汪信
软化学方法和无机纳米材料制备工艺
个性化签名
- 姓名:汪信
- 目前身份:
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学术头衔:
博士生导师
- 职称:-
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学科领域:
应用化学(具体应用入有关学科)
- 研究兴趣:软化学方法和无机纳米材料制备工艺
汪信,南京理工大学副校长,教授,博士生导师,兼任国务院学位委员会学科评议组成员,中国化学会理事,应用化学委员会副主任,《应用化学》、《工程塑料应用》杂志编委。主要从事软化学方法和无机纳米材料制备工艺的研究,出版专著2部,发表论文200余篇,获发明专利6项。2005年项目“几种无机纳米材料制备和应用研究”获国家科技进步二等奖。
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436
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成果数
9
汪信, Jianfei
,-0001,():
-1年11月30日
In order to disperse silicon carbide (SiC) nanoparticles homogeneously in a non-aqueous medium, the surface of SiC nanoparticles needs to be modified via surface organic functionalization. A method of SiC nanoparticle surface modification by grafting of polyacetals via inorganic–organic composite coating was developed. The resulting graft percentage of up to 10.5% was much higher than that of direct grafting. The inorganic–organic composite coating on a SiC nanoparticle surface led to an almost complete decomposition of the secondary structure of the agglomerates and the formation of the primary structure. Dispersibility of the modified version was studied by using a transmission electron microscope (TEM) and size distribution analyser. The sedimentation experiments showed that the coated SiC nanoparticles exhibited good suspension stability in butanone. The composition of the inorganic–organic composite coating on the SiC nanoparticles was investigated by energy dispersive x-ray analyses (EDX), hydrogen nuclear magnetic resonance (1H NMR) and Fourier-transformed infrared spectroscopy (FT-IR). This work provides a novel concept of surface grafting modification for non-oxide nanoparticles to improve their dispersibility in non-aqueous medium.
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汪信, Chun
Journal of Colloid and Interface Science 310, (2007)643-647,-0001,():
-1年11月30日
TiO2/ZrO2
Titania,
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汪信, Qingli
Macromol. Rapid Commum. 2005, 26, 1099-1103,-0001,():
-1年11月30日
A
conducting
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汪信, Junwu
Materials Science and Engineering A384(2004)172-176,-0001,():
-1年11月30日
Needle-shaped copper oxide (CuO) nanocrystals have been successfully prepared by hydrolysis of copper acetate (Cu(OAc)2) solution. The samples were characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS) and UV–vis absorption spectroscopy. The results show that the diameters of the needle-shaped CuO nanocrystals can be controlled between 10 and 45 nm simply by varying the concentration of Cu(OAc)2 solution, the presence of small amounts of cetyltrimethylammonium bromide (CTAB) can render needle-shaped CuO well dispersed. The band gap is estimated to be 2.78 eV according the results of the optical measurements of the CuO nanocrystals.
Needle-shaped,
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汪信, Juan
Journal of Solid State Chemistry 165, 193-198(2002),-0001,():
-1年11月30日
A
stearic
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汪信, Xiaoheng
Materials Science and Engineering A289(2000)241-245,-0001,():
-1年11月30日
TiO2 nanoparticles were prepared using a sol-gel method with inorganotitanates and polyethylene glycol (PEG). However, the way TiO2 particles were obtained from the dry gel was not by calcining but by redissolying the dry gel which had been treated at 100°C, thereby releasing the particles. The TiO2 powder prepared in this manner was ultra-fine (~4 nm) and crystallized (anatase phase) merely by being exposed to 100°C while inside the gel. It was supposed that this low temperature crystallization of TiO2 results from the special structure of the gel which formed through the linking of TiO(NO3)2 · H2O with PEG chains by a hydrogen bond. This preparation method also has an advantage in environmental protection.
Low
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汪信, Wenxiang
Polvmer Vol. 36 No. 19, pp. 3761-3765, 1995,-0001,():
-1年11月30日
Metal-containing
metal-containing
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