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Application of a novel porous tantalum implant in rabbit anterior lumbar spine fusion model:in vitro and in vivo experiments

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Chinese Medical Journal 2019年第1期132卷 51-62页

作者： Ming Lu Song Xu Zi-Xiong Lei Dong LU Wei Cao Marko Huttula Chang-He Hou Shao-Hua Du Wei Chen Shuang-Wu Dai Hao-Miao Li Da-Di Jin Department of Orthopedic The Third Affiliated Hospital of Southern Medical UniversityGuangzhouGuangdong 510630China Academy of Orthopaedics of guangdong Province GuangzhouGuangdong 510630China Department of Arthroplasty Nanfang HospitalSouthern Medical UniversityGuangzhouGuangdong 510515China Ning Xia Orient Tantalum Industry co.Ltd ShizuishanNingxia 753000China Department of Physics University of OuluOulu FIN-90014Finland

Background Some porous materials have been developed to enhance biologic fusion of the implants to bone in spine fusion ***,there are several inherent *** this study,a novel biomedical porous tantalum was applied to in vitro and in vivo experiments to test its bioco.patibility and *** Bone marrow-derived mesenchymal stem cells (BMSCs) were cultured on porous tantalum *** electron microsco.e (SEM) and Cell co.nting Kit-8 assay were used to evaluate the cell toxicity and ***-four rabbits were performed discectomy only (co.trol group),discectomy with autologous bone implanted (autograft group),and discectomy with porous tantalum implanted (tantalum group) at 3 levels:L3–L4,L4–L5,and L5–L6 in random *** the 24 rabbits were randomly sacrificed at the different post-operative times (2,4,6,and 12 months;n = 6 at each time point).Histologic examination and micro-co.puted tomography scans were done to evaluate the fusion *** of fusion index sco.es between groups was analyzed using one-way analysis of *** co.parisons of numerical variables between groups were made by Student t *** All rabbits survived and reco.ered without any symptoms of nerve *** fusion index sco.es at 12 months post-operatively between autograft and tantalum groups showed no significant difference (2.89 ± 0.32 vs.2.83 ± 0.38, F= 244.60, P = 0.709).Cell co.nting Kit-8 assay showed no significant difference of absorbance values between the leaching liquor group and co.trol group (1.25 ± 0.06 vs.1.23 ± 0.04, t = –0.644, P = 0.545),which indicated the BMSC proliferation without *** images showed that these cells had irregular shapes with long spindles adhered to the surface of tantalum *** implant degradation,wear debris,or osteolysis was *** results showed solid fusion in the porous tantalum and autologous bone implanted intervertebral spaces

关键词： Porous tantalum anterior lumbar interbody fusion bone ingrowth chemical vapor deposition three-dimensional knitted framework

Self-standing hollow porous co.a-WO_(x)nanowire with maximum Mott-Schottky effect for boosting alkaline hydrogen evolution reaction

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Nano Research 2023年第4期16卷 4603-4611页

作者： Jianpo Chen Jianping Zheng Weidong He Haikuan Liang Yan Li Hao Cui Chengxin Wang School of Materials Science and Engineering The Key Laboratory of Low-Carbon Chemistry&Energy Conservation of Guangdong ProvinceSun Yatsen UniversityGuangzhou 510275China

The sufficient utilization of Mott-Schottky effect for boosting alkaline hydrogen evolution reaction(HER)depends upon scale minimizing of interface co.ponents and exposure maximizing of Mott-Schottky ***,a self-standing porous tubular Mott-Schottky electrocatalyst is co.structed by a self-template etching strategy,where amorphous WO_(x)(a-WO_(x))nano-matrix co.nects co.*** novel“Janus”electrocatalyst maximizes the Mott-Schottky effect by not only providing a highly exposed micro interface,but also simultaneously accelerating the water dissociation and optimizing the hydrogen desorption *** findings and theoretical calculations reveal that co.a-WO_(x)Mott-Schottky heterointerface triggers the electron redistribution and a build-in electric field,which can not only optimize the adsorption energy of the reaction intermediates,but also facilitate the charge ***,co.a-WO_(x)requires an overpotential of only 36.3 mV at 10 mA·cm^(−2)and shows a small Tafel slope of 53.9 mV·dec^(−1)as well as an excellent 200-h long-term *** work provides a novel design strategy for maximizing the Mott-Schottky effect on promoting alkaline HER.

关键词： Mott-Schottky effect electrocatalyst self-template etching hydrogen evolution reaction(HER) electron redistribution

Facile fabrication of durable superhydrophobic fabrics by silico. polyurethane membrane for oil/water separation

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Chinese Journal of Chemical Engineering 2023年第3期55卷 73-83页

作者： Taoyan Mao Runhui Xiao Peng Liu Jiale Chen Junqiang Luo Su Luo Fengwei Xie Cheng Zheng School of Chemistry and Chemical Engineering Guangzhou UniversityGuangzhou 510006China guangdong Debao Environmental Technology Research co.Ltd Guangzhou 510300China School of Engineering Newcastle UniversityNewcastle upon Tyne NE17RUUnited Kingdom Guangzhou Vocational co.lege of Science and Technology Guangzhou 510550China

Nowadays, oil co.tamination has beco.e a major reason for water pollution, and presents a global environmental challenge. Although many efforts have been devoted to the fabrication of oil/water separation materials, their practical applications are still hindered by their weak durability, poor chemical tolerance,environmental resistance, and potential negative impact on health and the environment. To overco.e these drawbacks, this work offers a facile method to fabricate the eco.friendly and durable oil/water separation membrane fabrics by alkaline hydrolysis and silico. polyurethane co.ting. The X-ray photoelectron spectrosco.y, scanning electron microsco.y, and atomic force microsco.y results demonstrate that silico. polyurethane membrane co.ld be co.ted onto the surface of hydrolyzed polyester fabric and form a micro-/nano-scaled hierarchical structure. Based on this, the modified fabric co.ld have a stable superhydrophobic property with a water co.tact angle higher than 150°, even after repeated washing and mechanical abrasion 800 times, as well as chemical co.rosion. Moreover, the modified fabrics show excellent oil/water separation efficiency of up to 99% for various types of oil–water mixture. Therefore, this durable, eco.friendly and co.t-efficient superhydrophobic fabric has great potential in large-scale oil/water separation.

关键词： Superhydrophobic fabrics Silico. polyurethane membrane Durability Separation Polymers Waster water

Defect Engineering of Disordered Carbon Anodes with Ultra-High Heteroatom Doping Through a Supermolecule-Mediated Strategy for Potassium-Ion Hybrid Capacitors

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Nano-micro Letters 2023年第3期15卷 248-265页

作者： Lei Zhao Shirong Sun Jinxin Lin Lei Zhong Liheng Chen Jing Guo Jian Yin Husam N.Alshareef Xueqing Qiu Wenli Zhang guangdong Provincial Key Laboratory of Plant Resources Biorefinery School of Chemical Engineering and Light IndustryGuangdong University of Technology(GDUT)100 Waihuan Xi RoadPanyu DistrictGuangzhou 510006People’s Republic of China Jieyang Branch of Chemistry and Chemical Engineering guangdong Laboratory(Rongjiang Laboratory) Jieyang 515200People’s Republic of China Key Laboratory of Dielectric and Electrolyte Functional Material Hebei Province School of Resources and MaterialsNortheastern University at QinhuangdaoQinhuangdao 066004People’s Republic of China Materials Science and Engineering Physical Science and Engineering DivisionKing Abdullah University of Science and Technology(KAUST)Thuwal 23955‑6900Saudi Arabia School of Advanced Manufacturing Research Institute of Green Chemical Engineering and Advanced MaterialsGuangdong University of Technology(GDUT)JieyangJieyang 515200People’s Republic of China

Amorphous carbons are promising anodes for high-rate potassium-ion *** low-temperature annealed amorphous carbons display unsatisfactory ***-induced defect engineering of amorphous carbons co.ld enhance their reversible ***,most lignocellulose biomasses lack heteroatoms,making it a challenge to design highly heteroatom-doped carbons(>10 at%).Herein,we report a new preparation strategy for amorphous carbon ***/sulfur co.doped lignin-derived porous carbons(NSLPC)with ultra-high nitrogen doping levels(21.6 at%of N and 0.8 at%of S)from renewable lignin biomacromolecule precursors were prepared through a supramolecule-mediated pyrolysis *** supermolecule/lignin co.posite deco.poses forming a co.alently bonded graphitic carbon/amorphous carbon intermediate product,which induces the formation of high heteroatom doping in the obtained *** unique pyrolysis chemistry and high heteroatom doping of NSLPC enable abundant defective active sites for the adsorption of K+and improved *** NSLPC anode delivered a high reversible capacity of 419 mAh g^(-1)and superior cycling stability(capacity retention of 96.6%at 1 A g^(-1)for 1000 cycles).Potassiumion hybrid capacitors assembled by NSLPC anode exhibited excellent cycling stability(91%capacity retention for 2000 cycles)and a high energy density of 71 Wh kg^(-1)at a power density of 92 W kg^(-1).

关键词： Defect Heteroatom Active sites Supramolecule Potassium-ion hybrid capacitors

Recent Progress,Challenges,and Prospects in Two‑Dimensional Photo‑Catalyst Materials and Environmental Remediation

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Nano-micro Letters 2020年第12期12卷 29-105页

作者： Karim Khan Ayesha Khan Tareen Muhammad Aslam Rizwan Ur Rehman Sagar Bin Zhang Weichun Huang Asif Mahmood Nasir Mahmood Kishwar Khan Han Zhang Zhongyi Guo School of Electrical Engineering and Intelligentization Dongguan University of Technology(DGUT)Dongguan 523808GuangdongPeople’s Republic of China Institute of microscale Optoelectronics Collaborative Innovation Centre for Optoelectronic Science and TechnologyKey Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong ProvinceCollege of Physics and Optoelectronic EngineeringShenzhen Key Laboratory of Micro‑Nano Photonic Information TechnologyGuangdong Laboratory of Artificial Intelligence and Digital Economy(SZ)Shenzhen UniversityShenzhen 518060People’s Republic of China co.lege of Materials Science and Engineering Shenzhen UniversityShenzhen 518060People’s Republic of China Government Degree co.lege Paharpur Gomel UniversityDera Ismail KhanK.P.KIslamic Republic of Pakistan School of Materials Science and Engineering Jiangxi University of Science and TechnologyJiangxi 341000People’s Republic of China School of Chemical and Bio‑Molecular Engineering The University of SydneySydneyNSW 2006Australia School of Engineering The Royal Melbourne Institute of Technology(RMIT)UniversityMelbourneVICAustralia Research Laboratory of Electronics(RLE) Massachusetts Institute of Technology(MIT)CambridgeMAUSA

The successful photo-catalyst library gives significant information on feature that affects photo-catalytic performance and proposes new *** is co.siderably significant to form multi-functional photo-catalysts with flexible *** recently,two-dimensional materials(2DMs)gained much attention from researchers,due to their unique thickness-dependent uses,mainly for photo-catalytic,outstanding chemical and physical ***-catalytic water splitting and hydrogen(H2)evolution by plentiful co.pounds as electron(e−)donors is estimated to participate in co.structing clean method for solar *** photocatalysis received much research attention caused by their applications to tackle numerous energy and environmental *** broad review explains progress regarding 2DMs,significance in structure,and catalytic *** will discuss in detail current progresses of approaches for adjusting 2DMs-based photo-catalysts to assess their photo-activity including doping,hetero-structure scheme,and functional formation *** plans,e.g.,doping and sensitization of semico.ducting 2DMs,increasing electrical co.ductance,improving catalytic active sites,strengthening interface co.pling in semico.ductors(SCs)2DMs,forming nano-structures,building multi-junction nano-co.posites,increasing photo-stability of SCs,and using co.bined results of adapted approaches,are summed ***,to further improve 2DMs photo-catalyst properties,hetero-structure design-based 2DMs’photo-catalyst basic mechanism is also reviewed.

关键词： Two-dimensional materials Photo-catalysts H2O2/H2-production Pollutant degradation co. reduction

Self-healable, recyclable, ultrastretchable, and high-performanceNO_(2) sensors based on an organohydrogel for room and sub-zero temperature and wireless operation

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SmartMat 2023年第1期4卷 168-184页

作者： Qiongling Ding Zijing Zhou Hao Wang Zixuan Wu Kai Tao Bo-Ru Yang Xi Xie Jun Fu Jin Wu State Key Laboratory of Optoelectronic Materials and Technologies and the guangdong Province Key Laboratory of Display Material and Technology School of Electronics and Information TechnologySun Yat-sen UniversityGuangzhouChina Ministry of Education Key Laboratory of micro and Nano Systems for Aerospace Northwestern Polytechnical UniversityXi'anChina School of Materials Science and Engineering Sun Yat-sen UniversityGuangzhouChina

To date,development of high-performance,stretchable gas sensors operating at and below room temperature(RT)remains a challenge in terms of traditional sensing ***,we report on a high-performance NO_(2) gas sensor based on a self-healable,recyclable,ultrastretchable,and stable polyvinyl alco.ol–cellulose nanofibril double-network organohydrogel,which features ultrahigh sensitivity(372%/ppm),low limit of detection(2.23 ppb),relatively fast response and reco.ery time(41/144 s for 250 ppb NO_(2)),good selectivity against interfering gases(NH3,co.(2),ethanol,and acetone),excellent reversibility,repeatability,and long-term stability at RT or even at−20°*** particular,this sensor shows outstanding stability against large deformations and mechanical damages so that it works normally after rapid self-healing or remolding after undergoing mechanical damage without significant performance degradation,which has major advantages co.pared to state-of-the-art gas *** high NO_(2) sensitivity and selectivity are attributed to the selective redox reactions at the threephase interface of gas,gel,and electrode,which is even boosted by applying tensile *** a specific electrical circuit design,a wireless NO_(2) alarm system based on this sensor is created to enable co.tinuous,real-time,and wireless NO_(2) detection to avoid the risk of exposure to NO_(2) higher than threshold co.centrations.

关键词： hydrogel NO_(2)gas sensor self-healing and recyclable organohydrogel stretchable and wearable electronics wireless gas sensor

Facile Self-templating Melting Route Preparation of Biomass-derived Hierarchical Porous Carbon for Advanced Supercapacitors

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Chemical Research in Chinese Universities 2018年第6期34卷 983-988页

作者： WANG Can WANG Dianyu ZHENG Shuang FANG Xueqing ZHANG Wenli TIAN Ye LIN Haibo LU Haiyan JIANG Lei co.lege of Chemistry Jilin University Changchun 130012 P. R. China University of Chinese Academy of Sciences Beijing 100049 P. R. China School of Materials Science and Engineering Tianjin University Tianjin 300350 P. R. China Technical Institute of Physics and Chemistry Chinese Academy of Sciences Beijing 100190 P. R. China guangdong Guanghua Sei-Tech co. Ltd. Shantou 515061 P R. China School of Chemistry Beihang Uiversity Beijing 100190 P. R. China

Biomass-derived porous carbons show great potential as electrode materials for supercapacitors due to the environmental friendliness. However, most of the carbonaceous electrode materials suffer from low specific capacitance and rate capacity because of the poor porosity. Here, we reported a simple and effective approach to prepare micro/nano-hierarchical structured carbon materials derived from rice husk by NaOH-KOH molten salt co.activation. The as-prepared activated carbons exhibit high porosity and suitable pore size distributions for more electrolyte ion adsorption, which are all beneficial for achieving remarkable electrochemical performances, such as high specific capacitance（194.6 F/g）, excellent rate capability（retention of 85.9%） and outstanding cycling stability. Thus, the above biomass-derived carbon materials with high porosity and micro/nano structures obtained by co.activation method offered a new insight into novel electrode material for the use in energy storage systems with high energy density and excellent rate performance.

关键词： Porosity co.Activation Electrode material Electrolyte Supercapacitor

Effect of rare earth Nd^(3+)doping co.tents on physical,structural,and magnetic properties of co.Ni spinel ferrite nanoparticles

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Journal of Rare Earths 2023年第11期41卷 1746-1753,I0004页

作者： Junjiao Li Muhammad Yousaf Qaisar Hayat Muhammad Akbar Asma Noor MAK Yousaf Shah Fenghua Qi Yuzheng Lu Department of Electronic and Engineering Nanjing Vocational Institute of Mechatronic TechnologyNanjing211306China Energy Storage Joint Research Centre School of Energy and EnvironmentSoutheast UniversityNanjing210096China Shenzhen Key Laboratory of Laser Engineering Guangdong Provincial Key Laboratory of Micro/Nano Optomechatronics EngineeringCollege of Physics and Optoelectronic EngineeringShenzhen UniversityShenzhen518060China Hubei co.laborative Innovation Centre for Advanced Organic Chemical Materials Faculty of Physics and Electronic ScienceHubei UniversityWuhan430062China co.lege of Electronic and Engineering Nanjing Xiaozhuang UniversityNanjing211171China

Rare earth(RE)low doping has a significant influence on the structural,morphological,and magnetic properties of spinel ferrite ***,rare earth neodymium(Nd)oxide was fully doped into spinel ferrite with a co.position of co.(0.80)Ni_(0.20)Nd_xFe_(2-x)O_4(x=0.0,0.05,0.10,and 0.15)using the sol-gel auto co.bustion *** analysis of the synthesized samples with low doping of Nd using X-ray diffraction(XRD)and Rietveld refinements reveals a pure single-phase cubic structure,while the seco.d phase appears with increasing co.tent of Nd^(3+)at x=0.10 and *** electron microsco.y(SEM)and high-resolution transmission electron microsco.y(HR-TEM)show well-shaped spherical grains within the nanometer range of the pure co.(0.80)Ni_(0.20)Fe_(2)O_(4) sample,while larger grains with the presence of agglomeration are observed with doping of Nd^(3+)into the spinel ferrite *** magnetic parameters,i.e.,saturation magnetization M_s,remanence and magnetic moments exhibit decreasing trend with Nd^(3+)doping and M_s values are in 65.69 to 53.34 emu/g *** co.rcivity of the Nd-doped co.Ni spinel ferrite sample was calculated to be 1037.76 to~827.24 *** work demonstrates remarkable improvements in the structural and magnetic characteristics of Nddoped co.Ni spinel ferrite nanoparticles for multiple versatile applications.

关键词： co.Ni spinel ferrites Rare earth Nd^(3+)doping Structural analysis Magnetic evaluations

Infrared light-emitting diodes based on co.loidal Pb Se/Pb S co.e/shell nanocrystals

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Chinese Physics B 2020年第1期29卷 482-488页

作者： Byung-Ryool Hyun Mikita Marus Huaying Zhong Depeng Li Haochen Liu Yue Xie Weon-kyu Koh Bing Xu Yanjun Liu Xiao Wei Sun guangdong University Key Laboratory for Advanced Quantum Dot Displays and Lighting Shenzhen Key Laboratory for Advanced Quantum Dot Displays and LightingDepartment of Electrical&Electronic EngineeringSouthern University of Science and TechnologyShenzhen 518055China School of Electrical and Electronic Engineering Nanyang Technological UniversitySingapore Shenzhen Planck Innovation Technologies co.Ltd Shenzhen 518112China

co.loidal Pb Se nanocrystals(NCs)have gained co.siderable attention due to their efficient carrier multiplication and emissions across near-infrared and short-wavelength infrared spectral ***,the fast degradation of co.loidal Pb Se NCs in ambient co.ditions hampers their widespread applications in infrared *** is well-known that the inorganic thick-shell over co.e improves the stability of ***,we present the synthesis of Pb Se/Pb S co.e/shell NCs showing wide spectral tunability,in which the molar ratio of lead(Pb)and sulfur(S)precursors,and the co.centration of sulfur and Pb Se NCs in solvent have a significant effect on the efficient Pb S shell *** infrared light-emitting diodes(IR-LEDs)fabricated with the Pb Se/Pb S co.e/shell NCs exhibit an external quantum efficiency(EQE)of 1.3%at 1280 *** ligand exchange to optimize the distance between NCs and chloride treatment are important processes for achieving high performance on Pb Se/Pb S *** results provide evidence for the promising potential of Pb Se/Pb S NCs over the wide range of infrared optoelectronic applications.

关键词： Pb Se/Pb S co.e/shell nanocrystal ligand exchange infrared light-emitting diodes external quantum efficiency