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N‑doped carbon anchored CoS_(2)/MoS_(2) nanosheets as efficient electrocatalysts for overall water splitting

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Frontiers of Optoelectronics 2022年第3期15卷 15-23页

作者： Xingwei Zhou Wei zhang Zunhao zhang Zizhun Wang Xu Zou dabing Li Weitao Zheng Key Laboratory of Automobile Materials MOE School of Materials Science and EngineeringElectron Microscopy Centerand International Center of Future ScienceJilin Provincial International Cooperation Key Laboratory of High-Efficiency Clean Energy MaterialsJilin UniversityChangchun 130012China Wuhan National Laboratory for Optoelectronics Huazhong University of Science and TechnologyWuhan 430074China State Key Laboratory of Luminescence and Applications Changchun Institute of OpticsFine Mechanics and PhysicsChinese Academy of SciencesChangchun 130033China

The oriented two-dimensional porous nitrogen-doped carbon embedded with CoS_(2) and MoS2 nanosheets is a highly efcient bifunctional *** hierarchical structure ensures fast mass transfer capacity in improving the electrocatalytic *** the greatly increased specifc surface area is benefcial to expose more electrocatalytically active *** oxygen evolution reaction(OER)and hydrogen evolution reaction(HER)tests in 1 mol/L KOH solution,only 194 and 140 mV overpotential are required to achieve a current density of 10 mA/cm^(2),*** research provides an efective strategy for synergizing the individual components in nanostructures for a wide range of electrocatalytic reactions.

关键词： Oxygen evolution reaction Hydrogen evolution reaction Bifunctional electrocatalyst Overall water splitting

杂交粳稻亲本随机扩增多态性DNA(RAPD)分析(研究简报)

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上海农业学报 2001年第2期17卷 33-36页

作者：梁婉琪黄亚红潘爱虎曾令珂张大兵袁勤全立勇曹黎明倪林娟上海市农业科学院农业生物技术研究中心上海市农业遗传育种重点实验室上海201106 南京大学生命科学院生物科学与技术系南京210093 上海市农业科学院作物育种栽培研究所上海201106

选用 6 0个随机引物对 15份杂交粳稻亲本材料进行了RAPD分析 ,其中 10种引物的扩增结果具有明显的多态性。在这 15份杂交粳稻亲本材料中共扩增得到 153条条带 ,其中的86条为多态性条带。聚类分析结果表明 ,所有供试材料可以被明确区分... 详细信息

选用 6 0个随机引物对 15份杂交粳稻亲本材料进行了RAPD分析 ,其中 10种引物的扩增结果具有明显的多态性。在这 15份杂交粳稻亲本材料中共扩增得到 153条条带 ,其中的86条为多态性条带。聚类分析结果表明 ,所有供试材料可以被明确区分。在此基础上分析了这15个水稻品种的亲缘关系 ,对田间育种有一定的参考价值。

关键词：杂交粳稻 RAPD分析亲本选育

Efficient ORR catalysts for zinc-air battery: Biomass-derived ultra-stable Co nanoparticles wrapped with graphitic layers via optimizing electron transfer

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Journal of Energy Chemistry 2022年第7期31卷 211-218,I0006页

作者： Yu Feng Kexin Song Wei zhang Xinyan Zhou Seung Jo Yoo Jin-Gyu Kim Sifan Qiao Yugang Qi Xu Zou Zhongjun Chen Tingting Qin Nailin Yue Zizhun Wang dabing Li Weitao Zheng State Key Laboratory of Automotive Simulation and Control School of Materials Science&EngineeringKey Laboratory of Automobile Materials MOEElectron Microscopy Centerand International Center of Future ScienceJilin UniversityJilin UniversityChangchun 130012JilinChina Division of Scientific Instrumentation&Management Korea Basic Science InstituteDaejeon 34133Republic of Korea Institute of High Energy Physics Chinese Academy of SciencesBeijing 100049China State Key Laboratory of Luminescence and Applications Changchun Institute of OpticsFine Mechanics and PhysicsChinese Academy of SciencesChangchun 130033JilinChina

The poor stability of non-noble metal catalysts in oxygen reduction reaction(ORR) is a main bottleneck that limits their big-scale application in metal-air batteries. Herein, we construct a chainmail catalyst(Co-NC-AD) with outstanding stability, via the competitive complexation and post absorption strategy,consisting of highly graphitic layers wrapped uniform-size Co nanoparticles(Co-NPs). Experiments combined with density functional theory(DFT) calculations jointly confirmed that the electron transfer occurred from the inner Co-NPs to the external graphitic layers. It facilitated the adsorption process of oxygen molecules and the hybridization of the O-2 p and C-1 p orbitals, which accelerated the ORR reaction kinetics. Consequently, our prepared Co-NC-AD shows excellent ORR activity, offered with a more positive initial potential(E_(onset)= 0.95 V) and half-wave potential(E_(1/2)= 0.86 V). The remarkable stability and resistance of methanol poisoning are merited from the protection effect of stable graphitic layers. In addition, the high electrochemical performance of Co-NC-AD-based zinc-air battery demonstrates their potential for practical applications. Therefore, our work provides new ideas for the design of nanoconfined catalysts with high stability and activity.

关键词： Chainmail catalyst Graphitic layers Co nanoparticles Oxygen reduction reaction

Raw Ginger Composite Antioxidant with High Efficiency to Extract Vitamin C from Strawberry

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Advances in Chemical Engineering and Science 2013年第3期3卷 185-188页

作者： Yanhu Guo Yumin zhang dabing Luo Tao Ma State Key Lab of Advanced Technology for Materials’ Synthesis and Processing Wuhan University of Technology Wuhan China

Raw ginger was introduced to a series of composite antioxidants. The specimens performed better efficiency than ordinary antioxidants while extracting vitamin C from strawberry. The results suggested that, by employing raw ginger composite antioxidant, the reservation of vitamin C could be 91.63% in washing process and 76.68% in squeezing process respectively. Furthermore, in squeezing process, the reservation of vitamin C reached 84.78% while the concentrate of raw ginger antioxidant was 0.03%. The both deposits performed perfect synergy effectively. Raw ginger composite antioxidant could be the well agent to extract vitamin C from fruit.

关键词： Raw Ginger Composite Antioxidant Synergy Effective Strawberry Vitamin C

Multiple-quantum-well-induced unipolar carrier transport multiplication in AlGaN solar-blind ultraviolet photodiode

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Photonics Research 2021年第10期9卷 1907-1915页

作者： LONG GUO KE JIANG XIAOJUAN SUN ZIHUI zhang JIANWEI BEN YUPING JIA YONG WANG dabing LI State Key Laboratory of Luminescence and Applications Changchun Institute of OpticsFine Mechanics and PhysicsChinese Academy of SciencesChangchun 130033China Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of SciencesBeijing 100049China Key Laboratory of Electronic Materials and Devices of Tianjin School of Electronics and Information EngineeringHebei University of TechnologyTianjin 300401China

AlGaN solar-blind ultraviolet(SBUV)detectors have potential application in fire monitoring,corona discharge monitoring,or biological *** the promotion of application requirements,there is an urgent demand for developing a high-performance vertical detector that can work at low bias or even zero *** this work,we have introduced a photoconductive gain mechanism into a vertical AlGaN SBUV detector and successfully realized it in a p-i-n photodiode via inserting a multiple-quantum-well(MQW)into the depletion *** MQW plays the role of trapping holes and increasing carrier lifetime due to its strong hole confinement effect and quantum confinement Stark ***,the electrons can go through the detector multiple times,inducing unipolar carrier transport ***,an AlGaN SBUV detector with a zero-bias peak responsivity of about 0.425 A/W at 233 nm is achieved,corresponding to an external quantum efficiency of 226%,indicating the existence of internal current *** compared with the device without MQW structure,the gain is estimated to be about 103 in *** investigation provides an alternative and effective approach to obtain high current gain in vertical AlGaN SBUV detectors at zero bias.

关键词： AlGaN quantum ultraviolet

Polarization assisted self-powered GaN-based UV photodetector with high responsivity

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Photonics Research 2021年第5期9卷 734-740页

作者： JIAXING WANG CHUNSHUANG CHU KANGKAI TIAN JIAMANG CHE HUA SHAO YONGHUI zhang KE JIANG ZI-HUI zhang XIAOJUAN SUN dabing LI State Key Laboratory of Reliability and Intelligence of Electrical Equipment Hebei University of TechnologyTianjin 300401China Key Laboratory of Electronic Materials and Devices of Tianjin School of Electronics and Information EngineeringHebei University of TechnologyTianjin 300401China State Key Laboratory of Luminescence and Applications Changchun Institute of OpticsFine Mechanics and PhysicsChinese Academy of SciencesChangchun 130033China

In this work, a self-powered GaN-based metal-semiconductor-metal photodetector(MSM PD) with high responsivity has been proposed and fabricated. The proposed MSM PD forms an asymmetric feature by using the polarization effect under one electrode, such that we adopt an AlGaN/GaN heterojunction to produce the electric field,and by doing so, an asymmetric energy band between the two electrodes can be obtained even when the device is unbiased. The asymmetric feature is proven by generating the asymmetric current-voltage characteristics both in the dark and the illumination conditions. Our results show that the asymmetric energy band enables the selfpowered PD, and the peak responsivity wavelength is 240 nm with the responsivity of 0.005 A/W. Moreover, a high responsivity of 13.56 A/W at the applied bias of 3 V is also achieved. Thanks to the very strong electric field in the charge transport region, when compared to the symmetric MSM PD, the proposed MSM PD can reach an increased photocurrent of 100 times larger than that for the conventional PD, even if the illumination intensity for the light source becomes increased.

关键词： responsivity polarization heterojunction

Polarization-enhanced AlGaN solar-blind ultraviolet detectors

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Photonics Research 2020年第7期8卷 1243-1252页

作者： Ke Jiang Xiaojuan Sun Zi-Hui zhang Jianwei Ben Jiamang Che Zhiming Shi Yuping Jia Yang Chen Shanli zhang Wei Lv dabing Li State Key Laboratory of Luminescence and Applications Changchun Institute of OpticsFine Mechanics and PhysicsChinese Academy of SciencesChangchun 130033China Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of SciencesBeijing 100049China Key Laboratory of Electronic Materials and Devices of Tianjin School of Electronics and Information EngineeringHebei University of TechnologyTianjin 300401China Key Laboratory of Advanced Structural Materials Ministry of EducationChangchun University of TechnologyChangchun 130012China College of Materials Science and Engineering Shenzhen UniversityShenzhen 518071China

AlGaN solar-blind ultraviolet detectors have great potential in many fields,although their performance has not fully meet the requirements until ***,we proposed an approach to utilize the inherent polarization effect of AlGaN to improve the detector *** heterostructures were designed to enhance the polarization field in the absorption layer,and a high built-in field and a high electron mobility conduction channel were *** a result,a high-performance solar-blind ultraviolet detector with a peak responsivity of 1.42 A/W at 10 V was achieved,being 50 times higher than that of the nonpolarization-enhanced ***,an electron reservoir structure was proposed to further improve the performance.A higher peak responsivity of 3.1 A/W at30 V was achieved because the electron reservoir structure could modulate the electron concentration in the conduction *** investigation presented here provided feasible approaches to improve the performance of the AlGaN detector by taking advantage of its inherent property.

关键词： polarization AlGaN ultraviolet

利用高效农杆菌遗传转化系统将ACP反义基因片段导入油菜

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上海农业学报 2003年第2期19卷 5-8页

作者：张承妹钱炳俊许斌贝黄亚红潘爱虎梁婉琪张大兵上海市农业科学院农业生物技术研究中心

通过对已有的油菜农杆菌遗传转化体系的改进 ,建立了一种利用农杆菌感染油菜子叶柄的高效遗传转化方法 ,经过农杆菌感染的子叶柄在含有 6 BA 2 .0mg/L ,IBA 0 .15mg/L ,AgNO33 .5mg/L的MS培养基上由卡那霉素抗性愈伤组织分化出抗性幼苗... 详细信息

通过对已有的油菜农杆菌遗传转化体系的改进 ,建立了一种利用农杆菌感染油菜子叶柄的高效遗传转化方法 ,经过农杆菌感染的子叶柄在含有 6 BA 2 .0mg/L ,IBA 0 .15mg/L ,AgNO33 .5mg/L的MS培养基上由卡那霉素抗性愈伤组织分化出抗性幼苗的频率达到 12 .2 8%。利用已经构建的含有油菜Napin启动子加上反义ACP脱饱和酶第一外显子、内含子的基因片段的植物双元表达载体 pNACP ,将该反义 ACP基因片段转入油菜“沪油 15” ;PCR和GUS染色结果表明抗性植株中有 60 %的植株含有导入的目的基因。

关键词：高效农杆菌遗传转化系统 ACP反义基因基因片段基因导入油菜

Carbon Starved Anther(CSA) Encoding a MYB Domain Protein Regulates Sugar Partitioning Required for Rice Pollen Development

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Carbon Starved Anther(CSA) Encoding a MYB Domain Protein Reg...