O 2 is considered to have important application prospects in purifying refractory organic pollutants in water. However, the uncertain dual pathway transformation of activated O 2 severely limits the generation of 1 O 2 . In this work, we show a robust BiOCl with dual defects (adjacent I-substitution defect and Cl vacancy) in halogen layer for the selective activation of O 2 to generate 1 O 2 . Combining experiments and theoretical calculations, we confirm that dual defects are beneficial in optimizing band structures, improving carrier separation efficiency, and promoting O 2 adsorption and activation. More importantly, it is confirmed that dual defects can directionally convert O 2 into 1 O 2 by increasing the thermodynamic conversion energy barrier of non- 1 O 2 conversion pathways and serving as a necessary site for 1 O 2 generation with dual functions of oxidation and reduction. Applying dual defect modified BiOCl to the removal of refractory aromatic pollutants in water, it is found that it has efficient and stable photocatalytic degradation efficiency and broad environmental adaptability. This work not only provides in-depth insights into the mechanism of photocatalytic activation of O 2 to selective produce 1 O 2 , but also lays the foundation for further development of highly active photocatalysts for environmental remediation and energy conversion.
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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DOI
高影响因子
JOURNAL OF ENVIRONMENTAL MANAGEMENT
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2025
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IF 8.4
Mengyang Cui,Jiaqing Xu,Jinrui Li,Yimeng Fan,Cuijiao Mao,Jianhui Sun,Xianfa Su,Yunqing Pi,Shuying Dong
Interfacial solar water evaporation technology holds great promise for resource recovery and wastewater purification. In this study, diatomite/polyaniline-BiOCl functionalized hierarchical composite membranes (DpM/PANI-BiOCl) with efficient photothermal water evaporation and pollutant degradation performance were synthesized via a simple in situ hydrolysis method. The composite membrane features a three-dimensional porous polyurethane sponge filled with diatomite as the bottom water transport layer, followed by layer-by-layer loading of polyaniline (photothermal layer) and BiOCl (photocatalytic layer). This design enables the efficient synergy of water transport, photothermal conversion and photocatalytic degradation. Under one-sun irradiation, the optimized DpM/PANI-BiOCl functionalized hierarchical composite membrane achieved an evaporation rate of up to 1.11 kg/m 2 /h while removing 95.9 % of rhodamine B (RhB) from bulk water. After 3 cycles of stability testing, its pollutant removal rate remained above 80 %. Furthermore, the composite membrane exhibited excellent photocatalytic performance across different pollutant concentrations, with degradation rates of 90 % for methylene blue (MB) and 91.2 % for methyl orange (MO). These results highlight the importance of the functionalized hierarchical design in facilitating the photocatalytic pollutant degradation and enabling efficient, sustainable clean water extraction from wastewater.
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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纳米技术
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光催化
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水处理技术
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产品关联
DOI
PubMed
高影响因子
SOLID STATE SCIENCES
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2019
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IF 2.155
Yunfang Huang,Hui Xu,Dan Luo,Yuezhu Zhao,Yu Fang,Yuelin Wei,Leqing Fan,Jihuai Wu
Full-spectrum-responsive Ag/Bi/BiOCl hierarchical micro-flower heterojunction via a facile in-situ solvothermal route. The samples were characterized by XRD , SEM, TEM , XPS , BET and UV–Vis–NIR. The in-situ incorporation of Bi into the semiconductor BiOCl nanosheets with oxygen vacancies could be regulated efficiently by the Ag + additive content. The samples presented a strong optical absorption in the whole region of 200–2400 nm and displayed excellent photocatalytic performance over the full solar spectrum. The presence of metallic Ag, Bi and oxygen vacancies strengthened the light absorption and promoted the charge-carrier separation of BiOCl, resulted in higher photocatalytic activity than that of pure BiOCl and P25 under UV and visible light irradiation. Furthermore, the photocatalytic responsiveness of Ag/Bi/BiOCl was successfully extended to the NIR region. On the basis of the radical species trapping experiments, h + , •O 2 − , and •OH were confirmed to be the mainly active species involved in the degradation of organic pollutants in the NIR region.
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 ALLOYS AND COMPOUNDS
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2018
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IF 3.779
Wenwen Liu,Donglin Zhong,Zhiqiang Dai,Yi Liu,Juan Wang,Ziyu Wang,Jun Pan
Photoabsorption and surface property of semiconductor are two key factors to determine its photocatalytic performance. In this work, BiOCl-Bi 2 S 3 composites composed of Bi 2 S 3 nanoparticles bonded on BiOCl nanoplates enclosed with {001} and {110} crystal facets were synthesized through an in-situ ion exchange method at room temperature. The transformed Bi 2 S 3 made BiOCl-Bi 2 S 3 composites efficient visible light absorption, ensuring the quantity of photoinduced carriers as well as intimate crystalline-amorphous contact interface to benefit the separation of photoinduced carriers. Moreover, BiOCl nanoplates enclosed with {001} and {110} crystal facets can convenient transfer carriers to {001} crystal facets. The photocatalytic performance of BiOCl-Bi 2 S 3 composites was evaluated by the methylene blue photodegradation under visible light irradiation and the results indicate that BiOCl-Bi 2 S 3 composites have good photocatalytic ability due to enhanced light absorption, efficient separation and transfer of carriers. Based on the active species trapping experiments, transient photocurrents, electrochemical impedance spectroscopy and energy band structure , a possible photocatalytic mechanism of methylene blue over the BiOCl-Bi 2 S 3 composites 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
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2022
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IF 5.518
Meng Zhang,Pengfei Wang,Mingyuan Wu,Qingyun Wu,Jianjun Yang,Jiuyi Liu,Jianan Zhang
In the current research, we are committed to solving the irreconcilable contradiction between fragmentation, agglomeration, poor size controllability, and high solid content in the preparation of BiOCl crystals. Water soluble block polymer polyethylene glycol monomethyl ether-b-polydimethylaminoethyl methacrylate (mPEG-b-PDMAEMA) was synthesized as dispersant to achieve high solid content by reducing the frequency of crystal collisions to avoid crystal fragments and agglomerates. With the reaction temperature of 80 °C, urea dosage of 40 g, bismuth salt solution addition rate of 0.45 ml/min, and variable amount of pre-added HCl in the reaction vessel, fragment-free BiOCl crystals of wide size ranges were successfully obtained with record-high solid content of above 10 wt%. Furthermore, bio-based pearlescent coatings were prepared by using as-synthesized BiOCl crystals as pearlescent pigments and polyglyceryl tetrastearate and polyphenyl polymethylene polyisocyanate (PAPI) as the formulations of two-component solvent free polyurethane . The decorative polyurethane coatings demonstrated excellent physical properties and corrosion resistance , which exhibited eye-catching gloss effects from pearl luster, glitter pearl luster, to shimmering luster derived from the size variation of 20, 50, and 70 µm, respectively. The large-scaled production of size controllable BiOCl crystals with high solid content in wide size range promises the practical applications in decorative coatings, cosmetics, clothing accessories, and car interior accessories.
研究领域:
材料科学
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化学工程
✓ 已验证
产品关联
DOI
高影响因子
APPLIED SURFACE SCIENCE
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2021
·
IF 6.707
Jinyan Cao,Yue Jing,Zhongxing Du,Wei Chu,Jianjun Li,Wanglai Cen
A novel n-n type WC/BiOCl binary photocatalyst was synthesized, and applied to sulfamethoxazole (SMX) degradation. The physical and photoelectric properties of the WC/BiOCl were characterized by various experimental and calculational methods. An intimate interfacial contact between WC and BiOCl was identified, which help to reduce the aggregation of BiOCl and more importantly, build an internal electrical field between WC and BiOCl. It is interesting to find that the WC layer(s) can help to reduce the interfacial charge transfer resistance and act as electron transfer and storage sites. Subsequently, the holes are engaged in the oxidation of SMX by WC/BiOCl. Additionally, WC/BiOCl photocatalyst has more reactive sites and absorbs more incident photons compared with pure BiOCl. Quenching and electron spin resonance (ESR) experiments indicate that O 2 ·- is the main active species, holes and OH • are also involved. The degradation pathway of SMX and the enhancing mechanism for the photodegradation through the combination of WC and BiOCl were explored. This work provides a novel binary photocatalyst for SMX degradation.
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
Chemical Engineering Journal Advances
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2024
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IF 5.5
Zheng Luo,C.P. Leo,Fengbo Guo,Xin-ya Zhao
Photocatalysts offer sustainable treatment of water pollutants using light and they can be further piezoelectrically enhanced. As a highly efficient, stable, and environmentally friendly photocatalytic material, bismuth oxychloride (BiOCl) exhibits significant advantages in the degradation of rhodamine B, but its morphology can be easily affected by solvothermal synthesis. In this study, the solvent effects of ethylene glycol and water were compared in the presence of polyvinylpyrrolidone (PVP) through solvothermal and hydrothermal reactions, respectively. X-ray diffraction patterns, Fourier-transform infrared spectra, and X-ray photoelectron spectra confirmed the formation of BiOCl nanosheets with numerous oxygen-rich vacancies. Scanning electron microscopy and transmission electron microscopy images showed circular plate-like structures or spherical clusters with a diameter of approximately 1 μm when BiOCl was prepared using water or without the addition of PVP, respectively. The plate-like structure and the spherical clusters transformed into cotton-like spherical clusters assembled from ultra-thin nanosheets with diameters ranging from 20 to 50 nm after using ethylene glycol and PVP. UV–vis absorption spectra showed that BiOCl with a cotton-like spherical structure could achieve higher dye degradation efficiency than BiOCl with a plate-like or spherical structure. The piezoelectric-enhanced photodegradation rates of rhodamine B were significantly increased by about 22 times since the piezoelectric photocurrent intensities rose nearly three times and the generation of •O 2 − and •OH increased. The photocatalytic hydrogen production was improved by 55.3 % and sustained up to 4 cycles due to the conduction band reduction, as proven by the Mott-Schottky plot.
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
危险品化学品经营许可证（带存储）