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Photocatalytic degradation of phenol in aqueous solution using TiO_2/Ti thin film photocatalyst

中国有色金属学会会刊：英文版 2003年第4期13卷 1008-1012页

作者：樊彩梅孙彦平闵延琴郝晓刚李新军李芳柏 Department of Chemical Engineering Guangzhou Institute of Energy Conversion Guangdong Key Laboratory of Agricultural Environment Pollution Integrated Control

In order to clarify the respective role of the UV light, catalyst, external bias as well as their combined effects on the photodegradation process and to clarify the photocatalytic mechanism under different experimental conditions, a series of experiments were conducted in a shallow pond photoreactor with an effective volume of 100 mL using TiO 2/Ti thin film prepared by anodization as photocatalyst. A 300W UV lamp( E max =365 nm)was used as side light source. The effect of light intensity on photocatalysis was also conducted. The results show that photocatalytic oxidation is an effective method for phenol removal from waters. The degradation rate can be improved by applying an anodic bias to the TiO 2/Ti film electrode, phenol can not be decomposed under only 365 nm UV light irradiation even in the presence of hydrogen peroxide. In the range of our research, the phenol removal rate can be described in terms of pseudo first order kinetics.

关键词：光催化剂废水处理光催化降解二氧化钛水溶液苯酚

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Adsorption and photocatalytic degradation of phenol over TiO_2/ACF

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中国有色金属学会会刊：英文版 2003年第2期13卷 452-456页

作者：樊彩梅闵延琴郝晓刚孙彦平李新军李芳柏 College of Chemical Engineering and Technology Taiyuan University of Technology Guangzhou Institute of Energy Conversion Chinese Academy of Sciences Guangdong Key Laboratory of Agricultural Environment Pollution Integrated Control Guangdong Institute of Eco Environment and Soil Sciences

The adsorption and photocatalytic degradation of phenol in water were investigated in a cylindrical borosilicon glass photoreactor with a cooling water jacket using TiO 2/ACF as photocatalyst. A 15 W UV lamp(254 nm) was used as central light source. The effects of the temperature and initial concentration of phenol solution on adsorption and photocatalytic process were studied, and the comparison of adsorption, photolysis and photocatalysis was conducted. The results show that the classical model of Langmuir gives a good description of the adsorption of phenol on TiO 2/ACF and low temperature can improve the adsorption of phenol on photocatalyst; increasing temperature can increase the photocatalytic degradation rate of phenol; and the adsorption enhances the photocatalytic removal of phenol.

关键词：吸附降解苯酚废水处理二氧化钛光催化

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Effect of Rare Earth on Superplasticity of Zn-5Al Eutectic Alloy

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Journal of Rare Earths 2002年第3期20卷 209-212页

作者：石志强叶以富李世春王焕荣滕新营 Key Laboratory of Liquid Structure and Heredity of Materials Ministry of Education Shandong University Jinan 250061 China College of Mechanical and Electrical Engineering University of Petroleum Shandong Dongying 257061 China College of Resource and Environment Engineering East China University of Science and Technology Shanghai 200237 China Key Laboratory of Liquid Structure and Heredity of Materials Ministry of Education Shandong University Jinan 250061 China College of Mechanical and Electrical Engineering University of Petroleum Shandong Dongying 257061 China Key Laboratory of Liquid Structure and Heredity of Materials Ministry of Education Shandong University Jinan 250061 China

The superplastic deformation curves of Zn 5Al eutectic alloy containing small amount of rare earth were measured, and the influence of rare earth on structure and superplasticity characteristics of the alloy was examined with optical microscope, XDF and TEM. The results show that the elongation of Zn 5Al eutectic alloy can be increased if less than 0.2 %(mass fraction) misch metal was added. Rare earth which exists in the form of compounds Al 2CeZn 2 and CeZn 3 can refrain the dissolution and diffusion of Zn to Al and postpone the saturation of the diffusion dissolution zone(DDZ) above 350 ℃, and in such a way boost up α/β interface sliding which benefits the superplasticity.

关键词： rare earths Zn Al alloy superplasticity

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Photoelectrocatalytic properties and reactivity of Ti/Au-TiO_2 mesh electrodes

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中国有色金属学会会刊：英文版 2002年第6期12卷 1180-1186页

作者：李芳柏李新军李湘中侯梅芳 Guangzhou Institute of Energy Conversion Chinese Academy of Sciences Guangdong Key Laboratory of Agricultural Environment Pollution Integrated Control Guangdong Institute of Eco Environment and Soil Science Guangzhou 510650 China Department of Civil and Structural Engineering Hong Kong Polytechnic University Guangdong Key Laboratory of Agricultural Environment Pollution Integrated Control Guangdong Institute of Eco Environment and Soil Science

A kind of photoelectrode was innovated by anodising titanium mesh in H 2SO 4 solution and photo reduced in HAuCl 4 solution and named Ti/Au TiO 2 mesh electrode. The structural and surface morphology of the Ti/Au TiO 2 mesh was examined by X ray diffraction, laser Raman spectra, scanning electronic microscopy(SEM) and X ray photoelectron spectroscopy respectively. The results indicate that its crystal structure, morphology and the size of pore are affected greatly by gold deposition. XPS measurement shows that the valence band of Ti/TiO 2 has two peaks: a wide one at 4.97 eV and a narrow one at 6.61 eV, which correspond mainly to π(nonbonding) and σ (bonding) O 2p orbitals. The emission intensity of O 2p orbitals becomes stronger and the width of the valence band increases with the increase of Au content. And the emission of nonbonding shifts toward lower binding energy and that of bonding O 2p orbitals shifts toward higher binding energy. The photoelectrocatalytic(PEC) oxidation of humic acid(HA) was investigated in terms of TOC. The PEC oxidation efficiency of Ti/Au TiO 2 mesh with optimal content of gold is higher than that of Ti/TiO 2 mesh. It is suggested that the recombination of electrons and holes is hindered owing to gold deposition. The investigation shows that PEC oxidation is a convenient way to mineralize organic matter for water treatment.

关键词：光电催化氧化水处理腐殖酸网格电极金钛 Ti/Au-TiO2

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Mechanism for phase boundary sliding and its relevance to diffusion-solution zone in SPD

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中国有色金属学会会刊：英文版 2002年第5期12卷 952-955页

作者：石志强叶以富李世春张磊 College of Mechanical and Electrical Engineering University of PetroleumHuadongDongying 257061 China；Key Laboratory of Liquid Structure and Heredity of Materials Ministry of EducationShandong University Ji′nan 250061 China Key Laboratory of Liquid Structure and Heredity of Materials Ministry of EducationShandong University Ji′nan 250061 ChinaCollege of Resource and Environment Engineering East China University of Science and Technology Shanghai 200237 China College of Mechanical and Electrical Engineering University of Petroleum(Huadong)Dongying 257061 China

The diffusion behavior of Zn/Al interfaces in their powders sintering was investigated with SEM. The results show that Zn-Al eutectoid microstructure can be achieved through their powders sintering, and the diffusion characteristic between Zn and Al is just a demonstration of Kirkendall effect, by which Zn can dissolve into Al and contrarily Al cannot dissolve into Zn. During sintering, a diffusion-solution zone α′ has formed and subsequently transforms into eutectoid microstructure in cooling process. The superplastic deformation mechanism of Zn-Al eutectic alloy is phase boundary sliding which is controlled by diffusion-solution zone α′. If diffusion-solution zone α′ is unsaturated, it will have much more crystal defects and the combination between α′ and β phase is weak, thus the process of phase boundary sliding becomes easily; on the contrary, if the diffusion-solution zone α′ becomes thick and saturated, the sliding will be difficult.

关键词：锌铝合金超塑性变形扩散溶解相界 SPD

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Phase boundary sliding model controlled by diffusion-solution zone in superplastic deformation

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Chinese Science Bulletin 2002年第14期47卷 1228-1232页

作者： SHI Zhiqiang YE Yifu LI Shichun TENG Xinying WANG Huanrong Key Laboratory of Liquid Structure and Heredity of Materials of Ministry of Education Shandong UniversityJinan 250061China College of Mechanical and Electrical Engineering University of PetroleumDongying 257061China College of Resource and Environment Engineering East China University of Science and TechnologyShanghai 200237China

With scanning electron microscope (SEM), the surface morphology of phase boundary sliding (PBS) in superplastic deformation (SPD) of Zn-Al alloy and the diffusion behavior of Zn, Al interfaces in their powers’ sintering have been investigated. The results show that Zn-Al eutec-toid microstructure can be achieved through their powders’ sintering, and the diffusion characteristic between Zn and Al is just a demonstration of Kirkendall effect, in which Zn can dissolve into Al whereas Al can hardly dissolve into Zn. During sintering, a diffusion-solution zone a’ has formed and subsequently transformed into a eutectoid microstructure in the cooling process. The superplastic deformation mechanism of Zn-Al eutectic alloy is phase boundary sliding which is controlled by the diffusion-solution zone α’. If the diffusion-solution zone α’ is unsaturated, it will have much more crystal defects and the combination between α’ and phase P is weak, thus the process of phase boundary sliding becomes easily; on the

关键词： Zn-Al alloy superplasticity phase boundary sliding (PBS) diffusion-solution zone (DSZ).

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Effect of surface state properties of modified TiO_2 powders on their photo-catalytic activity

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中国有色金属学会会刊：英文版 2002年第4期12卷 707-711页

作者：李芳柏李新军李湘中侯梅芳王良焱 Guangdong Key Laboratory of Agricultural Environment Pollution Integrated Co ntrol Guangdong Institute of Eco-Environment and Soil Science Guangzhou 510650 China；Guangzhou Institute of Energy Conversion The Chinese Academy of Sciences Guangzhou 5100 Guangzhou Institute of Energy Conversion The Chinese Academy of Sciences Guangzhou 510070 China Department of Civil and Structural Engineering Hong Kong Polytechnic UniversityKowloon Hong Kong China Guangdong Key Laboratory of Agricultural Environment Pollution Integrated Control Guangdong Institute of Eco-Environment and Soil Science Guangzhou 510650 China

With an attempt to investigate the effect of gold impurity and tungsten oxide on the recombination and separation of electron hole pairs, and disclose the effect of surface state on the photo catalytic activity of TiO 2, an innovative photo catalyst 3%WO 3/0.5%Au 3+ /TiO 2 was prepared by means of sol gel method. The photo oxidation efficiency of photo catalyst was evaluated by conducting a set of experiments to photo degrade methylene blue (MB) in aqueous solution. The surface state properties were examined by means of surface photovoltage spectra (SPS) and electron field induced SPS (EFISPS). The experiments demonstrate that the strongest peak is attributed to electron excited from valence band to conduction band and the second strongest peak is attributed to electron excited from valence band to oxygen molecular for all samples. Electron is trapped by O 2 absorbed on the surface of TiO 2. And the surface state of O - 2 forms. For (1%, 3%)Au 3+ /TiO 2 sample, two new peaks that significantly present at 414?nm and 400?nm respectively should be attributable to gold impurity energy level. And for tungsten oxides doping samples, 4 peaks that significantly present in the region of 500～800?nm should be attributable to tungsten impurity energy level. The intensity of EFISPS decreases with increasing the content of gold ion or tungsten oxide when its content is no more than their optimal dosage. However, when the content of gold ion or tungsten oxide is more than their optimal dosage, impurity energy level becomes recombination center from separation center and the intensity of all peaks increases for them.

关键词：二氧化钛粉末表面状态催化活性光催化

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Heat-induced secondary structural studies of human serum albumin in aqueous solutions by two-dimensional FT-IR spectroscopy

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AIP Conference Proceedings 2000年第1期503卷 279-282页

作者： Yuqing Wu Koichi Murayama Boguslawa Czarnik-Matusewicz Yukihiro Ozaki 1Key Laboratory of Supramolecular Structure and Spectroscopy Jilin University Changchun 130023 People’s Republic of China 2Department of Environment Information and Bioproduction Engineering Faculty of Agriculture Kobe University Rokkodai Nada-ku Kobe 657-8501 Japan 3Faculty of Chemistry University of Wroclaw F. Joliot-Curie 14 50-383 Wroclaw Poland 0School of Science Kwansei-Gakuin University Nishinomiya 662-8501 Japan

FT-IR spectra were measured for human serum albumin (HSA) in aqueous solutions with the concentration of 1.0, 2.0, 3.0, 4.0 and 5.0 wt% over a temperature range of 45 to 80 °C. The synchronous and asynchronous correlation spectra were calculated for the concentration dependent IR spectral variation in the amide I and amide II regions at various temperatures. These result suggest that the thermal unfolding procedure begins with some changes in α-helix structure, followed by the conversion from the α-helix to β-strands and then to β-turn and disordered structures. The final state at higher temperatures is dominated by the β-turns and disordered structures.

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Contributory presentations/posters

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Journal of Biosciences 1999年第1期24卷 33-198页

作者： N. Manoj V. R. Srinivas A. Surolia M. Vijayan K. Suguna R. Ravishankar R. Schwarzenbacher K. Zeth Diederichs G. M. Kostner A. Gries P. Laggner R. Prassl Madhusudan Pearl Akamine Nguyen-huu Xuong Susan S. Taylor M. Bidva Sagar K. Saikrishnan S. Roy K. Purnapatre P. Handa U. Varshney B. K. Biswal N. Sukumar J. K. Mohana Rao A. Johnson Vasantha Pattabhi S. Sri Krishna Mira Sastri H. S. Savithri M. R. N. Murthy Bindu Pillai Kannan M. V. Hosur Mukesh Kumar Swati Patwardhan K. K. Kannan B. Padmanabhaa S. Sasaki-Sugio M. Nukaga T. Matsuzaki S. Karthikevan S. Sharma A. K. Sharma M. Paramasivam P. Kumar J. A. Khan S. Yadav A. Srinivasan T. P. Singh S. Gourinath Neelima Alam A. Srintvasan Vikas Chandra Punit Kaur Ch. Betzel S. Ghosh A. K. Bera S. Bhattacharya S. Chakraborty A. K. Pal B. P. Mukhopadhyay I. Dey U. Haldar Asok Baneriee Jozef Sevcik Adriana Solovicova K. Sekar M. Sundaralingam N. Genov Dong-cai Liang Tao Jiang Ji-ping Zhang Wen-rui Chang Wolfgang Jahnke Marcel Blommers S. C. Panchal R. V. Hosur Bindu Pillay Puniti Mathur S. Srivatsun Ratan Mani Joshi N. R. Jaganathan V. S. Chauhan H. S. Atreya S. C. Sahu K. V. R. Chary Girjesh Govil Elisabeth Adjadj Éric Quinjou Nadia Izadi-Pruneyre Yves Blouquit Joël Mispelter Bernadette Heyd Guilhem Lerat Philippe Milnard Michel Desmadreil Y. Lin B. D. Nageswara Rao Vidva Raghunathan Mei H. Chau Prashant Pesais Sudha Srivastava Evans Coutinho Anil Saran Leizl F. Sapico Jayson Gesme Herbert Lijima Raymond Paxton Thamarapu Srikrishnan C. R. Grace G. Nagenagowda A. M. Lynn Sudha M. Cowsik Sarata C. Sahu S. Chauhan A. Bhattacharya G. Govil Anil Kumar Maurizio Pellecchia Erik R. P. Zuiderweg Keiichi Kawano Tomoyasu Aizawa Naoki Fujitani Yoichi Hayakawa Atsushi Ohnishi Tadayasu Ohkubo Yasuhiro Kumaki Kunio Hikichi Katsutoshi Nitta V. Rani Parvathy R. M. Kini Takumi Koshiba Yoshihiro Kobashigawa Min Yao Makoto Demura Astushi Nakagawa Isao Tanaka Kunihiro Kuwajima Jens Linge Seán O. Donoghue Michael Nilges G. Chakshusmathi Girish S. Ratnaparkhi P. K. Madhu R. Varadarajan C. Tetreau Molecular Biophysics Unit Indian Institute of Science Bangalore India Austrian Academy of Sciences Institute of Biophysics and X-ray Structure Research Graz Austria Faculty of Biology University of Konstanz Germany Institute of Medical Biochemistry University of Graz Austria Howard Huges Medical Institute Department of Chemistry & Biochemistry University of California La Jolla USA Department of Chemistry & Biochemistry University of California San Diego La Jolla USA Molecular Biophysics Unit India Department of Microbiology &Cell Biology Indian Institute of Science Bangalore India Macromolecular Structure Laboratory NCI - Frederick Cancer Research and Development Center ABL - Basic Research Program Frederick USA Department of Crystallography and Biophysics University of Madras Chennai Biochemistry Department Indian Institute of Science Bangalore India Condensed Matter Physics Division B.A.R.C. Trombay Mumbai Condensed Matter Physics Division Bhabha Atomic Research Centre Trombay Mumbai IMCB The University of Tokyo Tokyo Japan Mitsubishi Chemical Corporation Yokohama Research Center Yokohama Japan Faculty of Pharmaceutical Sciences Chiba University Chiba Japan Department of Biophysics All India Institute of Medical Sciences New Delhi India Department of Biophysics All India Institute of Medical sciences New Delhi India Institüt Physiologische Chemie Hamburg Germany Biophysics Department Bose Institute Calcutta India Slovak Academy of Sciences Institute of Molecular Biology Bratislava Slovakia Indian Institute of Science Bioinformatics Centre Bangalore Departments of Chemistry and Biochemistry Biological Macromolecular Structure Center USA Bulgarian Academy of Sciences Institute of Organic Chemistry Sofia Bulgaria Chinese Academy of Sciences Institute of Biophysics Beijing China Novartis Pharma AG Preclinical Research Basel Switzerland Department of Chemical Sciences Tata Institute of Fundamental Research Mumbai India Solid State Physics Div

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Lactic Acid Bacteria 1

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1000年

作者： Heping Zhang Yimin Cai

ISBN: (数字)9789401788410

ISBN: (纸本)9789401788403;9789401779654

The book summarizes the latest research and developments in dairy biotechnology and engineering. It provides a strategic approach for readers relating to fundamental research and practical work with lactic acid bacteria. The book covers every aspect from identification, ecology, taxonomy and industrial use. All contributors are experts who have substantial experience in the corresponding research field. The book is intended for researchers in the human, animal, and food sciences related to lactic acid bacteria. Dr. Heping Zhang is a Professor at the key laboratory of Dairy Biotechnology and engineering Ministry of Education, Inner Mongolia agricultural University, China. Dr. Yimin Cai works in Livestock and environment Division, Japan International Research Center for agricultural Sciences (JIRCAS), Japan.

关键词： Microbial Genetics and Genomics Medical Biochemistry Biochemical engineering Food Science Animal Biochemistry Nutrition

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