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Polydopamine modified CuS@HKUST for rapid sterilization through enhanced photothermal property and photocatalytic ability

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Rare Metals 2022年第2期41卷 663-672页

作者： Dong-Lin Han Peng-Li Yu Xiang-Mei Liu Ying-De Xu Shui-Lin Wu College of Materials Science and Engineering Jilin Institute of Chemical TechnologyJilin 132022China School of Materials Science and Engineering the Key Laboratory of Advanced Ceramics and Machining Technology by the Ministry of Education of ChinaTianjin UniversityTianjin 300072China Ministry-of-Education Key Laboratory for the Green Preparation and Application of Functional Materials Hubei Key Laboratory of Polymer MaterialsSchool of Materials Science and EngineeringHubei UniversityWuhan 430062China

Because of the impressive evolution of the drugresistant bacteria,the development of efficient,antibioticfree agent is in great ***,an efficient antibacterial agent,CuS@HKUST-polydopamine(PDA),was exquisitely designed,where the Cu-based metal-organic framework(MOF)—HKUST nanoparticles served as the porous frame,and the CuS was synthesized within the structure of the MOF through the process of in situ sulfuration,followed with polydopamine(PDA)covering the *** structure of the HKUST preventing the aggregation of the CuS nanoparticles,which improved their photothermal and photocatalytic *** covering with PDA,the nanoparticles’abilities to produce heat and free radicals were further *** was because that the PDA itself could transform light into heat,which not only benefited the photothermal property,but also improved the photocatalytic property of the nanoparticles by accelerating the charge ***,the PDA could also transfer the photo-induced electrons fast and thus prevented the recombination of the photo-generated electron–hole pairs,which resulted in the enhanced ability to produce free *** a result,under light irradiation,the antibacterial efficiency of the CuS@HKUST-PDA against Staphylococcus aureus(***)and Escherichia coli(***)could reach 99.77%and 99.57%.Hence,the synthesized CuS@HKUST-PDA can be promising for anti-infection and sterilization application without using antibiotics.

关键词： Antibacterial CuS Polydopamine(PDA) Photothermal Photocatalytic Metal-organic framework(MOF)

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Tailored large-particle quantum dots with high color purity and excellent electroluminescent efficiency

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science Bulletin 2025年第6期70卷 905-913页

作者： Bo-Chen Liu Qizhong Lin Shuang-Qiao Sun Qi Sun Xing Peng Xinyuan Chen Yang Li Yue-Min Xie Shuit-Tong Lee Man-Keung Fung Jiangsu Key Laboratory for Carbon-Based Functional Materials&Devices Institute of Functional Nano&Soft Materials(FUNSOM)Soochow UniversitySuzhou 215123China Macao Institute of Materials Science and Engineering(MIMSE) MUST-SUDA Joint Research Center for Advanced Functional MaterialsZhuhai MUST Science and Technology Research InstituteMacao University of Science and TechnologyMacao 999078China Jiangsu Key Laboratory of Advanced Negative Carbon Technologies Soochow UniversitySuzhou 215123China Institute of Organic Optoelectronics(IOO) Jiangsu Industrial Technology Research Institute(JITRI)Suzhou 215200China Fujian Science&Technology Innovation Laboratory for Optoelectronic Information of China Fuzhou 350108China Poly Optoelectronics Tech.Ltd. Jiangmen 529020China

High-quality quantum dots(QDs)possess superior electroluminescent efficiencies and ultra-narrow emission linewidths are essential for realizing ultra-high definition QD light-emitting diodes(QLEDs).However,the synthesis of such QDs remains *** this study,we present a facile high-temperature successive ion layer adsorption and reaction(HT-SILAR)strategy for the growth of precisely tailored Zn_(1-x)Cd_(x)Se/ZnSe shells,and the consequent production of high-quality,large-particle,alloyed red CdZnSe/Zn_(1-x)Cd_(x)Se/ZnSe/ZnS/CdZnS *** transitional Zn1 xCdxSe/ZnSe shells serve to effectively suppress heavy hole energy level splitting and weaken the exciton-longitudinal optical phonon coupling of QDs,thus facilitating the formation of highly luminescent QDs with a near-unity photoluminescence quantum yield of 97.8%and narrow emission with a full width at half maximum of 17.1 *** addition,the introduction of transitional shells can extend the particle size of QDs to 19.0 nm,which is beneficial for efficient carrier recombination and reduced Joule heating in QD-based *** a result,the fabricated QLEDs can achieve a record external quantum efficiency of 38.2%,luminance over 120,000 cd m^(-2),and exceptional operational stability T95(tested at 1,000 cd m^(-2))of 24,100 *** findings provide new ave-nues for synthesizing high-quality QDs with high color purity.

关键词： Quantum dots Light-emitting diodes High color purity High efficiency Large particles

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Rational design of a hollow porous structure for enhancing diffusion kinetics of K ions in edge-nitrogen doped carbon nanorods

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Nano Research 2022年第9期15卷 8109-8117页

作者： Ping Niu Yang Yang Zhiqiang Li Gaohui Ding Lingzhi Wei Ge Yao Helin Niu Yulin Min Fangcai Zheng Qianwang Chen Institutes of Physical Science and Information Technology Key Laboratory of Structure and Functional Regulation of Hybrid MaterialsAnhui UniversityMinistry of EducationHefei 230601China Hefei National Laboratory for Physical Science at Microscale and Department of Materials Science&Engineering University of Science and Technology of ChinaHefei 230026China Key Laboratory of Functional Inorganic Material Chemistry of Anhui Province Anhui UniversityHefei 230601China Shanghai Key Laboratory of Materials Protection and Advanced Materials Electric Power Shanghai Engineering Research Center of Energy-Saving in Heat Exchange SystemsShanghai University of Electric PowerShanghai 200090China

The high electrical conductivity makes it possible for one-dimensional(1D)carbon materials to be used as the promising anodes for potassium ion batteries(PIBs),however,the sluggish diffusion kinetics caused by large-sized potassium ions(K^(+))limits their practical applications in energy storage *** this work,hollow carbon nanorods were rationally designed as a case to verify the superiority of 1D hollow structure to improve the diffusion kinetics of K^(+).Simultaneously,edge-N(pyridinic-N and pyrrolic-N)atoms were also introduced into 1D hollow carbon structure,which can provide ample active sites and defects in graphitic lattices to adsorb K^(+),providing extra capacitive storage *** expected,the optimized edge-N doped hollow carbon nanorods(ENHCRs)exhibits a high reversible capacity of 544 mAh·g^(−1)at 0.1 A·g^(−1)after 200 *** at 5 A·g^(−1),it displays a long-term cycling stability with 255 mAh·g^(−1)over 10,000 *** electrochemical measurements confirm that the hollow structure is favorable to improve the transfer kinetics of K^(+)during *** the theoretical calculations demonstrate that edge-N doping can enhance the local electronegativity of graphitic lattices to adsorb much more K^(+),where edge-N doping synergizes with 1D hollow structure to achieve enhanced K^(+)-storage performances.

关键词： carbon materials edge-nitrogen hollow structure theoretical calculation batteries

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Optimizing energy harvesting performance by tailoring ferroelectric/relaxor behavior in KNN-based piezoceramics

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Journal of advanced Ceramics 2022年第6期11卷 935-944页

作者： Yu HUAN Xinjian WANG Wenyu YANG Limin HOU Mupeng ZHENG Tao WEI Xiaohui WANG School of Materials Science and Engineering University of JinanJinan 250022China Key Laboratory of Advanced Functional Materials Faculty of Materials and ManufacturingBeijing University of TechnologyBeijing 100124China State Key Laboratory of New Ceramics and Fine Processing School of Materials Science and EngineeringTsinghua UniversityBeijing 100084China

Piezoelectric energy harvesters(PEHs)fabricated using piezoceramics could convert directly the mechanical vibration energy in the environment into electrical *** high piezoelectric charge coefficient(d_(33))and large piezoelectric voltage coefficient(g_(33))are key factors for the high-performance ***,high d_(33)and large g_(33)are difficult to simultaneously achieve with respect to g_(33)=d_(33)/(e_(0)e_(r))and d_(33)=2Qe_(0)e_(r)P_(r).Herein,the energy harvesting performance is optimized by tailoring the CaZrO_(3)content in(0.964−x)(K_(0.52)Na_(0.48))(Nb_(0.96)Sb_(0.04))O_(3)-0.036(Bi_(0.5)Na_(0.5))ZrO_(3)-xCaZrO_(3)***,the doping CaZrO_(3)could enhance the dielectric relaxation due to the compositional fluctuation and structural disordering,and thus reduce the domain size to~30 nm for x=0.006 *** nanodomains switch easily to external electric field,resulting in large ***,the rhombohedral-orthorhombic-tetragonal phases coexist in x=0.006 sample,which reduces the polarization anisotropy and thus improves the piezoelectric *** multiphase coexistence structures and miniaturized domains contribute to the excellent piezoelectric properties of d_(33)(354 pC/N).Furthermore,the dielectric relative permittivity(ε_(r))reduces monotonously as the CaZrO_(3)content increases due to the relatively low ion polarizability of Ca^(2+)and Zr^(4+).As a result,the optimized energy conversion coefficient(d_(33)×g_(33),5508×10^(−15)m^(2)/N)is achieved for x=0.006 *** importantly,the assembled PEH with the optimal specimen shows the excellent output power(~48 mW)and lights up 45 red commercial light-emitting diodes(LEDs).This work demonstrates that tailoring ferroelectric/relaxor behavior in(K,Na)NbO_(3)-based piezoelectric ceramics could effectively enhance the electrical output of PEHs.

关键词： piezoelectric energy harvesters(PEHs) potassium sodium niobate(KNN) relaxor ferroelectric miniaturized domains multiphase coexistence

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Room-temperature degradation of o-xylene in simulated air using an online-regenerable plasma-catalysis reactor with low amounts of nanosized noble metals on Co_(3)O_(4)

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Plasma science and technology 2023年第10期25卷 26-36页

作者：狄书成徐家成姚水良李晶吴祖良高尔豪朱佳丽戴连欣刘卫华张补河张峻维 School of Environmental Science and Engineering Changzhou UniversityChangzhou 213164People's Republic of China Key Laboratory of Advanced Plasma Catalysis Engineering for China Petrochemical Industry Changzhou 213164People's Republic of China Jiangxi Xintai Functional Materials Technology Co.Ltd. Ji'an 343100People's Republic of China

The plasma catalytic degradation of o-xylene in simulated air was improved by loading low amounts of Pt,Pd,or Au onto Co_(3)O_(4).At room temperature,o-xylene conversion and CO_(x)selectivity using a0.1 wt%Pt/Co_(3)O_(4)catalyst reached 98.9%and 80%,and the energy efficiency was at the top level in comparison with values in the literature.A stable o-xylene degradation performance could be obtained by online regenerating the heat-insulated reactor with a high energy *** characterization,it was found that the loading of nanosized Pt not only increased the Co^(3+)/Co^(2+)ratio,where the Co^(3+)benefitted the formation of reactive oxygen species,but also conduced Pt^(0)to oxygen activation,resulting in effective promotion of complete o-xylene *** plasma diffuse reflectance infrared Fourier transform spectroscopy demonstrated the complete o-xylene oxidation and proved that Pt played a key role in the complete oxidation of o-xylene.

关键词： nanosized Pt Co_(3)O_(4) 0-xylene degradation operando plasma DRIFTS Co^(3+)/Co^(2+)ratio

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GSH-activatable copper-elsinochrome off-on photosensitizer for combined specific NIR-II two-photon photodynamic/chemodynamic therapy

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Chinese Chemical Letters 2025年第3期36卷 322-327页

作者： Zekun Gao Xiuli Zheng Weimin Liu Jie Sha Shuaishuai Bian Haohui Ren Jiasheng Wu Wenjun Zhang Chun-Sing Lee Pengfei Wang Key Laboratory of Photochemical Conversion and Optoelectronic Materials and CityU-CAS Joint Laboratory of Functional Materials and Devices Technical Institute of Physics and ChemistryChinese Academy of SciencesBeijing 100190China School of Future Technology University of Chinese Academy of SciencesBeijing 100049China Center of Super-Diamond and Advanced Films(COSDAF)&Department of Materials Science and Engineering City University of Hong KongHong Kong SAR 999077China

The complexity of cancer therapy has led to the emergence of combination therapy as a promising approach to enhance treatment efficacy and *** integration of glutathione(GSH)-activatable two-photon photodynamic therapy(TP-PDT)and chemodynamic therapy(CDT)offers the possibility to advance precision and efficacy in anti-cancer *** this study,a GSH-activatable photosensitizer(PS),namely copper-elsinochrome(CuEC),is synthesized and utilized for combination second nearinfrared(NIR-II)TP-PDT/*** Cu^(2+)acts as a“lock”,suppressing the fluorescence and^(1)O_(2)generation ability of EC in a normal physiological environment(“OFF”state).However,the overexpressed GSH in the tumor microenvironment acts as the“key”,resulting in the release of EC(“ON”state)and Cu^(+)(reduced by GSH).The released EC can be utilized for fluorescence imaging and TP-PDT under NIR-II(λ=1000 nm)two-photon excitation,while Cu+can generate highly toxic hydroxyl radicals(•OH)via Fenton-like reaction for ***,this process consumes GSH and diminishes the tumor’s antioxidant capacity,thereby augmenting the efficacy of combination *** CuEC achieves significant tumor cell ablation in both 2D monolayer cells and 3D multicellular tumor spheres through the combination of NIR-II TP-PDT and CDT.

关键词： GSH activation Copper-elsinochrome photosensitizer Reactive oxygen species NIR-II two-photon photodynamic therapy Chemodynamic therapy

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Cement-inspired readily fabricated water-strengthened polymeric materials

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science China Chemistry 2024年第10期67卷 3458-3467页

作者： Han Zuo Luzhi Zhang Huixia Xuan Shijia Gu Xinxin Xu Rasoul Esmaeely Neisiany Qilin Wu Zhengwei You State Key Laboratory for Modification of Chemical Fibers and Polymer Materials Institute of Functional MaterialsCollege of Materials Science and EngineeringDonghua UniversityResearch Base of Textile Materials for Flexible Electronics and Biomedical Applications(China Textile Engineering Society)Shanghai Key Laboratory of Lightweight CompositeShanghai Engineering Research Center of Nano-Biomaterials and Regenerative MedicineShanghai 201620China Zhejiang Hexin Science and Technology Co. Ltd.Jiaxing 314033China Biotechnology Centre Silesian University of TechnologyKrzywoustego 844-100 GliwicePoland Department of Polymer Engineering Hakim Sabzevari UniversitySabzevar ***Iran

Polymeric materials have penetrated all aspects of society and play an irreplaceable ***,there is an inherent contradiction between their mechanical properties and processing ***,inspired by cement,a crucial construction material renowned for its excellent fabricating behavior and self-strengthening properties,we have developed dynamic crosslinked poly(oxime-urethane)(CPOU).The synthesized CPOU showed good self-healing ability and 3D printability owing to the dynamic dissociation and re-association of oxime-carbamate *** objects printed through the fused deposition modeling technique were able to be readily assembled into complex architectures through intrinsic ***,the self-strengthening of CPOU was successfully realized through multiple-step tandem *** dissociation of dynamic oxime-carbamate bonds produced–NCO groups,which reacted with the surrounding water to form polar urea bonds in the polymer network,leading to an increase in the tensile strength of CPOU from 11.95 to 19.37 *** work not only develops the polymers with combined self-healing,facile fabricating,and self-strengthening properties but also provides a new molecular strategy to modulate the properties of polymers,which could be potentially applied in diverse areas.

关键词： dynamic bonds 3D printing self-strengthening self-healing

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Polymerization-induced microphase separation of polymer-polyoxometalate nanocomposites for anhydrous solid state electrolytes

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Chinese Chemical Letters 2022年第9期33卷 4326-4330页

作者： Lu Liu Zicheng Wu Zhao Zheng Qianjie Zhou Kun Chen Panchao Yin South China Advanced Institute for Soft Matter Science and Technology School of Molecular Science and EngineeringSouth China University of TechnologyGuangzhou 510640China Guangdong Provincial Key Laboratory of Functional and Intelligent Hybrid Materials and Devices South China University of TechnologyGuangzhou 510640China

Solid-state electrolytes(SSEs)with high ionic conductivity,mechanical stability,and high thermal stability,as well as the stringent requirement of application in high-temperature fuel cells and lithium-ion batteries is receiving increasing *** nanocomposites(PNCs),combining the advantages of inorganic materials with those of polymeric materials,offer numerous opportunities for SSEs *** this work,we report a facile and general one-pot approach based on polymerization-induced microphase separation(PIMS)to generate PNCs with bi-continuous *** synthetic strategy transforms a homogeneous liquid precursor consisting of polyoxometalates(POMs,H_(3)PW_(12)O_(40),Li_(7)[V_(15)O_(36)(CO_(3))]),poly(ethylene glycol)(PEG)macro-chain-transfer agent,styrene and divinylbenzene monomers,into a robust and transparent *** resulting POMs are uniformly dispersed in the PEG block(PEG/POM)to form a conducting pathway that successfully realizes the effective transfer of protons and lithium ions,while the highly cross-linked polystyrene domains(P(S-co-DVB))as mechanical support provide outstanding mechanical properties and thermal *** the POM loading ratio up to 35 wt%,the proton conductivity of nanocomposite reaches as high as 5.99×10^(-4) S/cm at 100℃ in anhydrous environment,which effectively promotes proton transfer under extreme *** study broadens the application of fuel cells and lithium-ion batteries in extreme environments.

关键词： Solid-state electrolyte Microphase separation Bi-continuous structure Polymer Polyoxometalate

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Inverse-Designed Metastructures with Customizable Low Dynamic Stiffness Characteristics for Low-Frequency Vibration Isolation

SSRN

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SSRN 2024年

作者： Hu, Changzhi Li, Zonghan Tan, Ximing Chen, Mingji Beijing Key Laboratory of Lightweight Multi-functional Composite Materials and Structures Institute of Advanced Structure Technology Beijing Institute of Technology Beijing100081 China

The quasi-zero stiffness (QZS) vibration isolator is considered to be an effective way to address the contradiction between high load-bearing capacity and low-frequency vibration isolation. However, the design of traditional QZS isolators with multiple components, brings about complexity in structure integration, while designing a structure that is compact and lightweight is required for many engineering applications, especially for aerospace engineering. In this study, inverse design was employed to achieve QZS characteristics of the curved beam system. The trajectory of the cross-section center of a curved beam was optimized by using the genetic algorithm. The present design strategy has the advantage of achieving customizable stiffness and load-bearing capability, as well as constructing multiple QZS regions. The harmonic balance method was employed to analyze the dynamic response of the metatructure, and a parameter analysis was conducted to assess its isolation performance. Numerical simulations were also used to validate the theoretical model in the time and frequency domains, respectively. It is demonstrated by theoretical analysis and simulation that the proposed metastructure can effectively isolate vibrations above 2.18 Hz, about 62% lower than that of a linear isolator, with a mass of only 3.2% of the its load-bearing capacity. The presented design strategy provides a feasible solution for the compact and lightweight low-frequency vibration isolators, especially for miniature devices and precision instruments. © 2024, The Authors. All rights reserved.

关键词： Stiffness

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Long-range electron synergy over Pt_(1)-Co_(1)/CN bimetallic single-atom catalyst in enhancing charge separation for photocatalytic hydrogen production

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Journal of Energy Chemistry 2023年第6期81卷 502-509,I0011页

作者： Man Yang Jing Mei Yujing Ren Jie Cui Shuhua Liang Shaodong Sun Engineering Research Center of Conducting Materials and Composite Technology Ministry of EducationShaanxi Engineering Research Center of Metal-Based Heterogeneous Materials and Advanced Manufacturing TechnologyShaanxi Province Key Laboratory for Electrical Materials and Infiltration TechnologySchool of Materials Science and EngineeringXi’an University of TechnologyXi’an 710048ShaanxiChina Interdisciplinary Research Center of Biology&Catalysis School of Life SciencesNorthwestern Polytechnical UniversityXi’an 710072ShaanxiChina

The development of novel single-atom catalysts with optimal electron configuration and economical noble-metal cocatalyst for efficient photocatalytic hydrogen production is of great importance,but still ***,we fabricate Pt and Co single-atom sites successively on polymeric carbon nitride(CN).In this Pt_(1)-Co_(1)/CN bimetallic single-atom catalyst,the noble-metal active sites are maximized,and the single-atomic Co_(1)N_4sites are tuned to Co_(1)N_3sites by photogenerated electrons arising from the introduced single-atomic Pt_(1)N_*** studies and density functional theory(DFT)calculations reveal that the 3d orbitals of Co_(1)N_3single sites are filled with unpaired d-electrons,which lead to the improved visible-light response,carrier separation and charge migration for CN ***,the protons adsorption and activation are *** this advantage of long-range electron synergy in bimetallic single atomic sites,the photocatalytic hydrogen evolution activity over Pt_(1)-Co_(1)/CN achieves 915.8 mmol g^(-1)Pt h^(-1),which is 19.8 times higher than Co_(1)/CN and 3.5 times higher to Pt_(1)/*** this electron-synergistic effect is not so efficient for Pt *** results demonstrate the synergistic effect at electron-level and provide electron-level guidance for the design of efficient photocatalysts.

关键词： Bimetallic single-atom catalyst Long-range electron synergy Charge separation/transfer Carbon nitride Hydrogen production

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