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Fullerene-derived boron-doped defective nanocarbon for h.gh.y selective h.(2)O_(2) electrosynth.sis

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Nano Research 2024年第3期17卷 1217-1224页

作者： Wangqiang shen Ch.ng Zh.ng Muneerah.Alomar Zh.ling Du Zepeng Yang Junjie Wang Guangqing Xu Jian Zh.ng Jun Lv Xing Lu Sch.ol of Materials Science and Engineering Hefei University of TechnologyHefei 230009China Sch.ol of Energy and Environmental Hebei University of EngineeringHandan 056038China Sch.ol of Materials Science and Engineering Huazhong University of Science and TechnologyWuhan 430074China Department of Ph.sics College of SciencesPrincess Nourah bint Abdulrahman UniversityP.O.Box 84428Riyadh 11671Saudi Arabia

Electroch.mical production of h.drogen peroxide(h.(2)O_(2))via th. two-electron(2e-)path.ay of oxygen reduction reaction(ORR)supplies an auspicious alternative to th. current industrial anth.aquinone ***,it still lacks efficient electrocatalysts to ach.eve h.gh.ORR activity togeth.r with.2e-selectivity ***,a boron-doped defective nanocarbon(B-DC)electrocatalyst is synth.sized by using fullerene frameworks as th. precursor and boric oxide as th. boron *** obtained B-DC materials h.ve a h.erarch.cal porous structure,befitting boron dopants,and abundant topological pentagon defects,exh.biting a h.gh.ORR onset potential of 0.78 V and a dominated 2e-selectivity(over 95%).Remarkably,wh.n B-DC electrocatalyst is employed in a real device,it ach.eves a h.gh.h.(2)O_(2) yield rate(247 mg·L^(-1)·h.(-1)),quantitative Faraday efficiency(~100%),and ultrafast organic pollutant degradation *** th.oretical calculation reveals th.t th. synergistic effect of topological pentagon defects and th. incorporation of boron dopants promote th. activation of th. O_(2) molecule and facilitates th. desorption of oxygen *** finding will be very h.lpful for th. compreh.nsion of th. synergistic effect of topological defects and h.teroatom dopants for boosting th. electrocatalytic performance of nanocarbon toward h.(2)O_(2) production.

关键词： fullerene electroch.mical h.drogen peroxide production oxygen reduction reaction carbon nanomaterials

Tandem h.droalkylation and deoxygenation of lignin-derived ph.nolics to synth.size h.gh.density fuels

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Ch.nese Journal of Ch.mical Engineering 2024年第2期66卷 104-109页

作者： Rui Yu Zh.nsheng shen Yanan Liu Ch.ngxiang Sh. Juncong Qu Lun Pan Zh.nfeng h.ang Xiangwen Zh.n g Ji-Jun Zou Key Laboratory for Green Ch.mical Tech.ology of Ministry of Education School of Chemical Engineering and TechnologyTianjin UniversityTianjin 300072China Collaborative Innovative Center of Ch.mical Science and Engineering(Tianjin) Tianjin 300072China h.ih. Laboratory of Sustainable Ch.mical Transformations Tianjin 300192China

Lignin is th. most abundant naturally ph.nolic biomass,and th. synth.sis of h.gh.performance renewable fuel from lignin h.s attracted significant *** propose th. efficient synth.sis of h.gh.density fuels using simulated lignin cracked oil in tandem with.h.droalkylation and deoxygenation ***,we investigated th. reaction path.ay for th. h.droalkylation of ph.nol,wh.ch.competes with.th. h.drodeoxygenation form *** th.n,we investigated th. effects of metal catalyst types,th. loading amount of metallic,acid dosage,and reactant ratio on th. reaction *** ph.nol h.droalkylation and h.drodeoxygenation were balanced wh.n 180℃ and 5 MPa h.(2)with.th. alkanes yield of 95%.By extending th. substrate to oth.r lignin-derived ph.nolics and simulated lignin cracked oil,we obtained th. polycyclic alkane fuel with.h.gh.density of 0.918 g·ml^(-1)and calorific value of41.2 MJ·L^(-1).Besides,th. fuel h.s good low-temperature properties(viscosity of 9.3 mm^(2)·s^(-1)at 20℃ and freezing point below-55℃),wh.ch.is expected to be used as jet *** work provides a promising way for th. easy and green production of h.gh.density fuel directly from real lignin oil.

关键词： h.gh.density fuel Biofuel h.drogenation Alkylation Lignin Ph.nolics

Enh.nced Crystallization of Poly(butylene adipate-co-tereph.h.late)by a Self-assembly Nucleating Agent

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Ch.nese Journal of Polymer Science 2024年第5期42卷 663-674,I0010页

作者： Ch.ng Zh.u Kun Ch.n Zi-h.ng Zh.ng Meng-Fan Jing Ch.n-Tai Liu Ch.ng-Yu shen Ya-Ming Wang State Key Laboratory of Structural Analysis Optimization and CAE Software for Industrial EquipmentNational Engineering Research Center for Advanced Polymer Processing TechnologyZhengzhou UniversityZhengzhou450002China

Poly(butylene adipate-co-tereph.h.late)(PBAT)is a promising biodegradable flexible polymer but suffers from slow crystallization rate,making it less attractive for some applications like th. injection-molded products in comparison with.low-density polyeth.lene(LDPE).Th.s work aimed to accelerate th. crystallization of PBAT by adding a self-assembly nucleating agent octameth.lenedicarboxylic dibenzoylh.drazide(OMBh..PBAT/OMBh.composites with.various OMBh.contents(0 wt%,0.5 wt%,0.7 wt%,1 wt%,2 wt%,3 wt%and 5 wt%)were prepared th.ough.*** effect of OMBh.on th. crystallization beh.vior,morph.logies and mech.nical properties of PBAT was *** h.gh.st nucleation efficiency value of 59.6%was ach.eved for PBAT with.0.7 wt%OMBh.much.h.gh.r th.n th.t of 22.7%for PBAT with.0.7 wt%*** force microscopy results sh.wed th.t OMBh.formed fine fibers and induced th. formation of transcrystalline layers of *** transform infrared spectroscopy(FTIR)combined with.two-dimensional correlation spectra suggested th.t th. intermolecular dipole-dipole N—h.O=C interactions but not h.drogen bond between OMBh.and PBAT promoted th. crystallization of PBAT in th. initial period of *** presence of OMBh.did not ch.nge th. crystal form of PBAT but h.d positive contribution in enh.ncing its crystallinity and mech.nical *** work is essential for preparing PBAT with.h.gh.crystallization rate,enh.ncing its potential applications in injection-molded products.

关键词： Poly(butylene adipate-co-tereph.h.late) Biodegradable Self-assembly nucleating agent Crystallization

Controllable fabrication of FeCoS_(4) nanoparticles/S-doped bowl-sh.ped h.llow carbon as efficient lith.um storage anode

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Ch.nese Journal of Ch.mical Engineering 2024年第3期67卷 78-88页

作者： Ming Zh.u Mengrong Wu h.iwei Yu Xiangjun Zh.ng Kuan shen Xingmei Guo Yuanjun Liu Fu Cao h.ngxing Gu Qingh.ng Kong Junh.o Zh.ng Sch.ol of Environmental and Ch.mical Engineering Jiangsu University of Science and TechnologyZhenjiang 212003China Jiangsu h.ngshen Co. LtdZhenjiang 212314China Sch.ol of th. Environment and Safety Engineering Jiangsu UniversityZhenjiang 212013China

To address th. low conductivity and easy agglomeration of transition metal sulfide nanoparticles,FeCoS_(4) nanoparticles embedded in S-doped h.llow carbon(FeCoS_(4)@S-h.)composites were successfully fabricated th.ough.a combination of h.droth.rmal processes and sulfidation *** unique bowlsh.ped FeCoS_(4)/S-h. composites exh.bit excellent structural stability with.a h.gh.specific surface area of 303.7 m^(2)·g^(-1) and a pore volume of 0.93 cm^(3)·g^(-1).Wh.n applied as anode material for lith.um-ion batteries,th. FeCoS_(4)@S-h. anode exh.bits efficient lith.um storage with.h.gh.reversible specific capacity(970.2 mA·h.g^(-1) at 100 mA·g^(-1))and enh.nced cycling stability(574 mA·h.g^(-1) at 0.2 A·g^(-1) after 350 cycles,a capacity retention of 84%).Th. excellent lith.um storage is attributed to th. fact th.t th. bimetallic FeCoS_(4) nanoparticles with.abundant active sites can accelerate th. electroch.mical reaction kinetics,and th. bowl-sh.ped S-h. structure can provide a stable mech.nical structure to suppress volume expansion.

关键词： Bimetallic sulfides Bowl-sh.ped h.llow carbon S doping Buffering volume expand Lith.um-ion batteries

Self-sufficient nanoparticles with.dual-enzyme activity trigger radical storms and activate cascade-amplified antitumor immunologic responses

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Acta Ph.rmaceutica Sinica B 2024年第2期14卷 821-835页

作者： Liping Bai Jin Yang Siting Yu Zh.ngzh.ng Xiang Yuanyuan Zeng Meiling shen Xiaorong Kou Qinjie Wu Ch.ngyang Gong Department of Bioth.rapy Cancer Center and State Key Laboratory of BiotherapyWest China HospitalSichuan UniversityChengdu 610041China

Radioth.rapy(RT) can potentially induce systemic immune responses by initiating immunogenic cell death.ICD) of tumor ***,RT-induced antitumor immunologic responses are sporadic and insufficient against cancer ***,we construct multifunctional self-sufficient nanoparticles(MARS) with.dual-enzyme activity(GOx and peroxidase-like) to trigger radical storms and activate th. cascade-amplified systemic immune responses to suppress both.local tumors and metastatic *** addition to limiting th. Warburg effect to actualize starvation th.rapy,MARS catalyzes glucose to produce h.drogen peroxide(h.(2)O_(2)),wh.ch.is th.n used in th. Cu^(+)-mediated Fenton-like reaction and RT *** and ch.modynamic th.rapy produce reactive oxygen species in th. form of radical storms,wh.ch.h.ve a robust ICD impact on mobilizing th. immune ***,wh.n MARS is combined with.RT,potent systemic antitumor immunity can be generated by activating antigen-presenting cells,promoting dendritic cells maturation,increasing th. infiltration of cytotoxic T lymph.cytes,and reprogramming th. immuno suppre ssive tumor ***,th. synergistic th.rapy of RT and MARS effectively suppresses local tumor growth.increases mouse longevity,and results in a 90% reduction in lung metastasis and postoperative ***,we provide a viable approach.to treating cancer by inducing radical storms and activating cascade-amplified systemic immunity.

关键词： Dual-enzyme activity Radioth.rapy Ch.modynamic th.rapy Fenton-likereaction Radical storms Immunogeniccell death Tumormicroenvironment Systemicimmunity

ROS-responsive nanoparticles targeting inflamed colon for synergistic th.rapy of inflammatory bowel disease via barrier repair and anti-inflammation

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Nano Research 2024年第6期17卷 5409-5423页

作者： Ding Wang Qi Jiang Ruoyu shen Lijun Peng Wentao Zh.u Tingting Meng Fuqiang h. Jianwei Wang h.ng Yuan College of Ph.rmaceutical Science Zhejiang UniversityHangzhou 310058China Jinh.a Institute of Zh.jiang University Jinhua 321299China Th. Second Affiliated h.spital Zh.jiang University Sch.ol of Medicine Hangzhou 310009China

Th. destruction of th. intestinal barrier is likely to cause an increase in intestinal permeability and cause path.logical *** studies h.ve demonstrated th.t intestinal barrier function plays an important role in th. occurrence and development of inflammatory bowel disease(IBD).Oral administration is th. most common route for intestinal *** th.s study,a synergistic strategy is proposed for IBD management th.ough.active barrier repair combined with.anti-inflammatory treatment,wh.ch.can interrupt th. path.logical process of IBD,resulting in th. significantly improved efficacy of existing *** on th. specific ph.values and h.gh.reactive oxygen species(ROS)levels in inflammatory sites of IBD,an orally administrated ROS-responsive drug delivery system targeting inflamed colon h.s been designed,and confirmed in vitro and in *** anti-inflammatory drug dexameth.sone acetate(Dex)and th. barrier function regulator LY294002 are delivered by th. synth.sized nanocarrier to treat IBD synergistically by inh.biting inflammation and actively repairing th. intestinal barrier th.ough.tigh. junctions(TJs).Th. accumulation of nanocarriers in th. inflamed colon and synergistic efficacy h.s been validated in mice with.*** brief,a drug delivery system and a th.rapeutic strategy for IBD are successfully developed.

关键词： nanotech.ology reactive oxygen species(ROS)-responsive targeted delivery inflammatory bowel disease(IBD) intestinal barrier combination treatment

Roles of endoph.tic fungi in medicinal plant abiotic stress response and TCM quality development

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Ch.nese h.rbal Medicines 2024年第2期16卷 204-213页

作者： Jiah.o Zh.ng Jiemiao Lu Yich.n Zh. Xiaoxia shen Bo Zh. Luping Qin Sch.ol of Ph.rmaceutical Sciences Zhejiang Chinese Medical UniversityHangzhou 310053China Songyang Institute of Zh.jiang Ch.nese Medical University Songyang 323400China

Medicinal plants,as medicinal materials and important drug components,h.ve been used in traditional and folk medicine for ***,being sessile organisms,th.y are seriously affected by extreme environmental conditions and abiotic stresses such.as salt,h.avy metal,temperature,and water *** plants usually produce specific secondary metabolites to survive such.stresses,and th.se metabolites can often be used for treating h.man ***,medicinal plants h.ve been found to partner with.endoph.tic fungi to form a long-term,stable,and win-win symbiotic *** fungi can promote secondary metabolite accumulation in medicinal *** close relationsh.p can improve h.st plant resistance to th. abiotic stresses of soil salinity,drough.,and extreme *** symbiosis also sh.ds ligh. on plant growth.and active compound ***,we sh.w th.t endoph.tic fungi can improve th. h.st medicinal plant resistance to abiotic stress by regulating active compounds,reducing oxidative stress,and regulating th. cell ion *** also identify th. deficiencies and burning issues of available studies and present promising research.topics for th. *** review provides guidance for endoph.tic fungi research.to improve th. ability of medicinal plants to resist abiotic *** also suggests ideas and meth.ds for active compound accumulation in medicinal plants and medicinal material development during th. response to abiotic stress.

关键词： abiotic stress active compounds endoph.tic fungus medicinal material development medicinal plant

Crystal engineering regulation ach.eving inverse temperature symmetry breaking ferroelasticity in a cationic displacement type h.brid perovskite system

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Ch.nese Ch.mical Letters 2024年第5期35卷 477-481页

作者： Na Wang Wang Luo h.aiyi shen h.akai Li Zejiang Xu Zh.yuan Yue Ch.o Sh. h.ngyun Ye Leping Miao Ch.otic Matter Science Research.Center Department of MaterialsMetallurgy and ChemistryJiangxi University of Science and TechnologyGanzhou 341000China

Ferroelastic h.brid perovskite materials h.ve been revealed th. significance in th. applications of switch.s,sensors,actuators,***,it remains a ch.llenge to design h.gh.temperature ferroelastic to meet th. requirements for th. practical ***,we reported an one-dimensional organicinorganic h.brid perovskites(OIh.)(3-meth.lpyrazolium)CdCl_(3)(3-MBCC),wh.ch.possesses a mmmF2/m ferroelastic ph.se transition at 263 ***,utilizing crystal engineering,we replace-Ch.(3) with.Nh.(2) and-h.wh.ch.increases th. intermolecular force between organic cations and inorganic *** ph.se transition temperature of(3-aminopyrazolium)CdCl_(3)(3-ABCC),and(pyrazolium)CdCl_(3)(BCC)increased by 73 K and 10 K,***,BCC undergoes an unconventional inverse temperature symmetry breaking(ISTB)ferroelastic ph.se transition around 273 ***,it transforms from a h.gh.symmetry low-temperature paraelastic ph.se(point group 2/m)to a low symmetry h.gh.temperature ferroelastic ph.se(point group ī)originating from th. rare mech.nism of displacement of organic cations ph.se *** means th.t crystal BCC retains in ferroelastic ph.se above 273 K until melting point(446 K).Furth.rmore,ch.racteristic ferroelastic domain patterns on crystal BCC are confirmed with.polarized optical *** study enrich.s th. molecular mech.nism of ferroelastics in th. family of organic-inorganic h.brids and opens up a new avenue for exploring h.gh.temperature ferroic materials.

关键词： Organic-inorganic h.brid perovskite Crystal engineering Inverse temperature symmetry breaking Displacement type ph.se transition Ferroelasticity

Experimental investigation of th. polarityswitch.ng process with.different bipolar ionic liquid th.uster operating frequencies

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Plasma Science and Tech.ology 2024年第6期26卷 1-13页

作者：吴湘蓓杨铖罗嘉伟沈岩 Sch.ol of Aeronautics and Astronautics Sun Yat-sen UniversityShenzhen 518107People’s Republic of China shenzh.n Key Laboratory of Intelligent Microsatellite Constellation Shenzhen 518107People’s Republic of China

Th. bipolar ionic liquid th.uster employs ionic liquid as a propellant to disch.rge positively and negatively ch.rged h.gh.energy particles under an alternating current(AC)power source,effectively suppressing electroch.mical reaction and ensuring ch.rge *** an optimal AC supply power source frequency is critical for sustained stable th.uster *** study focuses on th. emission ch.racteristics of th. ionic liquid th.uster under varied AC *** AC power supply was set with.n th. frequency range of 0.5-64 h.,with.eigh. specific frequency conditions selected for *** experimental results indicate th.t th. th.uster operates steadily with.n a voltage range of±1470 to±1920 V,with.corresponding positive polarity current ranging from 0.41 to 4.91μA and negative polarity current ranging from−0.49 to−4.10μ*** voltage polarity switch.ng,an emission delay occurs,manifested as a prominent peak signal caused by circuit capacitance ch.racteristics and a minor peak signal resulting from liquid *** emission test was conducted at 16 h.,demonstrating approximately 1 h.and 50 min of consistent emission before intermittent *** findings underscore th. favorable impact of AC conditions with.n th. 8-16 h. range on th. self-neutralization capability of th. ionic liquid th.uster.

关键词： space electric propulsion ionic liquid th.uster bipolar operation mode frequency