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Title: Photoinduced charge property of nanosized perovskite-type LaFeO{sub 3} and its relationships with photocatalytic activity under visible irradiation

Abstract

In this paper, ABO{sub 3}-type perovskite LaFeO{sub 3} nanosized photocatalysts were synthesized by a sol-gel method, using citric acid (HOOCCH{sub 2}C(OH)(COOH)CH{sub 2}COOH) as complexing reagent and La(NO{sub 3}){sub 3}.6H{sub 2}O and Fe (NO{sub 3}){sub 3}.9H{sub 2}O as raw materials. The as-prepared samples also were characterized by several testing techniques, such as thermogravimetry-differential thermal analysis (TG-DTA), X-ray powder diffraction (XRD), Brunauer-Emmett-Teller (BET), infrared spectrum (IR), ultraviolet-visible diffuse reflection spectrum (UV-vis DRS), photoluminescence spectrum (PL), surface photovoltage spectroscopy (SPS) and electrical field induced surface photovoltage spectroscopy (EFISPS). The sample activity of different LaFeO{sub 3} nanoparticles for degrading Rhodamine B solution under visible irradiation ({lambda} > 400 nm) was evaluated. The effects of thermal treatment temperature on photoinduced charge property and photocatalytic activity were mainly investigated, together with their relationships. The results show that the LaFeO{sub 3} sample calcined at 500 deg. C exhibits higher activity, and the activity decreases with increasing calcination temperature, which is in good agreement with the characterization results. The weaker is the PL and SPS signal, the higher is the photocatalytic activity. Moreover, the activity of all as-prepared LaFeO{sub 3} samples is higher than that of international P-25 TiO{sub 2} under visible irradiation.

Authors:
 [1];  [2];  [1];  [1];  [1];  [1]
  1. Laboratory of Physical Chemistry, School of Chemistry and Materials Science, Heilongjiang University, Harbin 150080 (China)
  2. Laboratory of Physical Chemistry, School of Chemistry and Materials Science, Heilongjiang University, Harbin 150080 (China). E-mail: JLQiang@sohu.com
Publication Date:
OSTI Identifier:
21000584
Resource Type:
Journal Article
Resource Relation:
Journal Name: Materials Research Bulletin; Journal Volume: 42; Journal Issue: 2; Other Information: DOI: 10.1016/j.materresbull.2006.06.010; PII: S0025-5408(06)00251-0; Copyright (c) 2006 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; CALCINATION; DIFFERENTIAL THERMAL ANALYSIS; ELECTRIC FIELDS; HEAT TREATMENTS; INFRARED SPECTRA; IRRADIATION; NANOSTRUCTURES; NITRATES; NITROGEN OXIDES; PEROVSKITE; PHOTOCATALYSIS; PHOTOLUMINESCENCE; RAW MATERIALS; SOL-GEL PROCESS; SPECTROSCOPY; THERMAL GRAVIMETRIC ANALYSIS; TITANIUM OXIDES; ULTRAVIOLET RADIATION; X-RAY DIFFRACTION

Citation Formats

Li Shudan, Jing Liqiang, Fu Wei, Yang Libin, Xin Baifu, and Fu Honggang. Photoinduced charge property of nanosized perovskite-type LaFeO{sub 3} and its relationships with photocatalytic activity under visible irradiation. United States: N. p., 2007. Web.
Li Shudan, Jing Liqiang, Fu Wei, Yang Libin, Xin Baifu, & Fu Honggang. Photoinduced charge property of nanosized perovskite-type LaFeO{sub 3} and its relationships with photocatalytic activity under visible irradiation. United States.
Li Shudan, Jing Liqiang, Fu Wei, Yang Libin, Xin Baifu, and Fu Honggang. Thu . "Photoinduced charge property of nanosized perovskite-type LaFeO{sub 3} and its relationships with photocatalytic activity under visible irradiation". United States. doi:.
@article{osti_21000584,
title = {Photoinduced charge property of nanosized perovskite-type LaFeO{sub 3} and its relationships with photocatalytic activity under visible irradiation},
author = {Li Shudan and Jing Liqiang and Fu Wei and Yang Libin and Xin Baifu and Fu Honggang},
abstractNote = {In this paper, ABO{sub 3}-type perovskite LaFeO{sub 3} nanosized photocatalysts were synthesized by a sol-gel method, using citric acid (HOOCCH{sub 2}C(OH)(COOH)CH{sub 2}COOH) as complexing reagent and La(NO{sub 3}){sub 3}.6H{sub 2}O and Fe (NO{sub 3}){sub 3}.9H{sub 2}O as raw materials. The as-prepared samples also were characterized by several testing techniques, such as thermogravimetry-differential thermal analysis (TG-DTA), X-ray powder diffraction (XRD), Brunauer-Emmett-Teller (BET), infrared spectrum (IR), ultraviolet-visible diffuse reflection spectrum (UV-vis DRS), photoluminescence spectrum (PL), surface photovoltage spectroscopy (SPS) and electrical field induced surface photovoltage spectroscopy (EFISPS). The sample activity of different LaFeO{sub 3} nanoparticles for degrading Rhodamine B solution under visible irradiation ({lambda} > 400 nm) was evaluated. The effects of thermal treatment temperature on photoinduced charge property and photocatalytic activity were mainly investigated, together with their relationships. The results show that the LaFeO{sub 3} sample calcined at 500 deg. C exhibits higher activity, and the activity decreases with increasing calcination temperature, which is in good agreement with the characterization results. The weaker is the PL and SPS signal, the higher is the photocatalytic activity. Moreover, the activity of all as-prepared LaFeO{sub 3} samples is higher than that of international P-25 TiO{sub 2} under visible irradiation.},
doi = {},
journal = {Materials Research Bulletin},
number = 2,
volume = 42,
place = {United States},
year = {Thu Feb 15 00:00:00 EST 2007},
month = {Thu Feb 15 00:00:00 EST 2007}
}
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