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| 1 | Carbon quantum dots for advanced electrocatalysis显示文摘Zero-dimensional(0D)carbon quantum dots(CQDs),as a nanocarbon material in the carbon family,have garnered increasing attention in recent years due to their outstanding features of low cost,nontoxicity,large surface area,high electrical conductivity,and rich surface functional groups.By virtue of their rapid electron transfer and large surface area,CQDs also emerge as promising functional materials for the applications in energy-conversion sectors through electrocatalysis.Besides,the rich functional groups on the surface of CQDs offer abundant anchoring sites and active sites for the engineering of multicomponent and high-performance composite materials.More importantly,the heteroatom in the CQDs could effectively tailor the charge distribution to promote the electron transfer via internal interactions,which is crucial to the enhancement of electrocatalytic performance.Herein,an overview about recent progress in preparing CQDs-based composites and employing them as promising electrode materials to promote the catalytic activity and stability for electrocatalysis is provided.The introduced CQDs could enhance the conductivity,modify the morphology and crystal phase,optimize the electronic structure,and provide more active centers and defect sites of composites.After establishing a deep understanding of the relationship between CQDs and electrocatalytic performances,the issues and challenges for the development of CQDs-based composites are discussed. | Lin Tian Zhao Li Peng Wang Xiuhui Zhai Xiang Wang Tongxiang Li | 2021 | Journal of Energy Chemistry2021,30,4: | 7 |
| 2 | Ceramics for high level radioactive waste solidification显示文摘Several countries reprocess their nuclear spent fuel using the Purex process to recover U and Pu as MOX fuel.The high level radioactive waste(HLW)produced during this reprocessing is a complex mixture containing both radioactive(fission products,minor actinides)and non-radioactive elements.Since HLW shows high rate heat release and contains some long half-life and biologically toxic radionuclide,its treatment and disposal technology is complex,difficult and high cost.HLW treatment and disposal become a worldwide challenge and research focus.In order to minimize the potential long-term impact of HLW,studies on enhanced chemical separation processes of long-lived radionuclides are in progress.Two options are then envisaged for these separated radionuclides:(a)transmutation into short-lived or non-radioactive elements,(b)immobilization in highly durable ceramic matrix instead of borosilicate glass.In this paper,we briefly review the composition,structure,processing and product properties of some ceramic candidates for inert matrix fuels(IMF)and the immobilization of high level radioactive waste. | Li WANG Tongxiang LIANG | 2012 | Journal of Advanced Ceramics2012,1,3: | 6 |
| 3 | Enhanced wetting and properties of carbon/carbon-Cu composites with Cr_3C_2 coatings by Cr-solution immersion method显示文摘A facile ammonium-dichromate solution immersion method was introduced to synthesize the copperwettable Cr_3C_2 coating on and inside the carbon-carbon(C/C) preform. The formation mechanism and the microstructures of the Cr_3C_2 coatings were studied. The contact angle between molten copper and the C/C decreased from 140? to 60?, demonstrating the significant improvement in the wettability. The Cr_3C_2-coated C/C-Cu composite with only 4.2% porosity and 3.69 g cm^(-3) density was manufactured through copper infiltration. As a result, the thermal and electrical conductivity of the modified C/C-Cu increased significantly due to the infiltrated copper. Also the mechanical properties of the composites including both the flexural and compressive strengths were enhanced by over 100%. The modified C/C-Cu composite exhibited lower friction coefficients and wear rates for different load levels than those of the commercial C/Cu composite. These results demonstrate the potential of the modified C/C-Cu material for use in electrical contacts. | Bo Kong Jinming Ru Hongdi Zhang Tongxiang Fan | 2018 | Journal of Materials Science & Technology2018,34,3: | 4 |
| 4 | Three-dimensional carbon framework as high-proportion sulfur host for high-performance lithium-sulfur batteries显示文摘Lithium-sulfur(Li-S)batteries are anticipated as one of the most promising candidates for the highenergy-density storage systems.However,the insulating nature and shuttling effect of sulfur severely limits their performance.The incorporation of sulfur with carbon materials has been deemed as one of the most powerful strategies to improve electrical conductivity and suppress soluble polysulfide shuttling.Herein,a novel three-dimensional carbon framework(3DCF)is prepared and employed as a sulfur host(3DCF@S)for Li-S batteries.The 3DCF not only supplies abundant paths for lithium ion diffusion and electron transport,but also strengthens polysulfide immobilization during the lithium/sulfur conversion reactions.As a result,the 3DCF@S with high sulfur content of 90%exhibits a high capacity of 1366 mA h/g at 0.1 C and excellent cycling stability with a satisfactory capacity of 601 mA h/g after 600 cycles at 2.0 C.The resultant Li-S button battery based 3DCF@S electrode could power a light-emitting diode for 2 h.The acquired 3DCF@S is expected to be widely used in Li-S batteries and this study will promote developments of carbon/sulfur composites for Li-S batteries. | Xianbin Liu Zechen Xiao Changgan Lai Shuai Zou Ming Zhang Kaixi Liu Yanhong Yin Tongxiang Liang Ziping Wu | 2020 | Journal of Materials Science & Technology2020,47,13: | 4 |
| 5 | Biodegradation of organochlorine pesticide endosulfan by bacterial strain Alcaligenes faecalis JBW4显示文摘The recently discovered endosulfan-degrading bacterial strain Alcaligenes faecalis JBW4 was isolated from activated sludge. This strain is able to use endosulfan as a carbon and energy source. The optimal conditions for the growth of strain JBW4 and for biodegradation by this strain were identified, and the metabolic products of endosulfan degradation were studied in detail. The maximum level of endosulfan biodegradation by strain JBW4 was obtained using broth at an initial pH of 7.0, an incubation temperature of 40°C and an endosulfan concentration of 100 mg/L. The concentration of endosulfan was determined by gas chromatography. Strain JBW4 was able to degrade 87.5% of α-endosulfan and 83.9% of β-endosulfan within 5 days. These degradation rates are much higher than the previously reported bacterial strains. Endosulfan diol and endosulfan lactone were the major metabolites detected by gas chromatography-mass spectrometry; endosulfan sulfate, which is a persistent and toxic metabolite, was not detected. These results suggested that A. faecalis JBW4 degrades endosulfan via a non-oxidative pathway. The biodegradation of endosulfan by A. faecalis is reported for the first time. Additionally, the present study indicates that strain JBW4 may have potential for the biodegradation of endosulfan residues. | Lingfen Kong Shaoyuan Zhu Lusheng Zhu Hui Xie Kunchang Su Tongxiang Yan Jun Wang Jinhua Wang Fenghua Wang Fengxia Sun | 2013 | Journal of Environmental Sciences2013,25,11: | 4 |
| 6 | EFFECT OF SILICON CARBIDE VOLUME FRACTION UPON INTERFACE REACTION IN SiC_p/Al COMPOSITES显示文摘1INTRODUCTIONDiscontinuouslyreinforcedmetalmatrixcompositesareveryatractiveinaerospaceandautomotiveindustryfortheirproperties... | Fan, Tongxiang Shi, Zhongliang Zhang, Di Wu, Renjie | 1999 | 中国有色金属学会会刊:英文版1999,9,2: | 2 |
| 7 | Electron theory analysis about the influence of Cr and Mn on the carbide spheroidization by heat treatment显示文摘It is found that the distribution of covalent electron pair number and covalent bond energy was nonuniform in carbides Fe 3C, (Fe,Cr) 3C and (Fe,Mn) 3C, in which the energy difference between the strongest and the weakest bonds is very great. A criterion of covalent bond breaking during the heat treatment of M 3C pattern carbide is presented as follows. If the heat energy \%E\-\%w from heat treatment is higher than the diffusion activation energy \%Q\% of carbon atom in γ_Fe, the less the covalent bond energy \%E\% α is, the earlier the covalent bond α will be broken. According to the criterion, why the breaking of (Fe,Mn) 3C network was easier than that of Fe 3C network and why the breaking of (Fe, Cr) 3C network was more difficult than that of Fe 3C network are explained. It is indicated that Mn promoted the carbide to be spheroidized and Cr hindered the carbide from spheroidization during the heat treatment of carbides spheroidization. | Yifu Ye Tongxiang Fan Yuxia Shang | 1998 | Chinese Science Bulletin1998,43,15: | 2 |
| 8 | Preparation of ZrO_2 nano-particles by the hydrolysis of ZrOCl_2 solution in the reverse micelles显示文摘Zirconia nano-particles have been produced by the hydrolysis of ZrOCl2 solution in the reverse micelles of a liquid-liquid two-phase system, in which sodium bis(2-ethylhexyl) sulfosuccinite (AOT) and toluene were chosen as the surfactant and organic phase, respectively. The reverse micelles prevented the aggregation of primary particles and reduced the diameters of zirconia nano-particles. Superfine zirconia powders soft-aggregated by the zirconia nano-particles were obtained. The diameters of zirconia nano-particles were influenced by the quantity of the surfactant. | Chensha Li Tongxiang Liang Tianyong Luo | 2006 | Journal of University of Science and Technology Beijing2006,13,4: | 2 |
| 9 | HPV16E7-HSP70 Hybrid DNA Vaccine Induces E7-Specific Cytotoxic T Cells and Antitumor Immunity显示文摘Using human papillomavirus type 16 (HPV16) E7 as an antigen and Heat Shock Protein 70 as adjuvant, we constructed a DNA vaccine by linking HSP70 gene to E7~ C91G gene. Mice, after being immunized with E7~ C91G -HSP70, E7~ C91G /HSP70, E7~ C91G , and wild E7 DNA vaccines respectively, produced E7 specific CD8^+ T-cell precursor frequencies of 280.33±2.52, 144.34±4.04, 164.34±5.13 and 82.33±3.51 respectively within every 1×10~5 mouse splenocytes. This proves that E7~ C91G -HSP70 fusion vaccine can significantly enhance the E7 specific cellular immunity within the mice body(p<0.01). After being immunized with E7~ C91G -HSP70 fusion vaccine, tumor-bearing mice of the group being treated have significantly longer latency and survival periods, comparing with other three categories of E7 vaccines. Experiment shows that this vaccine has a significant effect on enhancing E7 positive tumor-treatment within mice body. After being immunized with E7~ C91G -HSP70 vaccine, there were no pathological changes found in livers, kidneys and spleens of the mice, which proves that the vaccine is quite safe. After all, E7~ C91G -HSP70 fusion vaccine has a much stronger tumor- treatment effect than that of wild type E7 DNA vaccine. | ZHU Liqin LI Hui XIONG Jinhu WANG Tongxiang OU Xuan WEI Yun WU Xinxing | 2006 | Wuhan University Journal of Natural Sciences2006,11,3: | 2 |
| 10 | KOH-assisted aqueous synthesis of bimetallic metal-organic frameworks and their derived selenide composites for efficient lithium storage显示文摘To solve low efficiency,environmental pollution,and toxicity for synthesizing zeolitic imidazolate frameworks(ZIFs)in organic solvents,a KOH-assisted aqueous strategy is proposed to synthesize bimetallic ZIFs polyhedrons,which are used as precursors to prepare bimetallic selenide and N-doped carbon(NC)composites.Among them,Fe–Co–Se/NC retains the three-dimensional(3D)polyhedrons with mesoporous structure,and Fe–Co–Se nanoparticles are uniform in size and evenly distributed.When assessed as anode material for lithium-ion batteries,Fe–Co–Se/NC achieves an excellent initial specific capacity of 1165.9 m Ah·g^(-1)at 1.0 A·g^(-1),and the reversible capacity of Fe–Co–Se/NC anode is 1247.4 m Ah·g^(-1)after 550 cycles.It is attributed to that the uniform composite of bimetallic selenides and N-doped carbon can effectively tune redox active sites,the stable 3D structure of Fe–Co–Se/NCs guarantees the structural stability and wettability of the electrolyte,and the uniform distribution of Fe–Co–S nanoparticles in size esuppresses the volume expansion and accelerates the electrochemical reaction kinetics. | Shuya Zhang Yanchun Xue Yutang Zhang Chengxing Zhu Xingmei Guo Fu Cao Xiangjun Zheng Qinghong Kong Junhao Zhang Tongxiang Fan | 2023 | International Journal of Minerals,Metallurgy and Materials2023,30,4: | 2 |
| 11 | Preparation of ammonium diuranate particles by external gelation process of uranium in INET显示文摘 | Zhou Xiangwen Ma Jingtao Hao Shaochang Zhao Xingyu Wang Yang Deng Changsheng Liang Tongxiang Guo Wenli Tang Yaping Tang Chunhe | 2012 | Nuclear Engineering and Design2012,,: | 1 |
| 12 | Preparation of UOz kernel for HTR- 10 fuel element显示文摘 | FU Xiaoming LIANG Tongxiang TANG Ya- ping | 2004 | Journal of Nuclear and Tech- nology2004,47,9: | 1 |
| 13 | Enhanced efficiency of graphene/silicon heterojunction solar cells by molecular doping显示文摘 | Cui Tongxiang Lv Ruitao Huang Zhenghong | 2013 | J Mater Chem A2013,,1: | 1 |
| 14 | Synthesis and hie-rarchicalpore structure of biomorphiemanganese ox- ide derived fromwoods显示文摘 | LIXufan FAN Tongxiang LIU Zhaoting | 2006 | J Eur CeramSoe2006,26,16: | 1 |
| 15 | Investigation of microstructures of ZnCo_2O_4 on bare Ni foam and Ni foam coated with graphene and their supercapacitors performance显示文摘The graphene coating was deposited on the surface of Ni foam using the chemical vapor deposition process. A large amount of flower-like ZnCo_2O_4 microspheres with short nanowires were formed on bare Ni foam by hydrothermal method, while large-scale ZnCo_2O_4 nanowires arrays homogeneously aligned and separated adequately on Ni foam coated with graphene. This ZnCo_2O_4 nanowire structure exhibited superior supercapacitors properties. The excellent supercapacitors were mainly attributed to the large specific surface and the porosity on the nanowires which promoted the electrons and ions transportation. In addition, graphene improved conductivity of substrate for current collecting. | Jinlong Lv Tongxiang Liang Meng Yang Suzuki Ken Miura Hideo | 2017 | Journal of Energy Chemistry2017,26,3: | 1 |
| 16 | Biomorphic syn- thesis of SnO2 microtubules on cotton fibers显示文摘 | SUN Binhe FAN Tongxiang XU Jiaqiang | 2005 | Mater Lett2005,59,: | 1 |
| 17 | Synthesis and properties of copper conductive adhesives modified by SiO2 nanoparticles显示文摘 | Zhao Hongsheng Liang Tongxiang Liu Bing | 2007 | International Journal of Adhesion & Adhesives2007,27,: | 1 |
| 18 | Structure of SiCcoatings from polycarbosilane on graphite for fuel element matrix of high temperature gas-cooled reactor显示文摘 | Tang Chunhe Liang Tongxiang | 2006 | Surface and Coating Technology2006,200,: | 1 |
| 19 | Synthesis of nanocomposite nickel oxide/yttrium-stabilized zirconia(NiO/YSZ)powders for anodes of solid oxide fuel cells(SOFCs) via mcrowaveassisted complex-gel auto-combustion显示文摘 | Cai Tongxiang Zeng Yanwei Zhang Wei | | 0,,05: | 1 |
| 20 | Chemical reaction of SiCp/AI com- posites during multiple remelting 显示文摘 | Tongxiang Fan Di Zhang | 2003 | Applied Science and Man- ufacturing2003,,34: | 1 |