Novel applications of sub-nanometer noble metal particles for photocatalysis

Shen Zhao; Girish Ramakrishnan; Peichuan Shen; Weiqiang Han; Alexander Orlov

Novel applications of sub-nanometer noble metal particles for photocatalysis

Shen Zhao
, Girish Ramakrishnan
, Peichuan Shen
, Weiqiang Han
, Alexander Orlov

Materials Science and Engineering

Stony Brook University
Brookhaven National Laboratory

Research output: Contribution to journal › Conference article › peer-review

Abstract

We have synthesized several samples containing gold nanoparticles deposited on TiO₂ powders. The size of gold nanoparticles was below 1 nm, a novel size range for photocatalytic applications. These materials exhibited a remarkable photocatalytic activity for both liquid and gas phase oxidation. More specifically, we have observed a significant enhancement of photocatalytic activity for both phenol oxidation in water and NO₂ oxidation in gas phase. The samples and precursors were characterized by both TEM and MALDI -TOF, confirming the presence of gold particles. We also found that the sub-nanometer particles have higher activity than those above 1 nm in size. The intentional sintering of the particles significantly decreased their activity.

Original language	English
Journal	ACS National Meeting Book of Abstracts
State	Published - 2010
Event	240th ACS National Meeting and Exposition - Boston, MA, United States Duration: Aug 22 2010 → Aug 26 2010

Cite this

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title = "Novel applications of sub-nanometer noble metal particles for photocatalysis",

abstract = "We have synthesized several samples containing gold nanoparticles deposited on TiO2 powders. The size of gold nanoparticles was below 1 nm, a novel size range for photocatalytic applications. These materials exhibited a remarkable photocatalytic activity for both liquid and gas phase oxidation. More specifically, we have observed a significant enhancement of photocatalytic activity for both phenol oxidation in water and NO2 oxidation in gas phase. The samples and precursors were characterized by both TEM and MALDI -TOF, confirming the presence of gold particles. We also found that the sub-nanometer particles have higher activity than those above 1 nm in size. The intentional sintering of the particles significantly decreased their activity.",

author = "Shen Zhao and Girish Ramakrishnan and Peichuan Shen and Weiqiang Han and Alexander Orlov",

year = "2010",

language = "English",

journal = "ACS National Meeting Book of Abstracts",

issn = "0065-7727",

note = "240th ACS National Meeting and Exposition ; Conference date: 22-08-2010 Through 26-08-2010",

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TY - JOUR

T1 - Novel applications of sub-nanometer noble metal particles for photocatalysis

AU - Zhao, Shen

AU - Ramakrishnan, Girish

AU - Shen, Peichuan

AU - Han, Weiqiang

AU - Orlov, Alexander

PY - 2010

Y1 - 2010

N2 - We have synthesized several samples containing gold nanoparticles deposited on TiO2 powders. The size of gold nanoparticles was below 1 nm, a novel size range for photocatalytic applications. These materials exhibited a remarkable photocatalytic activity for both liquid and gas phase oxidation. More specifically, we have observed a significant enhancement of photocatalytic activity for both phenol oxidation in water and NO2 oxidation in gas phase. The samples and precursors were characterized by both TEM and MALDI -TOF, confirming the presence of gold particles. We also found that the sub-nanometer particles have higher activity than those above 1 nm in size. The intentional sintering of the particles significantly decreased their activity.

AB - We have synthesized several samples containing gold nanoparticles deposited on TiO2 powders. The size of gold nanoparticles was below 1 nm, a novel size range for photocatalytic applications. These materials exhibited a remarkable photocatalytic activity for both liquid and gas phase oxidation. More specifically, we have observed a significant enhancement of photocatalytic activity for both phenol oxidation in water and NO2 oxidation in gas phase. The samples and precursors were characterized by both TEM and MALDI -TOF, confirming the presence of gold particles. We also found that the sub-nanometer particles have higher activity than those above 1 nm in size. The intentional sintering of the particles significantly decreased their activity.

UR - https://www.scopus.com/pages/publications/79951481816

M3 - Conference article

AN - SCOPUS:79951481816

SN - 0065-7727

JO - ACS National Meeting Book of Abstracts

JF - ACS National Meeting Book of Abstracts

T2 - 240th ACS National Meeting and Exposition

Y2 - 22 August 2010 through 26 August 2010

ER -

Novel applications of sub-nanometer noble metal particles for photocatalysis

Abstract

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