彭天右
无机化学和材料化学。主要包括:1)纳米氧化铝的软化学制备及其产业化研究。2)高比表面积、高热稳定性多孔材料的制备。3)纳米功能材料的控制合成及其光催化降解污染物,光分解水制氢和光电化学转换性能研究。4)新型光敏剂、光电极器件及其光电化学转换效能研究
个性化签名
- 姓名:彭天右
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学术头衔:
博士生导师
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学科领域:
无机化学
- 研究兴趣:无机化学和材料化学。主要包括:1)纳米氧化铝的软化学制备及其产业化研究。2)高比表面积、高热稳定性多孔材料的制备。3)纳米功能材料的控制合成及其光催化降解污染物,光分解水制氢和光电化学转换性能研究。4)新型光敏剂、光电极器件及其光电化学转换效能研究
彭天右,男,湖北省麻城市人,1969年2月28日出生。1998年6月于武汉大学获理学博士学位。1998年4月留校任教。2001年10月至2003年5月日本京都大学博士后研究员,其间兼任日本财团法人基础化学研究所外国人特别研究员半年;2003年3至4月参加美国陶瓷学会第105届年会,顺访了Rochester大学、新泽西州立大学;2004年7至8月应邀访问日本京都大学福井谦一纪念研究中心,任客座研究员;2005年10月应邀访问香港浸会大学化学系。2000年6月晋升副教授,2004年11月破格晋升教授,2005年6月获博士生导师资格。现任化学与分子科学学院无机化学研究所支部书记兼副所长。为中国化学会会员;功能材料学会会员。曾获教育部自然科学二等奖(第三完成人);湖北省优秀博士学位论文奖;武汉大学蓝月亮优秀研究生指导教师奖和优秀研究生课程教学奖等奖项。先后主持国家自然科学基金,湖北省纳米重大专项,湖北省重点攻关计划,湖北省杰出人才基金,教育部留学回国人员基金等课题共14项。获发明专利3项,科技成果鉴定2项。发表论文70篇,其中49篇被SCI收录。
研究方向为无机化学和材料化学。主要包括:1)纳米氧化铝的软化学制备及其产业化研究。2)高比表面积、高热稳定性多孔材料的制备。3)纳米功能材料的控制合成及其光催化降解污染物,光分解水制氢和光电化学转换性能研究。4)新型光敏剂、光电极器件及其光电化学转换效能研究。
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20
彭天右, Peng Tianyou and Jiang Zucheng*
Journal of Analytical Atomic Spectrometry, January 1998, Vol. 13(75-78),-0001,():
-1年11月30日
A method for the determination of trace amounts of La, Y and Eu, based on the formation of volatile chelates between rare earth elements and 1-phenyl-3-methyl-4-benzoyl-pyrazolone [5] (PMBP) in a graphite furnace, is described. PMBP was used as a chemical modifier for the volatilization of La, Y and Eu from the electrothermal vaporizer into the ICP. The factors affecting the chelating reaction between La, Y and Eu and PMBP were studied in detail, and the vaporization behavior of the chelates formed in the graphite furnace was also investigated. It was found that the presence of an excess of PMBP was necessary to prevent the thermal decomposition of the chelates during the volatilization and transportation processes. Under the optimized conditions, the limits of detection for La, Y and Eu are 8.0, 1.0 and 0.9 ng ml-1, respectively, and the relative standard deviations range from 3.3% (La) to 4.0% (Y). The linear ranges of the calibration graphs span three orders of magnitude. The method was applied to the analysis of an environmental reference material and the results obtained were in good agreement with the reference values.
Inductively coupled plasma atomic emission spectrometry, electrothermal vaporization, rare earth element-1-phenyl-3-methyl-4-benzoylpyrazolone [5] chelate, rare earth element
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彭天右, Peng Tianyou, Jiang Zucheng* and Qin Yongchao
J. Anal. At. Spectrom., 1999, 14, 1049-1053,-0001,():
-1年11月30日
The vaporization behavior of silicon and three refractory trace elements (Al, Ti and Y) were studied in the presence and absence of a PTFE emulsion as fluorinating reagent and applying an electrothermal ICP-AES coupled system.It was found that during a 60 s ashing step at 700℃ about 90% of 100mg of Si3N4 can be decomposed and evaporated without considerable losses of the trace elements investigated. Calibration could be carried out by the standard addition method and the calibration curve method applying spiked slurries and aqueous standard solutions with peak height intensity measurements, respectively. The detection limits varied from 0.11 mg g−1 (Al) to 0.09mg g−1 (Ti) with RSD 1.9-4.2%.
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彭天右, Tianyou Peng
,-0001,():
-1年11月30日
A method has been developed for the determination of trace impurities in silicon nitride (Si3N4) powders by fluorination assisted electrothermal vaporization (ETV)/ICP-AES using the slurry sampling technique. Polytetrafluoroethylene (PTFE) emulsion as a fluorinating reagent not only effectively destroys the skeleton of Si3N4, but also carries out selective volatilization between the impurity elements (Cu, Cr) and the matrix (Si). The experimental parameters influencing fluorination reactions were optimized. The detection limits for Cu and Cr are 1.05ng/mL (Cu) and 1.58ng/mL (Cr), the RSDs are in the range of 1.9-4.2%. The proposed method has been applied to the determination of Cu and Cr in Si3N4 ceramic powders. The analytical results were compared with those obtained by independent methods.
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彭天右, Peng Tianyou*, Du Pingwu, Hu Bin, Jiang Zucheng
Analytica Chimica Acta 421(2000)75-81,-0001,():
-1年11月30日
Fluorination assisted electrothermal vaporization (ETV) was employed as sample introduction technique for the direct determination of trace amounts of impurities in titanium dioxide solid powder by inductively coupled plasma atomic emission spectrometry (ICP-AES). A polytetrafluoroethylene (PTFE) emulsion is used as a fluorination reagent to promote the vaporization of impurity elements in TiO2 powder from the graphite tube; the vaporization behavior of matrix element (Ti) and analyte (Cr, Cu, Fe and V) were studied. Under the selected conditions, about 100mg solid sample (10ml of 1%m/v TiO2 slurry) was pipetted into furnace, a pre-volatilization of the matrix could be performed by an ashing time of 70 s at 800℃ to eliminate the matrix effect, and then the analytes were vaporized into plasma at the vaporizing temperature of 2600℃. Calibration was performed using the standard addition method. The accuracy was checked by comparison of the results with solution fluorination assisted ETV-ICP-AES and pneumatic nebulization (PN)-ICP-AES based on the wet-chemical decomposition. Limits of detection between 0.07μg g−1 (Cr) and 0.2μg g−1 (V) were achieved. © 2000 Elsevier Science B.V. All rights reserved.
Inductively coupled plasma atomic emission spectrometry, Fluorination assisted electrothermal vaporization, Slurry sampling, Titanium dioxide
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彭天右, Tianyou Peng, * Xiaohai Sheng, * Bin Hu* and Zucheng Jiang*
Analyst, 2000, 125, 2089-2093,-0001,():
-1年11月30日
hermal vaporization inductively coupled plasma atomic emission spectrometry (ETV-ICP-AES) was employed for the direct determination of trace impurities in silicon carbide ceramic powders. The vaporization behaviors of silicon and five trace elements (Al, Cr, Cu, Fe and V) were studied in the presence and absence of polytetrafluoroethylene (PTFE) as fluorinating reagent. It was found that, during a 60 s ashing step at 800℃, about 97% of 100 mg of SiC can be decomposed and evaporated without considerable losses of the trace elements investigated. Calibration was performed using the standard addition method and the calibration curve method, applying spiked slurries and aqueous standard solutions, respectively. The accuracy was checked by comparison of the results with those obtained by solution fluorination assisted ETV-ICP-AES and pneumatic nebulization (PN)-ICP-AES involving wet chemical decomposition of the sample. Detection limits between 0.3μg g-1 (Al) and 0.08μg g-1 (Cu) were achieved. The precision, expressed as the relative standard deviation (RSD), was between 6.0% (for 18.2μg g-1 of Cr) and 2.8% (for 177μg g-1 of Fe).
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彭天右, Peng Tianyou*, Chang Gang, Sheng Xiaohai, Jiang Zucheng, Hu Bin
Analytica Chimica Acta 433(2001)255-262,-0001,():
-1年11月30日
Fluorination-assisted electrothermal vaporization (ETV)-inductively coupled plasma-atomic emission spectrometry (ICPAES) for the direct determination of trace amounts of refractory impurity elements in silicon carbide ceramic powders using slurry sampling has been developed. Investigation indicated that a polytetrafluoroethylene (PTFE) emulsion is a useful fluorinating reagent for the destruction of silicon carbide and simultaneous vaporization of the refractory impurities like B, Mo, Ti, and Zr. The vaporization behaviors of the analytes in slurry and solution were comparatively investigated in the presence of PTFE. The fluorinating vaporization processes and the influence factors for this method have been also studied in detail. The experimental results indicated that 80mg silicon carbide (10ml of 0.8% (m/v) slurry) could be destroyed and vaporized completely with 600mg of PTFE under the selected conditions. Calibrationwas performed using the standard addition method with aqueous standard solutions. The accuracy was checked by comparison of the results with those obtained by solution fluorination-assisted ETV-ICP-AES and pneumatic nebulization (PN)-ICP-AES involving a wet-chemical decomposition of the sample. Detection limits between 0.5mg g−1 (B) and 0.2mg g−1 (Mo) were achieved. In most cases, the precision expressed as relative standard deviation (R.S.D.) was better than 8%. © 2001 Elsevier Science B.V. All rights reserved.
Fluorination-assisted ETV-ICP-AES, Silicon carbide, PTFE emulsion, Slurry sampling, Trace impurities
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彭天右, Tianyou Peng
,-0001,():
-1年11月30日
A new analytical procedure for the direct determination of metal impurities (Cr, Cu, Fe and V) in aluminium oxide ceramic powders by slurry sampling fluorination assisted electrothermal vaporization-inductively coupled plasma-atomic emission spectrometry (ETV-ICPAES) is reported. A polytetrafluoroethylene (PTFE) emulsion was used as a fluorinating reagent to promote the vaporization of impurity elements in aluminium oxide ceramic powders from the graphite tube. A vaporization stage with a long ramp time and a short hold time provided the possibility of temporal analyte-matrix separation. The experimental results indicated that a 10μL1% m/v slurry of aluminium oxide could be destroyed and vaporized completely with 600μg PTFE under the selected conditions. Two aluminium oxide ceramic powder samples were used without any additional pretreatment. Analytical results obtained by using standard addition method with aqueous standard solution were checked by comparison of the results with pneumatic nebulization (PN)-ICP-AES based on the wet-chemical decomposition and analyte-matrix separation. The limits of detection (LODs) between 0.30μg g-1 (Fe ) and 0.08μgg-1 (Cu) were achieved, and, the repeatability of measurements was mainly better than 10%.
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彭天右, Tianyou Peng, *, †, ‡ Akira Hasegawa, ‡ Jianrong Qiu, § and Kazuyuki Hirao†, ‡, §
Chem. Mater. 2003, 15, 2011-2016,-0001,():
-1年11月30日
Titania microtubules with high specific surface areas and well-developed framework mesopores forming the tubular walls by a surfactant-mediated template in the sol-gel process were fabricated in a laurylamine hydrochloride (LAHC)/tetra-n-butyl-orthotitanate (TBOT) system. The outer diameter and the wall thickness of titania microtubules are 2-8 and 0.2-2μm, respectively. The walls of the microtubules consisted of nanochannels with exceptionally uniform pore size. This technique is a convenient and facile procedure for fabricating hierarchical ordered hollow tubules. The possible mechanism of the formation of the microtubules in the present system was discussed in detail.
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彭天右, Tianyou Peng a, b, *, Huanpin Yang a, Ke Dai a, Xuli Pu a, Kazuyuki Hirao b
Chemical Physics Letters 379(2003)432-436,-0001,():
-1年11月30日
Semiconductor CdS nanotube arrays were synthesized within the pores of the PAO membranes by using molecular anchor templating synthesis method. The CdS nanotube arrays obtained were characterized using scanning electron microscopy (SEM), X-ray diffractomemter (XRD) and transmission electron microscopy (TEM) with energy-dispersive X-ray spectroscopic analyzer (EDS), respectively. The formation mechanism of CdS nanotube was also discussed. This is the first report on the highly ordered CdS nanotube arrays with 60lm in length and 100nm in outer diameter. The present method shows the advantages of simplicity, high efficiency and low cost.
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【期刊论文】Combustion synthesis and photoluminescence of SrAl2O4: Eu,Dy phosphor nanoparticles
彭天右, Tianyou Peng a, *, Huanping Yang a, Xuli Pu a, Bin Hu a, Zucheng Jiang a, Chunhua Yan b
Materials Letters 58(2004)352-356,-0001,():
-1年11月30日
Eu2 +,Dy3 + co-doped strontium aluminate (SrAl2O4) phosphor nanoparticles with high brightness and long afterglow were prepared by glycine-nitrate solution combustion synthesis at 500℃, followed by heating the resultant combustion ash at 1100℃ in a weak reductive atmosphere of active carbon. The average particle size of the SrAl2O4:Eu,Dy phosphor nanoparticles ranges from 15 to 45nm as indicated by transmission electron microscopy (TEM). The broad-band UV-excited luminescence of the SrAl2O4:Eu,Dy phosphor nanoparticles was observed at kmax=513nm due to transitions from the 4f65d1 to the 4f7 configuration of the Eu2+ion. The results indicated that the main peaks in the emission and excitation spectrum of phosphor nanoparticles shifted to the short wavelength compared with the phosphor obtained by the solid-state reaction synthesis method. The decay speed of the afterglow for phosphor nanoparticles was faster than that obtained by the solid-state reaction method.
Long-afterglow phosphor, Combustion synthesis, Strontium aluminate, Hole trap, Optical properties
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