نتایج جستجو برای: nanoscale tio2

تعداد نتایج: 46297  

2014
Gang Guo Qiwu Shi Yanbing Luo Rangrang Fan Liangxue Zhou Zhiyong Qian Jie Yu

This study investigated ageing-resistant properties of carboxyl-terminated polyester (polyethylene glycol terephthalate) composites modified with nanoscale titanium dioxide particles (nano-TiO2). The nano-TiO2 was pretreated by a dry coating method, with aluminate coupling agent as a functional grafting additive. The agglomeration resistance was evaluated, which exhibited significant improvemen...

2011
Meidan Ye Danny Vennerberg Changjian Lin Zhiqun Lin

Semiconductor photocatalysts have important applications in the fields of renewable energy and environmental remediation. Of these, TiO2 stands out as one of the most investigated compounds in contemporary material science. Because of its unique physical and chemical properties, TiO2 is extensively used in photoelectrochemical applications including photocatalysis and photovoltaics. In this Rev...

2016
Dae Gyu Jang Chang Hyuk Ahn Seok Choi Jong Ho Kim Jong Kyu Kim Jin Chul Joo

An innovative nanoscale ZnO/polybutadiene rubber composite (ZBRC) was developed as a valid alternative to TiO2 particles or immobilized TiO2 for the mineralization of chlorinated hydrocarbons without difficulties in the recovery of nanoscale photocatalyst particles. A synergistic increase in the removal of 1,1,2-trichloroethylene (TCE) through the coupled reaction processes (i.e., sorption, pho...

2014
Xin Zhang Weiwei Chen Jianjun Wang Yang Shen Yuanhua Lin

Interface issues are common and crucial in nanocomposites or nanohybrid systems since the interface area is enormous on the nanoscale. In the 0-3 polymer nanocomposites, in which nano-inclusions (0-dimension) are embedded in 3-dimensionally connected polymer matrix, enhanced dielectric permittivity could be induced by the interfacial polarization at the interfaces between the nano-inclusions an...

2013
Bin Zhang Hai-Feng Tan Jia-Wei Yan Ming-Dong Zhang Xu-Dong Sun Guang-Ping Zhang

Biological materials with hierarchically laminated structures usually exhibit a good synergy between strength and fracture toughness. Here, we show that a bio-inspired (polyelectrolyte (PE)/TiO2)4 nanolayered composite with a thickness ratio of TiO2 and amorphous PE layers of about 1.1 has been prepared successfully on Si substrates by layer-by-layer self-assembly and chemical bath deposition m...

Journal: :پژوهش های علوم و صنایع غذایی ایران 0
nasrin jamshidi kaljahi babak ghanbarzadeh jalal dehghannya mahmoud sowti khiyabani ali akbar entezami

cellulose nanocrystal (cnc) is a type of nanomaterial which is produced by partial hydrolysis of cellulose and elimination of its amorphous regions. cnc has several advantages such biodegradability and safety toward human health. in this study, cnc was produced from cotton linters and methods such transmission electron microscopy which were used for confirmation of nanoscale size production of ...

Journal: :Journal of biomedical materials research. Part A 2006
Seunghan Oh Chiara Daraio Li-Han Chen Thomas R Pisanic Rita R Fiñones Sungho Jin

Vertically aligned yet laterally spaced nanoscale TiO2 nanotubes have been grown on Ti by anodization, and the growth of MC3T3-E1 osteoblast cells on such nanotubes has been investigated. The adhesion/propagation of the osteoblast is substantially improved by the topography of the TiO2 nanotubes with the filopodia of growing cells actually going into the nanotube pores, producing an interlocked...

Journal: :Physical chemistry chemical physics : PCCP 2014
Lili Cai In Sun Cho Manca Logar Apurva Mehta Jiajun He Chi Hwan Lee Pratap M Rao Yunzhe Feng Jennifer Wilcox Fritz B Prinz Xiaolin Zheng

Doping nanowires (NWs) is of crucial importance for a range of applications due to the unique properties arising from both impurities' incorporation and nanoscale dimensions. However, existing doping methods face the challenge of simultaneous control over the morphology, crystallinity, dopant distribution and concentration at the nanometer scale. Here, we present a controllable and reliable met...

2015
Lasse Karvonen Tapani Alasaarela Henri Jussila Soroush Mehravar Ya Chen Antti Säynätjoki Robert A. Norwood Nasser Peyghambarian Khanh Kieu Seppo Honkanen Harri Lipsanen

We demonstrate a novel atomic layer deposition (ALD) process to make high quality nanocrystalline titanium dioxide (TiO2) and zinc oxide (ZnO) with intermediate Al2O3 layers to limit the crystal size. The waveguide losses of TiO2/Al2O3 nanolaminates measured using the prism coupling method for both 633 nm and 1551 nm wavelengths are as low as 0.2 ± 0.1 dB/mm with the smallest crystal size. We a...

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