PMID- 29096250 OWN - NLM STAT- PubMed-not-MEDLINE DCOM- 20180205 LR - 20180205 IS - 1873-3336 (Electronic) IS - 0304-3894 (Linking) VI - 344 DP - 2018 Feb 15 TI - Highly ordered TiO(2) nanotube arrays wrapped with g-C(3)N(4) nanoparticles for efficient charge separation and increased photoelectrocatalytic degradation of phenol. PG - 369-380 LID - S0304-3894(17)30800-2 [pii] LID - 10.1016/j.jhazmat.2017.10.044 [doi] AB - Novel graphitic carbon nitride nanoparticles (NPs)-wrapped TiO(2) nanotube arrays (NTAs) (g-C(3)N(4)/TiO(2)) were fabricated by a two-step method including an electrochemical anodization technique followed by impregnation under vacuum using urea as precursor. The as-prepared photoelectrode exhibited outstanding photoelectric properties and excellent photelectrocatalytic (PEC) performance for the degradation of phenol under stimulated solar light, which was due to the enhanced light absorption property and improved charge separation efficiency. The introduction of g-C(3)N(4) NPs strongly decreased the charge transfer resistance and boosted the charge separation efficiency of TiO(2). The optimum ratio of the g-C(3)N(4)/TiO(2) yielded a pronounced 4.18-fold higher photocurrent density than TiO(2). Besides, the combination of g-C(3)N(4) NPs could negatively shift for the flat band potential of TiO(2), resulting in an enhanced reduction property for the photoelectrocatalytic degradation of organic pollutants. The PEC process for the degradation of phenol over g-C(3)N(4)/TiO(2) was much higher than the sum of photocatalytic (PC) and electrocatalytic (EC) processes indicating that a photoelectric synergy was achieved on the as-prepared photoelectrode and resulting in an improved PEC performance for the composite photoelectrode. CI - Copyright (c) 2017 Elsevier B.V. All rights reserved. FAU - Wang, Huan AU - Wang H AD - School of Chemical Engineering and Technology, Hebei University of Technology, Tianjin, 300130, PR China. FAU - Liang, Yinghua AU - Liang Y AD - School of Chemical Engineering and Technology, Hebei University of Technology, Tianjin, 300130, PR China; College of Chemical Engineering, Hebei Key Laboratory for Environment Photocatalytic and Electrocatalytic Materials, North China University of Science and Technology, Tangshan, Hebei, 063210, PR China. Electronic address: liangyh@ncst.edu.cn. FAU - Liu, Li AU - Liu L AD - College of Chemical Engineering, Hebei Key Laboratory for Environment Photocatalytic and Electrocatalytic Materials, North China University of Science and Technology, Tangshan, Hebei, 063210, PR China. FAU - Hu, Jinshan AU - Hu J AD - College of Chemical Engineering, Hebei Key Laboratory for Environment Photocatalytic and Electrocatalytic Materials, North China University of Science and Technology, Tangshan, Hebei, 063210, PR China. FAU - Cui, Wenquan AU - Cui W AD - College of Chemical Engineering, Hebei Key Laboratory for Environment Photocatalytic and Electrocatalytic Materials, North China University of Science and Technology, Tangshan, Hebei, 063210, PR China. Electronic address: wkcui@163.com. LA - eng PT - Journal Article DEP - 20171024 PL - Netherlands TA - J Hazard Mater JT - Journal of hazardous materials JID - 9422688 OTO - NOTNLM OT - Charge separation efficiency OT - Organic pollutants OT - Photoelectrocatalysis OT - TiO(2) nanotube arrays OT - g-C(3)N(4) nanoparticles EDAT- 2017/11/03 06:00 MHDA- 2017/11/03 06:01 CRDT- 2017/11/03 06:00 PHST- 2017/08/04 00:00 [received] PHST- 2017/10/17 00:00 [revised] PHST- 2017/10/21 00:00 [accepted] PHST- 2017/11/03 06:00 [pubmed] PHST- 2017/11/03 06:01 [medline] PHST- 2017/11/03 06:00 [entrez] AID - S0304-3894(17)30800-2 [pii] AID - 10.1016/j.jhazmat.2017.10.044 [doi] PST - ppublish SO - J Hazard Mater. 2018 Feb 15;344:369-380. doi: 10.1016/j.jhazmat.2017.10.044. Epub 2017 Oct 24.