Volume 3

Issue 09,2010

(8 articles)

Jinhui Song1, Huizhi Xie2,§, Wenzhuo Wu1, V. Roshan Joseph2, C. F. Jeff Wu2(), and Zhong Lin Wang1()

By using statistical model to optimize experimental parameters, nanogenerator has tripled the average output voltage than that of conventional one.
2010, 3(9): 613–619

Yongfu Sun, Yi Xie (), Changzheng Wu, Shudong Zhang, and Shishi Jiang

Mesostructured BiVO4 quantum tubes, with ultranarrow diameter of 5 nm, ultrathin wall thickness down to 1 nm and exposed {020} facets, have been synthesized via a hydrothermally-mediated assembly–fusion strategy at temperatures as low as 100 °C. This method afforded high-quality quantum tubes exhibiting greatly enhanced dual response to visible light and temperature compared with bulk BiVO4. The materials have potential applications as visible-light photocatalysts and eco-benign temperature indicators offering improved environmental quality and safety.
2010, 3(9): 620–631

Qiang Li1, Jianping Yang1, Dan Feng1, Zhangxiong Wu1, Qingling Wu1, Sung Soo Park2, Chang-Sik Ha2, and Dongyuan Zhao1 ()

Hierarchical porous carbon nitride spheres with partially crystalline pore walls have been synthesized via a nanocasting approach by using mesoporous silica spheres as a hard template, and ethylenediamine and carbon tetrachloride as precursors; they exhibit excellent CO2- capture performance and stability to cycling when acting as a sorbent.
2010, 3(9): 632–642

Xiaojun Zhang1,2, Wenhui Shi1, Jixin Zhu1, Weiyun Zhao1, Jan Ma1, Subodh Mhaisalkar1,3, Tuti Lim Maria4,5, Yanhui Yang6, Hua Zhang1, Huey Hoon Hng1 (), and Qingyu Yan1,3 ()

Porous NiO nanocrystals with controlled morphology and total surface area have been formed by controlled thermal decomposition and re-crystallization of β-Ni(OH)2. Electrochemical analysis revealed the structure-dependence of the specific charge capacitance for these porous NiO nanocrystals, e.g., 390 F/g for nanocolumns due to their large surface area as high as 102 m2/g, but only 176 F/g for nanoslices with a surface area of 11 m2/g.
2010, 3(9): 643–652

Zhipei Sun1, Daniel Popa1, Tawfique Hasan1, Felice Torrisi1, Fengqiu Wang1, Edmund J. R. Kelleher2, John C. Travers2, Valeria Nicolosi3, and Andrea C. Ferrari1 ()

Stable, wideband tunable, near-transform limited ultrafast pulse generation (see the right figure) has been achieved with a fiber laser mode-locked by graphene (see the left figure). The wideband operation capability of graphene holds great promises for various photonic applications including biomedical research, spectroscopy and telecommunications.
2010, 3(9): 653–660

Yingpeng Wu, Bin Wang, Yanfeng Ma, Yi Huang, Na Li, Fan Zhang, and Yongsheng Chen ()

An arc-discharge method using a buffer gas containing carbon dioxide has been developed for the efficient and large-scale synthesis of few-layered graphene. Highly flexible films with good conductivity can be easily fabricated from the resulting few-layered graphene solutions and the film conductivity remains unchanged even after more than 1500 bending cycles.
2010, 3(9): 661–669

Mingjie Liu2, 3, Xueli Liu1, 3, Jingxia Wang1, Zhixiang Wei2(), and Lei Jiang1()

Electromagnetic synergetic actuators based on polypyrrole/Fe3O4 hybrid nanotube arrays have been fabricated by electrochemical polymerization. The resulting dual-responsive actuator can perform biomimetic movements like arm–hand coordination, where a magnetic field can be used for primary large-scale angular actuation like an arm, and then an electric potential employed for secondary small-scale angular adjustments like a hand.
2010, 3(9): 670–675

nder Metin1,2, Saim zkar1, and Shouheng Sun2 ()

Monodisperse nickel nanoparticles have been synthesized by the reduction of nickel(Ⅱ) acetylacetonate with the borane–tributylamine complex in oleylamine and oleic acid. When supported on SiO2, the nickel nanoparticles showed the highest activity ever reported for nickel-catalyzed hydrolysis of the ammonia–borane complex in terms of hydrogen release under ambient conditions.
2010, 3(9): 676–684