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Change of Electrical and Transport Properties of Nickel Oxide by Carrier Concentration and Temperature through First‑Principle Calculations

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Nanomanufacturing and Metrology 2023年第4期6卷 109-118页

作者： Nayem Md.Reza Shah Chang‑Dong Yeo Minyeong Choi Yang‑Ki Hong Jeong H.You Department of Mechanical Engineering Texas Tech UniversityLubbockTX 79409USA Department of Electrical and Computer Engineering and Material Science Ph.D.Program The University of AlabamaTuscaloosaAL 35487USA Department of Mechanical Engineering School of EngineeringUniversity of St.ThomasSt.PaulMN 55105USA

Nickel is typically used as one of the main components in electrical contact devices or *** oxide(NiO)is usually formed on the surfaces of electrodes and can negatively impact system performance by introducing electrical contact *** thermal,electrical,and transport properties of NiO,as a Mott insulator or a p-type semiconductor,can be altered by operating and environmental conditions such as temperature and stress/strain by *** this study,we inves-tigate the fundamental material properties of NiO through the first-principle ***,we obtain and compare the lattice parameter,magnetic moment,and electronic structure for NiO via the WIEN2K simulations with four different poten-tials(i.e.,GGA,GGA+U,LSDA,and LSDA+U).Then,using the WIEN2K simulation results with LSDA+U potential that produces a highly accurate bandgap for NiO,we calculate the electrical conductivity and electrical part of the thermal conductivity of nickel and NiO as a function of temperature and carrier concentration through the BoltzTraP *** simulation results revealed that the electrical conductivity relative to the relaxation time for NiO increases with the carrier concentration,while it shows a slightly decreasing trend with temperature under a fixed carrier *** contrast,the electrical part of the thermal conductivity shows an increasing trend considering carrier concentration and temperature.

关键词： Nickel oxide Magnetic moments Density of states Seebeck coefcient Electrical conductivity

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Biliary stents for active materials and surface modification:Recent advances and future perspectives

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Bioactive materials 2024年第12期42卷 587-612页

作者： Yuechuan Li Kunshan Yuan Chengchen Deng Hui Tang Jinxuan Wang Xiaozhen Dai Bing Zhang Ziru Sun Guiying Ren Haijun Zhang Guixue Wang Key Laboratory for Biorheological Science and Technology of Ministry of Education National Local Joint Engineering Laboratory for Vascular ImplantsBioengineering College of Chongqing UniversityChongqing400044China Shanghai Tenth People’s Hospital School of MedicineTongji UniversityShanghai200092China National United Engineering Laboratory for Biomedical Material Modification Dezhou251100China School of Biosciences and Technology Chengdu Medical CollegeChengdu610500China Nanjing Key Laboratory for Cardiovascular Information and Health Engineering Medicine(CVIHEM) Drum Tower HospitalNanjing UniversityNanjingChina College of materials science and engineering Shandong University of TechnologyZibo25500ShandongChina

Demand for biliary stents has expanded with the increasing incidence of biliary *** implantation of plastic or self-expandable metal stents can be an effective treatment for biliary ***,these stents are nondegradable and prone to *** removal or replacement of the nondegradable stents is necessary in cases of disease resolution or *** overcome these shortcomings,improvements were made to the materials and surfaces used for the ***,this paper reviews the advantages and limitations of nondegradable ***,emphasis is placed on biodegradable polymer and biodegradable metal stents,along with functional *** also encompasses tissue engineering&3D-printed stents were ***,the future perspectives of biliary stents,including pro-epithelialization coatings,multifunctional coated stents,biodegradable shape memory stents,and 4D bioprinting,were discussed.

关键词： Biliary stent Biodegradable Functional coatings Tissue engineering&3D-printed stent Shape memory

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Cartilage-targeting and inflammatory-responsive nanocarriers for effective osteoarthritis treatment via reactive oxygen species scavenging and anti-angiogenesis

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Journal of materials science & Technology 2023年第12期143卷 30-42页

作者： Sixiang Wang Yan Gao Lili Dong Peixing Chen Wanqian Liu Li Yang National Innovation and Attracting Talents“111”base Key Laboratory of Biorheological Science and TechnologyMinistry of EducationCollegeof BioengineeringChongqing UniversityChongqing 400030China Department of Orthopaedics The First Affiliated Hospital of Chongqing Medical UniversityChongqing 400042China Chongqing Key Laboratory of Nano/Micro Composite Material and Device School of Metallurgy and Materials EngineeringChongqing University of Science and TechnologyChongqing 401331China

Osteoarthritis(OA),a common disabling joint disease,is highly associated with microenvironmental changes in the cartilage and subchondral *** reactive oxygen species(ROS)in the cartilage and subchondral bone angiogenesis accelerate articular cartilage *** cartilage-targeting drug deliv-ery systems that are aimed at preventing ROS production and angiogenesis may be of clinical significance for OA ***,an ROS scavenger and an inflammatory-responsive nanocarrier are designed by immobilizing the natural polyphenol(curcumin)in chitosan-catechol nanoformulations(Cur-CS-C NPs)via boronate *** robust cartilage-targeting effects and ROS scavenging capacities of Cur-CS-C NPs were respectively determined in cartilage explants and ***-articular injection of Cur-CS-C NPs in OA rat models efficiently suppressed angiogenesis and cartilage degradation partially via the ROS-mediated NF-κB/PI3K-Akt signaling *** developed curcumin-functionalized nanocarriers can significantly delay OA progression and provide a promising therapeutic strategy for other inflamma-tory diseases that are characterized by oxidative stress and angiogenesis.

关键词： Osteoarthritis Reactive oxygen species Angiogenesis Cartilage-targeting Drug delivery systems Chitosan-catechol nanocarriers

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Effect of chemical composition and microstructure on the thermal conductivity of Mg-Al-Ca alloys

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Keikinzoku/Journal of Japan Institute of Light Metals 2024年第1期74卷 9-13页

作者： Kirimoto, Yuichi Kondo, Natsuki Ito, Mizuki Tsukeda, Tadayoshi Aida, Tetsuo Tabata, Hironobu Kurihara, Hideki Suzuki, Mayumi Department of Nano and Functional Material Science Graduate School of Science and Engineering for Education University of Toyama 3190 Gofuku Toyama-shi Toyama930-8555 Japan School of Sustainable Design Materials and Engineering University of Toyama Toyama-shi Toyama Japan Program of Materials Science and Engineering Studies in Science and Engineering Graduate School of Science and Engineering University of Toyama Toyama-shi Toyama Japan Faculty of Sustainable Design Academic Assembly University of Toyama Toyama-shi Toyama Japan CHUETSU METAL WORKS CO. LTD. Nakaniikawa-gun Toyama Japan Saitama Industrial Technology Center Kawaguchi-shi Saitama Japan Department of Mechanical Systems Engineering Faculty of Engineering Toyama Prefectural University Imizu-shi Toyama Japan

In recent years, the increasing demand for electric vehicles, digital devices such as PCs and smartphones, and renewable energy storage systems has created a need for higher-performance batteries. Accordingly, the thermal conductivity of the case that houses the battery is becoming increasingly important. In this study, compositions with high thermal conductivity and good castability were investigated, focusing on Mg-Al-Ca alloys, and the relationship between the two was examined through thermal conductivity measurements and microstructural observations. As a result, the Mg-6%Al-4%Ca alloy was optimal in terms of castability and thermal conductivity. It was confirmed that a lower Al solid solution capacity and a higher purity of the matrix phase are important to improve the thermal conductivity. It is also suggested that the second phase, platelet Al2Ca, is likely to be recognized and enriched in the matrix, contributing to the improvement of thermal conductivity. The amount of Ca solid solution in the matrix was suggested to be reduced by the enrichment of Al in the matrix. The Ca solid solution in the matrix was found to be less effective in reducing thermal conductivity than the Al solid solution. © 2024 The Japan Institute of Light Metals.

关键词： Magnesium alloys

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Enhancement of lactate fraction in poly(lactate-co-3-hydroxybutyrate)biosynthesized by metabolically engineered ***

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Bioresources and Bioprocessing 2024年第1期11卷 1170-1178页

作者： Binghao Zhang Pengye Guo Xinye Sun Yanzhe Shang Yuanchan Luo Hui Wu State Key Laboratory of Bioreactor Engineering Shanghai Frontiers Science Center of Optogenetic Techniques for Cell MetabolismSchool of BiotechnologyEast China University of Science and Technology130 Meilong RoadShanghai 200237China MOE Key Laboratory of Bio-Intelligent Manufacturing School of BioengineeringDalian University of TechnologyDalianChina Shanghai Collaborative Innovation Center for Biomanufacturing Technology 130 Meilong RoadShanghai 200237China Key Laboratory of Bio-based Material Engineering of China National Light Industry Council130 Meilong RoadShanghai 200237China

Poly(lactate-co-3-hydroxybutyrate)[P(LA-co-3HB)]is a high-molecular-weight biomaterial with excellent biocompatibility and *** this study,the properties of P(LA-co-3HB)were examined and found to be affected by its lactate *** efficiency of lactyl-CoA biosynthesis from intracellular lactate significantly affected the microbial synthesis of P(LA-co-3HB).Two CoA transferases from Anaerotignum lactatifermentans and Bacillota bacterium were selected for use in copolymer biosynthesis from 11 *** found that cotAl enhanced the lactate fraction by 31.56%compared to that of the frequently used modified form of propionyl-CoA transferase from Anaerotignum *** addition,utilizing xylose as a favorable carbon source and blocking the lactate degradation pathway further enhanced the lactate fraction to 30.42 mol%and 52.84 mol%,***,when a 5 L bioreactor was used for fermentation utilizing xylose as a carbon source,the engineered strain produced 60.60 wt%P(46.40 mol%LA-co-3HB),which was similar to the results of our flask *** results indicate that the application of new CoA transferases has great potential for the biosynthesis of other lactate-based copolymers.

关键词： Poly(lactate-co-3-hydroxybutyrate) Lactyl-CoA CoA transferases Lactate-based copolymers

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engineering of fast-growing Vibrio natriegens for biosynthesis of poly(3-hydroxybutyrate-co-lactate)

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Bioresources and Bioprocessing 2024年第1期11卷 1148-1156页

作者： Xinye Sun Yanzhe Shang Binghao Zhang Pengye Guo Yuanchan Luo Hui Wu State Key Laboratory of Bioreactor Engineering Shanghai Frontiers Science Center of Optogenetic Techniques for Cell MetabolismSchool of BiotechnologyEast China University of Science and Technology130 Meilong RoadShanghai 200237China MOE Key Laboratory of Bio-Intelligent Manufacturing School of BioengineeringDalian University of TechnologyDalianChina Shanghai Collaborative Innovation Center for Biomanufacturing Technology 130 Meilong RoadShanghai 200237China Key Laboratory of Bio-based Material Engineering of China National Light Industry Council130 Meilong RoadShanghai 200237China

Poly(3-hydroxybutyrate-co-lactate)[P(3HB-co-LA)]is a highly promising valuable biodegradable material with good biocompatibility and *** natriegens,owing to its fast-growth,wide substrate spectrum characteristics,was selected to produce P(3HB-co-LA).Herein,the crucial role of acetyltransferase PN96-18060 for PHB synthesis in *** was *** pathway of P(3HB-co-LA)was introduced into *** successfully,in addition,overexpression of the dldh gene led to 1.84 fold enhancement of the lactate content in P(3HB-co-LA).Finally,the production of P(3HB-co-LA)was characterized under different carbon *** lactate fraction in P(3HB-co-LA)was increased to 28.3 mol%by the modification,about 1.84 times of that of the *** is the first successful case of producing the P(3HB-co-LA)in ***,this study showed that *** is an attractive host organism for producing P(3HB-co-LA)and has great potential to produce other co-polymers.

关键词： Poly(3-hydroxybutyrate-co-lactate) Vibrio natriegens Metabolic engineering Lactate fraction

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Surface group directed low-temperature synthesis and self-assembly of Al nanostructures for lithium storage

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Nano Research 2023年第1期16卷 1733-1739页

作者： Xianglong Kong Zhi Li Xudong Zhao Shunpeng Chen Zhuoyan Wu Fei He Piaoping Yang Xinghua Chang Xingguo Li Zhiliang Liu Jie Zheng College of Material Sciences and Chemical Engineering Harbin Engineering UniversityHarbin 150001China Beijing National Laboratory for Molecular Sciences College of Chemistry and Molecular EngineeringPeking UniversityBeijing 100871China Comprehensive Energy Research Center Institute of Science and TechnologyChina Three Gorges CorporationBeijing 100038China Key Laboratory for Mineral Materials and Application of Hunan Province School of Minerals Processing and BioengineeringCentral South UniversityChangsha 410083China

Nanostructured aluminum recently delivers a variety of new applications of the earth-abundant Al resource due to the unique properties,but its controllable synthesis remains very challenging with harsh conditions and spontaneously flammable ***,a surface group directed method is developed to efficiently achieve low-temperature synthesis and selfassembly of zero-dimensional(0D)Al nanocrystals over one-dimensional(1D)carbon fibers(Al@CFs)through non-flammable AlCl3 reduction at 70°*** calculations unveil surface‒OLi groups of carbon fibers exert efficient binding effect to AlCl3,which guides intimate adsorption and in-situ self-assembly of the generated Al *** distinctive 0D-over-1D Al@CFs provides long 1D conductive networks for electron transfer,ultrafine 0D Al nanocrystals for fast lithiation and excellent buffering effect for volume change,thus exhibiting high structure stability and superior lithium storage *** work paves the way for mild and controllable synthesis of Al-based nanomaterials for new high-value applications.

关键词： Al nanostructure low-temperature synthesis self-assembly surface group lithium storage

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Morphology effects in MnCeO_(x)solid solution-catalyzed NO reduction with CO:Active sites,water tolerance,reaction pathway

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Nano Research 2023年第5期16卷 6951-6959页

作者： Quanquan Shi Yifei Zhang Zhiwen Li Zhongkang Han Liangliang Xu Alfons Baiker Gao Li College of Science&College of Material Science and Art Design Inner Mongolia Agricultural UniversityHohhot 010018China College of Chemistry and Chemical Engineering Shenyang Normal UniversityShenyang 110034China State Key Laboratory of Catalysis Dalian Institute of Chemical PhysicsChinese Academy of SciencesDalian 116023China School of Materials Science and Engineering Zhejiang UniversityHangzhou 310027China Department of Chemical and Biomolecular Engineering Korea Advanced Institute of Science and TechnologyDaejeon 34141Republic of Korea Department of Chemistry and Applied Biosciences Institute for Chemical and BioengineeringETH ZurichHönggerbergHClCH-8093 ZurichSwitzerland

Morphological effects of nanoparticles are crucial in many solid-catalyzed chemical *** herein prepared two manganese-ceria solid solutions,well-defined MnCeO_(x)nanorods and MnCeO_(x)-nanocubes,exposing preferentially(111)and(100)facets of ceria,*** incorporation of Mn dopant into ceria lattice strongly enhanced the catalytic performance in the NO reduction with ***_(x)(111)catalyst outperformed MnCeO_(x)(100)counterpart due to its higher population density of oxygen vacancy ***-situ infrared spectroscopy investigations indicated that the reaction pathway over MnCeO_(x)and pristine CeO_(2)is similar and that besides the direct pathway,an indirect pathway via adsorbed hyponitrite as an intermediate cannot be ruled out.X-ray photoelectron and Raman spectroscopies as well as first-principles density functional theory(DFT)calculations indicate that the enhanced catalytic performance of MnCeO_(x)can be traced back to its“Mn–OL(VÖ)–Mn–OL(VÖ)–Ce”*** Mn dopant strongly facilitates the formation of surface oxygen vacancies(VÖ)by liberating surface lattice oxygen(OL)via CO*+OL→CO_(2)*+VÖand promotes the reduction of NO,according to NO*+VÖ→N*+OL and 2N*→N_(2).The Mn dopant impact on both the adsorption of CO and activation of OL reveals that a balance between these two effects is critical for facilitating all reaction steps.

关键词： NO reduction with CO manganese-ceria solid solution morphology effects reaction mechanism active sites

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Physicochemical properties of lard oil and rubber seed oil blends and their comprehensive characterization

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Chinese Journal of Chemical engineering 2024年第11期75卷 1-13页

作者： Amonrat Thangthong Wuttichai Roschat Phongsakorn Pholsupho Aekkaphon Thammayod Sunti Phewphong Tappagorn Leelatam Preecha Moonsin Boonyawan Yoosuk Pathompong Janetaisong Vinich Promarak Program of Environment Science Faculty of Science and TechnologySakon Nakhon Rajabhat UniversityMueang DistrictSakon Nakhon 47000Thailand Biomass Energy Research Laboratory Center of Excellence on Alternative EnergyResearch and Development InstitutionSakon Nakhon Rajabhat UniversityMueang DistrictSakon Nakhon 47000Thailand Program of Chemistry Faculty of Science and TechnologySakon Nakhon Rajabhat UniversityMueang DistrictSakon Nakhon 47000Thailand Innovation in Chemistry for Community Research Unit Faculty of Science and TechnologySakon Nakhon Rajabhat UniversityMueang DistrictSakon Nakhon 47000Thailand Appropriated Technology Center Faculty of Science and TechnologySakon Nakhon Rajabhat UniversityMueang DistrictSakon Nakhon 47000Thailand Program of Chemistry Faculty of ScienceUbon Ratchathani Rajabhat UniversityMueang DistrictUbon Ratchathani 34000Thailand National Energy Technology Center(ENTEC) 114 Thailand Science ParkPhahonyothin RoadKlong LuangPathumthani 12120Thailand Department of Material Science and Engineering School of Molecular Science&EngineeringVidyasirimedhi Institute of Science and TechnologyWangchanRayong 21210Thailand

This research investigates the potential of blending complementary lard oil with rubber seed oil as feedstock for biodiesel *** seed oil,obtained through hexane extraction using the Soxhlet method,contains the major fatty acids of oleic acid(C_(18:1)),palmitic acid(C_(16:0)),linoleic acid(C_(18:2)),and stearic acid(C_(18:0)),while rubber seed oil primarily consists of linoleic acid(C_(18:2)),oleic acid(C_(18:1)),linolenic acid(C_(18:3)),palmitic acid(C_(16:0)),and stearic acid(C_(18:0)).The least acid value of lard oil(0.55 mg KOH/g)can benefit of reducing soap formation of rubber seed oil during transesterification process in biodiesel production due to its substantial-high acid value(16.28 mg KOH/g).Blending at ratios below 80:20 volume ratio produced biodiesel exceeding 85%,utilizing CaO as a *** oil demonstrated a higher reaction rate constant(11.88×10^(-3)min^(-1))than rubber seed oil(2.11×10^(-3)min^(-1)),indicating a significant difference in *** acid value and free fatty acids in rubber seed oil correlated with lower reaction *** a mixture ratio below 80:20 volume ratio optimized reaction rates during biodiesel *** obtained from blends below 80:20 volume ratio met ASTM D6751 and EN 14214 standards,demonstrating suitability for bio-auto *** drawbacks of using rubber seed oil as a raw material for biodiesel production are overcome by blending with lard oil,giving rise to expanding renewable energy options for rural communities,community enterprises,and large-scale biodiesel production.

关键词： Biodiesel oil Rubber seed oil Lard oil High free fatty acid Physicochemical properties Liquid biofuels

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Improvement of corrosion resistance and heat dissipation of Mg-6%Al-4%Ca alloy by the addition of Mn, Mm, and the surface treatment

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Keikinzoku/Journal of Japan Institute of Light Metals 2023年第12期73卷 646-650页

作者： Ito, Mizuki Kondo, Natsuki Kirimoto, Yuichi Tsukeda, Tadayoshi Aida, Tetsuo Tabata, Hironobu Kurihara, Hideki Suzuki, Mayumi Program of Materials Science and Engineering Studies in Science and Engineering Graduate School of Science and Engineering University of Toyama 3190 Gofuku Toyama-shi Toyama930-8555 Japan School of Sustainable Design Materials and Engineering University of Toyama Toyama Toyama-shi Japan Department of Nano and Functional Material Science Graduate School of Science and Engineering for Education University of Toyama Toyama Toyama-shi Japan Faculty of Sustainable Design Academic Assembly University of Toyama Toyama Toyama-shi Japan CHUETSU METAL WORKS CO LTD.. Nakaniikawa-gun Toyama Japan Saitama Industrial Technology Center Kawaguchi-shi Saitama Japan Department of Mechanical Systems Engineering Faculty of Engineering Toyama Prefectural University Toyama Imizu-shi Japan

With the recent digitization, electronic equipment housings are required to be thin-walled and have rigidity, heat dissipation, corrosion resistance, and electromagnetic shielding properties. Magnesium alloys are promising materials that satisfy these requirements. Mg-Al alloys have good castability and high strength, but their thermal conductivity decreases. In general, adding alloying elements to magnesium decreases thermal conductivity the effect of aluminum addition is significant. It was found that adding calcium to Mg-Al alloys to form Mg-Al-Ca (AX) alloys results in higher thermal conductivity than that of Mg-Al alloys. However, AX alloys have poor corrosion resistance and require post-treatment such as surface treatment. In this study, AX64, which has high thermal conductivity among the AX series alloys, was used as the basic composition, and corrosion resistance was improved by adding manganese and misch metal, and an attempt was made to improve corrosion resistance and emissivity through surface treatment. The change in thermal conductivity by heat treatment was also investigated. Experimental results showed that the addition of manganese and misch metal improved corrosion resistance and thermal conductivity. Plasma anodization also improved corrosion resistance and emissivity. Heat treatment of these alloys at 400°C improved the thermal conductivity with longer holding time. © 2023 The Japan Institute of Light Metals.

关键词： Corrosion resistance

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