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Tunning the bandgap of MnO_(2)homojunction by building active high-index facet to achieve rapid electron transfer for enhanced photocatalytic sterilization

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Journal of Materials Science & Technology 2024年第1期168卷 265-275页

作者： Tao Zhang Bo Li Chaofeng Wang Shuilin Wu Shengli Zhu Hui Jiang Yufeng Zheng Zhaoyang Li zhenduo cui Yu Zhang Paul K Chu Xiangmei Liu Biomedical Materials Engineering Research Center Hubei Key Laboratory of Polymer MaterialsMinistry-of-Education Key Laboratory for the Green Preparation and Application of Functional MaterialsSchool of Materials Science and Engineering Hubei UniversityWuhan 430062China School of Health Science&Biomedical Engineering Hebei University of TechnologyTianjin 300401China School of Materials Science&Engineering Peking UniversityBeijing 100871China School of Materials Science&Engineering the Key Laboratory of Advanced Ceramics and Machining Technology by the Ministry of Education of ChinaTianjin UniversityTianjin 300072China Department of Orthopedics Guangdong Provincial People’s HospitalGuangdong Academy of Medical SciencesGuangzhou 510080China Department of Physics Department of Materials Science and Engineering and Department of Biomedical EngineeringCity University of Hong KongHong Kong 999077China

Photocatalysis has been a research hotspot in recent years,and the design and modification of photocat-alysts have been the key *** methods for designing photocatalysts,including constructing heterojunctions and homojunctions,have been developed on the basis of *** this study,two homojunctions of manganese dioxide(MnO_(2)),including a high-index crystal plane homojunction and a general homojunction,are prepared using a stepwise hydrothermal *** a capping agent,the high-index crystal surface of the MnO_(2)is *** is found that the electron transport efficiency be-tween the two components of the homojunction with high-index planes is higher and the adsorption capacity of the oxygen is stronger,which leads to higher photocatalytic *** addition,the newly designed high-index homojunction is used for the treatment of bacterial infections,and it kills Staphy-lococcus aureus(***)and Escherichia coli(***)at rates of 99.95%±0.04%and 99.31%±0.25%,*** also has excellent therapeutic effects on mouse wounds,which implies superb practical application *** work provides a new strategy for the improved design of homojunctions and the application of photocatalytic materials.

关键词： Photocatalysis Homojunction Bandgap High-index facet Antibacterial

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巨噬细胞负载Fe_(3)O_(4)@PLGA纳米颗粒触发智能催化功能杀死多重耐药大肠杆菌

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Engineering 2024年第3期34卷 174-186页

作者： Jieni Fu Xiangmei Liu Zhaoyang Li Yufeng Zheng Yu Zhang Hui Jiang Yanqin Liang Shengli Zhu zhenduo cui Shuilin Wu Key Laboratory of Advanced Ceramics and Machining Technology of the Ministry of Education School of Materials Science and EngineeringTianjin UniversityTianjin 300401China School of Materials Science and Engineering Peking UniversityBeijing 100871China School of Health Sciences and Biomedical Engineering Hebei University of TechnologyTianjin 300401China Department of Orthopedics Guangdong Provincial People’s HospitalGuangdong Academy of Medical SciencesGuangzhou 510080China

Infections with multidrug-resistant(MDR)Gram-negative bacteria,such as MDR Escherichia coli(***),remain a challenge due to the lack of safe antibiotics and high fatality rates under anti-infection *** work presents a form of biomimetic intelligent catalysis inspired by the selective biocatalytic property of macrophages(MΦs),consisting of an intelligent controlling center(a living MΦ)and a Fenton reaction catalyst(Fe_(3)O_(4)@poly(lactic-co-glycolic acid)(PLGA)nanoparticles)for killing MDR *** without harming normal *** MΦ-Fe_(3)O_(4)@PLGA particles(i.e.,the intelligent catalysis particles)exhibit selective biocatalysis activity toward MDR *** by producing H_(2)O_(2) and lipid droplets(LDs).This process activates the lipid metabolism and glycan biosynthesis and metabolism pathways based on the result of RNA sequencing data *** H_(2)O_(2) further reacts with Fe_(3)O_(4)@PLGA to form highly toxic hydroxyl radicals(·OH),while the LDs contain antimicrobial peptides and can target MDR *** highly toxicOH and antimicrobial peptides are shown to combat with MDR ***,such that the antibacterial efficiency of the MΦ-Fe_(3)O_(4)@PLGA particles against MDR *** is 99.29%±0.31%in *** importantly,after several passages,the intelligent catalysis function of the MΦ-Fe_(3)O_(4)@PLGA particles is well ***,the concept of biomimetic intelligent catalysts displays potential for treating diseases other than infections.

关键词： Multidrug-resistant Escherichia coli Macrophage-Fe_(3)O_(4)@PLGA particles Biomimetic intelligent catalysis

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Self-supported amorphous nanoporous nickel-cobalt phosphide catalyst for hydrogen evolution reaction

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Progress in Natural Science:Materials International 2021年第2期31卷 201-206页

作者： Yao Pang Shengli Zhu zhenduo cui Yanqin Liang Zhaoyang Li Shuilin Wu School of Materials Science and Engineering Tianjin University School of Materials Science and Engineering Lanzhou Jiaotong University

Hydrogen evolution reaction(HER) through electrocatalysis using cost-efficient and long-term stable bimetallic phosphide as electrocatalyst holds a great promise for sustainable clean energy technologies. In this study, self-supported nanoporous Ni-Co-P(np-Ni-Co-P) catalyst with amorphous structure was synthesized by utilizing a facile electrochemical dealloying strategy. The results showed that due to the nanoporous structure, disorder atomic arrangement and alloying effect, the np-Ni-Co-P exhibited outstanding electrocatalytic performance for HER with low overpotential of 114 m V at a current density of 10 mA cm~2, small Tafel slope(57.3 mV dec-1) and good long-term durability in 1 M KOH. The synergetic effect of Ni and Co elements improves the intrinsic activity of the active sites. This research provides a direction for the exploration of bimetallic phosphides toward HER in the water splitting process.

关键词： Hydrogen evolution reaction Metal phosphide Electrocatalyst Dealloying Amorphous alloys

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A novel snail-inspired bionic design of titanium with strontium-substituted hydroxyapatite coating for promoting osseointegration

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Journal of Materials Science & Technology 2021年第20期79卷 35-45页

作者： Zhen Geng Xueping Li Luli Ji Zhaoyang Li zhenduo cui Jing Wang Jingyuan cui Xianjin Yang Changsheng Liu Key Laboratory for Ultrafine Materials of Ministry of Education East China University of Science and TechnologyShanghai200237China Tianjin Key Laboratory of Composite and Functional Materials School of Materials Science and EngineeringTianjin UniversityTianjin300350China Engineering Research Center for Biomedical Materials of the Ministry of Education East China University of Science and TechnologyShanghai200237China The State Key Laboratory of Bioreactor Engineering East China University of Science and TechnologyShanghai200237China Frontiers Science Center for Materiobiology and Dynamic Chemistry East China University of Science and TechnologyShanghai200237China

As the population ages,more and more people are suffering from osteoarthritis(OA),resulting in an increasing requirement for joint *** modification to improve the topology and composition of the implants has been proved to be an effective way to improve the primary stability and long-term success rate of joint *** this work,a bionic micro/nano-structure accompanied with a strontium-substituted hydroxyapatite(SrHA)coating was fabricated on titanium(Ti)surface via electrochemical corrosion,ultrasonic treatment,and hydrothermal deposition *** vitro study demonstrated that the bionic structure and the bioactive apatite could synergistically increase the expressions of integrin-related gene(ITGα5β1)and osteoblastic genes(Col-I and OCN),and thus promote osteoblast *** addition,owing to the anti-bone resorption property of Sr^(2+),the coating could effectively inhibit osteoclast differentiation and *** a word,the prepared samples not only promoted osteogenesis but also inhibited *** in vivo experiment via a rabbit model found that the bionic structured surface provided the pore for new bone ingrowth,which was beneficial to the mechanical interlocking between the implant and ***,the bionic structure and bioactive SrHA coating had a synergistic effect on promoting bone formation,osseointegration,and bone-implant bonding *** study therefore presented a new strategy to fabricate bio-functionalized Ti-based implants for potential application in orthopedics field.

关键词： Bionic structure Bioactive apatite Osteoclast activity Osseointegration Bone-implant bonding strength

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Hierarchical Ni_(3)S_(4)@MoS_(2)nanocomposites as efficient electrocatalysts for hydrogen evolution reaction

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Journal of Materials Science & Technology 2021年第36期95卷 70-77页

作者： Yuxi Ren Shengli Zhu Yanqin Liang Zhaoyang Li Shuilin Wu Chuntao Chang Shuiyuan Luo zhenduo cui School of Mechanical Engineering Dongguan University of TechnologyDongguan 523808China School of Materials Science and Engineering Tianjin UniversityTianjin 300350China Tianjin Key Laboratory of Composite and Functional Materials Tianjin 300350China School of Materials Science and Engineering Lanzhou Jiaotong UniversityLanzhou 730070China College of Chemistry Engineering and Materials Science Quanzhou Normal UniversityQuanzhou 362000China

Hydrogen evolution reaction(HER)through water splitting is a promising way to solve the energy ***-metal-free HER electrocatalysts with high efficiency is very important for practical ***,we prepare the Ni_(3)S_(4)@MoS_(2)electrocatalyst on carbon cloth(CC)through a two-step hydrothermal *** Ni_(3)S_(4)nanorods are uniformly integrated with the MoS_(2)nanosheets,forming a hierarchical structure and heterogeneous *** fast electron transfer on the interface enhances the kinetics of catalytic *** hierarchical structure provides more exposed active *** Ni_(3)S_(4)@MoS_(2)/CC exhibits good catalytic activity and long-term stability for *** work provided a practicable strategy to develop efficient electrocatalysts for HER in alkaline media.

关键词： Heterogeneous interfaces Hierarchical structure Metal sulfides Alkaline hydrogen evolution reaction

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Understanding the macroscopical flexibility/fragility of nanoporous Ag:Depending on network connectivity and micro-defects

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Journal of Materials Science & Technology 2020年第18期52卷 91-101页

作者： Chaoyang Wang Shengli Zhu Yanqin Liang zhenduo cui Shuilin Wu Chunling Qin Shuiyuan Luo Akihisa Inoue School of Materials Science and Engineering Tianjin UniversityTianjin300072China Tianjin Key Laboratory of Composite and Functional Materials Tianjin300072China School of Materials Science and Engineering Hebei University of TechnologyTianjin300130China College of Chemistry Engineering and Materials Science.Quanzhou Normal University Quanzhou362000FujianChina Department of Physics King Abdulaziz UniversityJeddah22254Saudi Arabia

The effective engineering applications of nanoporous metals(NPMs)in flexible energy storage and wearable healthcare biosensor monitoring require its uniform ligaments network,specifically crack-free and flexible monolithic ***,the macroscopic fragility of NPMs restricts their applications in wearable electronics *** we focus on the synthetization of highly flexible *** effects of structural factors,***-network connectivity and micro-cracks on the mechanical properties of nanoporous Ag(np Ag)are *** well-interconnected np Ag metal exhibits higher tensile strength,nanohardness and Vickers hardness than those for the ill-interconnected np Ag *** quality of the network connectivity dominates the strength and hardness of the np *** flexibility/fragility is determined by the micro-crack in np *** crack-free np Ag exhibits good flexible *** micro-cracks are introduced,the np Ag becomes *** control of soft volume shrinkage rate(Vsr)and slow surface diffusivity(Ds)effectively suppresses the crack initiation and propagation of as-formed np *** results provide useful insights to synthesize more flexible and crack-free NPM materials for effective use in public wearable electronics and diverse flexible engineering applications in the future.

关键词： Nanoporous metals Crack-free Selective etching Nanoindentation Flexible

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Surface photodynamic ion sterilization of ITO-Cu_(2)O/ZnO preventing touch infection

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Journal of Materials Science & Technology 2022年第27期122卷 10-19页

作者： Zexin Liu Xiangmei Liu zhenduo cui Yufeng Zheng Zhaoyang Li Yanqin Liang Xubo Yuan Shengli Zhu Shuilin Wu School of Materials Science&Engineering the Key Laboratory of Advanced Ceramics and Machining Technology by the Ministry of Education of ChinaTianjin UniversityTianjin 300072China School of Life Science and Health Engineering Hebei University of TechnologyTianjin 300401China School of Materials Science&Engineering Peking UniversityBeijing 100871China

Pathogenic microbial infections are threatening the people’s health and even *** most common channel of infections can be caused by skin contact,especially hand touching facilities such as touching *** this work,Cu_(2)O covered with ZnO nanofilm was prepared on the surface of indium tin oxide conductive glass by electrodeposition and the followed atomic layer deposition *** composite coating had a light transmittance of 71.5%,which met the light transmission needs of touch screen *** spin resonance spectra showed that composite materials can generate more reactive oxygen species(ROS)than a single component under solar light *** was because a p-n junction with a built-in electric field was formed at the interface after Cu_(2)O contacting with *** the process of photocatalysis,photogenerated electrons and holes migrated at the interface driven by the built-in electric field,which promoted the separation of *** antibacterial rate against Staphylococcus aureus reached 92.5%after 3 min of light irradiation with simulated sunlight due to the synergy of ROS and Cu ions,Zn ***,this work may provide a potential method for antibacterial application of preventing hand touch infections.

关键词： Antibacterial Cu_(2)O ZnO Contact infection Photodynamic ion sterilization

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Self-supporting amorphous nanoporous NiFeCoP electrocatalyst for efficient overall water splitting

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Journal of Materials Science & Technology 2021年第23期82卷 96-104页

作者： Yao Pang Wence Xu Shengli Zhu zhenduo cui Yanqin Liang Zhaoyang Li Shuilin Wu Chuntao Chang Shuiyuan Luo School of Materials Science and Engineering Tianjin UniversityTianjin300350China School of Materials Science and Engineering Lanzhou Jiaotong UniversityLanzhou730070China Key Laboratory of Advanced Energy Materials Chemistry(Ministry of Education) College of ChemistryNankai UniversityTianjin300071China School of Mechanical Engineering Dongguan University of TechnologyDongguan523808China College of Chemistry Engineering and Materials Science Quanzhou Normal UniversityQuanzhou362000China

The design of cost-effective and earth-abundant bifunctional electrocatalysts for highly efficient oxygen evolution reaction(OER)and hydrogen evolution reaction(HER)is important for water splitting as an advanced renewable energy transformation *** this work,the self-supporting amorphous Ni Fe Co P catalyst with nanoporous structure via a facile electrochemical dealloying method is *** from the bicontinuous nanostructure,disordered atomic arrangement,abundant active sites and synergic effect of various transition metals,the as-prepared nanoporous NiFeCoP(np-NiFeCoP)catalyst exhibits good electrocatalytic activity,which achieves the current densities of 10 mA cm^(-2) at low overpotentials of 244 mV and 105 mV for OER and HER in 1.0 M KOH,*** addition,the bifunctional electrocatalyst also shows outstanding and durable electrocatalytic activity in water splitting with a small voltage of 1.62 V to drive a current density of 10 mA cm^(-2) in a two-electrode electrolyzer *** present work would provide a feasible strategy to explore the efficient and low-cost bifunctional electrocatalysts toward overall water splitting.

关键词： Dealloying Amorphous NiFeCoP Water splitting Hydrogen evolution reaction Oxygen evolution reaction

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Rapid and highly effective bacteria-killing by polydopamine/IR780@MnO2–Ti using near-infrared light

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Progress in Natural Science:Materials International 2020年第5期30卷 677-685页

作者： Xingfu Teng Xiangmei Liu zhenduo cui Yufeng Zheng Da-fu Chen Zhaoyang Li Yanqin Liang Shengli Zhu Shuilin Wu Hubei Key Laboratory of Polymer Materials Ministry-of-Education Key Laboratory for the Green Preparation and Application of Functional Materials School of Materials Science & Engineering Hubei University The Key Laboratory of Advanced Ceramics and Machining Technology by the Ministry of Education of China School of Materials Science & Engineering Tianjin University State Key Laboratory for Turbulence and Complex System and Department of Materials Science and Engineering College of Engineering Peking University Beijing JiShuiTan Hospital Beijing Research Institute Orthopaedics & TraumatologyLab Bone Tissue Engineering

Bacterial infections are becoming a serious public health challenge because the abuse of antibiotics worldwide has caused bacterial resistance and the occurrence of superbugs. In this work, a new near-infrared(NIR) photoresponsive coating was constructed on Ti implant material, which was composed of Mn O2, IR780 photosensitizer and polydopamine(PDA). Under the irradiation of 808 nm NIR light, the component of Mn O2in the coating exhibited high photothermal performance, and IR780 could be stimulated to generate ROS as a photosensitizer. The addition of PDA not only improved the cytocompatibility of the composite coating but also strengthened the light absorption ability of the system. Under the irradiation of 808 nm NIR light for 15 min, the composite coating killed 99.94% Staphylococcus aureus and 99.89% Escherichia coli on Ti plates. This rapid and highly effective bactericidal rate was ascribed to the synergistic effects of photothermal performance and photodynamic effect of the coatings excited by NIR light. Cell culture tests showed that PDA/IR780@Mn O2–Ti had good cytocompatibility due to the excellent biocompatibility of PDA and nanostructured surface. Therefore,this surface system will be a very promising plateform to safely and effectively kill bacteria on biomedical devices and implants in a short time.

关键词： Antibacterial Photothermal Photocatalytic MnO 2 Implant

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Eco-friendly and degradable red phosphorus nanoparticles for rapid microbial sterilization under visible light

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Journal of Materials Science & Technology 2021年第8期67卷 70-79页

作者： Qian Wu Xiangmei Liu Bo Li Lei Tan Yong Han Zhaoyang Li Yanqin Liang zhenduo cui Shengli Zhu Shuilin Wu Yufeng Zheng Ministry-of-Education Key Laboratory for the Green Preparation and Application of Functional Materials Hubei Key Laboratory of Polymer MaterialsSchool of Materials Science&EngineeringHubei UniversityWuhan 430062China State Key Laboratory for Mechanical Behavior of Materials School of Materials Science and Engineering.Xi'an Jiaotong UniversityXi'an710049China School of Materials Science&Engineering the Key Laboratory of Advanced Ceramics and Machining Technology by the Ministry of Education of ChinaTianjin UniversityTianjin 300072China State Key Laboratory for Turbulence and Complex System and Department of Materials Science and Engineering College of EngineeringPeking UniversityBeijing 100871China

Pathogens pose a serious challenge to environmental sanitation and a threat to public *** frequent use of chemicals for sterilization in recent years has not only caused secondary damage to the environment but also increased pathogen resistance to drugs,which further threatens public *** address this issue,the use of non-chemical antibacterial means has become a new trend for environmental *** this study,we developed red phosphorus nanoparticles(RPNPs),a safe and degradable photosensitive material with good photocatalytic and photothermal *** red phosphorus nanoparticles were prepared using a template method and *** the irradiation of simulated sunlight for 20 min,the RPNPs exhibited an efficiency of 99.98%in killing Staphylococcus aureus due to their excellent photocatalytic and photothermal *** electron microscopy and ultraviolet–visible spectroscopy revealed that the RPNPs exhibited degradability within eight *** the RPNPs and their degradation products were nontoxic to fibroblast ***,such RPNPs are expected to be used as a new type of low-cost,efficient,degradable,biocompatible,and eco-friendly photosensitive material for environmental disinfection.

关键词： Antibacterial Photocatalytic Photothermal Red phosphorus Photosensitive Nanoparticles

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