Photocatalytic Hydrogen Generation by CdSe/CdS Nanoparticles
- 4 August 2016
- journal article
- research article
- Published by American Chemical Society (ACS) in Nano Letters
- Vol. 16 (9), 5347-5352
- https://doi.org/10.1021/acs.nanolett.6b01087
Abstract
The hydrogen (H2) production activity of various CdSe semiconductor nanoparticles, including CdSe and CdSe/CdS quantum dots (QDs), CdSe quantum rods (QRs), and CdSe/CdS dot-in-rods (DIRs), was compared in a photocatalytic system with a molecular Ni2+ catalyst. With equivalent photons absorbed, the H2 generation activity orders as: CdSe QDs >> CdSe QRs > CdSe/CdS QDs > CdSe/CdS DIRs, which is surprisingly the opposite of the electron-hole separation efficiency. Calculations of photoexcited surface charge densities are positively correlated with the H2 production rate and suggest the size of the nanoparticle plays a critical role in determining the relative efficiency of H2 production.Keywords
Funding Information
- Basic Energy Sciences (DE-FG02-09ER16121)
This publication has 38 references indexed in Scilit:
- Robust Photogeneration of H 2 in Water Using Semiconductor Nanocrystals and a Nickel CatalystScience, 2012
- Photodriven Charge Separation Dynamics in CdSe/ZnS Core/Shell Quantum Dot/Cobaloxime Hybrid for Efficient Hydrogen ProductionJournal of the American Chemical Society, 2012
- Near Unity Quantum Yield of Light-Driven Redox Mediator Reduction and Efficient H2 Generation Using Colloidal Nanorod HeterostructuresJournal of the American Chemical Society, 2012
- Structural and Electronic Study of an Amorphous MoS3 Hydrogen‐Generation Catalyst on a Quantum‐Controlled PhotosensitizerAngewandte Chemie-International Edition, 2011
- The Role of Hole Localization in Sacrificial Hydrogen Production by Semiconductor–Metal Heterostructured NanocrystalsNano Letters, 2011
- Semiconductor-based Photocatalytic Hydrogen GenerationChemical Reviews, 2010
- Photocatalytic Hydrogen Production with Tunable Nanorod HeterostructuresThe Journal of Physical Chemistry Letters, 2010
- Chemistry of Personalized Solar EnergyInorganic Chemistry, 2009
- Powering the planet: Chemical challenges in solar energy utilizationProceedings of the National Academy of Sciences, 2006
- Artificial photosynthesis: water cleavage into hydrogen and oxygen by visible lightAccounts of Chemical Research, 1981