PMID- 27993053 OWN - NLM STAT- MEDLINE DCOM- 20170608 LR - 20180724 IS - 1520-5851 (Electronic) IS - 0013-936X (Linking) VI - 50 IP - 24 DP - 2016 Dec 20 TI - Exceptional Visible-Light Activities of TiO(2)-Coupled N-Doped Porous Perovskite LaFeO(3) for 2,4-Dichlorophenol Decomposition and CO(2) Conversion. PG - 13600-13610 AB - In this work, TiO(2)-coupled N-doped porous perovskite-type LaFeO(3) nanocomposites as highly efficient, cheap, stable, and visible-light photocatalysts have successfully been prepared via wet chemical processes. It is shown that the amount-optimized nanocomposite exhibits exceptional visible-light photocatalytic activities for 2,4-dichlorophenol (2,4-DCP) degradation by approximately 3-time enhancement and for CO(2) conversion to fuels by approximately 4-time enhancement, compared to the resulting porous LaFeO(3) with rather high photoactivity due to its large surface area. It is clearly demonstrated, by means of various experimental data, especially for the .OH amount evaluation, that the obviously enhanced photoactivities are attributed to the increased specific surface area by introducing pores, to the extended visible-light absorption by doping N to create surface states, and to the promoted charge transfer and separation by coupling TiO(2). Moreover, it is confirmed from radical trapping experiments that the photogenerated holes are the predominant oxidants in the photocatalytic degradation of 2,4-DCP. Furthermore, a possible photocatalytic degradation mechanism for 2,4-DCP is proposed mainly based on the resultant crucial intermediate, 2-chlorosuccinic acid with m/z = 153, that readily transform into CO(2) and H(2)O. This work opens up a new feasible route to synthesize visible-light-responsive high-activity perovskite-type nanophotocatalysts for efficient environmental remediation and energy production. FAU - Humayun, Muhammad AU - Humayun M AD - Key Laboratory of Functional Inorganic Materials Chemistry, Heilongjiang University , Ministry of Education, School of Chemistry and Materials Science, International Joint Research Center for Catalytic Technology, Harbin 150080, P. R. China. FAU - Qu, Yang AU - Qu Y AD - Key Laboratory of Functional Inorganic Materials Chemistry, Heilongjiang University , Ministry of Education, School of Chemistry and Materials Science, International Joint Research Center for Catalytic Technology, Harbin 150080, P. R. China. FAU - Raziq, Fazal AU - Raziq F AD - Key Laboratory of Functional Inorganic Materials Chemistry, Heilongjiang University , Ministry of Education, School of Chemistry and Materials Science, International Joint Research Center for Catalytic Technology, Harbin 150080, P. R. China. FAU - Yan, Rui AU - Yan R AD - Key Laboratory of Functional Inorganic Materials Chemistry, Heilongjiang University , Ministry of Education, School of Chemistry and Materials Science, International Joint Research Center for Catalytic Technology, Harbin 150080, P. R. China. FAU - Li, Zhijun AU - Li Z AD - Key Laboratory of Functional Inorganic Materials Chemistry, Heilongjiang University , Ministry of Education, School of Chemistry and Materials Science, International Joint Research Center for Catalytic Technology, Harbin 150080, P. R. China. FAU - Zhang, Xuliang AU - Zhang X AD - Key Laboratory of Functional Inorganic Materials Chemistry, Heilongjiang University , Ministry of Education, School of Chemistry and Materials Science, International Joint Research Center for Catalytic Technology, Harbin 150080, P. R. China. FAU - Jing, Liqiang AU - Jing L AUID- ORCID: 0000-0002-3189-492X AD - Key Laboratory of Functional Inorganic Materials Chemistry, Heilongjiang University , Ministry of Education, School of Chemistry and Materials Science, International Joint Research Center for Catalytic Technology, Harbin 150080, P. R. China. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20161207 PL - United States TA - Environ Sci Technol JT - Environmental science & technology JID - 0213155 SB - IM MH - Catalysis MH - *Light MH - Nanocomposites/*chemistry MH - Porosity EDAT- 2016/12/21 06:00 MHDA- 2017/06/09 06:00 CRDT- 2016/12/21 06:00 PHST- 2016/12/21 06:00 [entrez] PHST- 2016/12/21 06:00 [pubmed] PHST- 2017/06/09 06:00 [medline] AID - 10.1021/acs.est.6b04958 [doi] PST - ppublish SO - Environ Sci Technol. 2016 Dec 20;50(24):13600-13610. doi: 10.1021/acs.est.6b04958. Epub 2016 Dec 7.