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Understanding Bridging Sites and Accelerating Quantum Efficiency for Photocatalytic CO_(2) Reduction

Nano-Micro Letters 2024年第1期16卷 68-84页

作者： Kangwang Wang Zhuofeng Hu Peifeng Yu Alina M.Balu Kuan Li Longfu Li Lingyong Zeng Chao Zhang Rafael Luque Kai Yan huixia luo School of Materials Science and Engineering State Key Laboratory of Optoelectronic Materials and TechnologiesGuangdong Provincial Key Laboratory of Magnetoelectric Physics and DevicesKey Lab of Polymer Composite and Functional MaterialsSun Yat-Sen UniversityNo.135Xingang Xi RoadGuangzhou 510275People’s Republic of China School of Environmental Science and Engineering Sun Yat-Sen UniversityNo.135Xingang Xi RoadGuangzhou 510275People’s Republic of China Departamento de Química Orgánica Universidad de CórdobaCampus Universitario de RabanalesEdificio Marie Curie(C3)14014 CórdobaSpain Center for Refining and Advanced Chemicals King Fahd University of Petroleum and Minerals31261 DhahranSaudi Arabia Universidad ECOTEC Km 13.5 SamborondónEC092302 SamborondónEcuador

We report a novel double-shelled nanoboxes photocatalyst architecture with tailored interfaces that accelerate quantum efficiency for photocatalytic CO_(2) reduction reaction(CO_(2)RR)via Mo–S bridging bonds sites in S_(v)–In_(2)S_(3)@2H–MoTe_(2).The X-ray absorption near-edge structure shows that the formation of S_(v)–In_(2)S_(3)@2H–MoTe_(2) adjusts the coordination environment via interface engineering and forms Mo–S polarized sites at the *** interfacial dynamics and catalytic behavior are clearly revealed by ultrafast femtosecond transient absorption,time-resolved,and in situ diffuse reflectance–Infrared Fourier transform spectroscopy.A tunable electronic structure through steric interaction of Mo–S bridging bonds induces a 1.7-fold enhancement in S_(v)–In_(2)S_(3)@2H–MoTe_(2)(5)photogenerated carrier concentration relative to pristine S_(v)–In_(2)S_(3).Benefiting from lower carrier transport activation energy,an internal quantum efficiency of 94.01%at 380 nm was used for photocatalytic CO_(2)*** study proposes a new strategy to design photocatalyst through bridging sites to adjust the selectivity of photocatalytic CO_(2)RR.

关键词： Quantum efficiency Electronic structure Steric interaction Bridging sites CO_(2)reduction

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医院智慧药房建设现状分析

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中国药业 2024年第10期33卷 30-33页

作者：黄丽华罗辉霞四川省人民医院医疗集团川投西昌医院四川西昌615000

目的探讨医院智慧药房建设现状。方法检索中国知网、维普、万方、PubMed、UpToDate等数据库,获取2015年1月至2022年12月医院智慧药房建设相关文献,分析国内外医院智慧药房建设现状和差距,国内医院智慧药房建设难点,并从设备、环境、人... 详细信息

目的探讨医院智慧药房建设现状。方法检索中国知网、维普、万方、PubMed、UpToDate等数据库,获取2015年1月至2022年12月医院智慧药房建设相关文献,分析国内外医院智慧药房建设现状和差距,国内医院智慧药房建设难点,并从设备、环境、人员三方面探讨风险管控策略。结果共获得文献1520篇,筛选得高质量文献37篇。文献显示,我国医院智慧药房建设起步较晚,相应设备涉及智能药柜、处方前置审核系统、自动发药机等,较国外部分发达国家还存在自动化药品供应设备普及率较低、前置审方软件质量参差不齐、临床药学系统功能局限等差距。此外,我国医院智慧药房建设还存在资金需求大、缺乏统一建设和验收标准等问题,且随着智慧药房的广泛使用,设备、人员、环境等方面的风险也不容忽视。针对以上风险点,许多传统药房的管理方法(如6S管理法、PDCA管理法、品管圈等)同样也适用于智慧药房的管理。结论智慧药房的建设和使用能更好地实现药学服务的高效率、高质量、高精准度。国内医院智慧药房的建设和普及需要资金支持及相关监管标准的完善和出台。

关键词：智慧药房精准化医疗智能化设备药学服务风险管控发展现状药事管理

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Green fabrication of nickel-iron layered double hydroxides nanosheets efficient for the enhanced capacitive performance

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Green Energy & Environment 2022年第5期7卷 1053-1061页

作者： Yuchen Wang Zuo Chen Man Zhang Yaoyu Liu huixia luo Kai Yan School of Environmental Science and Engineering Sun Yat-sen UniversityGuangzhou510275China Key Lab of Polymer Composite&Functional Materials School of Materials Science and EngineeringSun Yat-sen UniversityGuangzhou510275China Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation Technology Guangzhou510275China

Rational synthesis of robust layered double hydroxides(LDHs) nanosheets for high-energy supercapacitors is full of ***,we reported an ultrasonication-assisted strategy to eco-friendly fabricate NiFe-LDHs nanosheets for the enhanced capacitive *** experimental results combined with different advanced characterization tools document that the utilization of ultrasonication has a profound effect on the morphology and thickness of the as-obtained NiFe-LDHs,alternatively affecting the capacitive *** shows that NiFe-LDHs nanosheets prepared with 2-h ultrasonic treatments display the exceptional capacitive performance because of the synergetic effect of ultrathin thickness,large specific surface area,and high mesoporous *** maximum specific capacitance of Ni_(3) Fe_(1)-LDHs nanosheets with the thickness of 7.39 nm and the specific surface area of 77.16 m~2 g^(-1) reached 1923 F g^(-1),which is competitive with most previously reported *** addition,the maximum specific energy of the assembled NiFe-LDHs//AC asymmetric supercapacitor achieved 49.13 Wh kg^(-1) at400 W kg^(-1).This work provides a green technology to fabricate LDHs nanosheets,and offers deep insights for understanding the relationship between the morphology/structure and capacitive behavior of LDHs nanosheets,which is helpful for achieving high-performance LDHs-based electrode materials.

关键词： performance double sheets

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Biomass-derived porous carbon highly efficient for removal of Pb(Ⅱ) and Cd(Ⅱ)

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Green Energy & Environment 2019年第4期4卷 414-423页

作者： Anqi Wang Zhikeng Zheng Ruiqi Li Di Hu Yiran Lu huixia luo Kai Yan Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation Technology School of Environmental Science and EngineeringSun Yat-Sen University135 Xingang Xi RoadGuangzhou 510275China School of Engineering Brown UniversityProvidenceRI 02906United States School of Material Science and Engineering Sun Yat-Sen University135 Xingang Xi RoadGuangzhou 510275China

The utilization of abundant and renewable biomass to fabricate advanced functional materials is considered a promising route for environmental ***,Lignin-based porous carbon with layered graphene-like structure(LPC)is successfully synthesized and applied to efficiently remove Pb(Ⅱ)and Cd(Ⅱ).The as-synthesized LPC materials are systematically characterized and these results show that LPC has a porous graphene-like structure,facilitating the diffusion and immobilization of heavy metal *** influence of different reaction parameters(solution pH,initial concentration of metal ions,contact time and adsorbent amount)on the adsorption performance is investigated in *** results demonstrate that LPC can achieve superior adsorption capacities of 250.5 mg·g^-1 for Pb(Ⅱ)and 126.4 mg·g^-1 for Cd(Ⅱ),which are far superior to the previously reported ***-second order kinetics model and Freundlich isotherm model describe the adsorption process ***,the exhausted LPC can be regenerated easily and exhibits the removal efficiency of 96%and 92%for Pb(Ⅱ)and Cd(Ⅱ)after five continuous runs,*** study shows a sustainable strategy for the design of porous carbon material from na?ve biomass and highlights the great potential in wastewater treatment.

关键词： Porous carbon Layered structure Heavy metals Adsorption kinetics Recyclability

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硫酸银敷料联合负压封闭引流治疗难愈性创面的疗效观察

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中国美容医学 2024年第4期33卷 45-48页

作者：潘韦行张栖玮罗辉霞贾伟内江市第一人民医院美容整形烧伤科四川内江641000 内江市第一人民医院检验科四川内江641000 内江市第一人民医院甲状腺乳腺科四川内江641000 宝鸡市中心医院烧伤整形科陕西宝鸡721000

目的:探究脂质水胶体硫酸银敷料结合负压封闭引流治疗难愈性创面的临床疗效。方法:选取2022年2月-2022年12月来笔者医院就诊的80例慢性难愈性创面患者,按随机单盲分组法分为实验组和对照组,每组40例。对照组采用负压封闭引流技术进行治... 详细信息

目的:探究脂质水胶体硫酸银敷料结合负压封闭引流治疗难愈性创面的临床疗效。方法:选取2022年2月-2022年12月来笔者医院就诊的80例慢性难愈性创面患者,按随机单盲分组法分为实验组和对照组,每组40例。对照组采用负压封闭引流技术进行治疗,实验组采用硫酸银敷料联合负压封闭引流技术治疗。观察比较两组创面愈合情况、炎症指标水平、创面疼痛程度及患者睡眠质量。结果:两次更换敷料时,实验组细菌清除率均高于对照组(P0.05)。结论:脂质水胶体硫酸银敷料结合负压封闭引流治疗慢性难愈性创面能抑制细菌繁殖,降低感染风险,促进创面愈合,效果显著。

关键词：脂质水胶体硫酸银敷料负压封闭引流难愈性创面创面愈合细菌清除率

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Facile synthesis of Ni-,Co-,Cu-metal organic frameworks electrocatalyst boosting for hydrogen evolution reaction

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Journal of Materials Science & Technology 2021年第13期72卷 172-179页

作者： Man Zhang Di Hu Zhenhao Xu Biying Liu Mebrouka Boubeche Zuo Chen Yuchen Wang huixia luo Kai Yan Guangdong Provincial Key Laboratory of Environmental Pollution and Remediation Technology School of Environmental Science and EngineeringSun Yat-sen UniversityGuangzhou 510275China Key Lab of Polymer Composite&Functional Materials School of Materials Science and EngineeringSun Yat-sen UniversityGuangzhou510275China

The conductive metal-organic frameworks(MOFs)are suggested as the ideal electrocatalysts for hydrogen evolution reaction(HER)because of the high utilization of metal *** design and facile synthesis of MOFs with large specific surface area,proper metals as center,and tunable chemical components is still full of ***,we report the facile synthesis three types of porous MOFs by regulating metal center using benzene-1,3,5-tricarboxylic acid(H3 BTC)as organic ligand and have successfully synthesized the rhombic octahedral Cu-BTC,rod-shaped Co-BTC and spherical Ni-BTC materials with large specific surface area ranged in 350-500 m^(2)g^(-1).These as-prepared MOFs materials exhibit high performance of HER in 0.5 M H_(2)SO_(4).Ni-BTC material exhibits the lowest overpotential of 53 mV at 10 mA cm-2 and the smallest Tafel slope of 62 mV dec^(-1)than those of Cu-BTC(270 mV,155 mV dec^(-1))and Co-BTC(123 mV,100 mV dec^(-1)),which are much superior to these previously reported MOFs *** addition,the fast catalytic kinetic of Ni-BTC was confirmed by the smaller charge transfer resistance(Rct)value of 0.9Ωand larger electrochemical active surface area(ECSA)of 35.5 cm^(2)than those of Cu-BTC(8.2Ω,22.5 cm^(2))and Co-BTC(1.9Ω,27.7 cm^(2)).Because of the structural advantage and large ECSA,the turnover frequency(TOF)value of Ni-BTC reaches up to 0.041 s-1 at 120 mV overpotential,which is 20.5 and 2.6 times greater than that of Cu-BTC(0.002 s-1)and Co-BTC(0.016 s-1).Besides,these three types of MOFs exhibited excellent durability over 12 *** study unfolds diverse insights into the design and facile synthesis of MOFs for electrochemical energy conversion system.

关键词： Metal-organic frameworks Hydrogen evolution reaction Activity Overpotential Durability

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Extremely strong coupling s-wave superconductivity in the medium-entropy alloy TiHfNbTa

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Science China(Physics,Mechanics & Astronomy) 2023年第7期66卷 127-135页

作者： Lingyong Zeng Xunwu Hu Mebrouka Boubeche Kuan Li Longfu Li Peifeng Yu Kangwang Wang Chao Zhang Kui Jin Dao-Xin Yao huixia luo School of Materials Science and Engineering State Key Laboratory of Optoelectronic Materials and TechnologiesKey Lab of Polymer Composite&Functional MaterialsGuangdong Provincial Key Laboratory of Magnetoelectric Physics and DevicesSun Yat-Sen UniversityGuangzhou 510275China Guangdong Provincial Key Laboratory of Magnetoelectric Physics and Devices Center for Neutron Science and TechnologySchool of PhysicsSun Yat-Sen UniversityGuangzhou 510275China Songshan Lake Materials Laboratory University Innovation TownDongguan 523808China Beijing National Laboratory for Condensed Matter Physics Institute of PhysicsChinese Academy of SciencesBeijing 100190China Key Laboratory of Vacuum Physics School of Physical SciencesUniversity of Chinese Academy of SciencesBeijing 100049China

Here we report a TiHfNbTa bulk medium-entropy alloy(MEA)superconductor crystallized in the body-centered cubic structure with the unit cell parameter a=3.35925?,which is synthesized by an arc melting *** properties of the TiHfNbTa are studied by employing magnetic susceptibility,resistivity,and specific heat *** results show a bulk superconducting transition temperature(Tc)of around 6.75 *** lower and upper critical fields for TiHfNbTa are45.8 m T and 10.46 T,***-principles calculations show that the d electrons of Ti,Hf,Nb,and Ta are the main contribution to the total density of states near the Fermi *** results indicate that the superconductivity is a conventional swave type with extremely strong coupling(△C_(el)/γ_(n)T_(c)=2.88,2△_(0)/k_(B)T_(c)=5.02,and λ_(ep)=2.77).The extremely strong coupling behavior in the s-wave type Ti Hf Nb Ta MEA superconductor is unusual because it generally happens in cuprates,pnictides,and other unconventional superconductors.

关键词： medium-entropy alloy superconductivity s-wave type TiHfNbTa

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高熵超导体研究进展

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科学通报 2024年第20期69卷 2951-2963页

作者：曾令勇李宽李龙夫余沛峰王康旺陈睿张超项载琛石磊张云蔚江恺瑶罗惠霞中山大学材料科学与工程学院广州510006 中山大学光电材料与技术国家重点实验室广州510006 中山大学广东省磁电物性分析与器件重点实验室广州510006 中山大学聚合物复合材料及功能材料教育部重点实验室广州510006 中山大学物理学院广州510275 澳门城市大学数据科学学院中国澳门999078

高熵材料是近年来许多领域研究的一类新型材料,高熵的原理为材料的设计和性能定制提供了更大的自由度.高熵材料主要有高熵合金和高熵陶瓷.自2014年第一个高熵超导体被发现以来,超导电性一直是高熵材料领域的研究热点之一.人们在一些高... 详细信息

高熵材料是近年来许多领域研究的一类新型材料,高熵的原理为材料的设计和性能定制提供了更大的自由度.高熵材料主要有高熵合金和高熵陶瓷.自2014年第一个高熵超导体被发现以来,超导电性一直是高熵材料领域的研究热点之一.人们在一些高熵超导体中观察到了许多奇特的物性,如高压下超导转变温度T_(c)基本保持不变、极强电声耦合的超导电性、能带结构中存在狄拉克点等.然而,高熵超导材料的研究才刚刚开始,仍存在许多未知.另外,元素组成和平均价电子数对高熵超导体的T_(c)起着重要作用.高熵合金的超导行为似乎不同于常规合金超导体、铜氧化物超导体、铁基超导体和非晶体超导体,表明它们可以视为一类单独的超导体.结合高熵材料的优异力学和物理性能,高熵超导体有望在极端条件下服役.本文简要介绍了高熵合金超导体、高熵陶瓷超导体和高熵超导体薄膜的最新研究进展,并对高熵超导体进行了初步的展望.我们相信在高熵超导材料这一研究领域将会发现许多新的物理现象.

关键词：超导电性拓扑能带高熵合金高熵陶瓷高熵薄膜

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Superconductivity in CuIr_(2-x)Al_(x)Te_(4) telluride chalcogenides

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Chinese Physics B 2022年第3期31卷 538-544页

作者： Dong Yan Lingyong Zeng Yijie Zeng Yishi Lin Junjie Yin Meng Wang Yihua Wang Daoxin Yao huixia luo School of Materials Science and Engineering State Key Laboratory of Optoelectronic Materials and TechnologiesKey aboratory of Polymer Composite&Functional MaterialsGuangzhou Key Laboratory of Flexible Electronic Materials and Wearable DevicesSun Yat Sen UniversiyGuangzhou 510275China Center for Neuron Science and Technology School of PhysicsSun Ya-Sen UniversityGuangzhou 510275China State Key Laboratory of Surface Physics and Department of Physics Fudan UniversityShanghai 200433China Shanghai Research Center for Quantum Sciences Shanghai 201315China Key Laboratory of Functional Molecular Solids Ministry of EducationCollege of Chenistry and Materials ScienceAnhui Normal UniversityWuhu 241002China College of Science Hangzhou Dianzi UniversityHangzhou 310018China

The relationship between charge-density-wave(CDW) and superconductivity(SC), two vital physical phases in condensed matter physics, has always been the focus of scientists’ research over the past decades. Motivated by this research hotspot, we systematically studied the physical properties of the layered telluride chalcogenide superconductors CuIr_(2-x)Al_(x)Te_(4)(0 ≤x≤ 0.2). Through the resistance and magnetization measurements, we found that the CDW order was destroyed by a small amount of Al doping. Meanwhile, the superconducting transition temperature(T_(c)) kept changing with the change of doping amount and rose towards the maximum value of 2.75 K when x = 0.075. The value of normalized specific heat jump(△C/γT_(c)) for the highest T_(c) sample CuIr_(2-x)Al_(x)Te_(4)was 1.53, which was larger than the BCS value of 1.43 and showed the bulk superconducting nature. In order to clearly show the relationship between SC and CDW states,we propose a phase diagram of T_(c) vs. doping content.

关键词： layered telluride chalcogenide superconductivity charge-density-wave CuIr_(2-x)Al_(x)Te_(4)

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Superconductivity and Charge Density Wave in Iodine-Doped CuIr_(2)Te_(4)

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Chinese Physics Letters 2021年第3期38卷 81-88页

作者： Mebrouka Boubeche Jia Yu Li Chushan Wang Huichao Lingyong Zeng Yiyi He Xiaopeng Wang Wanzhen Su Meng Wang Dao-Xin Yao Zhijun Wang huixia luo School of Materials Science and Engineering State Key Laboratory of Optoelectronic Materials and Technologiesand Key Lab of Polymer Composite&Functional MaterialsSun Yat-Sen UniversityGuangzhou 510275China School of Physics Sun Yat-Sen UniversityGuangzhou 510275China Beijing National Laboratory for Condensed Matter Physics and Institute of PhysicsChinese Academy of SciencesBeijing 100190China University of Chinese Academy of Sciences Beijing 100049China

We report a systematic investigation on the evolution of the structural and physical properties,including the charge density wave(CDW) and superconductivity of the polycrystalline CuIr_(2)Te_(4-x)Ix for 0.0 ≤x≤ *** diffraction results indicate that both of a and c lattice parameters increase linearly when 0.0 ≤ x ≤ *** resistivity measurements indicate that the CDW is destabilized with slight x but reappears at x≥0.9 with very high ***,the superconducting transition temperature Tc enhances as x increases and reaches a maximum value of around 2.95 K for the optimal composition CuIr_(2)Te_(1.9)I_(0.1) followed by a slight decrease with higher iodine doping *** specific heat jump(ΔC/γTc) for the optimal composition CuIr_(2)Te_(3.9)I_(0.1) is approximately 1.46,which is close to the Bardeen-Cooper-Schrieffer value of 1.43,indicating that it is a bulk *** results of thermodynamic heat capacity measurements under different magnetic fields |Cp(T,H)],magnetization M(T,H) and magneto-transport ρ(T,H) measurements further suggest that CuIr_(2)Te_(4-x)Ix bulks are type-Ⅱ ***,an electronic phase diagram for this CuIr_(2)Te_(4-x)Ix system has been *** present study provides a suitable material platform for further investigation of the interplay of the CDW and superconductivity.

关键词： resistivity magnetization diagram

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