顾仁敖
长期从事物理化学教学和光谱电化学研究。
个性化签名
- 姓名:顾仁敖
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学术头衔:
博士生导师
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学科领域:
物理化学
- 研究兴趣:长期从事物理化学教学和光谱电化学研究。
顾仁敖,男,1940年10月生,教授,江苏江阴申港人。1962年毕业于江苏师范学院化学系,留校任教。现为苏州大学化学物理研究室主任,物理化学专业博士生导师、学科带头人。1985年至2001年先后担任苏州大学化学化工系系主任、生物技术学院院长、副校级调研员。1981年12月由国家教委派往美国纽约市立大学进修,为期二年。1991年3月至9月以高级访问学者身份赴美国、加拿大访问、合作研究。
长期从事物理化学教学和光谱电化学研究。近期主要开展过渡金属的表面增强拉曼散射光谱及非水体系金属电极表面的拉曼光谱和电化学研究;金属、金属核壳纳米粒子的制备和纳米粒子阵列组装并在此基础上开展的生物分子的拉曼光谱研究和免疫捡测。1986年以来,先后主持国家自然科学基金项目7项、省部级项目20项,目前主持在研科研项目3项。己在国内外学术期刊上正式发表论文200余篇,出版著作5部。 现兼任全国光散射专业委员会、分子光谱专业委员会委员,《光散射学报》编委,《光谱学与光谱分析》副主编。1992年享受政府特殊津贴;科研“表面增强拉曼散射光谱研究” 、“铁等金属的表面拉曼光谱电化学研究及其在缓蚀中的应用”先后获得江苏省科技进步二等奖二项;贵金属电镀等成果获得省、部级科技进步奖四项;主编的《综合英汉科技大词典》获得国家辞书二等奖;1995年获苏州市首届优秀科技人才奖。
研究方向:光谱电化学;纳米电化学。
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10
顾仁敖, Peigen Cao, † Renao Gu, *, † and Zhongqun Tian‡
Langmuir 18(2002)7609-7615,-0001,():
-1年11月30日
The different initial interactions of benzotriazole (BTAH) with iron in both 0.5 M H2SO4 and simulated saline water (3.4% NaCl) have been investigated systematically by using a confocal microprobe Raman system, surface-enhanced Raman spectroscopy (SERS), and electrochemical potentiodynamic polarization curves. The SERS spectra of BTAH at the bare iron electrodes in both 0.5 M H2SO4 and simulated saline water have been obtained successfully for the first time. Electrochemical measurements show that the inhibition efficiency of BTAH is higher in saline water than that in acid solution, which is in accordance with the identification of the surface interaction on the basis of the SERS data. BTAH may be physisorbed onto the iron surface through its neutral molecule form or protonated BTAH2 + ions. While in saline water, the formation of the surface coordination compound characterized as Fe(II)-BTA may contribute to the outstanding spectral features. A cleavage of the NH bond is believed to occur while adsorption of BTAH onto iron proceeds. This more compact surface film results in a higher inhibition efficiency in comparison with that in an acid solution.
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顾仁敖, Peigen Cao, † Jianlin Yao, ‡ Bin Ren, ‡ Renao Gu, *, † and Zhongqun Tian*, ‡
J. Phys. Chem. B 106(2002)10150-10156,-0001,():
-1年11月30日
Surface-enhanced Raman scattering (SERS) spectra of thiourea at an electrochemically activated iron electrode have been investigated as a function of applied potential. The marked downshift of the CS stretching and upshift of the NCN symmetric stretching by comparison of the SERS with the normal Raman spectrum of thiourea are clearly observed and interpreted by coordination of thiourea with the iron surface through sulfur atom. The appearance of the low-frequency mode at ca. 283 cm-1 assigned to the Fe-S vibration supports the assumption of S-coordination of thiourea. The orientation of thiourea molecules is assumed to be slightly inclined to the iron surface at an intermediate angle due to the observation of the SCNN out-of-plane bending band. Potential dependence of the SERS spectra shows that thiourea may interact more strongly with the iron surface at relatively positive potentials. Coadsorption of the supporting electrolyte anion ClO4 - with thiourea has also been confirmed by the SERS spectra.
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顾仁敖, Peigen Cao, † Jianlin Yao, ‡ Bin Ren, ‡ Renao Gu, *, † and Zhongqun Tian*, ‡, §
J. Phys. Chem. B 106(2002)7283-7285,-0001,():
-1年11月30日
Surface-enhanced Raman spectroscopy has been extended successfully to the study of a bare iron electrode (without any deposition of other noble metals) exposed to the neutral solution containing thiocyanate over a wide potential range from -1.8 to -0.4 V. The applied potential has a significant influence on the Raman frequency shift of SCN- as a result of the electrochemical Stark effect. Both N- and S-coordination modes were observed. Results show that at large negative potentials N-bound SCN- is favored, whereas at relatively positive potentials, S-bound thiocyanate predominates the iron surface. A sudden change in the d
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顾仁敖, Peigen Cao, † Yuhua Sun, † and Renao Gu*, †
J. Phys. Chem. B 107(2003)5818-5824,-0001,():
-1年11月30日
Surface-enhanced Raman scattering (SERS) from the platinum electrode-acetonitrile interface in the presence of iodide, the lithium cation, water, and pyridine was analyzed as a function of applied potential. It was found that the typical Raman band of cyanide species by the dissociation of the solvent acetonitrile upon adsorption onto highly roughened platinum electrode surfaces was detectable for all of the systems that were studied. However, the onset potential of the dissociation reaction of acetontrile differed for the four systems. We assume that competitive adsorption may exist between each of the above four species and the solvent acetonitrile molecule, especially at the dissociation reaction-active sites of the Pt surface. This competitive adsorption therefore significantly inhibits the decomposition reaction of acetonitrile. The interactions of these adsorbates with Pt are assumed to weaken in the sequence pyridine > I-> water Li+ on the basis of the observations of different negative shifts of the onset potential of acetonitrile decomposition. For the system with water or iodide, double-band character for the CN band was also detected. It is assumed to be due to the existence of two types of adsorbed ion pairs at the Pt surface: CN-…CH3CN and CN-…Li+/Na+.
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顾仁敖, Peigen Cao, † Renao Gu, *, † and Zhongqun Tian*, ‡
J. Phys. Chem. B 107(2003)769-777,-0001,():
-1年11月30日
Surface-enhanced Raman scattering (SERS) spectrum of imidazole adsorbed at a silver electrode in nonaqueous acetonitrile solution has been investigated as a function of applied potential. The electrolyte is 0.1M LiClO4. Results show that imidazole adsorbs on silver as a neutral molecule via the pyridine nitrogen atom. Coadsorption of perchlorate anion with imidazole, possibly by forming intermolecular hydrogen bonding, is also suggested by the enhancement of the ClO4-band at 933 cm-1. An edge-on orientation of imidazole at more positive potentials is proposed by the observation of the increase in frequency of the ring breathing modes, along with the enhancement of most of the in-plane modes of imidazole. When the potential is made more negative, particularly near -0.5V, the imidazole ring may change from vertical to be slightly inclined to the silver surface at an intermediate angle from the surface normal. At the same time, a slight rotation of the imidazole ring plane may occur, evidenced by the observation of the changes in relative intensity of
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顾仁敖, Peigen Cao, † Yuhua Sun, † Jianlin Yao, ‡ Bin Ren, ‡ Renao Gu, *, † and Zhongqun Tian*, ‡
Langmuir 18(2002)2737-2742,-0001,():
-1年11月30日
The vibrational spectrum of carbon monoxide at the Pt/acetonitrile interface as a function of applied potential has been investigated using the surface-enhancedRamanspectroscopy technique. The electrolyte is 0.1 M LiClO4. The bands observed at ca. 506 and 2055 cm-1 are attributed to the platinum-CO (Pt-C) and intramolecular C-O (C-O) stretching vibrations, respectively, suggesting linearly adsorbed CO on platinum. The (Pt-C) band has an experimental Stark tuning rate of-4 cm-1/V, while the slope of (C-O) band frequency versus potential approaches zero before the onset of electro-oxidation ofCOads, possibly resulting from low surface coverage ofCOon platinum. The roughened Pt electrode surface has a high electrocatalytic activity, on whichCOelectro-oxidation occurs at ca.-0.7V(vs Ag/Ag+). The main product ofCOads oxidation is confirmed to be carbonate due to the existence of trace water in the double-layer region as a source of oxygen for the reaction. It has also been found that the solvent acetonitrile can exert a chemisorbed decomposition reaction on the roughened Pt surface, while the adsorption of CO can significantly inhibit this reaction.
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顾仁敖, Peigen Cao a, Renao Gu a, *, Bin Ren b, , Zhongqun Tian b
Chemical Physics Letters 366(2002)440-446,-0001,():
-1年11月30日
Surface-enhanced Raman scattering (SERS) spectra of pyridine adsorbed onto bare platinum and nickel electrodes in nonaqueous solutions are reported in this Letter. There are similarities and differences between the SERS from aqueous and nonaqueous solutions. The surface enhancement factor for platinum in acetonitrile solution has been calculated to decrease by a factor of ca. 10 compared with that in the aqueous media. The double-band character for the ring breathing mode is observed at 1009 and 1019cm-1. Two adsorption modes of pyridine on the platinum surface were assumed. Part of the pyridine molecules may be chemisorbed onto the surface, with the ring plane oriented vertical to the surface; other pyridine molecules may co-adsorb with lithium cations onto the surface.
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【期刊论文】SERS investigation of interfacial water at a silver electrode in acetonitrile solutions
顾仁敖, Peigen Cao a, Renao Gu a, *, Liqun Qiu a, Ru Sun a, Bin Ren b, Zhongqun Tian b,
Surface Science 531(2003)217-225,-0001,():
-1年11月30日
Surface-enhanced Raman scattering from a silver electrode in solution of 0.1 M LiClO4 in acetonitrile has been analyzed as a function of applied potential. Three m (O-H) bands associated with the interfacial water and two m (O-H) bands associated with the OH ion species were observed depending on the electrode potential. The band at 3487cm 1 is favored at relatively positive potentials and assigned to H2O molecules interacting with the electrode surface via the oxygen atoms. Another band at 3586cm 1 appears in a wider potential region and is assigned to the H2O molecules with one or both of the hydrogen atoms facing the electrode surface. Additionally, evidence for the possible surface ion pair, Li
Raman scattering spectroscopy, Silver, Water, Chemisorption
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顾仁敖, Peigen Cao, *, † Yuhua Sun, and Renao Gu*
J. Phys. Chem. B 108(2004)4716-4722,-0001,():
-1年11月30日
The vibrational spectrum of carbon monoxide, exerted by dissociation of formic aid, has been investigated at the platinum electrode as a function of applied potential by using the surface-enhanced Raman spectroscopy (SERS) technique. The electrolyte is 0.1M LiClO4. Two typical SERS features observed at 475-490 and 2055-2080 cm-1 are attributed to the platinum-CO (Pt-C) and intramolecular C-O (C-O) stretching vibration, respectively, indicating linearly adsorbed CO on platinum. Comparisons of the present data with previous studies in aqueous solutions show that solution components, particularly the dielectric in the inner double layer, may significantly influence the interaction of CO with platinum, especially the CO intramolecular mode. Electrooxidation of CO was observed to occur at potentials more positive than 0.6 V, being slightly negative relative to previous studies for CO on smooth platinum, suggestive of a higher electrocatalytic activity for the present highly roughened platinum surface. At positive and moderately negative potentials (-0.2 to 0.6 V), the Pt-C and CO intramolecular bands exhibit opposite frequency changes with decreasing potential, with Stark tuning rate being -6 and 24 cm-1/V, respectively. At more negative potentials, both
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【期刊论文】Surface-Enhanced Raman Scattering from Bare Zn Electrode
顾仁敖, Ren-Ao Gu, *, † Xiao-ying Shen, † Guo-kun Liu, ‡ Bin Ren, ‡ and Zhong-Qun Tian*, ‡
J. Phys. Chem. B 108(2004)17519-17522,-0001,():
-1年11月30日
Using confocal Raman microscopy, potential dependent surface-enhanced Raman spectra (SERS) of pyridine adsorbed on a bare zinc (Zn) bulk electrode were observed for the first time, and the adsorption behavior of pyridine on zinc was discussed. An electrochemical oxidation-reduction method was employed to roughen Zn electrodes for creating SERS. Related SEM measurement was performed to obtain the morphological information of the roughened electrode for understanding the SERS mechanism on it. An enhancement factor of around two orders of magnitude for pyridine adsorbed on a roughened Zn electrode was estimated.
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