نتایج جستجو برای: surface functionalization

تعداد نتایج: 642239  

Journal: :Journal of the American Chemical Society 2018
Yulian He Zachary S Fishman Ke R Yang Brandon Ortiz Chaolun Liu Julia Goldsamt Victor S Batista Lisa D Pfefferle

A new class of hydrophobic CuO nanosheets is introduced by functionalization of the cupric oxide surface with p-xylene, toluene, hexane, methylcyclohexane, and chlorobenzene. The resulting nanosheets exhibit a wide range of contact angles from 146° (p-xylene) to 27° (chlorobenzene) due to significant changes in surface composition induced by functionalization, as revealed by XPS and ATR-FTIR sp...

Journal: :Accounts of chemical research 2013
Liming Dai

As global energy consumption accelerates at an alarming rate, the development of clean and renewable energy conversion and storage systems has become more important than ever. Although the efficiency of energy conversion and storage devices depends on a variety of factors, their overall performance strongly relies on the structure and properties of the component materials. Nanotechnology has op...

Journal: :Small 2008
Jill E Millstone Dimitra G Georganopoulou Xiaoyang Xu Wei Wei Shuyou Li Chad A Mirkin

Over the past two decades, there has been an enormous effort to understand, control, and use the relationship between the morphology of nanomaterials and their physical and chemical properties. Indeed, a great deal of effort has focused on controlling the size, shape, and composition of nanostructures. However, equally important is the surface chemistry of such structures, especially when one c...

2013
Yuanqin Jiang Honggang Zhang Yange Wang Min Chen Shefang Ye Zhenqing Hou Lei Ren

Biomedical applications of carbon nanotubes (CNTs) often involve improving their hydrophilicity and dispersion in biological media by modifying them through noncovalent or covalent functionalization. However, the potential adverse effects of surface-functionalized CNTs have not been well characterized. In this study, we functionalized multi-walled CNTs (MWCNTs) via carboxylation, to produce MWC...

2018
Maurizio Sansotera Sadaf Talaeemashhadi Cristian Gambarotti Carlo Pirola Mariangela Longhi Marco A Ortenzi Walter Navarrini Claudia L Bianchi

The functionalization of multi-walled carbon nanotubes (MW-CNTs) was obtained by generating reactive perfluoropolyether (PFPE) radicals that can covalently bond to MW-CNTs' surface. Branched and linear PFPE peroxides with equivalent molecular weights of 1275 and 1200 amu, respectively, have been thermally decomposed for the production of PFPE radicals. The functionalization with PFPE chains has...

2018
Diana P. Ferreira Armando Ferreira Raul Fangueiro

This paper provides new insights regarding jute fibers functionalization with silver nanoparticles (Ag NPs) with improved conductivity values and highlights the sustainability of the processes involved. These NPs were applied onto jute fabrics by two different sustainable methods: ultraviolet (UV) photoreduction and by using polyethylene glycol (PEG) as a reducing agent and stabilizer. Field Em...

2011
C. F. Carlborg F. Saharil T. Haraldsson W. van der Wijngaart

INTRODUCTION Common bonding techniques for lab-on-chip (LOC) microfluidic devices require surface bio-functionalization to be performed in-situ after the chip has been packaged due to the bio-incompatible features of the bonding technique, including high temperature requirements (e.g. thermal bonding of thermoplastics), use of organic solvents (e.g. PMMA bonding) or plasma activation (e.g. PDMS...

2015
Xavier Punet Rodolphe Mauchauffé José C. Rodríguez-Cabello Matilde Alonso Elisabeth Engel Miguel A. Mateos-Timoneda

The integration of implants or medical devices into the body tissues requires of good cell-material interactions. However, most polymeric materials used for these applications lack on biological cues, which enhanced mid- and long-term implant failure due to weak integration with the surrounding tissue. Commonly used strategies for tissue-material integration focus on functionalization of the ma...

Journal: Journal of Nanoanalysis 2014

Functionalization of carbon nanotube (CNT) was performed, during preparation of Fischer–Tropsch synthesis (FTS) via cobalt nanocatalysts, to modify the surface properties of CNT support. Common and functionalized CNT supported cobalt nanocatalysts were prepared using impregnation wetness method with cobalt loading of 15 wt.%. The catalysts were characterized by Brunauer–Emmett–Teller (BET), Fou...

2016
David N. Richards Dmitry Y. Zemlyanov Albena Ivanisevic

The growth, covalent functionalization, and subsequent DNA modification of gallium phosphide (GaP) nanorods is presented. Analysis of the nanorods by scanning electron microscopy (SEM), transmission electron microscopy (TEM), and X-ray diffraction (XRD) revealed important information regarding their physical properties such as the presence of twinning defects. The nanorods were deposited onto g...

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