PMID- 34332490
OWN - NLM
STAT- PubMed-not-MEDLINE
LR  - 20211019
IS  - 1873-3336 (Electronic)
IS  - 0304-3894 (Linking)
VI  - 421
DP  - 2022 Jan 5
TI  - Piezoelectric polarization promoted spatial separation of photoexcited electrons 
      and holes in two-dimensional g-C(3)N(4) nanosheets for efficient elimination of 
      chlorophenols.
PG  - 126696
LID - S0304-3894(21)01661-7 [pii]
LID - 10.1016/j.jhazmat.2021.126696 [doi]
AB  - Graphitic carbon nitride (g-C(3)N(4)) has been proved to be a potential 
      photocatalyst for environment purification, but the high recombination rate of 
      photogenerated carriers leads to the low photocatalytic efficiency. Herein, we 
      report the enhanced degradation of chlorophenols by 2D ultrathin g-C(3)N(4) 
      nanosheets with intrinsic piezoelectricity through photopiezocatalysis strategy. 
      Under the simultaneous visible-light irradiation and ultrasonic vibration, the 2D 
      g-C(3)N(4) presented improved removal efficiency for elimination of 
      2,4-dichlorophenol (2,4-DCP) with an apparent rate constant of 6.65 x 10(-2) 
      min(-1), which was 6.7 and 2.2 times of the photocatalysis and piezocatalysis, 
      respectively. The improved removal efficiency was attributed to the sufficient 
      separation of free charges driven by the ultrasound-induced piezoelectric field 
      in the 2D g-C(3)N(4), which was demonstrated by the enhanced current response 
      under photopiezocatalysis mode. Additionally, the photopiezocatalysis of 2D 
      g-C(3)N(4) was proved to possess well universality for removing different 
      chlorophenols, as well as high durability and dechlorination efficiency. Finally, 
      a possible photopiezocatalytic mechanism for removal of 2,4-DCP was proposed 
      based on the electron paramagnetic resonance (EPR) technique and the 
      determination of intermediates through liquid chromatography-mass spectrometry 
      (LC-MS) analysis. This work provides a promising strategy for the design of 
      energy-conversion materials towards capturing solar and mechanical energy in 
      ambient environment.
CI  - Copyright (c) 2021 Elsevier B.V. All rights reserved.
FAU - Lei, Hua
AU  - Lei H
AD  - Department of Chemistry, Key Laboratory of Surface & Interface Science of Polymer 
      Materials of Zhejiang Province, Zhejiang Sci-Tech University, Hangzhou 310018, 
      China.
FAU - He, Qingshen
AU  - He Q
AD  - Department of Chemistry, Key Laboratory of Surface & Interface Science of Polymer 
      Materials of Zhejiang Province, Zhejiang Sci-Tech University, Hangzhou 310018, 
      China.
FAU - Wu, Meixuan
AU  - Wu M
AD  - Department of Chemistry, Key Laboratory of Surface & Interface Science of Polymer 
      Materials of Zhejiang Province, Zhejiang Sci-Tech University, Hangzhou 310018, 
      China.
FAU - Xu, Yingying
AU  - Xu Y
AD  - Department of Chemistry, Key Laboratory of Surface & Interface Science of Polymer 
      Materials of Zhejiang Province, Zhejiang Sci-Tech University, Hangzhou 310018, 
      China.
FAU - Sun, Pengfei
AU  - Sun P
AD  - Department of Chemistry, Key Laboratory of Surface & Interface Science of Polymer 
      Materials of Zhejiang Province, Zhejiang Sci-Tech University, Hangzhou 310018, 
      China. Electronic address: sunpf@zju.edu.cn.
FAU - Dong, Xiaoping
AU  - Dong X
AD  - Department of Chemistry, Key Laboratory of Surface & Interface Science of Polymer 
      Materials of Zhejiang Province, Zhejiang Sci-Tech University, Hangzhou 310018, 
      China. Electronic address: xpdong@zstu.edu.cn.
LA  - eng
PT  - Journal Article
DEP - 20210722
PL  - Netherlands
TA  - J Hazard Mater
JT  - Journal of hazardous materials
JID - 9422688
SB  - IM
OTO - NOTNLM
OT  - 2D g-C(3)N(4)
OT  - Chlorophenols degradation
OT  - Photopiezocatalysis
OT  - Piezoelectricity
EDAT- 2021/08/01 06:00
MHDA- 2021/08/01 06:01
CRDT- 2021/07/31 20:30
PHST- 2021/04/29 00:00 [received]
PHST- 2021/06/23 00:00 [revised]
PHST- 2021/07/18 00:00 [accepted]
PHST- 2021/08/01 06:00 [pubmed]
PHST- 2021/08/01 06:01 [medline]
PHST- 2021/07/31 20:30 [entrez]
AID - S0304-3894(21)01661-7 [pii]
AID - 10.1016/j.jhazmat.2021.126696 [doi]
PST - ppublish
SO  - J Hazard Mater. 2022 Jan 5;421:126696. doi: 10.1016/j.jhazmat.2021.126696. Epub 
      2021 Jul 22.