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LaPO4 nanorods synthesized by hydrothermal method were applied as a novel catalyst for photocatalytic reduction of CO2 with H2O under mild conditions (20 degrees C and 1 atm CO2). The prepared LaPO4 nanorods exhibited relatively negative E-CB of -0.63 V vs. NHE pH 7 and superior CO2 adsorption capability of 16.3 mg g(-1). The yield rate of the main reduction products, CH4 and H-2, were 0.11 and 0.08 mu mol/h, respectively. The deposition of Pt cocatalyst improved the photocatalytic performance and enhanced the selectivity of CO2 conversion to CH4 production. The highest photocatalytic efficiency was observed over LaPO4-1 wt%Pt, with an apparent quantum yield (AQY) enhanced by 5 times as compared to bare LaPO4, and the selectivity for CH4 production reached 100% at 3 wt%Pt loading. A possible mechanism of photocatalytic CO2 reduction over LaPO4 and LaPO4-Pt was proposed that the Pt cocatalyst functioned as an excellent electron transfer mediator and adsorber for CO2. (C) 2015 Elsevier B.V. All rights reserved.
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APPLIED CATALYSIS B-ENVIRONMENTAL
ISSN: 0926-3373
Year: 2015
Volume: 168
Page: 458-464
8 . 3 2 8
JCR@2015
2 0 . 3 0 0
JCR@2023
ESI Discipline: CHEMISTRY;
ESI HC Threshold:265
JCR Journal Grade:1
CAS Journal Grade:1
Cited Count:
WoS CC Cited Count: 109
SCOPUS Cited Count: 115
ESI Highly Cited Papers on the List: 0 Unfold All
WanFang Cited Count:
Chinese Cited Count:
30 Days PV: 0
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