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Sulfur vacancies-induced“Electron Bridge”in Ni_(4)Mo/Sv-Zn_(x)Cd_(1-x)S regulates electron transfer for efficient H_(2)-releasing photocatalysis

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Journal of Energy Chemistry 2023年第4期79卷 64-71页

作者： Xin Zhang Manyi Gao Longyu Qiu Jie Sheng Weiwei Yang Yongsheng Yu State Key Laboratory of Urban Water Resource and Environment School of Chemistry and Chemical EngineeringHarbin Institute of TechnologyHarbin 150001HeilongjiangChina Laboratory for Space Environment and Physical Science Research Center of Basic Space ScienceHarbin Institute of TechnologyHarbin 150001HeilongjiangChina

Despite the existence of plentiful photocatalyst heterojunctions,their separation efficiency and charge flow precision remain low on account of lacking interfacial ***,through a defect-induced heterojunction constructing strategy,Ni4Mo alloys were in-situ grown on the unsaturated coordinated sulfur atoms of sulfur vacancies-rich ZCS(Sv-ZCS)via interfacial Ni-S covalent *** experimental and theoretical results reveal that these unsaturated sulfur atoms induced by sulfur vacancies vastly facilitate to anchor more Ni-Mo nanoparticles and form abundant Ni-S covalent bonds,meanwhile,these sulfur vacancies could form dual internal electric field(IEF)and work with Ni-S covalent bonds as“Electron Bridge”to further accelerate photoelectrons transfer,as well as promote the activation of water molecules and the desorption of hydrogen ***,the optimized Ni_(4)Mo/Sv-ZCS composite achieves an improved photocatalytic hydrogen evolution(PHE)rate of 94.69 mmol h^(-1)g^(-1)without an evident decrease after 6 cycles of photocatalytic tests,which is 21.2 and 1.94 times higher than those of Pt/ZCS and Ni_(4)Mo/ZCS,*** tactic opens a new way for optimizing Zn_(x)Cd_(1-x)S-based heterojunctions by constructing sulfur vacancies and covalent bonds as“Electron Bridge”to enhance the activity of PHE.

关键词： Ni_(4)Mo Sulfur vacancies-rich Zn_(x)Cd_(1-x)S Electron Bridge Photocatalytic hydrogen evolution

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Satellite breakup behaviors and model under the hypervelocity impact and explosion:A review

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Defence technology（防务技术） 2023年第9期27卷 284-307页

作者： Si-yuan Ren Zi-zheng Gong Qiang Wu Guang-ming Song Qing-ming Zhang Pin-liang Zhang Chuan Chen Yan Cao Beijing Institute of Spacecraft Environment Engineering China Academy of Space TechnologyBeijing100094China State Key Laboratory of Explosion Science and Technology Beijing Institute of TechnologyBeijing100081China

The primary causes of satellite breakups are hypervelocity impact and explosion,the research on satellite breakup can be used not only to evaluate the influence of breakup event on the space environment,but also to trace whether the satellite has been deliberately *** is of great significance in both civil and military *** study of satellite breakup behaviors and model is reviewed to summarize the research progress and insufficiency in recent decades,including the satellite breakup experiment,measurement and characterization of fragments,distribution characteristics of breakup fragments,satellite breakup model,*** classical studies are introduced in detail,and the limitations of the current research are pointed *** to the current research results,the contemporary challenges and future directions for satellite breakup study are *** research on satellite breakup is developing in two directions:the miniaturization of satellite size and the complexity of satellite *** study on satellite breakup needs to be explored and deepened on improving the experimental launch speed,expanding the model application range and breakup revealing the results under combined effect of impact and explosion.

关键词： Satellite breakup Space environment Distribution characteristics Hypervelocity impact Explosion

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Plastic quasicrystal-containing alloys prepared by annealing pseudo-high entropy Zr70-75(Al,Ni,Cu,Ag)25-30 glassy alloys

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材料科学技术（英文版） 2025年第5期208卷 1-10页

作者： Cong Liu Chen Yang Jing Ding Xiangxiang Jiang Hongzhi Luo Ao Guo Bingxiang Xu Xuefang Dai Shengli Zhu Guodong Liu State Key Laboratory of Reliability and Intelligence of Electrical Equipment School of Materials Science and EngineeringHebei University of TechnologyTianjin 300130China School of Energy and Machinery Dezhou UniversityDezhou 253023China School of Materials Science and Engineering Tianjin UniversityTianjin 300072China School of Materials Science and Engineering Lanzhou Jiaotong UniversityLanzhou 730070China

A glassy(G)phase was formed for Zr-rich Zr70-75(Al,Ni,Cu,Ag)25_30(atomic percent,at.％)melt-spun alloy *** glassy alloys exhibit the glass transition,followed by a supercooled liquid region and then three-stage *** glass transition temperature and the onset temperature for the first-stage crystallization(Tx1)decrease from 630 to 668 K,respectively for the 70Zr alloy to 619 and 652 K,respectively for the 75Zr *** first-stage exothermic peak is due to the precipitation of an icosahedral quasicrystal(IQ)*** IQ particle size decreases from 10 nm to 6 nm with increasing Zr content from 70 at.％to 74 at.％.The[G+IQ]phases change to Zr2Ni+Zr2(Cu,Ag)phases after the second exothermic peak and then Zr2Ni+Zr2(Cu,Ag)+Zr5Al3 phases after the third *** is noticed that the as-spun glassy alloy ribbons as well as the annealed[G+IQ]phase ribbons exhibit good bending ***,the 70Zr thicker ribbons also exhibit high tensile fracture strength of 1090-1187 MPa and plastic elongation of 0.17％-0.42％.The fracture mode is similar to that of ordinary bulk metallic *** Vickers hardness(Hv)is 480 for 70Zr alloy and decreases to 436 for 75Zr *** precipitation of IQ phase causes a significant increase in Hv to about *** formations of glassy alloys with high Zr contents of 70 at.％-75 at.％by melt spinning as well as the[G+IQ]phase alloys with good bending plasticity by annealing hold promise for the creation of a new type of engineering material,transcending mere academic novelty.

关键词： Pseudo-high entropy glassy alloy Icosahedral quasicrystal Plasticity Mechanical property

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Hyphae-mediated bioassembly of carbon fibers derivatives for advanced battery energy storage

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Carbon Energy 2024年第6期6卷 140-150页

作者： Lei Huang Zhong Qiu Ping Liu Xinhui Xia Feng Cao Xinping He Chen Wang Wangjun Wan Yongqi Zhang Yang Xia Wenkui Zhang Minghua Chen Jiancang Zhou Department of Critical Care Medicine Sir Run Run Shaw HospitalSchool of MedicineZhejiang UniversityHangzhouChina State Key Laboratory of Silicon Materials Key Laboratory of Advanced Materials and Applications for Batteries of Zhejiang ProvinceSchool of Materials Science&EngineeringZhejiang UniversityHangzhouChina College of Materials Science&Engineering Zhejiang University of TechnologyHangzhouChina State Key Laboratory of Photocatalysis on Energy and Environment Fuzhou UniversityFuzhouChina Department of Engineering Technology Huzhou CollegeHuzhouChina Zhejiang Academy of Science and Technology for Inspection&Quarantine HangzhouZhejiangChina Institute of Fundamental and Frontier Science University of Electronic Science and Technology of ChinaChengduChina Key Laboratory of Engineering Dielectric and Applications(Ministry of Education) School of Electrical and Electronic EngineeringHarbin University of Science and TechnologyHarbinChina

Ingenious design and fabrication of advanced carbon-based sulfur cathodes are extremely important to the development of high-energy lithium-sulfur batteries,which hold promise as the next-generation power ***,for the first time,we report a novel versatile hyphae-mediated biological assembly technology to achieve scale production of hyphae carbon fibers(HCFs)derivatives,in which different components including carbon,metal compounds,and semiconductors can be homogeneously assembled with HCFs to form composite *** mechanism of biological adsorption assembly is also *** a representative,reduced graphene oxides(rGOs)decorated with hollow carbon spheres(HCSs)successfully co-assemble with HCFs to form HCSs@rGOs/HCFs hosts for sulfur *** this unique architecture,not only large accommodation space for sulfur but also restrained volume expansion and fast charge transport paths are ***,multiscale physical barriers plus chemisorption sites are simultaneously established to anchor soluble lithium ***,the designed HCSs@rGOs/HCFs-S cathodes deliver a high capacity(1189 mA h g^(-1)at 0.1 C)and good high-rate capability(686 mA h g^(-1)at 5 C).Our work provides a new approach for the preparation of high-performance carbon-based electrodes for energy storage devices.

关键词： bioassembly carbon fibers energy storage graphene lithium-sulfur batteries

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Photo-transformation of nitrate and fulvic acid driven by guest iron minerals

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Frontiers of environmental science & engineering 2025年第1期19卷 115-128页

作者： Na Huang Yuanyuan Chen Xuyin Yuan Yingying Li Yin Lu Yilan Jiang Huacheng Xu Lingxiao Ren Dawei Wang Key Laboratory of Integrated Regulation and Resource Development of Shallow Lakes(Ministry of Education) College of EnvironmentHohai UniversityNanjing 210098China State Key Laboratory of Lake Science and Environment Nanjing Institute of Geography and LimnologyChinese Academy of SciencesNanjing 210008China School of Environmental Engineering Nanjing Institute of TechnologyNanjing 210008China

The photochemical interactions between nitrate(NO_(3)^(-))and natural organic matter(NOM)are vital for aquatic ***,the effects of guest iron minerals,which may enter the aquatic environments due to both human and natural activities,on those interactions are widely *** work evaluated the effects of hematite(α-Fe_(2)O_(3))on the photochemical conversion products and pathways of NO_(3)^(-),fulvic acid(FA)under 12 h of ultraviolet *** addition of 0.4 g/L of guestα-Fe_(2)O_(3)accelerated the reduction of NO_(3)^(-)by 24.3%,with NH4+as the primary reduction product,and hampered the mineralization of *** effects were dependent on the dosage amount ofα-Fe2O3 and FA *** studies on the molecule-level changes of FA revealed that the complete oxidation to CO_(2)and the partial oxidation pathways that alter the molecular composition of FA were suppressed,and the mineralization rate decreased by 27.8%.Particularly,the conversion rates of CHON and CHONS were reduced by 21.0%and 20.3%,respectively,increasing the unsaturated *** scavenging experiments and quantitative measurements of hydroxyl radicals(•OH)proposed that the photogenerated electrons and holes fromα-Fe_(2)O_(3)were the key for the altered transformation of NO3-and *** work revealed the guest effects of iron mineral particles on the photochemical interactions between NO_(3)^(-)and NOM in the natural surface waters.

关键词： Guest iron minerals Photochemistry Nitrate Fulvic acid Conversion

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Predictably synthesizing a library of white-light-emitting perovskites

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science China Chemistry 2023年第3期66卷 760-767页

作者： Ludan Niu Lili Zhao Deyu Li Qian Chen Mingming Zhang Jing Luan Lei Wang Weigao Xu Jun Xing Key Laboratory of Eco-chemical Engineering Ministry of EducationCollege of Chemistry and Molecular EngineeringQingdao University of Science&TechnologyQingdao 266042China Key Laboratory of Mesoscopic Chemistry Ministry of EducationSchool of Chemistry and Chemical EngineeringNanjing UniversityNanjing 210023China School of Materials Science and Technology Qingdao University of Science&TechnologyQingdao 266042China Shandong Engineering Research Center for Marine Environment Corrosion and Safety Protection College of Environment and Safety EngineeringQingdao University of Science and TechnologyQingdao 266042China

The low-dimensional organic-inorganic halide perovskites with self-trapped exciton emission have promising prospects for single-phase white-light emitters. However, so far, these broadband white-light-emitting(BWLE) perovskites were synthesized by trial-and-error testing spacing molecules. Here, we developed a steric hindrance regulation strategy to predictably synthesize BWLE perovskites. The molecules containing C–C(–NH_(2))–C groups were introduced into low-dimensional perovskites, which brings a large steric hindrance in-plane orientation. The bigger C–C(–NH_(2))–C bond angle would induce larger structural distortion in perovskites, which leads to the higher rate of self-trapping of excitons and the deeper self-trapping depth. The photoluminescence spectra of the synthesized perovskites can cover the cool-to-warm white light region. Overall, we fabricated a material library consisting of 40 kinds of BWLE compounds according to this strategy. Our findings develop a general strategy to synthesize BWLE perovskites and offer a material platform for optoelectronic applications.

关键词： white-light emission halide perovskite steric hindrance two-dimensional

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Structure and corrosion behavior of FeCoCrNiMo high-entropy alloy coatings prepared by mechanical alloying and plasma spraying

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International Journal of Minerals,Metallurgy and Materials 2024年第12期31卷 2692-2705页

作者： Yun Tian Jianing Liu Mingming Xue Dongyao Zhang Yuxin Wang Keping Geng Yanchun Dong Yong Yang School of Materials Science and Engineering Hebei University of TechnologyTianjin 300132China Key Lab.for New Type of Functional Materials in Hebei Province School of Materials Science and EngineeringState Key Laboratory of Reliability and Intelligence of Electrical EquipmentHebei University of TechnologyTianjin 300132China School of Mechanical Engineering Tianjin Sino-German University of Applied SciencesTianjin 300132China

FeCoCrNiMox composite powders were prepared using the mechanical alloying technique and made into high-entropy alloy(HEA)coatings with the face-centered cubic phase using plasma spraying to address the element segregation problem in HEAs and pre-pare uniform HEA *** electron microscopy,transmission electron microscopy,and X-ray diffractometry were employed to characterize these coatings’microstructure and phase *** hardness,elastic modulus,and fracture toughness of coatings were tested,and the corrosion resistance was analyzed in simulated *** show that the hardness of the coating is HV0.1606.15,the modulus of elasticity is 128.42 GPa,and the fracture toughness is 43.98 MPa·m^(1/2).The corrosion potential of the coating in 3.5wt%NaCl solution is-0.49 V,and the corrosion current density is 1.2×10^(−6)A/cm^(2).The electrochemical system comprises three parts:the electrolyte,the adsorption and metallic oxide films produced during immersion,and the FeCoNiCrMo HEA *** in-creasingly long periods,the corrosion reaction rate increases first and then decreases,the corrosion product film comprising metal oxides reaches a dynamic balance between formation and dissolution,and the internal reaction of the coating declines.

关键词： high-entropy alloy coatings plasma spray mechanical alloying microstructure corrosion behavior mechanical property

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Experimental investigation on the gravity driven discharge of cohesive particles from a silo with two outlets

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Particuology 2024年第6期89卷 11-21页

作者： Li Dai Zhulin Yuan Fengxian Fan Conghui Gu School of Energy and Power Engineering University of Shanghai for Science and TechnologyShanghai 200093China Key Laboratory of Energy Thermal Conversion and Control of Ministry of Education School of Energy and EnvironmentSoutheast UniversityNanjing 210096China Shanghai Key Laboratory of Multiphase Flow and Heat Transfer in Power Engineering University of Shanghai for Science and TechnologyShanghai 200093China School of Energy and Power Jiangsu University of Science and TechnologyZhenjiang 212100China

An experimental study on the gravity driven discharge of cohesive particles from a silo with two outlets was *** discharge behaviors under the conditions that a single outlet was open and two outlets were open were investigated by varying the moisture content of the particles and the filling height of the particles in the *** results show that the discharge rate of the cohesive particles increases gradually at the beginning,then almost keeps constant,and finally drops *** discharge rate in case of two openings is around 1.1–1.6 times that in case of a single *** filling height leads to lower discharge rate in case of a single opening but results in higher discharge rate in case of two ***,the avalanche dynamics in case of a single opening was examined,and the mixing behavior of the cohesive particles was *** is observed that the discharge flow is promoted by the avalanche phenomenon in the silo,generating a general trend that the normalized mass of discharge increases with the filling height at higher moisture *** case of a single opening,the transition from mass flow to funnel flow favors the particle mixing,resulting in an increasing mixing index as the moisture content *** general,a better performance of mixing can be achieved in case of a single opening compared with in case of two *** study provides vital information for fundamental understanding of the gravity driven discharge of cohesive particles from the silo with multiple outlets.

关键词： Cohesive particles Moisture content Discharge rate Avalanche Mixing

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Stereoselective effects and its potential mechanism of ofloxacin on the growth and development of Rana nigromaculata:mainly liver lipid metabolism

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Frontiers of environmental science & engineering 2025年第4期19卷 125-138页

作者： Wenjun Zhang Miaomiao Teng Jin Yan Key Laboratory of Integrated Regulation and Resources Development on Shallow Lakes of Ministry of Education College of EnvironmentHohai UniversityNanjing 210098China State Key Laboratory of Environmental Criteria and Risk Assessment Chinese Research Academy of Environmental SciencesBeijing 100012China National and Local Joint Engineering Laboratory of Municipal Sewage Resource Utilization Technology School of Environmental Science and EngineeringSuzhou University of Science and TechnologySuzhou 215009China

Most research on antibiotics in the environment disregards chiral antibiotics,such as ofloxacin(OF).In this study,tadpoles of Rana nigromaculata were exposed to 1μg/L OF and levofloxacin(LVFX,an enantiomer of OF)for 75 *** with dextrofloxacin,LVFX treatment had a greater effect on the inhibition of bodyweight,body length,development stage,and pathological liver ***,OF exerts a stereoselective inhibitory effect on both growth and development,which is consistent with the results at the systemic metabolism *** analysis revealed that the differentially expressed genes between OF and LVFX were mainly immune *** metabolomics showed that the stereoselective biological effect of OF on *** was caused by differences in contents of PE-O 16:0-22:4,PE 16:0-14:0,TAG 45:0-FA16:0,PE-P 18:0-16:0,PE 16:0-16:0,PC 16:0-22:4+AcO,PE 18:1-18:3,PC 16:1-18:1+AcO,and PC 18:1-18:3+***,two enantiomers of OF were selectively bound to enzymes related to lipid *** study provides both theoretical and practical references for the accurate evaluation and scientific control of the ecological risk of chiral antibiotics.

关键词： Chiral antibiotics Amphibians Targeted metabolomics Molecular docking Obesity

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Sequence structure controllable polymerization-induced self-assembly

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science China Chemistry 2024年第1期67卷 390-397页

作者： Zi-Xuan Chang Ren-Man Zhu Chun-Yan Hong Wen-Jian Zhang Department of Polymer Science and Engineering University of Science and Technology of ChinaHefei 230026China Institute of Physical Science and Information Technology Anhui UniversityHefei 230601China Key Laboratory of Environment-Friendly Polymeric Materials of Anhui Province Anhui UniversityHefei 230601China

Polymerization-induced self-assembly(PISA)combines synthesis and self-assembly of artificial polymers in one-pot,which brings us one step closer to emulating ***,the reported PISA formulations primarily focus on developing nano-objects with new chemical compositions and rarely on structural regulation of polymers with specific ***,sequence structure controllable polymerization-induced self-assembly(SCPISA)is reported by using 7-(2-methacryloyloxyethoxy)-4-methylcoumarin(CMA)as a *** the copolymerization of 2-hydroxyethyl methacrylate(HEMA)and CMA,controlled incorporation of CMA units into the polymer chains can be realized by programmable light/heat ***-based P(HEMA-co-CMA)copolymers with the same composition but different sequence structures generate a range of ***,the morphologies of the resultant nano-objects can also be controlled by regulating the feed molar ratio of CMA and HEMA,which is similar to the conventional PISA,but the synthesis procedure is obviously simplified in *** versatility of the methodology is further demonstrated by the fabrication of different functional nano-objects with sequence structure-dependent morphologies in SCPISA systems with different functional monomers.

关键词： polymerization-induced self-assembly sequence-controlled polymers PET-RAFT polymerization

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