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

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

Current study reports a rapid one-pot non-hydrolytic condition in the synthesis of SnO2 QDs nanopowder using tin (II) stearate (Sn(St)2) as environmentally-benign organometallic precursor, which is an unprecedentedly employed-compound in preceding SnO2 nanopowder productions. The as-synthesized SnO2 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 SnO2 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 SnO2 nanopowder.

Original languageEnglish
JournalJournal of Energy Chemistry
DOIs
Publication statusAccepted/In press - 26 Dec 2015

Fingerprint

Stearates
Tin
Organometallics
Semiconductor quantum dots
Hydrogen
Gases
Ligands
Cyclodextrins
Photocatalysts
Organic solvents
Ion exchange
Impurities
Water
Liquids
betadex
titanium dioxide

Keywords

  • Hydrogen gas production
  • Ligand exchange
  • Photocatalyst
  • Precursors
  • SnO
  • Tinstearate

ASJC Scopus subject areas

  • Energy Engineering and Power Technology
  • Energy (miscellaneous)
  • Fuel Technology
  • Electrochemistry

Cite this

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title = "Tin stearate organometallic precursor prepared SnO2 quantum dots nanopowder for aqueous- and non-aqueous medium photocatalytic hydrogen gas evolution",
abstract = "Current study reports a rapid one-pot non-hydrolytic condition in the synthesis of SnO2 QDs nanopowder using tin (II) stearate (Sn(St)2) as environmentally-benign organometallic precursor, which is an unprecedentedly employed-compound in preceding SnO2 nanopowder productions. The as-synthesized SnO2 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 SnO2 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 SnO2 nanopowder.",
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author = "Choonyian Haw and Weesiong Chiu and Khanis, {Noor Hamizah} and {Abdul Rahman}, Saadah and Poisim Khiew and Shahidan Radiman and {Abd. Shukor}, Roslan and {Abdul Hamid}, {Muhammad Azmi}",
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T1 - Tin stearate organometallic precursor prepared SnO2 quantum dots nanopowder for aqueous- and non-aqueous medium photocatalytic hydrogen gas evolution

AU - Haw, Choonyian

AU - Chiu, Weesiong

AU - Khanis, Noor Hamizah

AU - Abdul Rahman, Saadah

AU - Khiew, Poisim

AU - Radiman, Shahidan

AU - Abd. Shukor, Roslan

AU - Abdul Hamid, Muhammad Azmi

PY - 2015/12/26

Y1 - 2015/12/26

N2 - Current study reports a rapid one-pot non-hydrolytic condition in the synthesis of SnO2 QDs nanopowder using tin (II) stearate (Sn(St)2) as environmentally-benign organometallic precursor, which is an unprecedentedly employed-compound in preceding SnO2 nanopowder productions. The as-synthesized SnO2 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 SnO2 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 SnO2 nanopowder.

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