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Recent advances in the electrochemistry of layered post-transition metal chalcogenide nanomaterials for hydrogen evolution reaction

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Journal of Energy Chemistry 2021年第9期30卷 451-479页

作者： yong Wang Yang zhao Xiang Ding liang Qiao School of Physics University of Electronic Science and Technology of ChinaChengdu 610054SichuanChina

Layered two-dimensional(2 D)materials have received tremendous attention due to their unique physical and chemical properties when downsized to single or few layers.Several types of layered materials,especially transition metal dichalcogenides(TMDs)have been demonstrated to be good electrode materials due to their interesting physical and chemical properties.Apart from TMDs,post-transition metal chalcogenides(PTMCs)recently have emerged as a family of important semiconducting materials for electrochemical studies.PTMCs are layered materials which are composed of post-transition metals raging from main group IIIA to group VA(Ga,In,Ge,Sn,Sb and Bi)and group VI chalcogen atoms(S,selenium(Se)and tellurium(Te)).Although a large number of literatures have reviewed the electrochemical and electrocatalytic applications of TMDs,less attention has been focused on PTMCs.In this review,we focus our attention on PTMCs with the aim to provide a summary to describe their fundamental electrochemical properties and electrocatalytic activity towards hydrogen evolution reaction(HER).The characteristic chemical compositions and crystal structures of PTMCs are firstly discussed,which are different from TMDs.Then,inherent electrochemistry of PTMCs is discussed to unveil the well-defined redox behaviors of PTMCs,which could potentially affect their efficiency when applied as electrode materials.Following,we focus our attention on electrocatalytic activity of PTMCs towards HER including novel synthetic strategies developed for the optimization of their HER activity.This review ends with the perspectives for the future research direction in the field of PTMC based electrocatalysts.

关键词： Post-transition metal chalcogenide Layered material Chemical composition Crystal structure Inherent electrochemistry Hydrogen evolution

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The Dual Regulatory Roles of Macrophages in Acute Allogeneic Organ Graft Rejection

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Engineering 2022年第3期8卷 21-29页

作者： liang Tan Yinan Guo Chang Feng Yangxiao Hou Xubiao Xie yong zhao Kidney Transplantation Department The Second Xiangya Hospital of Central South UniversityChangsha 410011China State Key Laboratory of Membrane Biology Institute of ZoologyChinese Academy of SciencesBeijing 100101China Cunji Medical School University of Chinese Academy of SciencesBeijing 100049China Institute for Stem Cell and Regeneration Chinese Academy of SciencesBeijing 100101China

Innate immune cells are critical for transplant response.As an important cellular component of innate immune cells,macrophages are the predominate infiltrated cells in allografts,and macrophage accumulation in allografts is negatively associated with the short-and long-term outcomes of organ transplantation.Macrophages are functionally heterogeneous and plastic.They participate in organ graft rejection through multiple pathways,including antigen presentation,the expression of costimulatory molecules and cytokines,and direct cytotoxicity and injury ability to allografts.However,some macrophage subpopulations,such as regulatory macrophages,can protect allografts from immune rejection and promote transplant immune tolerance with their immune regulatory properties.Although researchers recognize the potential roles macrophages play in allograft injury,they pay insufficient attention to the diverse roles of macrophages in allograft rejection.We herein briefly summarize the distinctive roles of macrophages in acute transplant immune response and the effect of immunosuppressive drugs on macrophages.Greater attention should be paid to the complex and critical function of macrophages in allograft rejection,and more effort should be put into developing immunosuppressive drugs that specifically target macrophages,which would ultimately improve the long-term survival of organ grafts in patients.

关键词： Macrophages Transplantation Tolerance Rejection Regulatory macrophage

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Organic Microlaser Arrays:From Materials Engineering to Optoelectronic Applications

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Accounts of Materials Research 2021年第5期2卷 340-351页

作者： Jie liang yongli Yan yong Sheng zhao Key Laboratory of Photochemistry Institute of ChemistryChinese Academy of SciencesBeijing 100190China University of Chinese Academy of Sciences Beijing 100049China

CONSPECTUS:In the past decade,micro/nanoscale lasers have captured broad research interest for their feasibility in advancing the fields of photonics and optoelectronics.Owing to ease of spectral and chemical tuning,convenient processing techniques,low threshold,and mechanical flexibilities,organic microlasers are promising candidates for novel devices that meet the developing trends of the field toward miniaturization,portability,and highly integration.To unleash the full potential for future integrated optoelectronics,organic microlaser arrays with specific functionalities and controllable alignment are on urgent demand.In recent years,ever-increasing efforts have been concentrated on the preparation and optoelectronic applications of organic microlaser arrays,which significantly expands the capabilities and improves the performance of organic microlasers.Therefore,it is of great importance to summarize this flourishing research area and give a deep understanding on the structure−function relationship and application-oriented fabrication strategies of organic microlaser arrays,which will be instructive for future development.In this Account,we systematically review recent progress in the field of organic microlaser arrays,with emphasis on the rational materials engineering as well as controlled patterning techniques toward integrated optoelectronic applications.Owing to excellent versatility and compatibility,organic materials are beneficial for the construction of microlasers with specific properties,such as tunable wavelength,switchable output among several wavelengths,and controllable lasing mode,which are of great significance to reliable applications in the field of information.A series of patterning techniques,including inkjet printing,template-assisted patterning,screen printing,and so on,have been applied to such functionalized organic microlasers to realize array configuration of multifunctionality and large-scale integration.The novel applications of the organic microlaser arrays are also presented,in

关键词： optoelectronic tuning printing

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Constructing a biomimetic robust bi-layered hydrophilic lubrication coating on surface of silicone elastomer

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Friction 2022年第7期10卷 1046-1060页

作者： Luyao GAO Xiaoduo zhao Shuanhong MA Zhengfeng MA Meirong CAI yong-Min liang Feng ZHOU School of Chemistry and Chemical Engineering Lanzhou UniversityLanzhou 730000China Lanzhou Institute of Chemical Physics Chinese Academy of SciencesLanzhou 730000China

Silicone elastomers-based materials have been extensively involved in the field of biomedical devices,while their use is extremely restricted due to the poor surface lubricity and inherent hydrophobicity.This paper describes a novel strategy for generating a robust layered soft matter lubrication coating on the surface of the polydimethylsiloxane(PDMS)silicone elastomer,by entangling thick polyzwitterionic polyelectrolyte brush of poly(sulfobetaine methacrylate)(PSBMA)into the sub-surface of the initiator-embedded stiff hydrogel coating layer of P(AAm-co-AA-co-HEMA-Br)/Fe,to achieve a unified low friction and high load-bearing properties.Meanwhile,the stiff hydrogel layer with controllable thickness is covalently anchored on the surface of PDMS by adding iron powder to provide catalytic sites through surface catalytically initiated radical polymerization(SCIRP)method and provides high load-bearing capacity,while the topmost brush/hydrogel composite layer is highly effective for aqueous lubrication.Their synergy effects are capable of attaining low friction coefficient(COFs)under wide range of loaded condition in water environment with steel ball as sliding pair.Furthermore,the influence of mechanical modulus of the stiff hydrogel layer on the lubrication performance of layered coating is investigated,for which the COF is the lowest only when the modulus of the stiff hydrogel layer well matches the PDMS substrate.Surprisingly,the COF of the modified PDMS could remain low friction(COF<0.05)stably after encountering 50,000 sliding cycles under 10 N load.Finally,the surface wear characterizations prove the robustness of the layered lubricating coating.This work provides a new route for engineering lubricious silicon elastomer with low friction,high load-bearing capacity,and considerable durability.

关键词： surface modification silicone elastomer layered lubrication coating hydrogels polyzwitterionic brush

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Comparison of semi-coke with traditional pulverized coal injection and iron ore sintering fuels based on chemical structure and combustion behavior

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Journal of Iron and Steel Research(International) 2022年第5期29卷 725-740页

作者： Jiang-yong He Chong Zou Jun-xue zhao Dong liang Jia-le Xi Cheng Ma School of Metallurgical Engineering Xi’an University of Architecture and TechnologyXi’an710311ShaanxiChina Technical Center of Shandong Iron and Steel Co. Ltd.(Laiwu Branch)Jinan271104ShandongChina

Substantial semi-coke has been produced through the industrialized low-temperature pyrolysis process,which has great potential as an alternative fuel for pulverized coal injection(PCI)and iron ore sintering.X-ray diffraction,Raman spectroscope,and thermal analysis were used to compare the carbon chemical structure and combustion reactivity of semi-coke,pulverized coal,and coke breeze.The results show that the average volatile matter content in 46 types of semi-cokes is 8.94 wt.%.The fluctuation range of the characteristic parameters of the semi-coke chemical structure is d_(002)=(0.352–0.379)nm and A_(D1)/A_(G)=(2.51–7.92),while the fluctuation range of the characteristic parameters of pulverized coal is d_(002)=(0.348–0.373)nm and A_(D1)/A_(G)=(1.71–9.03)(where d_(002)means the interlayer spacing between the aromatic planes,and A_(D1)/A_(G)is an index that characterizes the degree of disorder of the char structure through the area ratio of the defect peak band D1 to the perfect graphite peak band G);the overlap between these ranges is relatively high.Contrarily,the fluctuation range of the characteristic parameters of coke breeze is d_(002)=(0.343–0.350)nm and A_(D1)/A_(G)=(0.75–2.51),which is markedly different from that of semi-coke.Semi-coke combustion reactivity is close to that of pulverized coal,but considerably better than that of coke breeze.In terms of chemical structure and combustion reactivity,semi-coke can be used as an alternative fuel for PCI;however,when used for sintering alternative fuel,matching of the heat supply and demand in the later sintering stage must be scrupulously analyzed.

关键词： Semi-coke Coke Blast furnace Pulverized coal injection Combustion

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Comprehensive analysis of RNA-seq and whole genome sequencing data reveals no evidence for SARS-CoV-2 integrating into host genome

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Protein & Cell 2022年第5期13卷 379-385页

作者： Yu-Sheng Chen Shuaiyao Lu Bing Zhang Tingfu Du Wen-Jie Li Meng Lei Yanan Zhou yong Zhang Penghui Liu yong-Qiao Sun Yong-Liang Zhao Ying Yang Xiaozhong Peng Yun-Gui Yang CAS Key Laboratory of Genomic and Precision Medicine Collaborative Innovation Center of Genetics and DevelopmentCollege of Future TechnologyBeijing Institute of GenomicsChinese Academy of SciencesBeijing 100101China China National Center for Bioinformation Beijing 100101China National Kunming High-level Biosafety Primate Research Center Institute of Medical BiologyChinese Academy of Medical Sciences and Peking Union Medical CollegeKunming 650031China Institute of Stem Cell and Regeneration Chinese Academy of SciencesBeijing 100101China University of Chinese Academy of Sciences Beijing 100049China State Key Laboratory of Medical Molecular Biology Department of Molecular Biology and BiochemistryInstitute of Basic Medical SciencesMedical Primate Research CenterNeuroscience CenterChinese Academy of Medical SciencesSchool of Basic Medicine PekingUnion Medical CollegeBeijing 100005China

Dear Editor,Severe acute respiratory syndrome coronavirus 2(SARS-CoV-2)is an RNA virus of the Coronaviridae family causing the outbreak and worldwide pandemic of coronavims disease 2019(COVID-19)(Zhou et al.,2020b;Zhu et al.,2020b).As an emergent and unprecedented global threat to public health,it has affected about 162 million individuals with over 3.3 million deaths until the middle of May.In attributed to the extensive studies on SARS-CoV-2,several kinds of vaccines are currently available which brings hope to human society for alleviating and eventually preventing COVID-19 epidemic(Zhu et al.,2020a;Xia et al.,2021).However,a better understanding of viral pathogenesis,particularly the viral-host interaction,are needed to develop effective interventions.

关键词： integrating eventually attributed

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Heterojunction synergistic catalysis of MXene-supported PrF_(3)nanosheets for the efficient hydrogen storage of AlH_(3)

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Nano Research 2023年第7期16卷 9546-9552页

作者： Long liang Shaolei zhao Chunli Wang Dongming Yin Shaohua Wang Qingshuang Wang Fei liang Shouliang Li Limin Wang yong Cheng State Key Laboratory of Rare Earth Resource Utilization Changchun Institute of Applied ChemistryChinese Academy of SciencesChangchun 130022China School of Applied Chemistry and Engineering University of Science and Technology of ChinaHefei 230026China National Engineering Research Center of Nonferrous Metals Materials and Products for New Energy GRINM Group Co.Ltd.Beijing 100088China GRIMAT Engineering Institute Co. Ltd.Beijing 101407China College of Life Science and Technology Changchun University of Science and TechnologyChangchun 130022China Henan Nayu New Material Co. Ltd.Xinxiang 453000China

Aluminum hydride is a promising chemical hydrogen storage material that can achieve dehydrogenation under mild conditions as well as high hydrogen storage capacity.However,designing an efficient and cost-effective catalyst,especially a synergistic catalyst,for realizing low-temperature and high-efficiency hydrogen supply remains challenging.In this study,the heterojunction synergistic catalyst of Ti_(3)C_(2)supported PrF_(3)nanosheets considerably improved the dehydrogenation kinetics of AlH_(3)at low temperatures and maintained a high hydrogen storage capacity.In the synergistic catalyst,Pr produced a synergistic coupling interaction through its unique electronic structure.The sandwich structure with close contact between the two phases enhanced the interaction between species and the synergistic effect.The initial dehydrogenation temperature of the composite is reduced to 70.2℃,and the dehydrogenation capacity is 8.6 wt.%at 120℃ in 90 min under the kinetic test,which reached 93%of the theoretical hydrogen storage capacity.The catalyst considerably reduced the activation energy of the dehydrogenation reaction.Furthermore,the multielectron pairs on the surface of the catalyst promoted electron transfer and accelerated the reaction.

关键词： hydrogen storage aluminium hydride catalysis synergistic effect dehydrogenation

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Experimental investigation of self-oscillation feedback flow field structure and flow induced aeroacoustics for an open cavity in low speed wind tunnel

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Chinese Journal of Acoustics 2022年第4期41卷 358-372页

作者： liang yong CHEN Yingchun zhao Kun WANG yong YUE Tingrui CHEN Zhengwu Low Speed Institute China Aerodynamics Research and Development CenterMianyang 621000 School of Aeronautics Northwestern Polytechnical UniversityXi'an 710072 Commercial Aircraft Corporation of China Ltd.Shanghai 201200

To investigate the noise issue caused by open-cavity self-sustained oscillations,flow over a rectangular cavity with a length-to-depth ratio of 2 at Mach numbers of 0.10,0.15,0.20,and 0.25 was experimentally studied in a 0.55 m×0.40 m aeroacoustics wind tunnel.Further,the velocity field and self-sustained oscillation were studied.High-frequency particle image velocimetry was employed to visualise the flow-field structure and analyse the path of the acoustic and pressure waves.The acoustic self-sustaining oscillation modes and duct modes were investigated by testing the far field and the fluctuating wall pressure.Moreover,the characteristics of the correlation between the wall pressure and the acoustic performance were discussed.The results demonstrated that apart from the main vortex structure,shear vortices at the leading edge and crash vortices at the trailing edge were observed.Furthermore,around the frequencies of 875 Hz,1288 Hz,1875 Hz,and 2050 Hz,an evident tonal noise,induced by the cavity oscillation,could be detected.In addition,the wall pressure strongly correlated with the far-field noise,and the tone appeared at the same frequencies where the peaks occurred in the wall pressure spectra.

关键词： oscillation flow field

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HBV sL13H mutation impairs its surface antigen expression and ability to induce autophagy

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Genes & Diseases 2022年第6期9卷 1401-1404页

作者： Jianbo Xia liang Cao Zhenyu zhao Yingying Deng Mengji Lu Chunchen Wu yong Lin Department of Laboratory Medicine Maternal and Child Health Hospital of Hubei ProvinceTongji Medical CollegeHuazhong University of Science and TechnologyWuhanHubei 430070PR China Department of Microbiology and Immunology Feinberg School of MedicineNorthwestern UniversityChicagoIL 60208USA Key Laboratory of Molecular Biology of Infectious Diseases(Chinese Ministry of Education) Chongqing Medical UniversityChongqing 400016PR China Institute of Virology University Hospital EssenUniversity of Duisburg-Essen47048 DuisburgGermany

Autophagy,a conserved“self-eating”process for cellular homeostasis,plays a crucial role in the hepatitis B virus(HBV)life cycle,including viral assembly,envelopment,release,and degradation.1 Autophagy can also be hijacked by HBV for its persistence and survival.However,the association between HBV mutations and autophagy remains unclear.Herein,we found that an HBV surface antigen(HBsAg)mutation involving sL13H substitution impaired HBsAg expression and caused its abnormal distribution in vitro and in a hydrodynamic injection(HI)-based mouse model for acute HBV infection.The sL13H mutation also decreased autophagosome formation and inhibited autophagic flux.Further mechanistic analysis revealed that sL13H suppresses HBV-induced autophagy initiation by inhibiting the eukaryotic translation initiation factor 2 alpha kinase 3(EIF2AK3/PERK)eeukaryotic translation initiation factor 2 subunit alpha(EIF2S1/eIF2a)eautophagy related(ATG)5/12 axis.Therefore,our findings reveal a potential role for HBV mutations in manipulating host autophagic flux for virus persistence and pathogenesis in chronic hepatitis B.

关键词： impaired inhibited homeostasis

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Redox-responsive polymer prodrug/AgNPs hybrid nanoparticles for drug delivery

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Chinese Chemical Letters 2018年第2期29卷 301-304页

作者： liang Qiu Linfei zhao Chengfen Xing yong Zhan Institute of Biophysics Hebei University of Technology

A drug carrier system of the hybrid nanoparticles based on the redox-responsive P[（2-（（2-（（camptothecin）-oxy）ethyl）disulfanyl）ethylmethacrylate）-co-（2-（D-galactose）methylmethacryl-ate）]（P（MACPTS-co-MAGP）） and AgNPs is developed to deliver the anti-cancer drug camptothecin（CPT） and monitor the drug release by the recovery of the fluorescence of CPT. CPT is linked to the polymer sidechains via a redox-responsive disulfide bond, attaching on the surface of AgNPs and leading to the quenching of CPT fluorescence（＂off＂ state） due to the nanoparticle surface energy transfer（NSET） effect.Upon the exposure to glutathione（GSH）, the disulfide bond is cleaved to release CPT, resulting in the recovery of the fluorescence of CPT（＂on＂ state）. The system offers a platform to track the CPT delivery and releasing in real time

关键词： Redox-responsive Drug delivery system Hybrid nanoparticles NSET effect

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