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Vacancy engineering tailoring bismuth molybdate with improved haloperoxidase-like activity for antibacterial applications

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Colloids and surfaces A: Physicochemical and engineering Aspects 2025年 724卷

作者： Zhu, Xueling Guo, Ding Zhang, Jinkai Chen, Rongrong Wang, Jun Duan, Jizhou Key Laboratory of Superlight Materials and Surface Technology Ministry of Education College of Materials Science and Chemical Engineering Harbin Engineering University Harbin150001 China University of Chinese Academy of Sciences 19 Yuquan Road Beijing100039 China State Key Laboratory of Advanced Marine Materials Institute of Oceanology Chinese Academy of Sciences Qingdao266071 China

Biofouling on marine equipment is a significant worldwide issue causing environmental harm and economic losses. Drawing inspiration from the natural defense mechanisms of marine algae, an innovative oxygen vacancy engineering strategy is presented to develop advanced haloperoxidase-like based on bismuth molybdate (OVs-BMO). The critical need for interfacial activity modulation is achieved through deliberate vacancy engineering, creating abundant oxygen vacancies and increasing specific surface area that serve as both catalytic active sites and surface charge modulation centers. The engineered OVs-BMO nanozymes demonstrate remarkable catalytic activity, with a bromination reaction rate of 0.15 µM min⁻¹ at a concentration of 0.05 mg mL−1, which represents a 36-fold enhancement in efficiency compared to pristine bismuth molybdate (BMO). The breakthrough in haloperoxidase-like activity stems from our precisely controlled vacancy architecture and increased specific surface area that optimizes: surface electron density redistribution, reactive oxygen species generation efficiency, substrate adsorption-desorption dynamics and surface-active site number. Moreover, under natural seawater conditions, OVs-BMO exhibits significant antibacterial effectiveness against various bacterial strains. Exposure to low concentrations of H2O2 at 25 μM, 350 μM, and 100 μM results in notable bacterial inhibition rates of 80 %, 91 %, and 92 % against E. coli, S. aureus, and P. aeruginosa, respectively. The interfacial engineering strategy presented provides a novel paradigm for designing marine antifouling materials that combine enzymatic catalysis with physical anti-adhesion mechanisms, offering significant potential for sustainable ocean technology development. © 2025

关键词： Ocean engineering

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Self-assembled CoOOH on TiO_(2) for enhanced photoelectrochemical water oxidation

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Journal of Energy Chemistry 2021年第9期30卷 512-521页

作者： Xiangrong Ren Yujin Ji Yiyue Zhai Ningyi Yuan Jianning Ding Youyong Li Junqing Yan Shengzhong Frank Liu Key Laboratory of Applied Surface and Colloid Chemistry Ministry of EducationShaanxi Key Laboratory for Advanced Energy DevicesShaanxi Engineering Lab for Advanced Energy TechnologySchool of Materials Science and EngineeringShaanxi Normal UniversityXi’an 710119ShaanxiChina Institute of Functional Nano&Soft Materials(FUNSOM) Jiangsu Key Laboratory for Carbon-Based Functional Materials&DevicesSoochow UniversitySuzhou 215123JiangsuChina iChEM Dalian Institute of Chemical PhysicsUniversity of Chinese Academy of SciencesChinese Academy of SciencesDalian 116023LiaoningChina School of Materials Science and Engineering Jiangsu Collaborative Innovation Center of Photovoltaic Science and EngineeringJiangsu Cultivation Base for State Key Laboratory of Photovoltaic Science and TechnologyChangzhou UniversityChangzhou 213164JiangsuChina

Providing efficient charge transfer through the interface between the semiconductor and co-catalyst is greatly desired in photoelectrocatalytic (PEC) energy ***,we excogitate a novel and facile means,via electrochemical activation,to successfully load the amorphous CoOOH layer architecture onto the surface of TiO_(2).Intriguingly,the as-obtained 6%CoOOH-TiO_(2)photoelectrode manifests optimal PEC performance with a high photocurrent density of 1.3 mA/cm~2,3.5 times higher than that of pristine TiO_(2).Electrochemical impedance spectroscopy (EIS),Tafel analysis and cyclic voltammetry (CV) methods show that the carrier transfer barrier within the electrode and the transition of Co^(3+)OOH to Co^(4+)OOH have the dominating effects on the PEC *** calculation reveals that the interface between the CoOOH and TiO_(2)improves the homogeneity of effective d-orbital electronic-transfer ability among Co *** research sheds light on the water oxidation reaction and the design of more favorable PEC cocatalysts.

关键词： Amorphous Co-catalyst Water oxidation Mechanism TiO_(2)

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Recent progress on surface chemistryⅠ:Assembly and reaction

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Chinese Chemical Letters 2024年第12期35卷 43-94页

作者： Xin Li Zhen Xu Donglei Bu Jinming Cai Huamei Chen Qi Chen Ting Chen Fang Cheng Lifeng Chi Wenjie Dong Zhenchao Dong Shixuan Du Qitang Fan Xing Fan Qiang Fu Song Gao Jing Guo Weijun Guo Yang He Shimin Hou Ying Jiang Huihui Kong Baojun Li Dengyuan Li Jie Li Qing Li Ruoning Li Shuying Li Yuxuan Lin Mengxi Liu Peinian Liu Yanyan Liu Jingtao Lü Chuanxu Ma Haoyang Pan JinLiang Pan Minghu Pan Xiaohui Qiu Ziyong Shen Shijing Tan Bing Wang Dong Wang Li Wang Lili Wang Tao Wang Xiang Wang Xingyue Wang Xueyan Wang Yansong Wang Yu Wang Kai Wu Wei Xu Na Xue Linghao Yan Fan Yang Zhiyong Yang Chi Zhang Xue Zhang Yang Zhang Yao Zhang Xiong Zhou Junfa Zhu Yajie Zhang Feixue Gao Yongfeng Wang Center for Carbon-based Electronics and Key Laboratory for the Physics and Chemistry of Nanodevices School of ElectronicsPeking UniversityBeijing 100871China Spin-X Institute School of MicroelectronicsSouth China University of TechnologyGuangzhou 511442China School of Materials and Energy Guangzhou Key Laboratory of Low-Dimensional Materials and Energy Storage DevicesGuangdong University of TechnologyGuangzhou 510006China Faculty of Materials Science and Engineering Kunming University of Science and TechnologyKunming 650093 China i-Lab CAS Key Laboratory of Nanophotonic Materials and DevicesSuzhou Institute of Nano-Tech and Nano-BionicsChinese Academy of SciencesSuzhou 215123China CAS Key Laboratory of Molecular Nanostructure and Nanotechnology CAS Research/Education Center for Excellence in Molecular SciencesBeijing National Laboratory for Molecular Sciences(BNLMS)Institute of ChemistryChinese Academy of SciencesBeijing 100190China State Key Laboratory for Organic Electronics and Information Displays&Jiangsu Key Laboratory for Biosensors Institute of Advanced MaterialsJiangsu National Synergetic Innovation Center for Advanced MaterialsNanjing University of Posts and TelecommunicationsNanjing 210023China Institute of Functional Nano and Soft Materials(FUNSOM) Jiangsu Key Laboratory for Carbon-Based Functional Materials and DevicesSoochow UniversitySuzhou 215123China Hefei National Research Center for Physical Sciences at the Microscale and Synergetic Innovation Center of Quantum Information and Quantum Physics University of Science and Technology of ChinaHefei 230026China Institute of Physics&University of Chinese Academy of Sciences Beijing 100190China State Key Laboratory of Catalysis Dalian Institute of Chemical PhysicsChinese Academy of SciencesDalian 116023China College of Chemistry Beijing Normal UniversityBeijing 100875China Beijing National Laboratory for Molecular Sciences(BNLMS) College of Chemistry and Molecular EngineeringPeking UniversityBeijing 100871China School

surface chemistry focuses on the investigation of the adsorption,migration,assembly,activation,reaction,and desorption of atoms and molecules at *** chemistry plays the pivotal roles in both fundamental science and applied *** review will summarize the recent progresses on surface assembly,synthesis and catalysis investigated mainly by scanning tunneling microscopy and atomic force *** assemblies of water and small biomolecules,construction of Sierpin′ski triangles and surface chirality are ***-surface synthesis of conjugated carbo-and heterocycles and other kinds of carbon nanostructures are *** model catalysis,including single-atom catalysis and electrochemical catalysis,are discussed at the single-atom level.

关键词： surface chemistry Assembly surface synthesis Catalysis on surface surface electrochemical processes

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Antisymmetric planar Hall effect in rutile oxide films induced by the Lorentz force

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Science Bulletin 2024年第15期69卷 2362-2369页

作者： Yongwei Cui Zhaoqing Li Haoran Chen Yunzhuo Wu Yue Chen Ke Pei Tong Wu Nian Xie Renchao Che Xuepeng Qiu Yi Liu Zhe Yuan Yizheng Wu Department of Physics State Key Laboratory of Surface PhysicsFudan UniversityShanghai 200433China Institute for Nanoelectronic Devices and Quantum Computing Fudan UniversityShanghai 200433China Interdisciplinary Center for Theoretical Physics and Information Sciences Fudan UniversityShanghai 200433China Center for Advanced Quantum Studies and Department of Physics Beijing Normal UniversityBeijing 100875China Laboratory of Advanced Materials Shanghai Key Lab of Molecular Catalysis and Innovative MaterialsAcademy for Engineering&TechnologyFudan UniversityShanghai 200438China Shanghai Key Laboratory of Special Artificial Microstructure Materials and Technology School of Physics Science and EngineeringTongji UniversityShanghai 200092China Zhejiang Laboratory Hangzhou 311100China Shanghai Research Center for Quantum Sciences Shanghai 201315China Shanghai Key Laboratory of Metasurfaces for Light Manipulation Fudan UniversityShanghai 200433China

The conventional Hall effect is linearly proportional to the field component or magnetization component perpendicular to a film. Despite the increasing theoretical proposals on the Hall effect to the in-plane field or magnetization in various special systems induced by the Berry curvature, such an unconventional Hall effect has only been experimentally reported in Weyl semimetals and in a heterodimensional superlattice. Here, we report an unambiguous experimental observation of the antisymmetric planar Hall effect(APHE) with respect to the in-plane magnetic field in centrosymmetric rutile RuO_(2) and IrO_(2) single-crystal films. The measured Hall resistivity is found to be linearly proportional to the component of the applied in-plane magnetic field along a particular crystal axis and to be independent of the current direction or temperature. Both the experimental observations and theoretical calculations confirm that the APHE in rutile oxide films is induced by the Lorentz force. Our findings can be generalized to ferromagnetic materials for the discovery of anomalous Hall effects and quantum anomalous Hall effects induced by in-plane magnetization. In addition to significantly expanding knowledge of the Hall effect, this work opens the door to explore new members in the Hall effect family.

关键词： Antisymmetric planar Hall effect Lorentz force Rutile oxide films Crystal symmetry

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surface and interface chemistry in metal‐free electrocatalysts for electrochemical CO_(2) reduction

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SmartMat 2022年第1期3卷 5-34页

作者： Wei Zhang Baohua Jia Xue Liu Tianyi Ma Institute of Clean Energy Chemistry Key Laboratory for Green Synthesis and Preparative Chemistry of Advanced MaterialsCollege of ChemistryLiaoning UniversityShenyangLiao NingChina Centre for Translational Atomaterials Swinburne University of TechnologyHawthornVictoriaAustralia The Australian Research Council(ARC)Industrial Transformation Training Centre in Surface Engineering for Advanced Materials(SEAM) Swinburne University of TechnologyHawthornVictoriaAustralia School of Science RMIT UniversityMelbourneVictoriaAustralia

The electrochemical reduction of carbon dioxide(CO_(2))into value‐added fuels and chemicals presents a sustainable route to alleviate CO_(2) emissions,promote carbon‐neutral cycles and reduce the dependence on fossil *** the thermodynamic stability of the CO_(2) molecule and sluggish reaction kinetics,it is still a challenge to design highly efficient electrocatalysts for the CO_(2) reduction reaction(CO_(2)RR).It has been found that the surface and interface chemistry of electrocatalysts can modulate the electronic structure and increase the active sites,which is favorable for CO_(2) adsorption,electron transfer,mass transport,and optimizing adsorption strength of reaction ***,the effect of surface and interface chemistry on metal‐free electrocatalysts(MFEs)for CO_(2)RR has not been comprehensively ***,we discuss the importance of the surface and interface chemistry on MFEs for improving the electrochemical CO_(2)RR performance based on thermodynamic and kinetic *** fundamentals and challenges of CO_(2)RR are firstly ***,the recent advances of the surface and interface chemistry in improving reaction rate and overcoming reaction constraints are reviewed from regulating electronic structure,active sites,electron transfer,mass transport,and intermediate binding ***,the research challenges and prospects are proposed to suggest the future designs of advanced MFEs in CO_(2)RR.

关键词： electrochemical CO_(2)reduction reaction metal‐free electrocatalysts surface and interface chemistry

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Alkali ion-promoted palladium subnanoclusters stabilized on porous alumina nanosheets with enhanced catalytic activity for benzene oxidation

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Nano Research 2022年第7期15卷 5912-5921页

作者： Zhijun Li Minghui Di Wei Wei Leipeng Leng Zhijun Li Cheng He Qiang Tan Qian Xu J.Hugh Horton Li Li Junfa Zhu Joint International Research Laboratory of Advanced Chemical Catalytic Materials&Surface Science College of Chemistry and Chemical EngineeringNortheast Petroleum UniversityDaqing 163318China Key Laboratory of Functional Inorganic Materials Chemistry(Ministry of Education) School of Chemistry and Materials ScienceHeilongjiang UniversityHarbin 150080China State Key Laboratory for Mechanical Behavior of Materials School of Material Science and EngineeringXi’an Jiaotong UniversityXi’an 710049China National Synchrotron Radiation Laboratory University of Science and Technology of ChinaHefei 230029China Department of Chemistry Queen’s UniversityKingston K7L 3N6Canada College of Chemistry and Chemical Engineering Qiqihar UniversityQiqihar 161006China

Catalytic C−H bond activation is one of the backbones of the chemical *** metal subnanoclusters consisting of a few atoms have shown attractive properties for heterogeneous ***,the creation of such catalyst systems with high activity and excellent anti-sintering ability remains a grand ***,we report on alkali ion-promoted Pd subnanoclusters supported over defectiveγ-Al_(2)O_(3) nanosheets,which display exceptional catalytic activity for C−H bond activation in the benzene oxidation *** presence of Pd subnanoclusters is verified by aberration-corrected high-angle annular dark-field scanning transmission electron microscopy,X-ray absorption spectroscopy,and X-ray photoelectron *** catalyst shows excellent catalytic activity,with a turnover frequency of 280 h^(−1) and yield of 98%,in benzene oxidation reaction to give phenol under mild ***,the introduction of alkali ion greatly retards the diffusion and migration of metal atoms when tested under high-temperature sintering *** functional theory(DFT)calculations reveal that the addition of alkali ion to Pd nanoclusters can significantly impact the catalyst’s structure and electronic properties,and eventually promote its activity and *** work sheds light on the facile and scalable synthesis of highly active and stable catalyst systems with alkali additives for industrially important reactions.

关键词： Pd subnanoclusters γ-Al_(2)O_(3)nanosheets heterogeneous catalysis benzene oxidation catalytic activity

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An LSTM-assisted 23-dimensional GNSS/INS Tightly Integrated System for train Localization 13

An LSTM-assisted 23-dimensional GNSS/INS Tightly Integrated ...

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13th International Conference on Transportation and Traffic engineering, ICTTE 2024

作者： Wu, Jinxi Jiang, Wei Jin, Zhenlu Wang, Jian Cai, Baigen School of Automation and Intelligence Beijing Jiaotong University Beijing China State Key Laboratory of Advanced Rail Autonomous Operation Beijing Jiaotong University Beijing China Beijing Engineering Research Centre of EMC and GNSS Technology for Rail Transportation Beijing Jiaotong University Beijing China School of Aeronautical Engineering Institute Air Force Engineering University Xian China

ISBN: (纸本)9781837242672

The integrated GNSS/INS navigation system has been widely used for train positioning. However, when the train travels through areas such as tunnels and dense forests where GNSS signals are easily blocked, the positioning accuracy of the tightly coupled GNSS/INS system faces a severe challenge. To address this issue, this paper proposed an LSTM-assisted 23-dimensional GNSS/INS tight integration navigation system, which increases the scale factor and bias of the IMU into the state vector compared to the traditional 17-dimensional navigation system. Additionally, when the train is in an open environment, the LSTM is in training mode, with input being the measured information, and the precise position and velocity increments output by the Kalman filter used as the target for training. When the train operates in GNSS-limited scenarios, it switches to prediction mode, predicting accurate position and velocity increments from the current observation information to correct the system's navigation information. The superiority of the proposed model was verified by the data of the Qinghai-Tibet line collected from an actual train in 2023, and the results show that the proposed LSTM-assisted 23-dimensional model improves the horizontal maximum error in position and velocity over the traditional model by 74.13% and 64.28%. © The Institution of engineering & technology 2024.

关键词： Global positioning system

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Efficient generation of complex vectorial optical fields with metasurfaces

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Light(Science & Applications) 2021年第4期10卷 681-694页

作者： Dongyi Wang Feifei Liu Tong Liu Shulin Sun Qiong He Lei Zhou State Key Laboratory of Surface Physics Key Laboratory of Micro and Nano Photonic Structures(Ministry of Education)and Department of PhysicsFudan UniversityShanghaiChina Shanghai Engineering Research Centre of Ultra-Precision Optical Manufaauring Green Photonics and Department of Optical Science and EngineeringFudan UniversityShanghaiChina Academy for Engineering and Technology Fudan UniversityShanghaiChina Collabo rative Innovation Centre of Advanced Microstructures NanjingChina

Vectorial optical fields(VOFs)exhibiting arbitrarily designed wavefronts and polarization distributions are highly desired in ***,current methods to generate them either require complicated setups or exhibit limited functionalities,which is unfavorable for integration-optics ***,we propose a generic approach to efficiently generate arbitrary VOFs based on metasurfaces exhibiting full-motrix yet inhomogeneous Jones-matrix *** illustrate our strategy with analytical calculations on a model system and an experimental demonstration of a meta-device that can simultaneously deflect light and manipulate its *** on these benchmark results,we next experimentally demonstrate the generation of a far-field VOF exhibiting both a vortex wavefront and an inhomogeneous polarization ***,we design/fabricate a meta-device and experimentally demonstrate that it can generate a complex near-field VOF-a cylindrically polarized surface plasmon wave possessing orbital angular momentum-with an efficiency of-34%.Our results establish an efficient and ultracompact platform for generating arbitrary predesigned VOFs in both the near-and far-fields,which may find many applications in optical manipulation and communications.

关键词： arbitrary inhomogeneous generating

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Effects of nanoceramic particle size and content on the wear resistance of micro-arc oxidation coatings for 2A12 aluminum alloy

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Heliyon 2024年第19期10卷 e38719页

作者： Li, Wen Cheng, Ming Zhang, Xiaochen Wei, Guoke Aviation Key Laboratory of Science and Technology on Advanced Surface Engineering AVIC Manufacturing Technology Institute Beijing 100024 China Science and Technology on Power Beam Processes Laboratory AVIC Manufacturing Technology Institute Beijing 100024 China

The 2A12 aluminum alloy, renowned for its exceptional mechanical properties, encounters significant limitations in applications involving abrasive environments or frequent contact with other surfaces due to its inadequate wear resistance. This shortcoming substantially reduces the service life of components and escalate maintenance costs, highlighting the urgent need for advanced surface modification techniques. This study meticulously investigates the influence of nanoceramic particle size and content on the wear resistance of micro-arc oxidation (MAO) coatings, a surface modification technique renowned for forming dense, adherent ceramic layers on aluminum alloys. The systematic experimentation revealed that the incorporation of 150 nm α-Al₂O₃ nanoparticles into the MAO matrix achieves an optimal dispersion, leading to a substantial enhancement in wear resistance. The sample with a 5 g/L concentration of 150 nm α-Al₂O₃ nanoparticles doping in the MAO electrolyte demonstrated the lowest mass loss, underscoring its enhanced wear resistance. The enhanced microstructure, enriched with hard ceramic phases such as α-Al₂O₃ and mullite, plays a pivotal role in withstanding wear. Moreover, this study identified that an optimal balance of surface roughness and coating thickness is essential for achieving enhanced wear resistance. The findings of this research provide a strategy for the design of wear-resistant coatings tailored for high-performance applications across aerospace, automotive, and general engineering industries. By optimizing the particle size and concentration in MAO coatings, this study paves the way for the development of durable materials capable of thriving in demanding environments, thereby extending the service life and reducing maintenance requirements of components. © 2024 The Authors

关键词： 2A12 aluminum alloy Micro-arc oxidation Nanoceramic particles surface engineering Wear resistance

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Numerical investigation of the transient process of a cover-plate pre-swirl system

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Journal of Zhejiang University-SCIENCE A 2025年第5期26卷 407-423页

作者： Luo, Yifu Du, Qiang Lian, Zengyan Liu, Guang Xie, Lei Xu, Qingzong Institute of Engineering Thermophysics Chinese Academy of Sciences Beijing China National Key Laboratory of Science and Technology on Advanced Light-duty Gas-turbine Chinese Academy of Sciences Beijing China School of Aeronautics and Astronautics University of Chinese Academy of Sciences Beijing China Qingdao Institute of Aeronautical Technology Qingdao China

A pre-swirl system with a multi-chamber structure is crucial to the secondary air system of an aero engine. The airflow within the pre-swirl system (characterized by high-speed rotation and compressible flow) is complicated. During transient processes in aero engine operation, the pre-swirl system is subjected to upstream fluctuations, which is a less studied aspect. This paper delves into the unsteady flow characteristics within the pre-swirl system. We investigate the influence of different pressure-fluctuation boundary conditions, corresponding to step function, ramp function, and sine function, on the transient response characteristics of the pre-swirl system. The results indicate that the response characteristics are strongly affected by the upstream boundary conditions. An obvious overshoot phenomenon is observed in the actual temperature drop under the step and ramp function conditions. The peak time of the step function is 75% shorter compared to the ramp function. Furthermore, the flow parameters exhibit nonlinear growth during the transient process, emphasizing the need for consideration in future quasi-steady simulations. For the sine function condition, the pressure-fluctuation frequency minimally affects stable values of mass flow rate and actual temperature drop but exerts a substantial influence on the maximum deviation of actual temperature drop of the system. As the frequency increases from 100 Hz to 200 Hz, the maximum deviations for actual temperature drop change from around ±13 K to ±10 K.

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