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Surface/interface engineering of high-efficiency noble metal-free electrocatalysts for energy-related electrochemical reactions

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Journal of Energy Chemistry 2021年第3期30卷 89-104页

作者： hui Zhao zhong-Yong Yuan School of Materials Science and Engineering Liaocheng UniversityLiaocheng 252000ShandongChina Key Laboratory of Advanced Energy Materials Chemistry(Ministry of Education) School of Materials Science and EngineeringNankai UniversityTianjin 3000350China

To date,much efforts have been devoted to the high-efficiency noble metal-free electrocatalysts for hydrogen-and oxygen-involving energy conversion reactions,due to their abundance,low cost and ***/interface engineering is found to be effective in achieving novel physicochemical properties and synergistic effects in nanomaterials for *** various engineering strategies,heteroatom-doping has been regarded as a most promising method to improve the electrocatalytic performance via the regulation of electronic structure of catalysts,and numerous works were reported on the synthesis method and mechanism investigation of heteroatom-doping electrocatalysts,though the heteroatom-doping can only provide limited active *** of other defects such as vacancies and edge sites and construction of heterostructure have shown to open up a potential avenue for the development of noble metal-free *** addition,surface functionalization can attach various molecules onto the surface of materials to easily modify their physical or chemical properties,being as a promising complement or substitute for offering materials with catalytic *** paper gives the insights into the diverse strategies of surface/interface engineering of the highefficiency noble metal-free electrocatalysts for energy-related electrochemical *** significant advances are *** unique advantages and mechanisms for specific applications are *** current challenges and outlook of this growing field are also discussed.

关键词： Noble metal-free electrocatalysts Electrocatalysis Surface/interface engineering Metal-air battery Overall water splitting

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Dynamic Regulation of Hydrogen Bonding Networks and Solvation Structures for Synergistic Solar‑Thermal Desalination of Seawater and Catalytic Degradation of Organic Pollutants

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Nano-Micro Letters 2025年第2期17卷 548-565页

作者： Ming‑Yuan Yu Jing Wu Guang Yin Fan‑Zhen Jiao zhong‑Zhen Yu Jin Qu Beijing Key Laboratory of Advanced Functional Polymer Composites Beijing University of Chemical TechnologyBeijing 100029People’s Republic of China State Key Laboratory of Organic‑Inorganic Composites College of Materials Science and EngineeringBeijing University of Chemical TechnologyBeijing 100029People’s Republic of China

Although solar steam generation strategy is efficient in desalinating seawater,it is still challenging to achieve continuous solar-thermal desalination of seawater and catalytic degradation of organic ***,dynamic regulations of hydrogen bonding networks and solvation structures are realized by designing an asymmetric bilayer membrane consisting of a bacterial cellulose/carbon nanotube/Co_(2)(OH)_(2)CO_(3)nanorod top layer and a bacterial cellulose/Co_(2)(OH)_(2)CO_(3)nanorod(BCH)bottom ***,the hydrogen bonding networks inside the membrane can be tuned by the rich surface–OH groups of the bacterial cellulose and Co_(2)(OH)_(2)CO_(3)as well as the ions and radicals in situ generated during the catalysis ***,both SO_(4)^(2−)and HSO_(5)−can regulate the solvation structure of Na^(+)and be adsorbed more preferentially on the evaporation surface than Cl^(−),thus hindering the de-solvation of the solvated Na^(+)and subsequent nucleation/growth of ***,the heat generated by the solar-thermal energy conversion can accelerate the reaction kinetics and enhance the catalytic degradation *** work provides a flow-bed water purification system with an asymmetric solar-thermal and catalytic membrane for synergistic solar thermal desalination of seawater/brine and catalytic degradation of organic pollutants.

关键词： Solar steam generation Seawater desalination Catalytic degradation Bacterial cellulose Cobalt hydroxycarbonate nanorods

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Three new phenanthrenes from Monomeria barbata Lindl.

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Chinese Chemical Letters 2010年第3期21卷 325-328页

作者： yang, Ming hui Cai, Le Li, Mei Hong Zeng, Xiang hui yang, ya Bin Ding, zhong Tao Yunnan Univ Sch Chem Sci & Technol Minist Educ Key Lab Med Chem Nat Resource Kunming 650091 Peoples R China Dali Coll Dept Biochem Dali 671000 Peoples R China

Three new monophenanthrene compounds were isolated from an acetone extract of the tubers of Monomeria barbata Lindl. (Orchidaceae).Using spectroscopic methods,the structures of compounds 1-3 were determined as 1,4,7-trihydroxy-2-methoxy- 9,10-dihydrophenanthrene(1),1-(p-hydroxybenzoyl)-2-methoxy-4,7-dihydroxy-9,10-dihydrophenanthrene(2),1,3,8-tri(p-hydroxybenzyl) -4-methoxy-phenanthrene-4,7-diol(3).These compounds showed cytotoxicities on four tumor cell lines(HepG2, HL-60,Skov-3,A431).

关键词： Monomeria barbata Orchidaceae Monophenanthrene Cytotoxicity

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QCM Sensors Based on PEI Films for CO_2 Detection

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Journal of Electronic Science and Technology 2015年第2期13卷 181-187页

作者： Guang-zhong Xie Ting Kang Yong Zhou Tao Xie hui-Ling Tai ya-Dong Jiang School of Optoelectronic Information University of Electronic Science and Technology of China

In this paper, quartz crystal microbalance（QCM） gas sensors coated with polyehtyleneimine（PEI）was utilized for carbon dioxide（CO2） detection. The sensing mechanism is based on the availability of reversible acid-base reactions between CO2 molecules and PEI at room temperature. The experimental results revealed that the PEI/starch sensor exhibited much higher sensitivity than that of pure PEI, and showed approximate linearity over a concentration region ranging from 500 ppm to 8000 ppm. The influence of humidity had also been investigated. Furthermore, the response and recovery time deceased as the operation temperatures increased. Finally, sensitivity loss after conservation for several days and reversibility of the sensors had been discussed.

关键词： starch reversible utilized availability coated approximate quartz linearity humidity conservation

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Self-assembly of supramolecular polymers in water from tetracationic and tetraanionic monomers in water through cooperative electrostatic attraction and aromatic stacking

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Chinese Chemical Letters 2019年第1期30卷 127-130页

作者： ya-Kun Zhao zhong-Zheng Gao hui Wang Dan-Wei Zhang Zhan-Ting Li Department of Chemistry Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials and Collaborative Innovation Center of Chemistry for Energy Materials (iChEM) Fudan University

The cooperative electrostatic attraction and π-π aromatic stacking interactions between tetrahedral tetrapyridinium TP and three tetraanionic tetraphenylethylene derivatives TPE-1～3 led to the formation of a new kind of supramolecular polymer networks in water, which have been confirmed by^1 H NMR,fluorescence, isothermal titration calorimetric(ITC) and dynamic light scattering(DLS) experiments. ITC studies show that the contributions of enthalpy and entropy were comparable, reflecting the importance of hydrophobicity in driving the intermolecular aromatic stacking. DLS experiments indicate that the linear supramolecular polymers formed by these tetratopic monomers further aggregated into networks of 10~2-nm size.

关键词： Supramolecular polymers Electrostatic attraction Aromatic stacking Self-assembly Aqueous phase

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Application of exosome-derived noncoding RNAs in bone regeneration:Opportunities and challenges

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World Journal of Stem Cells 2022年第7期14卷 473-489页

作者： Yuan-zhong Ren Shan-Shan Ding ya-Ping Jiang hui Wen Tao Li Department of Emergency Trauma Surgery Luoyang Central Hospital Affiliated to Zhengzhou UniversityLuoyang 471000Henan ProvinceChina Department of Geriatrics Luoyang Central Hospital Affiliated to Zhengzhou UniversityLuoyang 471000Henan ProvinceChina Department of Oral Implantology The Affiliated Hospital of Qingdao UniversityQingdao 266000Shandong ProvinceChina Department of Joint Surgery The Affiliated Hospital of Qingdao UniversityQingdao 266003Shandong ProvinceChina

With advances in the fields of regenerative medicine,cell-free therapy has received increased *** have a variety of endogenous properties that provide stability for molecular transport across biological barriers to cells,as a form of cell-to-cell communication that regulates function and *** addition,exosomes are an important component of paracrine signaling in stemcell-based therapy and can be used as a stand-alone therapy or as a drug delivery *** remarkable potential of exosomes has paved the pathway for cell-free treatment in bone *** are enriched in distinct noncoding RNAs(ncRNAs),including microRNAs,long ncRNAs and circular *** ncRNAs have multiple *** expression of ncRNA in exosomes is associated with the regenerative potential and development of various diseases,such as femoral head osteonecrosis,myocardial infarction,and *** there is increasing evidence that exosome-derived ncRNAs(exoncRNAs)have the potential for bone regeneration,the detailed mechanisms are not fully ***,we review the biogenesis of exo-ncRNA and the effects of ncRNAs on angiogenesis and osteoblast-and osteoclast-related pathways in different ***,there are still many unsolved problems and challenges in the clinical application of ncRNA;for instance,production,storage,targeted delivery and therapeutic potency *** in exo-ncRNA methods and design will promote the development of therapeutics,revolutionizing the present landscape.

关键词： Exosomes Non-coding RNA Bone Osteogenesis Angiogenesis Osteoclasts

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Poly-L-ornithine blocks the inhibitory effects of fibronectin on oligodendrocyte differentiation and promotes myelin repair

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Neural Regeneration Research 2023年第4期18卷 832-839页

作者： ya-Jie Xiong Shahid Hussain Soomro zhong-Hai Huang Pan-Pan Yu Jie Ping hui Fu Department of Anatomy School of Basic Medical SciencesWuhan UniversityWuhanHubei ProvinceChina Guangdong-Hongkong-Macao Institute of CNS Regeneration Ministry of Education Joint International Research Laboratory of CNS RegenerationJinan UniversityGuangzhouGuangdong ProvinceChina Department of Pharmacology School of Basic Medical SciencesWuhan UniversityWuhanHubei ProvinceChina

The extracellular matrix surrounding oligodendrocytes plays an important role during myelination and remyelination in the *** many cases,the microenvironment surrounding demyelination lesions contains inhibitory molecules,which lead to repair ***,blocking the activity of these inhibitory factors in the extracellular matrix should lead to more successful *** the central nervous system,oligodendrocytes form the myelin *** performed primary cell culture and found that a natural increase in fibronectin promoted the proliferation of oligodendrocyte progenitors during the initial stage of remyelination while inhibiting oligodendrocyte ***-L-ornithine blocked these inhibitory effects without compromising fibronectin’s pro-proliferation *** showed that poly-L-ornithine activated the Erk1/2 signaling pathway that is necessary in the early stages of differentiation,as well as PI3K signaling pathways that are needed in the mid-late *** poly-L-ornithine was tested in a lysolecithin-induced animal model of focal demyelination,it enhanced myelin regeneration and promoted motor function *** findings suggest that poly-L-ornithine has the potential to be a treatment option for clinical myelin sheath injury.

关键词： differentiation Erk1/2 extracellular matrix fibronectin lysolecithin-induced demyelination oligodendrocyte PI3K poly-L-ornithine proliferation remyelination

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Homogeneous nanoparticle dispersion prepared with impurity-free dispersant by the ball mill technique

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Particuology 2013年第4期11卷 441-447页

作者： Lingyun Zhou hui Zhang hui Zhang zhong Zhang National Center for Nanoscience and Technology Beijing 100190 China University of Chinese Academy of Sciences Beijing 100049 China

The homogeneous dispersion of nanoparticles in solvents or polymer matrices is essential for prac- tical application of nanocomposites. In this study, the planetary ball milling technique was used to de-agglomerate silica nanoparticles in butyl acetate. The size of the nanosilica aggregates was evalu- ated by TEM and SEM. With the addition of polyacrylate polymer to the organic solvent, the nanoparticle agglomerates were effectively broken up by planetary ball milling at the proper milling time; however, re-agglomeration occurred after a longer milling time. The results of TGA and FTIR indicated that the polyacrylate molecules could be adsorbed in situ onto the nanoparticles. Behaving similar to a dispersant, the adsorbed polyacrylate reduced the blend viscosity significantly and prevented re-agglomeration of the nanoparticles. Utilizing the polyacrylate polymer both as the dispersant and the polymer matrix, the polyacrylate-based nanocoatings were further prepared. The optical transmittance and haze value of the nanocoatings were found to be sensitive to the dispersion level of the nanoparticles, and the elastic mod- ulus and hardness of the nanocoatings were improved in comparison with those of the neat polymer coating.

关键词： NanoparticleNanocoatingBall millDispersant

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The Citron homology domain of MAP4Ks improves outcomes of traumatic brain injury

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Neural Regeneration Research 2025年第11期20卷 3233-3244页

作者： Xiaoling zhong Wenjiao Tai Meng-Lu Liu Shuaipeng Ma Tianjin Shen Yuhua Zou Chun-Li Zhang Department of Molecular Biology University of Texas Southwestern Medical CenterDallasTXUSA Hamon Center for Regenerative Science and Medicine University of Texas Southwestern Medical CenterDallasTXUSA Peter O’Donnell Jr.Brain Institute University of Texas Southwestern Medical CenterDallasTXUSA

The mitogen-activated protein kinase kinase kinase kinases(MAP4Ks)signaling pathway plays a pivotal role in axonal regrowth and neuronal degeneration following *** targeting this pathway is beneficial to brain injury remains *** this study,we showed that adeno-associated virus-delivery of the Citron homology domain of MAP4Ks effectively reduces traumatic brain injury-induced reactive gliosis,tauopathy,lesion size,and behavioral *** inhibition of MAP4Ks replicated the ameliorative effects observed with expression of the Citron homology ***,the Citron homology domain acted as a dominant-negative mutant,impeding MAP4K-mediated phosphorylation of the dishevelled proteins and thereby controlling the Wnt/β-catenin *** findings implicate a therapeutic potential of targeting MAP4Ks to alleviate the detrimental effects of traumatic brain injury.

关键词： adeno-associated virus Citron homology Citron homology domain gene therapy mitogen-activated protein kinase kinase kinase kinases traumatic brain injury

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Fabrication of multilayer Nb_2O_5 nanoporous film by anodization of niobium foils

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Rare Metals 2015年第2期34卷 77-80页

作者： Guang-zhong Li hui-Ping Tang Wen-yan Zhang Gang Li Lan-Lan Yu ya-Ning Li State Key Laboratory of Porous Metal Materials Northwest Institute for Nonferrous Metal Research

Multilayer Nb2O5 nanoporous films were successfully synthesized on Nb surfaces by the control anodization process in ethylene glycol containing 4 vol% HF and 2 vol% H2O2 electrolyte. The nanoporous films are characterized in detail by field-emission scanning electron microscopy（FESEM）, transmission electron microscopy（TEM）, and X-ray diffraction（XRD）. The Nb_2O_5 nanoporous films have a multilayer morphology with the side wall thickness of ～5 nm, irregular pores with a diameter of ～25 nm, and a length of up to 7.39 lm, depending on the anodization time. A mechanism for the multilayer Nb2O5 nanoporous formation was also discussed. These nanoporous materials can be very useful in the fields of solar cells, gas sensors, catalysts, optical filters, and capacitors.

关键词： Anodization Multilayer Nanoporous film Growth mechanism

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