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Emerging single-atom nanozymes for catalytic biomedical uses

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Nano Research 2023年第12期16卷 13056-13076页

作者： Shuangfei Cai Wei Zhang rong yang CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety Center of Materials Science and Optoelectronics EngineeringCAS Center for Excellence in NanoscienceNational Center for Nanoscience and TechnologyUniversity of Chinese Academy of SciencesBeijing 100190China Sino-Danish College Sino-Danish Center for Education and ResearchUniversity of Chinese Academy of SciencesBeijing 100049China Institute of Applied Physics and Computational Mathematics Beijing 100088China

The past four years have witnessed booming progress in single-atom nanozymes(SANs),one of the newest generations of nanozymes with atomically dispersed metal sites for catalytic biomedical *** show distinct advantages over their nanoparticle-based counterparts,such as well-defined electronic/geometric structures and complete atomic utilization efficiency,thus offering opportunities to develop advanced nanozymes for practical *** atomically dispersed active centers in SANs could also facilitate the precise regulation of catalytic performance,while probing structure–activity relationship for in-depth understanding of *** this review,we first introduce the synthetic approaches,surface engineering,and characterization techniques of ***,we discuss the enzyme-like properties of SANs,including some strategies for boosting their catalytic ***,we present their biomedical applications,ranging from biosensors,antibacterial uses,antioxidants,to ***,the challenges and opportunities of SANs are prospected.

关键词： single atom metal nanozyme enzyme-like catalysis biomedical

Bioinspired nanomaterials for the treatment of bacterial infections

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Nano Research 2024年第2期17卷 691-714页

作者： Xiaojing Ma Wenjing Tang rong yang Robert F.Smith School of Chemical&Biomolecular Engineering Cornell UniversityIthacaNY 14853USA

Infectious diseases pose a serious threat to global *** immunizations can control most viral infections,bacterial infections,particularly those caused by drug-resistant strains,continue to cause high rates of illness and ***,the creation of new antibiotics has come to a grinding halt in the last ten *** response to this crisis,nanotechnology has emerged as a hopeful solution to tackle drug resistance and enhance treatment results.A large variety of biomimetic nanomaterials,termed nanozymes,have demonstrated strong antimicrobial *** the inherent toxicity of nanomaterials is a concern,recent studies have harnessed the stimuli-responsiveness of nanomaterials to enable local and/or targeted delivery to reduce the treatment side ***,the physicochemical versatility of nanomaterials affords many degrees of freedom that enable rational design of smart or autonomous therapeutics,which cannot be achieved using conventional *** design straddles the fields of catalysis,nanoscience,microbiology,and translational *** provide an overview of this interdisciplinary landscape,this review is organized based on composition into lipid,metal,metal oxide,and non-metallic *** as a delivery vehicle enhance bioavailability and reduce ***-and metal oxide-based nanomaterials inhibit bacterial growth by mimicking natural enzymatic activities such as peroxidase(POD)and ***,carbon-,polymer-,and cell membrane-based nanomaterials are combined into a discussion on non-metallic *** the end of this review,potentially fruitful directions for future bioinspired nanomaterials in infectious disease treatment are included.

关键词： bioinspired nanomaterial bacteria infectious disease antimicrobial liposome nanozyme

Complementary and alternative medicine in ADHD treatment:more soundly designed clinical trials needed

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World Journal of Pediatrics 2019年第5期15卷 516-519页

作者： rong-Wang yang rong Li Department of Child Psychology Children's HospitalZhejiang University School of Medicine3333 Binsheng RoadHangzhou 310052China

We read with great interest the article[1]by Dehbokri et *** in the Journal *** authors carried out a double-blind,randomized clinical trials to study the effects of vitamin D supplementation on children with attentio... 详细信息

关键词： clinical vitamin al.

An Experimental Study for Intelligent Logistics:A Middleware Approach

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Chinese Journal of Electronics 2016年第3期25卷 561-569页

作者： yang rong LI Bing HU Yan College of Computer Science and Technology Hubei University of Science and Technology International School of Software Wuhan University Science and Technology on Integrated Information System Laboratory Institute of SoftwareUniversity of Chinese Academy of Sciences

Recent years have witnessed a rapid growth in using Internet of things(Io T), which facilitates and simultaneously raises challenges for the intelligent logistics. The real-world devices can provide their functionality as Web services. Because of the dynamicity and heterogeneity of the target networking environment, the services offered by Io T resources cannot be composed by simply extending existing Service oriented architecture(SOA) approaches. Logistics, which consists of a complex network of organizations and business processes, must be monitored in real time. Based on the proper understanding of the possible exceptions, we propose a middleware approach to solve the logistics service composition in Io T, where a decentralized coordination mechanism is used to monitor the component services with few resources efficiently. Through a set of experiments, the effectiveness and robustness of our approach are evaluated.

关键词： Internet of things(IoT) Intelligent logistics Exceptions Monitoring

First-Principles Study of Structural,Magnetic,Electronic and Elastic Properties of PuC_2

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Communications in Theoretical Physics 2016年第10期65卷 447-452页

作者： rong yang Institute of Atomic and Molecular Physics Sichuan UniversityChengdu 610065China College of Materials Science and Engineering Chongqing Jiaotong UniversityChongqing 400074China Institute of Finance&Trade Chongqing City Management CollegeChongqing 401331China Science and Technology on Surface Physics and Chemistry Laboratory P.O.Box 718-35Mianyang 621907China

We perform first-principles calculations of crystal structure,magnetism,electronic structure,chemical bonding and elastic properties for PuC_2 using the standard local spin-density approximation(LSDA)+U *** use of the Hubbard term to describe the 5f electrons of plutonium is discussed according to the lattice parameters,magnetism and densities of *** calculated lattice constants and magnetism are in good agreement with the experimental data or other theoretical *** is shown that the total densities of states at the Fermi energy level mainly come from the contribution of narrow f *** Pu-C bonds of PuC_2 have a mixture of covalent character and ionic character,while covalent character is stronger than ionic *** C1-C2 bonding has strong covalent character because of sp^2 hybridization between C ***,the elastic properties of PuC_2 are *** hope that our results can provide a useful reference for further theoretical and experimental research on PuC_2.

关键词： PuC_2 LSDA+U chemical bonding elastic properties

Necessary and Suffcient Conditions for Distinguishability of Linear Control Systems

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Acta Mathematicae Applicatae Sinica 2014年第2期30卷 473-482页

作者： Hong-wei LOU rong yang School of Mathematical Sciences Fudan University

Distinguishability plays a crucial rule in studying observability of hybrid system such as switched system. Recently, for two linear systems, Lou and Si gave a condition not only necessary but also sufficient to the distinguishability of linear systems. However, the condition is not easy enough to verify. This paper will give a new equivalent condition which is relatively easy to verify.

关键词： distinguishability linear control systems necessary and sufficient condition

Preparation and characterization of high photoactive TiO_2 catalyst using the UV irradiation-induced sol-gel method

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Journal of University of Science and Technology Beijing 2006年第4期13卷 350-354页

作者： Jianhua Liu rong yang Songmei Li School of Materials Science and Engineering Beijing University of Aeronautics ＆ Astronautics Beijing 100083 China

High photoactive TiO2 catalyst was prepared using the sol-gel method through UV irradiation during the formation stage of nuclei. The surface morphology and microstructure of the prepared catalyst were characterized using scanning electron microscopy （SEM）, X-ray diffraction patterns （XRD）, and Fourier transform infrared spectroscopy （FF-IR）. The photoactivity was evaluated by the degradation of methylene blue. The results show that the photocatalysis of the prepared catalyst is higher than that of conventional heat-treated particles. The higher photoactivity is a combined result of favorable microstructure, appropriate hydroxyl groups, and active sites of Ti^3＋ ions on the surface of TiO2. It is concluded that the ultraviolet irradiation-induced sol-gel method is an effective method to enhance the photocatalysis of TiO2.

关键词： titanium oxide photocatalysis sol-gel ultraviolet irradiation

Synthesis and electrochemical properties of Li_2MnSiO_4/C nanoparticles via polyol process

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Rare Metals 2010年第5期29卷 511-514页

作者： LIU Wengang XU Yunhua yang rong School of Material Science and Engineering Xi 'an University of Architecture and Technology Xi 'an 710055 China School of Science Xi 'an University of Technology Xi 'an 710048 China

Carbon-coated lithium manganese silicate （Li2MnSiO4/C） nanoparticles were synthesized by polyol process. X-ray diffraction （XRD） patterns of the obtained materials exhibit a good fit with that of the Li2MnSiO4 phase. Field emission scanning electron microscopy （FESEM） images of the obtained samples show that the particle size is only tens of nanometers. The high resolution transmission electron microscopy （HRTEM） analysis shows that the Li2MnSiO4 nanoparticles are surrounded by a very thin film of amorphous carbon. The composite prepared through polyol process shows good performance as cathode materials in lithium cells at room temperature. The charge capacity of the Li2MnSiO4/C samples is 219 mAh/g （about 1.3 Li^＋ per unit formula extracted）, and the discharge capacity is 132 mAh/g （about 0.8 Li^＋ per unit formula inserted） in the first cycle in the voltage range of 1.5-4.8 V. A good capacity cycling maintenance of 81.8% after 10 cycles was obtained.

关键词： lithium ion batteries cathode materials electrochemical properties polyol process silicates

Treatment of coke plant wastewater by SND fixed biofilm hybrid system

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Journal of Environmental Sciences 2007年第2期19卷 153-159页

作者： QI rong yang Kun YU Zhao-xiang Department of Chemistry Tongji University Shanghai 200092 China

In this article, coke plant wastewater was treated by a simultaneous nitrifying and denitrifying （SND） fixed biofilm hybrid system. The results showed that suitable parameters of the system were important for the performance of the bio-degradation system. The chemical oxygen demand （COD） removal efficiency in this system was satisfactory, higher than 94%, and ammonia nitrogen was higher than 95%. The effluent COD concentration could meet the discharge standard, except for very few situations. The results showed that a sufficient carbon source was important for making ammonia nitrogen concentration meet the discharge standard. Then the TiN removal efficiency in this system can be brought higher than 94%. Dissolved oxygen （DO） is very important to the performance of the SND bio-degradation system, and the suitable DO is about 3.5-4.0 mg/L at the forepart of reactor. In addition, the performance of the system was almost not affected by pH value. The results show that the system is feasible to treat coke plant wastewater.

关键词： coke plant wastewater SND fixed biofilm ammonia nitrogen COD carbon source