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Chinese Chemical Letters 2021年第4期32卷 1348-1358页

作者： Jiayue Hu Chunyang Zhai Mingshan Zhua guangdong Key Laboratory of Environmental Pollution and Health School of EnvironmentJinan UniversityGuangzhou 511443China School of Materials Science and Chemical Engineering.Ningbo University Ningbo 315211China

Direct alcohol fuel cells(DAFCs)have received wide attention as a new type of clean energy device because of their high energy conversion efficiency,portability,non-toxicity and *** catalysts are the key factors affecting the performance of *** studies show that using the optical activity of semiconductor materials as the carriers of traditional precious metal electrocatalysts,under the illumination of light sources,can greatly improve the electrocatalytic activity and stability of *** this review,the research progress of photo-responsive metal/semiconductor hybrids as the electrocatalysts for DAFCs in recent years is summarized,including:(1)Mechanism and advantages of photo-assistant electrochemical alcohol oxidation reaction,(2)me tal/semiconductor electrocatalyst for the different type of fuel cell reactions,(3)different kind of metals in photo-responsive metal/semiconductor hybrid nanostructure,(4)the personal prospects of the photo-responsive metal/semiconductor electrode for future application in DAFCs.

关键词： Direct alcohol fuel cells Semiconductor materials Noble metal Photo-responsive electrocatalysis Hybrid material

Stochastic Accelerated Alternating Direction Method of Multipliers for Hedging Communication Noise in Combined Heat and Power Dispatch

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CSEE Journal of Power and Energy Systems 2023年第2期9卷 696-706页

作者： Zhigang Li Xinyu Liang Fan Hu Wen Xiong Renbo Wu J.H.Zheng Q.H.Wu School of Electric Power Engineering South China University of TechnologyGuangzhou 510641China Guangzhou Power Supply Bureau Guangdong Power Grid Co.LtdGuangzhouChina

Combined heat and power dispatch(CHPD)opens a new window for increasing operational flexibility and reducing wind power *** power and district heating systems are independently controlled by different system operators;therefore,a decentralized solution paradigm is necessary for CHPD,in which only minor boundary information is required to be exchanged via a communication ***,a nonideal communication environment with noise could lead to divergence or incorrect solutions of decentralized *** bridge this gap,this paper proposes a stochastic accelerated alternating direction method of multipliers(SA-ADMM)for hedging communication noise in *** algorithm provides a general framework to address more types of constraint sets and separable objective functions than the existing stochastic *** from the single noise sources considered in the existing stochastic approximation methods,communication noise from multiple sources is addressed in both the local calculation and the variable update *** studies of two test systems validate the effectiveness and robustness of the proposed SAADMM.

关键词： Alternating direction method of multipliers combined heat and power dispatch communication noise decentralized optimization

Multiple anti-counterfeiting strategy by integrating up-conversion,down-shifting luminescence, phosphorescence and photochromism into Na YTiO4: Bi/Er phosphors

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Journal of Materials Science & Technology 2022年第35期130卷 219-226页

作者： Yuzhen Wang Xuanyi Yuan Yongge Cao Chaoyang Ma Songshan Lake Materials Laboratory Dongguan 523808China Department of Physics Renmin University of ChinaBeijing 100872China Beijing National Laboratory for Condensed Matter Physics and Institute of Physics Chinese Academy of SciencesBeijing 100190China

With the rapid development of science and technology,the high-security-level anti-counterfeiting technique is essential for ensuring property or information *** this work,we prepared micron NaYTiO_(4):Bi/Er(NYT:Bi/Er) phosphors with integrating up-conversion(UC) photoluminescence,downshifting(DS) emission,phosphorescence and photochromism(PC) performances for advanced multiple anti-counterfeiting *** to the abundant energy levels of Er^(3+)ions,the UC and DS luminescence behaviors are ***,the yellow-green emission of Er^(3+)ions can be observed upon 980 nm excitation,and the bright green emission is demonstrated under 281 or 254 nm excitation due to the energy transitions of Er^(3+)ions and the energy transfer process from Bi^(3+)to Er^(3+)***,the introduction of Bi^(3+)ions generates defect levels in the matrix and thus leads to ***,the repeatable PC performance could be triggered by the 365 nm irradiation and vanished with 450 nm illumination or thermal *** verify the practical usability of NYT:Bi/Er phosphors on anti-counterfeiting applications,some experiments are designed and successfully *** is believed that the NYT:Bi/Er phosphors can be a promising candidate for high-security-level multiple anti-counterfeiting.

关键词： Anti-counterfeiting Up-conversion Down shifting Phosphorescence Photochromism NaYTiO4 Bi/Er

Effects of long-term exposure to TDCPP in zebrafish( Danio rerio )–Alternations of hormone balance and gene transcriptions along hypothalamus-pituitary axes

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Animal Models and Experimental Medicine 2022年第3期5卷 239-247页

作者： Xiaoshan Liu Xiaoxun Lu Jiabin Hong Jing Zhang Juntong Lin Mengzhu Jiang Qian Liu Kyungho Choi Jingjing Zhang School of Public Health Dongguan Key Laboratory of Environmental MedicineGuangdong Medical UniversityGuangdongChina Graduate School of Public Health and Institute of Health and Environment Seoul National UniversitySeoulKorea Affiliated Hospital of guangdong Medical University&Key Laboratory of Zebrafish Model for Development and Disease Guangdong Medical UniversityZhanjiangChina The Marine Biomedical Research Institute of guangdong Zhanjiang ZhanjiangGuangdongChina

Background : TDCPP is one of the major chemical of organophosphate flame retardants(OPFRs) that has been detected ubiquitously in both the environment and biota. Previously we observed that it influenced the concentrations of sex and thyroid hormones in a sex-dependent pattern, leading to reproductive impairments after short-term exposure in zebrafish. Here we investigate the consequences of longerterm exposure to TDCPP on the hypothalamic-pituitary-gonad(HPG), hypothalamicpituitary-i nterrenal(HPI), and hypothalamic-pituitary-thyroid(HPT) axes of zebrafish( Danio rerio).Methods : A 120-day exposure test to 0.005, 0.05 and 0.5 mg/L TDCPP was initiated with fertilized eggs. Sex steroid hormones in the treated fishes were measured and transcriptional changes were *** : In female fish, exposure to TDCPP resulted in increases in plasma cortisol,follicle stimulating hormone(FSH), luteinizing hormone(LH), 17β-estradiol(E2), cortisol, thyroxine(T4), and triiodothyronine(T3). Transcription of most target genes along HPG, HPI and HPT axes were increased by the exposure. While in male fish the exposure led to decreases in cortisol, FSH, LH, T4, T3, testosterone(T), and 11-ketotestosterone(11-KT). Transcription of genes along HPG, HPI and HPT axes,especially steroidogenic genes, were inhibited in male zebrafish. While, E2/T or E2/11-KT ratio was increased in both female and females. The sex-dependent changes in hormones might be due to differential responses to TDCPP induced stresses. An increase in cortisol level coincided with increases in E2 and THs in female fish, while in males decreases in cortisol as well as T, 11-KT and THs were observed. Long-term exposure to TDCPP at very low(μg/L) concentrations could disrupt hormone balances in a sex dependent *** : This study revealed that TDCPP could affect endocrine axes – HPG, HPI and HPT – in zebrafish, and impair zebrafish development.

关键词： hypothalamus-pituitary-gonad hypothalamus-pituitary-i nterrenal hypothalamus-pituitarythyroid organophosphate flame retardants Zebrafish

Designing artificial ion channels with strict K+/Na+ selectivity toward next-generation electric-eel-mimetic ionic power generation

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National Science Review 2023年第12期10卷 193-202页

作者： Jipeng Li Linhan Du Xian Kong Jianzhong Wu Diannan Lu Lei Jiang Wei Guo State Key Laboratory of Marine Resource Utilization in South China Sea School of Materials Science and Engineering Hainan University Department of Chemical Engineering Tsinghua University South China Advanced Institute for Soft Matter Science and Technology Guangdong Provincial Key Laboratory of Functional and Intelligent Hybrid Materials and Devices School of Emergent Soft MatterSouth China University of Technology Department of Chemical and Environmental Engineering University of California Research Institute for Frontier Science Beihang University Center for Quantum Physics and Intelligent Sciences Department of Physics Capital Normal University

A biological potassium channel is> 1000 times more permeable to K+than to Na+and exhibits a giant permeation rate of ～108ions/*** is a great challenge to construct artificial potassium channels with such high sele ctivity and ion conduction ***,we unveil a long-overlo oked structural feature that underpins the ultra-high K+/Na+*** carrying out massive molecular dynamics simulation for ion transport through carbonyl-oxygen-modified bi-layer graphene nanopores,we find that the twisted carbonyl rings enable strict potassium selectivity with a dynamic K+/Na+selectivity ratio of 1295 and a K+conduction rate of 3.5 × 107ions/s,approaching those of the biological ***,atomic trajectories of K+permeation events suggest a dual-ion transport mode,*** like-charged potassium ions are successively captured by the nanopores in the graphene bi-layer and are interconnected by sharing one or two interlayer water *** dual-ion behavior allows rapid release of the exiting potassium ion via a soft knock-on mechanism,which has previously been found only in biological ion *** a proof-of-concept utilization of this discovery,we propose a novel way for ionic power generation by mixing KCl and NaCl solutions through the bi-layer graphene nanopores,termed potassium-permselectivity enabled osmotic power generation(PoPee-OP G).Theoretically,the biomimetic device achieves a very high power density of> 1000 W/m2with graphene sheets of <1% *** study provides a blueprint for artificial potassium channels and thus paves the way toward next-generation electric-eel-mimetic ionic power generation.

关键词： artificial ion channel bi-layer graphene dehydrated ion transport bio-inspired materials energy conversion

High performance lithium oxygen batteries based on a phosphorous-doped holey graphene cathode

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Rare Metals 2022年第12期41卷 4027-4033页

作者： Ying Meng Jia-Kui Zhang Hai-Ying Lu Xiang-Hong Chen Jian-Tie Xu National Engineering Laboratory for VOCs Pollution Control Technology and Equipment Guangdong Provincial Key Laboratory of Atmospheric Environment and Pollution ControlSchool of Environment and EnergySouth China University of TechnologyGuangzhou 510640China

The sluggish electrochemical kinetics of cathode is one of the critical issues for the development of high performance lithium oxygen batteries(LOBs).Graphene-based materials have attracted great attentions as advance... 详细信息

关键词： lithium performance kinetics

A novel approach for synthesis of expanded graphite and its enhanced lithium storage properties

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Journal of Energy Chemistry 2021年第8期30卷 292-298,I0007页

作者： Xianghong Chen Feng Xiao Yu Lei Haiyin Lu Jiakui Zhang Min Yan Jiantie Xu guangdong Provincial Key Laboratory of Atmospheric Environment and Pollution Control National Engineering Laboratory for VOCs Pollution Control Technology and EquipmentSchool of Environment and EnergySouth China University of TechnologyGuangzhou 510640China

Relying on the great success in portable and smart devices,lithium ion batteries(LIBs)have been considered as one of the leading technologies in electric vehicles(EVs)and stationary energy storage systems(ESSs).With the rapid development of EVs and ESSs,the technology upgrading of LIBs is highly *** expected,it requires LIBs with improved power and energy densities[1].

关键词： Expanded graphite Holey Anodes Lithium ion batteries Rate capability

Systemic delivery of gemcitabine analogue and STAT3 siRNA promotes antitumor immunity against melanoma

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Nano Research 2022年第10期15卷 9057-9072页

作者： Huan Yan Zhanyan Liu Guibin Lin Fei Gu Yan Liu Yuxiao Xu Xueli Kuang Yuan Zhang School of Biomedical Sciences and Engineering South China University of TechnologyGuangzhou International CampusGuangzhou 511442China National Engineering Research Center for Tissue Restoration and Reconstruction South China University of TechnologyGuangzhou 510006China guangdong Provincial Key Laboratory of Biomedical Engineering South China University of TechnologyGuangzhou 510006China Key Laboratory of Biomedical Materials and Engineering of the Ministry of Education South China University of TechnologyGuangzhou 510006China

Immunosuppressive myeloid cells in the tumor microenvironment(TME)inhibit T-cell-mediated immune response and promote tumor *** targeting both tumor cells and myeloid cells such as myeloid-derived suppressor cells(MDSCs),is expected to promote antitumor ***(Gem)can serve as a chemotherapeutic drug and a MDSCdepleting *** activation of STAT3 promotes tumor cell growth and orchestrates the immunosuppressive activity of tumor-associated myeloid *** we describe a strategy to kill tumor cells as well as inhibit the expansion and suppressive function of myeloid cells through the systemic delivery of gemcitabine monophosphate(GMP)and STAT3 siRNA(siSTAT3).To enhance their in vivo delivery efficiency,we formulate GMP and siSTAT3 into a lipid-coated calcium phosphate(LCP)nanoparticle and a liposome-protamine-hyaluronic acid(LPH)nanoparticle,*** to the control and monotherapy groups,combined GMP and siSTAT3 nanoparticles effectively induced tumor cell death,downregulated a wide range of pro-tumor signaling pathways and immunosuppressive mediators,eliminated MDSCs,enhanced T cell effector functions in tumors and lymphoid compartments,and led to superior therapeutic efficacy in a syngeneic mouse melanoma ***,these nanoparticles can serve as adjuvant treatment to improve the therapeutic response of anti-PD-1-based immune checkpoint blockade ***,the combination of gemcitabine chemotherapy and STAT3 inhibition through nanotechnology could effectively kill tumor cells,alleviate the immunosuppressive TME,and enhance endogenous antitumor immunity.

关键词： immunosuppression tumor microenvironment nanoparticle gemcitabine STAT3 siRNA

Fluorinated Colorless Polyimides with High Heat-resistance and Low Birefringence

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Chinese Journal of Polymer Science 2023年第10期41卷 1599-1608页

作者： Bing-Yu Zou Lu-Hao Qiu Huan-Yu Lei Jin-Ming Liu Wei-Feng Peng Hong-Qin Zhao Feng Bao Ming-Jun Huang South China Advanced Institute for Soft Matter Science and Technology School of Emergent Soft MatterSouth China University of TechnologyGuangzhou510640China guangdong Provincial Key Laboratory of Functional and Intelligent Hybrid Materials and Devices South China University of TechnologyGuangzhou510640China

The development of optical films with high transparency,high thermal resistance and low birefringence remains a challenge in the flexible display *** this work,we designed and synthesized a series of fluorinated colorless polyimides(CPIs)materials using 2,5-substituted m-phenylenediamine diamine monomers and 1,2,4,5-cyclohexanetetracarboxylic dianhydride(CHDA).We systematically studied the effects of fluorinated group substitutions on the thermal,mechanical,optical and dielectric properties of CPI *** introduction of alicyclic CHDA dianhydride affords high transparency and low yellowness,while the 2,5-substituted m-phenylenediamine diamines offer the CPIs with quite low birefringence as well as high glass transition temperatures.A particular CHDA/o3FBDA film with simple chemical structure stands out,exhibiting well-balanced overall properties.

关键词： Colorless polyimide Low birefringence Fluorinated Optical flm

Relaxed Alternating Direction Method of Multipliers for Hedging Communication Packet Loss in Integrated Electrical and Heating System

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Journal of Modern Power Systems and Clean Energy 2020年第5期8卷 874-883页

作者： Xinyu Liang Zhigang Li Wenjing Huang Q.H.Wu Haibo Zhang School of Electric Power Engineering South China University of TechnologyGuangzhou 510641China IEEE State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources North China Electric Power UniversityBeijing 102206China

Integrated electrical and heating systems(IEHSs)are promising for increasing the flexibility of power systems by exploiting the heat energy storage of *** the recent development of advanced communication technology,distributed optimization is employed in the coordination of IEHSs to meet the practical requirement of information privacy between different system *** studies on distributed optimization algorithms for IEHSs have seldom addressed packet loss during the process of information *** this paper,a distributed paradigm is proposed for coordinating the operation of an IEHS considering communication packet *** relaxed alternating direction method of multipliers(R-ADMM)is derived by applying Peaceman-Rachford splitting to the Lagrangian dual of the primal *** proposed method is tested using several test systems in a lossy communication and transmission *** results indicate the effectiveness and robustness of the proposed R-ADMM algorithm.

关键词： Alternating direction method of multipliers(ADMM) communication failure distributed optimization integrated energy systems packet loss