Highly dispersed platinum nanoparticles supported on silica as catalyst for hydrogen production

RSC Advances ◽  
2014 ◽  
Vol 4 (91) ◽  
pp. 50114-50122 ◽  
Author(s):  
Nezar H. Khdary ◽  
Mohamed A. Ghanem
Keyword(s):  
Hydrogen Production ◽  
Chemical Modification ◽  
Pt Nanoparticles ◽  
Average Diameter ◽  
Synthetic Approach ◽  
Surface Chemical ◽  
Reduction Processes ◽  
Highly Dispersed ◽  
Simple Surface ◽  
Surface Chemical Modification

A synthetic approach is developed to produce highly disperse, low loading (3.28 wt%) Pt nanoparticles incorporated silica (Pt-NP–S) with average diameter of 3.5 nm using economical and simple surface chemical modification and reduction processes.

scholarly journals Sputtering yields and surface chemical modification of tin-doped indium oxide in hydrocarbon-based plasma etching

2015 ◽  
Vol 33 (6) ◽  
pp. 060606 ◽  
Author(s):  
Hu Li ◽  
Kazuhiro Karahashi ◽  
Masanaga Fukasawa ◽  
Kazunori Nagahata ◽  
Tetsuya Tatsumi ◽  
...  
Keyword(s):  
Chemical Modification ◽  
Indium Oxide ◽  
Plasma Etching ◽  
Surface Chemical ◽  
Sputtering Yields ◽  
Surface Chemical Modification

The facile surface chemical modification of a single glass nanopore and its use in the nonenzymatic detection of uric acid

2015 ◽  
Vol 51 (10) ◽  
pp. 1914-1917 ◽  
Author(s):  
Haili He ◽  
Xiaolong Xu ◽  
Ping Wang ◽  
Lizhen Chen ◽  
Yongdong Jin
Keyword(s):  
Uric Acid ◽  
Chemical Modification ◽  
Chemical Method ◽  
Surface Chemical ◽  
Enzymatic Detection ◽  
Surface Chemical Modification

A single glass nanopore was modified with gold through a facile chemical method and used for the non-enzymatic detection of uric acid.

Stabilization of Porous Silicon Free-Standing Coupled Optical Microcavities by Surface Chemical Modification

2019 ◽  
Vol 16 (3) ◽  
pp. 211-219 ◽  
Author(s):  
Bernard Gelloz ◽  
Kouichiro Murata ◽  
Toshiyuki Ohta ◽  
Mher Ghulinyan ◽  
Lorenzo Pavesi ◽  
...  
Keyword(s):  
Porous Silicon ◽  
Chemical Modification ◽  
Surface Chemical ◽  
Free Standing ◽  
Optical Microcavities ◽  
Surface Chemical Modification

scholarly journals The Effect of Two-Stage Acid Treatment on Surface Behavior and Improvement of Bioactivity of Nitinol Alloy

2020 ◽  
Vol 11 (3) ◽  
pp. 10690-10702
Keyword(s):  
Surface Roughness ◽  
Chemical Modification ◽  
Surface Chemistry ◽  
Healing Process ◽  
In Vitro Study ◽  
Surface Chemical ◽  
Two Stage ◽  
Nitinol Alloy ◽  
Surface Chemical Modification

Surface properties, including morphology, submicron morphology, and surface chemistry, are essential factors that affect the quality and manner of biological responses at the site of tissue contact with the implant, affecting the bone healing process. In this in vitro study, morphology and biocompatibility of nitinol (NiTi) memory alloy surfaces mechanically polished and modified with a chemical solution consisting of three types of acid (HCl-HF-H3PO4) and then chemical operations in solution (HNO3 and HCl) with a Volumetric scale of 1:1 and examined at ambient temperature. 75 samples were used for surface chemical modification, biological evaluations, and surface roughness, and also 9 samples as control. Scanning electron microscopy (SEM), atomic force microscopy (AFM), and nitinol alloy (NiTi) surface roughness measurements were performed to analyze the surfaces. Besides, MG-63 cells were cultured on different nitinol alloy levels to evaluate adhesion and cell growth and proliferation. Data were analyzed using t-test and one-way analysis of variance. The results show that the chemical surface modification operation with two-stage acid solution had a higher roughness compared to the unmodified surfaces and the surface chemical modification operation with the acidic solution with an only solution consisting of (HCl-HF-H3PO4). Cell culture evaluations also showed that the two-stage modified nitinol levels showed significant cell adhesion and significant growth and proliferation compared to the tertiary acid-modified and unmodified levels. The surface chemical modification method for nitinol alloy can change the surface chemistry and change the surface morphology and create sub-micron scale roughness. This can increase the connectivity of the implant tissue and reduce the toxic effect of nickel.

Topological surface states of Bi2Te2Se are robust against surface chemical modification

2014 ◽  
Vol 8 (12) ◽  
pp. 997-1002 ◽  
Author(s):  
Conor R. Thomas ◽  
Girija Sahasrabudhe ◽  
Satya Kumar Kushwaha ◽  
Jun Xiong ◽  
Robert J. Cava ◽  
...  
Keyword(s):  
Chemical Modification ◽  
Surface States ◽  
Surface Chemical ◽  
Topological Surface ◽  
Surface Chemical Modification

Polymer wrapping versus well-oriented crystal growth of polythiophenes onto multi-wall carbon nanotubes via surface chemical modification and regioregularity deliberation

2018 ◽  
Vol 42 (17) ◽  
pp. 14469-14480 ◽  
Author(s):  
Somaiyeh Charoughchi ◽  
Samira Agbolaghi ◽  
Sahar Aghapour ◽  
Raana Sarvari ◽  
Farhang Abbasi
Keyword(s):  
Carbon Nanotubes ◽  
Crystal Growth ◽  
Chemical Modification ◽  
Surface Chemical ◽  
Oriented Crystal ◽  
Multi Wall Carbon Nanotubes ◽  
Stem Leaf ◽  
Polymer Wrapping ◽  
Surface Chemical Modification

Distinct nano-hybrids including double-fibrillar, shish–kebab, shish–kebab–shish, stem–leaf and stem–leaf–stem were developed using P3HT and CNTs.

Surface chemical modification of natural cellulose fibers

2001 ◽  
Vol 83 (1) ◽  
pp. 38-45 ◽  
Author(s):  
Massimo Baiardo ◽  
Giovanna Frisoni ◽  
Mariastella Scandola ◽  
Antonino Licciardello
Keyword(s):  
Chemical Modification ◽  
Cellulose Fibers ◽  
Surface Chemical ◽  
Natural Cellulose ◽  
Surface Chemical Modification
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