杨华明
无机功能材料、介孔材料合成与组装、材料机械化学、功能矿物材料、高技术陶瓷等。
个性化签名
- 姓名:杨华明
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学术头衔:
博士生导师
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学科领域:
材料科学
- 研究兴趣:无机功能材料、介孔材料合成与组装、材料机械化学、功能矿物材料、高技术陶瓷等。
杨华明,浙江绍兴人,中南大学教授、博士生导师,入选教育部新世纪优秀人才支持计划和湖南省首批新世纪121人才工程,获中南大学教学名师奖。在中南工业大学获学士(1990)、硕士(1993)和博士学位(1998),曾在英国Bristol大学(2008-2009)、俄罗斯科学院固态化学与机械化学研究所(2005)访问。研究兴趣包括矿物资源精细化加工、矿物材料、粉体制备等。主持国家自然科学基金、863课题、国家外专局/教育部重点项目、教育部留学回国人员基金等20余项科研。在J. Phys. Chem. B、Clays & Clay Miner.、Am. Mineral.等刊物发表SCI论文60余篇,SCI他引400余次,获国家专利10余件,出版著作/教材3部,获湖南省优秀博士学位论文及多项科技奖励,获中国硅酸盐学会青年科技奖、陈新民奖励基金优秀年轻教师奖,指导3名研究生获湖南省优秀硕士学位论文。现任中国硅酸盐学会工艺岩石学分会副理事长、中国颗粒学会理事、中国矿物岩石地球化学学会矿物物理矿物结构专委会委员等。
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223
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成果数
6
【期刊论文】Microwave-assisted synthesis and luminescent properties of pure and doped ZnS nanoparticles
杨华明, Huaming Yang ∗, Chenghuan Huang, Xiaohui Su, Aidong Tang
Journal of Alloys and Compounds 402(2005)274-277,-0001,():
-1年11月30日
Pure and doped ZnS nanoparticles have been successfully synthesized via microwave irradiation. X-ray diffraction (XRD) analysis shows that the crystal size of the pure ZnS particles is about 6.5 nm. The ultraviolet–visible (UV–vis) absorption spectra of the samples indicate that the irradiation time shows no significant influence on the size of ZnS nanoparticles. It is also found that the luminescent properties of ZnS nanoparticles are greatly affected by either the microwave irradiation time or dopants of various metallic ions (Ag+, Cu2+, Ce3+ and Sn4+). The intensity of photoluminescence (PL) emission reaches its maximum and then decreases with prolonging the microwave irradiation time. The luminescence intensity of ZnS nanoparticles doped with 0.2% cerium, which is stronger than that of other dopants, is about two times that of sample doped with 0.2% Ag+ and 1.6 times that of pure ZnS nanoparticles. But when the amount of doped cerium reaches 0.4%, the emission efficiency is lower than that of pure ZnS. All peak emission wavelength is 450 nm, indicating that the luminescent centers of various metallic ions are not formed within the doped ZnS nanoparticles.
ZnS, Nanostructures, Microwave irradiation, Doping, Luminescence
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【期刊论文】In2O3 nanoparticles synthesized by mechanochemical processing
杨华明, Huaming Yang *, Aidong Tang, Xiangchao Zhang, Wuguo Yang, Guanzhuo Qiu
Scripta Materialia 50(2004)413-415,-0001,():
-1年11月30日
In2O3 nanoparticles were synthesized by a mechanochemical reaction (InCl3·4H2O+ NaOH) with NaCl as a diluent and subsequent calcination, producing In2O3 nanoparticles (26.7nm) at 500℃ for 1h. The size of the nanoparticle increases with increasing calcination temperature.
Indium oxide (, In2O3), , Nanocrystalline materials, Crystal growth, Differential thermal analysis, X-ray diffraction
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【期刊论文】Synthesis of tin oxide nanoparticles by mechanochemical reaction
杨华明, Huaming Yang∗, Yuehua Hu, Aidong Tang, Shengming Jin, Guanzhou Qiu
Journal of Alloys and Compounds 363(2004)271-274,-0001,():
-1年11月30日
The synthesis of tin oxide (SnO2) nanoparticles by mechanochemical reaction (SnCl2 +Na2CO3) with NaCl as diluent and subsequent thermal treatment was investigated using differential thermal analysis (DTA), thermogravimetric analysis (TGA), X-ray diffraction (XRD), infrared spectroscopy (IR) and transmission electron microscopy (TEM). Heat treatment of the as-milled powder at 600℃ in air and removal of NaCl through washing produced the SnO2 nanocrystallites with an average crystal size of about 28 nm, varying with the thermal treatment temperature. The mechanism of nanocrystallites growth is discussed.
Oxide materials, Nanostructured materials, Mechanochemical processing, X-Ray diffraction, TEM
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【期刊论文】Mechanochemical synthesis of cobalt oxide nanoparticles
杨华明, Huaming Yang*, Yuehua Hu, Xiangchao Zhang, Guanzhou Qiu
Materials Letters 58(2004)387-389,-0001,():
-1年11月30日
Cobalt oxide (Co3O4) nanoparticle was synthesized by thermal treatment of the precursor obtained via mechanochemical reaction of Co(NO3)2+6H2O with NH4HCO3. Calcination of the precursor at 300 jC resulted in the formation of Co3O4 nanoparticles of 13 nm in crystal size. The precursor was examined by simultaneous differential thermal analysis (DTA) and thermogravimetric analysis (TGA). The Co3O4 nanoparticles were characterized by X-ray diffraction (XRD) and transmission electron microscopy (TEM). Effect of calcination temperature on Co3O4 crystal size was discussed. The activation energy (E) of Co3O4 nanoparticle formation during thermal treatment was calculated to be 15.9 kJ/mol.
Cobalt oxide (, Co3O4), , Nanomaterials, Mechanochemical synthesis, X-ray technique
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【期刊论文】Formation of NiFe2O4 nanoparticles by mechanochemical reaction
杨华明, Huaming Yang*, Xiangchao Zhang, Weiqin Ao, Guanzhou Qiu
Materials Research Bulletin 39(2004)833-837,-0001,():
-1年11月30日
Preparation of nanosized NiFe2O4 particles by mechanochemical reaction(NiO þ a-Fe2O3) and subsequent thermal treatment was investigated using X-ray diffraction (XRD). Thermal treatment of the as-milled powder at 700℃ for 1h led to the formation of NiFe2O4 nanoparticles with an average crystal size of about 23nm. Effect of thermal treatment temperature on the crystal size of the nanoparticles was studied. The mechanism of nanoparticles growth was primarily discussed. The activation energy of NiFe2O4 nanoparticle formation during calcination was calculated to be 16.6 kJ/mol.
A., Inorganic compounds, A., Nanostructure, B., Crystal growth, C., X-ray diffraction
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【期刊论文】Mechanochemical synthesis of In2O3/CuO nanocomposites
杨华明, Huaming Yang∗, Xiangchao Zhang, Aidong Tang, Ke Zhang, Guanzhou Qiu
Materials Chemistry and Physics 86(2004)330-332,-0001,():
-1年11月30日
In2O3/CuO nanocomposites have been successfully synthesized by heating the precursor obtained via a mechanochemical reaction. The precursor and the nanocomposites were characterized using X-ray diffraction and scanning electron spectroscopy. The heat treatment of the precursor at 600℃ in air for 2h resulted in the formation of In2O3/CuO nanocomposites with an average crystal size of about 22nm, varying with the calcination temperature. The lattice parameter of the nanocomposites, lower than that of single In2O3, decreased with increasing the heat treatment temperature. The mechanochemical method is a novel, cheap and convenient technique suitable for large-scale synthesis of composite nanocrystallites. The mechanism of nanocrystallite growth is primarily investigated.
Nanocomposites, Mechanochemical reaction, Nanocrystallite growth, In2O3/, CuO alloy
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