TiO 2 nanorod arrays decorated with exfoliated WS 2 nanosheets for enhanced photoelectrochemical water oxidation

Yuxi Pi; Bo Liu; Zhen Li; Yukun Zhu; Yang Li; Fengbao Zhang; Guoliang Zhang; Wenchao Peng; Xiaobin Fan

doi:10.1016/j.jcis.2019.03.041

TiO 2 nanorod arrays decorated with exfoliated WS 2 nanosheets for enhanced photoelectrochemical water oxidation

Yuxi Pi, Bo Liu, Zhen Li, Yukun Zhu, Yang Li, Fengbao Zhang, Guoliang Zhang, Wenchao Peng, Xiaobin Fan

Research output: Contribution to journal › Article › peer-review

16 Scopus citations

Abstract

A novel three-dimensional (3D) photoanode consisting of TiO 2 nanorod arrays (TiO 2 NAs) coated by exfoliated WS 2 nanosheets was fabricated for enhanced photoelectrochemical water oxidation. Mixed phase WS 2 nanosheets with 1 T percentage of 55% were exfoliated by the lithium insertion, which were then coated on the top of TiO 2 NAs by a drop-casting method. By optimizing the loading amount of WS 2 , a maximum photocurrent of ∼1.8 mA/cm 2 could be obtained at +1.8 V vs. RHE under AM 1.5 irradiation (100 mW/cm 2 ), which is 2.3 times higher compared to the pure TiO 2 NAs (0.8 mA/cm 2 ). The enhanced photo-activity should be attributed to the presence of the mixed phase WS 2 nanosheets, which have excellent charge transport ability and can accept photogenerated holes for water oxidation.

Original language	English (US)
Pages (from-to)	282-288
Number of pages	7
Journal	Journal of Colloid and Interface Science
Volume	545
DOIs	https://doi.org/10.1016/j.jcis.2019.03.041
State	Published - Jun 1 2019
Externally published	Yes

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@article{c0c721c185c14bafbc53e205ac24bda1,

title = "TiO 2 nanorod arrays decorated with exfoliated WS 2 nanosheets for enhanced photoelectrochemical water oxidation",

abstract = "A novel three-dimensional (3D) photoanode consisting of TiO 2 nanorod arrays (TiO 2 NAs) coated by exfoliated WS 2 nanosheets was fabricated for enhanced photoelectrochemical water oxidation. Mixed phase WS 2 nanosheets with 1 T percentage of 55% were exfoliated by the lithium insertion, which were then coated on the top of TiO 2 NAs by a drop-casting method. By optimizing the loading amount of WS 2 , a maximum photocurrent of ∼1.8 mA/cm 2 could be obtained at +1.8 V vs. RHE under AM 1.5 irradiation (100 mW/cm 2 ), which is 2.3 times higher compared to the pure TiO 2 NAs (0.8 mA/cm 2 ). The enhanced photo-activity should be attributed to the presence of the mixed phase WS 2 nanosheets, which have excellent charge transport ability and can accept photogenerated holes for water oxidation.",

author = "Yuxi Pi and Bo Liu and Zhen Li and Yukun Zhu and Yang Li and Fengbao Zhang and Guoliang Zhang and Wenchao Peng and Xiaobin Fan",

note = "Generated from Scopus record by KAUST IRTS on 2023-09-20",

year = "2019",

month = jun,

day = "1",

doi = "10.1016/j.jcis.2019.03.041",

language = "English (US)",

volume = "545",

pages = "282--288",

journal = "Journal of Colloid and Interface Science",

issn = "1095-7103",

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TY - JOUR

T1 - TiO 2 nanorod arrays decorated with exfoliated WS 2 nanosheets for enhanced photoelectrochemical water oxidation

AU - Pi, Yuxi

AU - Liu, Bo

AU - Li, Zhen

AU - Zhu, Yukun

AU - Li, Yang

AU - Zhang, Fengbao

AU - Zhang, Guoliang

AU - Peng, Wenchao

AU - Fan, Xiaobin

N1 - Generated from Scopus record by KAUST IRTS on 2023-09-20

PY - 2019/6/1

Y1 - 2019/6/1

N2 - A novel three-dimensional (3D) photoanode consisting of TiO 2 nanorod arrays (TiO 2 NAs) coated by exfoliated WS 2 nanosheets was fabricated for enhanced photoelectrochemical water oxidation. Mixed phase WS 2 nanosheets with 1 T percentage of 55% were exfoliated by the lithium insertion, which were then coated on the top of TiO 2 NAs by a drop-casting method. By optimizing the loading amount of WS 2 , a maximum photocurrent of ∼1.8 mA/cm 2 could be obtained at +1.8 V vs. RHE under AM 1.5 irradiation (100 mW/cm 2 ), which is 2.3 times higher compared to the pure TiO 2 NAs (0.8 mA/cm 2 ). The enhanced photo-activity should be attributed to the presence of the mixed phase WS 2 nanosheets, which have excellent charge transport ability and can accept photogenerated holes for water oxidation.

AB - A novel three-dimensional (3D) photoanode consisting of TiO 2 nanorod arrays (TiO 2 NAs) coated by exfoliated WS 2 nanosheets was fabricated for enhanced photoelectrochemical water oxidation. Mixed phase WS 2 nanosheets with 1 T percentage of 55% were exfoliated by the lithium insertion, which were then coated on the top of TiO 2 NAs by a drop-casting method. By optimizing the loading amount of WS 2 , a maximum photocurrent of ∼1.8 mA/cm 2 could be obtained at +1.8 V vs. RHE under AM 1.5 irradiation (100 mW/cm 2 ), which is 2.3 times higher compared to the pure TiO 2 NAs (0.8 mA/cm 2 ). The enhanced photo-activity should be attributed to the presence of the mixed phase WS 2 nanosheets, which have excellent charge transport ability and can accept photogenerated holes for water oxidation.

UR - https://linkinghub.elsevier.com/retrieve/pii/S0021979719303303

UR - http://www.scopus.com/inward/record.url?scp=85062942219&partnerID=8YFLogxK

U2 - 10.1016/j.jcis.2019.03.041

DO - 10.1016/j.jcis.2019.03.041

M3 - Article

SN - 1095-7103

VL - 545

SP - 282

EP - 288

JO - Journal of Colloid and Interface Science

JF - Journal of Colloid and Interface Science

ER -

TiO 2 nanorod arrays decorated with exfoliated WS 2 nanosheets for enhanced photoelectrochemical water oxidation

Abstract

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