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Title: Enhanced hydrogen evolution rates at high pH with a colloidal cadmium sulphide–platinum hybrid system

We demonstrate enhanced hydrogen generation rates at high pH using colloidal cadmium sulphide nanorods decorated with Pt nanoparticles. We introduce a simplified procedure for the decoration and subsequent hydrogen generation, reducing both the number of working steps and the materials costs. Different Pt precursor concentrations were tested to reveal the optimal conditions for the efficient hydrogen evolution. A sharp increase in hydrogen evolution rates was measured at pH 13 and above, a condition at which the surface charge transfer was efficiently mediated by the formation of hydroxyl radicals and further consumption by the sacrificial triethanolamine hole scavenger.
Authors:
; ; ;  [1] ; ;  [2]
  1. Department of Physics and Materials Science and Centre for Functional Photonics (CFP), City University of Hong Kong, 83 Tat Chee Avenue, Kowloon (Hong Kong)
  2. Clean Energy and Nanotechnology (CLEAN) Laboratory, School of Energy and Environment, City University of Hong Kong, 83 Tat Chee Avenue, Kowloon (Hong Kong)
Publication Date:
OSTI Identifier:
22415233
Resource Type:
Journal Article
Resource Relation:
Journal Name: APL materials; Journal Volume: 2; Journal Issue: 12; Other Information: (c) 2014 Author(s); Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; CADMIUM SULFIDES; COLLOIDS; CONCENTRATION RATIO; HOLES; HYDROGEN; HYDROXYL RADICALS; INTERSTITIAL HYDROGEN GENERATION; NANOPARTICLES; NANOSTRUCTURES; PH VALUE; PLATINUM; PRECURSOR; SURFACES