TALANTA
·
2025
·
IF 6.1
Linzi Huang,Yuhui Qiu,Xiaoqian Sun,Kunxiang Deng,Xinyi Li,Yixi Xie,Pengcheng Zhao,Junjie Fei
Tert-butylhydroquinone (TBHQ) is a common antioxidant in food oils, and reliable detection methods are needed to ensure food safety. Here, a photoelectrochemical (PEC) sensor based on Bi 2 O 3 /MgIn 2 S 4 /GCE was developed for the detection of TBHQ. The sensor performance was significantly enhanced through electrostatic assembly of sheet-like Bi 2 O 3 onto flower-like MgIn 2 S 4 , forming a type-II heterojunction with carefully controlled component ratios, pH, and applied potential. The improved detection capability is attributed to the synergistic effect of the heterojunction structure. Furthermore, the selectivity of the sensor towards TBHQ was elucidated through the study of electrostatic interactions and redox potentials. The detection limit of the developed Bi 2 O 3 /MgIn 2 S 4 /GCE sensor was as low as 9 nM with two linear ranges (0.03–0.18 μM and 0.18–60 μM). Its effectiveness in monitoring food safety has been demonstrated by successful uses in blend oils and soybean oils.
研究领域:
分析化学
·
食品安全
·
材料科学
·
光电化学
·
传感器技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Advanced Science
·
2026
·
IF 14.1
Shuaihao Ma,Jianglong Kong,Shidong Zhang,Wentao Li,Ling Yan,Deng Long,Xinglin Yu,Dawei Wang,Zheng Han,Sihan Ma,Lin Wang,Guang Ran
The stable modulation of the local charge distribution behavior induced by unsaturation sites within photocatalysts continues to pose a significant challenge in the quest to achieve notable enhancements in photocatalytic activity. Herein, we harnessed the hydrogen annealing reduction technique to deliberately introduce oxygen vacancies (OVs) into the BiOCl lattice for constructing the OVs-Bi-O structure, which decreases the valence state of Bi, and diminishes the Bi─O coordination, further establishing a charge asymmetric region within the material. This distinctive structural arrangement facilitates the sufficient migration of electrons to adjacent Bi sites that are closely linked to the OVs, significantly promoting the capture capability of electrons, leading to more adsorption and activation of water and oxygen as well as the conversion of reactive oxygen radicals. The engineered OVs-BiOCl variant showcases potential photocatalytic prowess, boasting a satisfactory photocatalytic application than that of its unmodified BiOCl counterpart. Under low-light conditions, this variant impressively achieves a ∼98.1% removal efficiency for RhB, while concurrently achieving an almost complete elimination of E. coli . This finding presents an insightful approach for manipulating unsaturation coordination active sites through the strategic introduction of controllable defects and elucidates the impact of unsaturation coordination on photocatalytic efficiency.
✓ 已验证
DOI
PubMed
高影响因子
CERAMICS INTERNATIONAL
·
2020
·
IF 3.83
Xin Fang,Jun Chen,Jing Zhan
Semiconductor-based heterostructure photocatalyst attracts extensive attention because of its excellent interface charge transfer/separation ability. Here, the β-Bi 2 O 3 /CeO 2 heterostructure photocatalysts are fabricated via a simple mechanochemical couple with thermal decomposition strategy. The introduction of CeO 2 can not only stabilize the phase of β-Bi 2 O 3 but also construct a heterojunction at the interface, resulting in the improved visible light response capability and efficient transfer and separation of photo-generated charges. Besides, the increased specific surface area and pore volume increase the active sites to accelerate the adsorption and mass transfer process. As a result, the β-Bi 2 O 3 /CeO 2 heterostructure photocatalyst shows remarkably enhanced photocatalytic performance towards malachite green (MG) degradation under visible-light irradiation compared with the Bi 2 O 3 and CeO 2 . The degradation efficiency of MG over the optimized β-Bi 2 O 3 /CeO 2 heterostructure reaches up to 97.5% after 2 h of visible-light irradiation. This work provides a new approach for the rational design of heterojunction photocatalyst combined with phase and interface engineering and opens up a potential avenue for efficient application of Bi 2 O 3 photocatalyst for efficient energy conversion.
研究领域:
材料科学
·
环境化学
·
光催化
·
纳米材料
·
能源转换
✓ 已验证
DOI
高影响因子
TRIBOLOGY INTERNATIONAL
·
2025
·
IF 6.9
Wangfei Shen,Qingzhe Zhang,Yingying Wang,Pu Zhang,Xiaoliang Zhang,Chunxia Wu,Cunxin Jia,Jingkang Liu,Xudong Xue,Yanming Wang
Two-dimensional lubricating fillers play a crucial role in strengthening the tribological performance of polymer coatings. In this study, MXene-PDA-Bi 6 O 7 (MXene/Bi 6 O 7 ) heterostructured composite nanofillers were prepared via a mussel-inspired chemical method. Polyimide (PI) composite coatings with varying MXene:Bi₆O₇ mass ratios were fabricated, and their microstructure, mechanical properties, and tribological performance were systematically characterized. The loading of Bi 6 O 7 nanoflowers onto the surface of PDA-modified MXene was achieved through in situ assembly, resulting in the formation of MXene/Bi 6 O 7 heterostructures. The experimental results demonstrated that the synergistic effect of MXene and Bi 6 O 7 significantly enhanced the properties of the PI composite coatings. Specifically, when the MXene-to-Bi₆O₇ mass ratio was 4:6, the PI composite coatings exhibited an 11.2 % reduction in friction coefficient and a 70.5 % decrease in wear rate compared with pure PI. Additionally, the tensile strength of the PI matrix was increased to 185.99 MPa. The MXene/Bi 6 O 7 heterostructure effectively reduced direct contact between the friction pairs by forming a dense transfer membrane, thereby maintaining stable lubrication performance under a broad range of conditions. The study elucidates the role of two-dimensional heterostructures in enhancing the interfacial mechanics and tribological properties of polymers, providing theoretical guidance and technical routes for the development of high-performance abrasion-resistant polymer coating materials.
研究领域:
材料科学
·
摩擦学
·
纳米复合材料
·
聚合物涂层
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Qiaolan Shi,Lu Yuan,Joop de Vries,Brandon W. Peterson,Jian Liu,Yijin Ren,Henny C. van der Mei
Due to the high resistance and complexity of biofilms, alternatives to traditional antibiotic treatments are urgently needed. Here, we investigated whether Pt nanoparticles grown on Bi 3 O 4 Br nanosheets (Pt NP /Bi 3 O 4 Br) can enhance the efficacy of the antibiotic ampicillin against biofilm-associated infections. X-ray photoelectron spectroscopy revealed abundant oxygen vacancies in the Bi 3 O 4 Br nanosheet creating an ideal surface for Pt nanoparticles growth. The obtained Pt NP /Bi 3 O 4 Br nanozyme had a uniform Pt nanoparticle distribution confirmed by X-ray powder diffraction and transmission electron microscopy with high-angle annular dark-field scanning. Compared to Bi 3 O 4 Br nanosheets alone, the nanozyme demonstrated significantly higher catalytic activity for reactive oxygen species generation facilitated by efficient electron transfer from Pt nanoparticles. When combined with ampicillin, Pt NP /Bi 3 O 4 Br nanozyme significantly enhanced bactericidal efficacy against both Gram-positive Staphylococcus aureus and Gram-negative Escherichia coli biofilms in vitro as shown by reduction in biofilm thickness and colony-forming units. In a murine skin infection model, the combination accelerated wound healing following S. aureus infection. Additionally, the combined treatment selectively reduced the pathogen Streptococcus mutans in human ex vivo oral biofilms while preserving the healthy human microbiome indicating potential applications in dental care. In conclusion, this work demonstrates that nanozyme-enhanced antibiotic therapy offers a promising strategy to combat biofilm-associated infections and antibiotic resistance.
研究领域:
纳米医学
·
抗菌治疗
·
生物膜研究
·
材料科学
·
传染病
✓ 已验证
产品关联
DOI
高影响因子
INORGANIC CHEMISTRY COMMUNICATIONS
·
2026
·
IF 5.9
Shuyan Qi,Yang Wang,Ling Guan,Xu Hu,Haiyang Li
This study addresses antibiotic water pollution by synthesizing Zr-doped Bi₂₄O₃₁Cl₁₀ (Bi₂₄(₁₋ₓ)Zr₁₈ₓO₃₁Cl₁₀) photocatalysts via hydrothermal method for tetracycline hydrochloride (TC-HCl) removal. Zr doping ratios (6–14%) were systematically investigated, with the optimal BZOC4 (12% Zr) degrading 91.24% of 20 mg/L TC-HCl within 120 min under 500 W xenon lamp irradiation (pH = 9). Its reaction rate constant (0.0239 min −1 ) is triple that of pristine Bi₂₄O₃₁Cl₁₀. Zr doping reduces the band gap from 3.12 eV to 2.8 eV, improves visible light utilization (absorption edge red-shifted to 525 nm), accelerates electron transfer, and reduces e − /h + recombination—supported by UV –Vis DRS, PL, and electrochemical tests. Superoxide radicals (O₂ − ·) and holes (h + ) are primary active species, confirmed by radical trapping and ESR. TOC analysis confirms 32.4% mineralization of TC-HCl to CO₂ and H₂O.This work offers new design strategies for bismuth halide-based photocatalysts in antibiotic remediation by integrating structural regulation and electronic modulation via Zr doping.
✓ 已验证
产品关联
DOI
高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
·
2022
·
IF 7.139
Tao Zhang,Hongzheng Pu,Hanlu Zeng,Ying Zhou,Xiangnan Gong,Qian Ye,Chuanyao Yang,Dingfeng Yang,Yuanyuan Li
Orbital engineering is an important strategy for modulating light absorption in photocatalysis . Here, Bi doping of the oxide photocatalyst Li 2 SnO 3 to enhance light absorption was rationally designed by orbital engineering. Based on density functional theory, owing to the lower Bi 6s energy level compared with that of Sn 5s, a deep impurity energy level induced by ionic Bi–O bonds is generated in the middle band gap of Li 2 SnO 3 . The impurity energy level can facilitate the utilization efficiency of light absorption, leading to remarkably enhanced photocatalytic performance. For Li 2 Sn 0.9 Bi 0.1 O 3 , the photodegradation rate of tetracycline solution reached 76% within 30 min, which was approximately 2.6 times higher than that for Li 2 SnO 3 . A radical trapping experiment revealed that the holes (h + ) play a dominant role in the elimination reaction . Finally, liquid chromatography–mass spectrometry was performed to monitor the photocatalytic process. This study lays a foundation for rational design of photocatalysts with excellent light absorption for photocatalysis .
研究领域:
材料科学
·
光催化
✓ 已验证
DOI
高影响因子
Sustainable Energy & Fuels
·
2026
·
IF 4.6
Rongtao Xiao,Ling Ma,Ya Zhang,Honggui Wang,Zhe Piao
Converting carbon dioxide and water into high-value chemicals using renewable energy sources such as solar and wind power is an effective strategy to simultaneously address the depletion of fossil energy and promote low-carbon emissions and alleviate the greenhouse effect. The electrocatalytic reduction of carbon dioxide (CO 2 RR) involves a multi-proton coupled electron transfer process, including multiple steps such as CO 2 adsorption, activation and hydrogenation. Although significant progress has been made in the electrocatalytic conversion of CO 2 RR to formate, achieving formate production that combines sustained high activity, high selectivity and high stability still faces severe challenges. This study developed a high-performance electrocatalyst, Bi 2 O 3 -In 2 O 3 @CuO, which was obtained by in-situ growth of core-shell nanowire structures on Cu foams. This structure takes Cu nanowires (NWs) as the core, and the outer layer was bismuth-indium metal oxide shell. The obtained catalyst exhibited excellent performance in CO 2 RR, with a current density reaching 28.4 mA cm -2 and a Faraday efficiency of formate as high as 88.7%.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2026
·
IF 6.7
Jitang Chen,Qian Li,Chengbing Ma,Yupeng Yuan,Huiquan Li
The rational design of heterojunction photocatalysts is essential for overcoming the persistent challenge of charge recombination in solar water-splitting systems. Herein, a step-scheme (S-scheme) AgI/Bi₇O₉I₃ heterojunction was fabricated using a facile one-pot hydrothermal method, where deliberate interfacial engineering enables efficient charge separation and transfer. The optimized heterojunction demonstrated remarkable photocatalytic oxygen (O₂) evolution activity, achieving a rate of 2046.22 μmol·g⁻¹·h⁻¹ under visible-light irradiation (λ ≥ 420 nm)—3.1 and 1.97 times higher than those of pristine AgI and Bi₇O₉I₃, respectively. Ultraviolet photoelectron spectroscopy (UPS) and electron spin resonance (ESR) analyses collectively revealed that a built-in electric field formed at the interface drives the directional migration of electrons from AgI to Bi₇O₉I₃, following an S-scheme charge transfer pathway. This mechanism not only enhances the separation of photogenerated carriers but also preserves strong redox capabilities for the water oxidation reaction. This study presents an effective interfacial engineering strategy for developing high-performance heterojunction photocatalysts and provides fundamental insights into charge behavior in S-scheme photocatalytic systems.
✓ 已验证
产品关联
DOI
高影响因子
APPLIED CATALYSIS B-ENVIRONMENTAL
·
2025
·
IF 21.1
Xue Xiao,Qiuhui Zhu,Jiapeng Hu,Yin Shen,Yu Huang,Yuanhao Wang,Chuanyi Wang
Photocatalysis is appealing in removing trace NO, but its efficacy is often deteriorated by H 2 O, which is ubiquitous in environment, and how to resolve this issue and elucidate the underlying mechanisms at the molecular-level are challenging. Herein, we report a full-spectrum Bi/Bi 4 Ti 3 O 12 catalyst modified with Bi-O vacancy associates via a steam-assisted chemical reduction process. The optimized structure demonstrates NO removal efficiency of 75.5 %, four times over its counterpart, Bi 4 Ti 3 O 12 (37.9 %). Based on positron annihilation spectra and theoretical studies, the enhanced activity is induced by Bi-O vacancy associates, which not only optimizes the photogenerated carrier dynamical behaviors but lowers the energy barriers for photocatalytic oxidation of NO. Importantly, the photothermal activity of the optimal sample exhibited a decline from 76.7 % (0 % RH) to 71.2 % (100 % RH), whereas its photoactivity (20°C) demonstrated a more pronounced decrease, dropping from 60.1 % (0 % RH) to 41.2 % (100 % RH). Therefore, humidity-resistant performance over the optimal sample is attributed to photothermal effect induced by in-situ precipitated Bi and multiple defects. Furthermore, the results of adsorption and desorption behavior of H 2 O and in situ DRIFTS suggest the photothermal-assisted desorption of surface-bound H 2 O can suppress the interactions of H 2 O and stable bidentate nitrate ( bi -NO 3 ⁻) by hydrogen bonds to generate monodentate nitrate ( m -NO 3 ⁻), thereby hindering the photodecomposition of m -NO 3 ⁻ to NO/NO 2 . This work elucidates the significance of photothermal effect in developing efficient photocatalyst for atmospheric NO purification in humid conditions.
研究领域:
环境催化
·
材料科学
·
大气污染控制
·
物理化学
·
纳米技术
✓ 已验证
DOI
高影响因子
Journal of Materials Chemistry A
·
2024
·
IF 10.7
Xiao Liu,Jicong Wang,Fangyuan Zhu,Yanrui Li,Wenchao Tian,Weijia Wang,Ruiyun Guo,Laijun Liu,Jing Shi
Photocatalytic conversion of CO2 into renewable fuels is an exciting and challenging approach to mitigate carbon emissions and energy crisis. The efficiency is hindered by the insufficient carrier transport capacity and high electron-hole pair complexation of catalysts. The inherent spontaneous polarization in ferroelectric materials can affect the generation, transportation, and isolation of intermediates within catalytic reactions in modulating the pace and effectiveness of photocatalytic processes. Herein, ferroelectric bismuth sodium titanate (BNT) decorated by oxygen vacancies (OVs) via in-situ reduction is first explored to promote photocatalytic CO2 reduction reaction (CO2RR). The chemical states and coordination environment of the cations and OVs are elaborated by using the X-ray absorption fine structure to probe weakened Bi-O bonds and enhanced lattice distortion. Besides built-in electric fields originating from intrinsic spontaneous polarization, carrier dynamics and reactive sites are optimized with extended visible light absorption thanks to the special morphology and OVs. Remarkably, defected catalysts show 18 times higher CO reduction yield than pristine BNT, outperforming state-of-the-art bulk ferroelectrics for single photocatalytic CO2RR. Interestingly, the product selectivity can be tailored after a poling treatment. This work provides a systematic approach to designing efficient ferroelectric photocatalysts, and meanwhile expands the ferroelectric photocatalysts family for advancing CO2 conversion.
研究领域:
材料科学
·
环境科学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
POLYHEDRON
·
2026
·
IF 2.6
Lan Zhou,Qindan Zheng,Luyu Tian,Yadian Xie,Dengpan Nie
Bismuth oxide (Bi 2 O 3 ) is widely used in photocatalytic oxidation degradation of organic pollutants due to its simple composition, green environmental protection and stable structure. However, the limited specific surface area (SSA) and the slow charge kinetics significantly limit its photocatalytic ability. Here, Bi 2 O 3 /MWCNTs heterojunctions were synthesized using hydroxylated multi-walled carbon nanotubes (MWCNTs-OH) as the substrate, explore the crystal growth mechanism and apply it to photocatalytic oxidation reactions. The one-dimensional (1D) structure and excellent electrical conductivity of MWCNTs-OH provide a special transport path for the spatial separation of photogenerated electrons and holes. The stable chemical properties and unique hollow cavity structure of MWCNTs-OH significantly increase the specific surface area of Bi 2 O 3 /CNTs. The optimized Bi 2 O 3 /CNT-3 demonstrated outstanding performance in the photocatalytic oxidation degradation of organic substances such as lignin and RhB. The photocatalytic activity of lignin degradation under visible light has increased by 5.8 times, and the performance of RhB removal has increased by 6.7 times.
✓ 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）