应动力工程多相流国家重点实验室国际可再生能源研究中心沈少华副教授邀请，美国加州大学Santa Cruz分校Jin Zhong Zhang教授于2014年6月16日来实验室参观访问，并于当日上午在“国际可再生能源中心”会议室为实验室师生做题为“Shed Light on Nanomaterials for Energy Conversion”的精彩学术报告。沈少华副教授主持报告。
纳米材料科学兴起不仅对于基础科学有极大促进作用而且还催生了一系列新兴技术。主要是由于纳米结构的量子限制效应以及极大表面积体积比等等新颖的理化性质而使其与他大块物质有不同的特性。特别是其新型光学、物理化学性质在太阳能转换、固态照明、传感和生物医学检测与治疗等方面的技术应用极具优越性。在过去二十年，Jin Zhong Zhang教授所在的实验室一直积极从事纳米材料的各种实际应用的基本光学和动力学性质的研究。基于改进光学和电子学特性复合半导体纳米结构光解水制氢，以及掺杂半导体量子点的固态照明应用（利用共掺策略加强发光）等方面均取得优异成绩；另外还设计表征了基于表面增强拉曼散射（SERS）的化学传感和生物医学治疗应用的金属纳米结构。设计了具有独特结构和光学特性的空心纳米黄金球，并且已被证实其在SERS检测以及体内外光热消融（PTA）治疗癌症方面表现出优秀的光物理性质。
在报告中zhang教授重点介绍了纳米结构材料在太阳能转换以及固态照明应用方面的系列研究。报告了前沿研究进展，呈现了鲜活研究实例。报告后与实验室师生就纳米结构可见光催化剂研究设计等等展开了热烈讨论。
专家介绍
Jin Zhong Zhang Biography, Education, and Training:
1983, B.S.in Chemistry, Fudan University, Shanghai, China
1989, Ph.D., University of Washington, Seattle
1992, Postdoctoral Fellows, UC Berkeley
Areas of Expertise:
Design, synthesis, characterization, and application of nanomaterials, including semiconductor and metal nanoparticles; femtosecond laser spectroscopy; ultrafast dynamics on surfaces and at interfaces; cancer biomarker detection; surface-enhanced Raman spectroscopy
Research Interests:
The Zhang research group is primarily interested in the design, development, characterization, and application of advanced materials with emphasis on optical and electronic nanomaterials (nanocrystals or quantom dots) of both semiconductors and metals. These nanomaterials have novel physical and chemical properties due to quantum confinement and exceedingly large surface to volume ratio. The design and synthesis of the materials are mostly based on inorganic colloidal chemistry methods. The synthesized materials are characterized systematically and extensively using a variety of experimental techniques including SERS (surface-enhanced Raman scattering), optical spectroscopy, ultrafast laser, x-ray (XAFS, XPS), ESR, electrochemical, and microscopy. In the meantime, the group actively explores emerging technological applications of these advanced nanomaterials in areas such as solar energy conversion, hydrogen generation and storage, cancer biomarker detection, photocatalysis, sensors, imaging, detectors, and lasers. A number of projects have been accomplished and several are currently under investigation. Some examples of on-going projects include:
1. Surface-enhanced Raman scattering (SERS) based on Au and Ag nanoparticles/aggregates and development of SERS sensors for chemical and biomedical detection with emphasis on cancer biomarkers including antigens and antibodies of ovarian and lung cancers.
2. Ultrafast interfacial electron dynamics and surface modification of semiconductor nanoparticles: CdS, CdSe, CdTe, PbS, Ag2S, CuS. Biocnjugation of semiconductor quantum dots to proteins for biomedical cancer detection based on photoluminescence
3. Hydrogen generation and storage based on novel semiconductor, oxide, and metal nanostructures including nanowires and nanorods via photoelectrochemistry or photocatalysis.
4. Photoluminescence and up-conversion luminescence of doped semiconductor nanoparticles: Mn2+ and Cu+ doped ZnS, ZnSe, CdS nanoparticles
5. Solar energy conversion based on dye, polymer, or quantum dot sensitized nanocrystalline TiO2, WO3, or ZnO solar cells, in conjunction with N-doping, using conjugated polymers as solid electrolytes
6. Hot electron relaxation in metal nanoparticles and nanoparticle aggregates: Ag, Au, Pd, and Pt
7.Photothermal imaging and ablation therapy of cancer cells using hollow gold nanoshells (HGNs)
Teaching Interests:
General Chemistry, Physical Chemistry and Lab, Graduate Quantum Chemistry, Graduate Spectroscopy
Awards, Honors, and Grants:
2011 Elected Fellows of the Amverican Chemical Society
2009 Elected Fellow of the American Physical Society
2009-present, Adjunct Professor of Beijing Institute of Science and Technology
2009-present, Adjunct Professor of Nanyang University of Science and Technology, Nanyang, Henan, China
2007 Elected Fellow of the American Association for the Advancement of Science (AAAS)
2008-present, Adjunct Professor of Nanjing University, Nanjing, China.
2006-present, Guest Professor, Northeast Normal University, Changchun, China
2007-2009, Overseas Young Investigator Award, NSF of China, Sponsored by Tsinghua University, Beijing, China
2005-2007, Senior Visiting Scholar, Fudan University, Shanghai, China
2006-present, Member of AAAS
1991-present, Member of the American Chemical Society
1988-present, Member of the American Physical Society
1984-85, Doering Chemistry Graduate Program (CGP) Fellowship, University of Washington, Seattle
1983, Recipient of CGP Award by the Chinese Education Commission
1983, Outstanding Student Award, Fudan University, China
Selected Publications:
Gongming Wang, Yichuan Ling, Hanyu Wang, Xunyu Yang, Changchun Wang, Jin Z. Zhang, and Yat Li "Substoichiometric WO3-x (x<0.1) Nanoplates Show Enhanced Stability and Photoactivity for Water Oxidation", Eneergy Env. Science, in press 2012.
Sheraz Gul, J. K. Cooper, C. Corrado, Brian Vollbrecht, F. Bridges, Jinghua Guo, and J. Z. Zhang, "Synthesis, optical properties, and exciton relaxation dynamics of stable Cu-doped ZnSe nanocrystals", J. Phys. Chem. C, 115, 20864-20875, 2011.
GongColeman X. Kronawitter, Jonathan R. Bakke, Damon Wheeler, Wei-Cheng Wang, Chinglin Chang, Bonnie R. Antoun, Jin Z. Zhang, Jinghua Guo, Stacey F. Bent, Samuel S. Mao, Lionel Vayssieres, "Electron enrichment in 3d transition metal oxide heteronanostructuress" Nano Letters, 11, 3855-3861, 2011.
George K. Larsen, Robert Fitzmorris, Jin Z. Zhang, and Yiping Zhao, "Structural, optical, and photocatalytic properties of Cr:TiO2 nanorod array fabricated by oblique angle co-deposition", J. Phys. Chem. C, 115, 16892-16903, 2011..
Gongming Wang, Yichuan Ling, Damon A. Wheeler, Kyle E. N. George, Kim Horsley, Clemens Heske, Jin Z. Zhang, Yat Li, "Facile synthesis of highly photoactive alpha-Fe2O3-based films for water oxidation", Nano Letters, 11, 3503-3509, 2011.
Jason K. Cooper, Alexandra M. Franco, Sheraz Gul, Carley Corrado, Jin Z. Zhang, "Characterization of Primary Amine Capped CdSe, ZnSe, and ZnS Quantum Dots by FT-IR: Determination of Surface Bonding Interaction and Identification of Selective Desorption", Langmuir, 27, 8486-8493, 2011.
Wilson Smith, Abe Wolcott, R. FitzmGongming Wang, Hanyu Wang, Yichuan Ling, Chaoyue Tang, Xunyu Yang, Robert K. Fitzmorris, Changchun Wang, Jin Z. Zhang, and Yat Li, "Hydrogen-treated TiO2 nanowire arrays for photoelectrochemical water splitting", Nano Letters, 11, 3026-3033, 2011.
Carley Corrado, Jason Cooper, Morgan Hawker, Jennifer Hensel, Grant Livingston, Sheraz, Brian Vollbrecht, Franl Bridges, and Jin Z. Zhang, "Synthesis and Characterization of Organically Soluble Cu-doped ZnS Nanocrystals with Br Co-activator", J. Phys. Chem. C, 115, 14559-14570, 2011.
Xuan Yang, Claire Gu, Fang Qian, Yat Li, and Jin Z. Zhang, "Highly Sensitive Detection of Proteins and Bacteria in Aqueous Solution Using Surface-Enhanced Raman Scattering and Optical Fibers" Analytical Chemistry, 83, 5888-5894, 2011.
Li Yuan, Qianqian Tang, Dong Yang, Jin Zhong Zhang, Fayong Zhang, and Jianhua Hu, "Preparation of pH-Responsive Mesoporous Silica Nanoparticles and Their Application in Controlled Drug Delivery", J. Phys. Chem. 115, 9926-9982, 2011.
Y. Ling, G. Wang, D. Wheeler, J. Z. Zhang, and Y. Li, "Sn-doped hematite nanostructures for photoelectrochemical water splitting", Nano Letters, 11(5), 2119-2125, 2011.
Jin Z. Zhang, "Challenges and opportunities in light and electricity energy conversion", J. Phys. Chem. Lett. (editorial), 2, 1351-1352, 2011.
