Graphene-oxide photocatalysts for water splitting and its upconverted photoluminescence

Te Fu Yeh, Hsisheng Teng

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Graphene oxide (GO) is a p-type semiconductor with a suitable band positions for photocatalytic watersplitting. GO sheets have a hydrophilic 2D carbon structure that allows for extensive chemical modification. This study presents strategies of tuning the conductivity type of GO from p-type to n-type for simultaneous evolutions of H2 and O2 under visible light irradiation. Further converting the n-type graphene oxide sheets to quantum dots results in stoichiometric evolution of H2 and O2 at 2-to-1 ratio. The quantum dots also serve as an energy-converting medium with upconverted photoluminescence to promote the activity of metal-oxide photocatalyts.

Original languageEnglish
Title of host publicationNanoscale Science and Engineering Forum 2013 - Core Programming Area at the 2013 AIChE Annual Meeting
Subtitle of host publicationGlobal Challenges for Engineering a Sustainable Future
PublisherAIChE
Pages264-266
Number of pages3
ISBN (Electronic)9781634390477
Publication statusPublished - 2014 Jan 1
EventNanoscale Science and Engineering Forum 2013 - Core Programming Area at the 2013 AIChE Annual Meeting: Global Challenges for Engineering a Sustainable Future - San Francisco, United States
Duration: 2013 Nov 32013 Nov 8

Publication series

NameNanoscale Science and Engineering Forum 2013 - Core Programming Area at the 2013 AIChE Annual Meeting: Global Challenges for Engineering a Sustainable Future

Other

OtherNanoscale Science and Engineering Forum 2013 - Core Programming Area at the 2013 AIChE Annual Meeting: Global Challenges for Engineering a Sustainable Future
CountryUnited States
CitySan Francisco
Period13-11-0313-11-08

Fingerprint

Graphite
Photocatalysts
Oxides
Graphene
Photoluminescence
Water
Semiconductor quantum dots
Chemical modification
Carbon
Tuning
Metals
Irradiation
Semiconductor materials

All Science Journal Classification (ASJC) codes

  • Engineering(all)
  • Environmental Engineering
  • Chemical Engineering(all)
  • Materials Chemistry

Cite this

Yeh, T. F., & Teng, H. (2014). Graphene-oxide photocatalysts for water splitting and its upconverted photoluminescence. In Nanoscale Science and Engineering Forum 2013 - Core Programming Area at the 2013 AIChE Annual Meeting: Global Challenges for Engineering a Sustainable Future (pp. 264-266). (Nanoscale Science and Engineering Forum 2013 - Core Programming Area at the 2013 AIChE Annual Meeting: Global Challenges for Engineering a Sustainable Future). AIChE.
Yeh, Te Fu ; Teng, Hsisheng. / Graphene-oxide photocatalysts for water splitting and its upconverted photoluminescence. Nanoscale Science and Engineering Forum 2013 - Core Programming Area at the 2013 AIChE Annual Meeting: Global Challenges for Engineering a Sustainable Future. AIChE, 2014. pp. 264-266 (Nanoscale Science and Engineering Forum 2013 - Core Programming Area at the 2013 AIChE Annual Meeting: Global Challenges for Engineering a Sustainable Future).
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abstract = "Graphene oxide (GO) is a p-type semiconductor with a suitable band positions for photocatalytic watersplitting. GO sheets have a hydrophilic 2D carbon structure that allows for extensive chemical modification. This study presents strategies of tuning the conductivity type of GO from p-type to n-type for simultaneous evolutions of H2 and O2 under visible light irradiation. Further converting the n-type graphene oxide sheets to quantum dots results in stoichiometric evolution of H2 and O2 at 2-to-1 ratio. The quantum dots also serve as an energy-converting medium with upconverted photoluminescence to promote the activity of metal-oxide photocatalyts.",
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Yeh, TF & Teng, H 2014, Graphene-oxide photocatalysts for water splitting and its upconverted photoluminescence. in Nanoscale Science and Engineering Forum 2013 - Core Programming Area at the 2013 AIChE Annual Meeting: Global Challenges for Engineering a Sustainable Future. Nanoscale Science and Engineering Forum 2013 - Core Programming Area at the 2013 AIChE Annual Meeting: Global Challenges for Engineering a Sustainable Future, AIChE, pp. 264-266, Nanoscale Science and Engineering Forum 2013 - Core Programming Area at the 2013 AIChE Annual Meeting: Global Challenges for Engineering a Sustainable Future, San Francisco, United States, 13-11-03.

Graphene-oxide photocatalysts for water splitting and its upconverted photoluminescence. / Yeh, Te Fu; Teng, Hsisheng.

Nanoscale Science and Engineering Forum 2013 - Core Programming Area at the 2013 AIChE Annual Meeting: Global Challenges for Engineering a Sustainable Future. AIChE, 2014. p. 264-266 (Nanoscale Science and Engineering Forum 2013 - Core Programming Area at the 2013 AIChE Annual Meeting: Global Challenges for Engineering a Sustainable Future).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

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Yeh TF, Teng H. Graphene-oxide photocatalysts for water splitting and its upconverted photoluminescence. In Nanoscale Science and Engineering Forum 2013 - Core Programming Area at the 2013 AIChE Annual Meeting: Global Challenges for Engineering a Sustainable Future. AIChE. 2014. p. 264-266. (Nanoscale Science and Engineering Forum 2013 - Core Programming Area at the 2013 AIChE Annual Meeting: Global Challenges for Engineering a Sustainable Future).