In-situ growth of CdS quantum dots on g-C3N4 nanosheets for highly efficient photocatalytic hydrogen generation under visible light irradiation
Mohammad Mehdi Shahjamali
Boey, Freddy Yin Chiang
Loo, Say Chye Joachim
Date of Issue2012
School of Materials Science and Engineering
Well dispersed CdS quantum dots were successfully grown in-situ on g-C3N4 nanosheets through a solvothermal method involving dimethyl sulfoxide. The resultant CdSeC3N4 nanocomposites exhibit remarkably higher efficiency for photocatalytic hydrogen evolution under visible light irradiation as compared to pure g-C3N4. The optimal composite with 12 wt% CdS showed a hydrogen evolution rate of 4.494 mmol h 1 g 1 , which is more than 115 times higher than that of pure g-C3N4. The enhanced photocatalytic activity induced by the in-situ grown CdS quantum dots is attributed to the interfacial transfer of photogenerated electrons and holes between g-C3N4 and CdS, which leads to effective charge separation on both parts.
DRNTU::Science::Chemistry::Physical chemistry::Quantum chemistry
International journal of hydrogen energy
© 2012 Hydrogen Energy Publications, LLC. This is the author created version of a work that has been peer reviewed and accepted for publication in International Journal of Hydrogen Energy, published by Elsevier on behalf of Hydrogen Energy Publications, LLC. It incorporates referee’s comments but changes resulting from the publishing process, such as copyediting, structural formatting, may not be reflected in this document. The published version is available at: [http://dx.doi.org/10.1016/j.ijhydene.2012.10.116].