Tin stearate organometallic precursor prepared SnO2 quantum dots nanopowder for aqueous- and non-aqueous medium photocatalytic hydrogen gas evolution

Choonyian; Haw; Weesiong; Chiu; Noor; Hamizah; Khanis; Saadah; Abdul; Rahman; Poisim; Khiew; Shahidan; Radiman; Roslan; Abd-Shukor; Muhammad; Azmi; Abdul; Hamid

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Tin stearate organometallic precursor prepared SnO2 quantum dots nanopowder for aqueous- and non-aqueous medium photocatalytic hydrogen gas evolution

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Current study reports a rapid one-pot non-hydrolytic condition in the synthesis of Sn O2 QDs nanopowder using tin（II） stearate（Sn（St）2） as environmentally-benign organometallic precursor,which is an unprecedentedly employed-compound in preceding Sn O2 nanopowder productions.The as-synthesized Sn O2 QDs that are hydrophobic can be easily transferred from organic solvent to aqueous solution through a robust ligand exchange method.The stearate-capping ligands on the surface of QDs can be replaced by beta-cyclodextrin（β-CD） and eventually render the QDs highly water soluble,which ultimately make it exhibit bi-functionality for different liquid medium applications.Structural characterizations reveal that the bi-functional QDs are indeed well-matched with the standard rutile Sn O2 cassiterite phase without the presence of any impurities.The QDs can be interchangeably used as photocatalyst for both aqueous and non-aqueous phase,where it shows significant enhancement of hydrogen gas production as compared to that of commercial Sn O2 nanopowder.

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《能源化学：英文版》 |2016年第004期|P.691-701|共11页
作者
Choonyian; Haw; Weesiong; Chiu; Noor; Hamizah; Khanis; Saadah; Abdul; Rahman; Poisim; Khiew; Shahidan; Radiman; Roslan; Abd-Shukor; Muhammad; Azmi; Abdul; Hamid;
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Low Dimensional Materials Research Centre,Department of Physics,University of Malaya;

Department of Chemical Engineering,Faculty of Engineering,University of Nottingham Malaysia Campus,Jalan Broga;

School of Applied Physics,Faculty of Science and Technology,National University of Malaysia;

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Tin stearate organometallic precursor prepared SnO2 quantum dots nanopowder for aqueous- and non-aqueous medium photocatalytic hydrogen gas evolution

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