A two-photon tandem black phosphorus quantum dot-sensitized BiVO4 photoanode for solar water splitting

被引：94

作者：

Jin, Bingjun ^{[1
,2
,8
]}

Cho, Yoonjun ^{[2
]}

Park, Cheolwoo ^{[3
]}

Jeong, Jeehun ^{[4
]}

Kim, Sungsoon ^{[2
]}

Jin, Jie ^{[2
]}

Kim, Wooyul ^{[3
]}

Wang, Luyang ^{[5
]}

Lu, Siyu ^{[6
,7
]}

Zhang, Shengli ^{[1
]}

Oh, Sang Ho ^{[4
]}

Zhang, Kan ^{[1
,2
]}

Park, Jong Hyeok ^{[2
]}

机构：

[1] Nanjing Univ Sci & Technol, Sch Mat Sci & Engn, Inst Optoelect & Nanomat, MIIT Key Lab Adv Display Mat & Devices, Nanjing 210094, Peoples R China

[2] Yonsei Univ, Dept Chem & Biomol Engn, 50 Yonsei Ro, Seoul 03722, South Korea

[3] Sookmyung Womens Univ, Dept Chem & Biol Engn, Seoul 04310, South Korea

[4] Sungkyunkwan Univ, Dept Energy Sci, Suwon 16419, South Korea

[5] Shenzhen Technol Univ, Coll New Mat & New Energies, Shenzhen 518118, Guangdong, Peoples R China

[6] Zhengzhou Univ, Green Catalysis Ctr, Zhengzhou 450000, Peoples R China

[7] Zhengzhou Univ, Coll Chem, Zhengzhou 450000, Peoples R China

[8] Wuyi Univ, Sch Appl Phys & Mat, Jiangmen 529020, Peoples R China

来源：

ENERGY & ENVIRONMENTAL SCIENCE | 2022年 / 15卷 / 02期

关键词：

OPTICAL-PROPERTIES; GRAPHENE; HETEROSTRUCTURE; SEMICONDUCTOR; PHOTOCATALYST; DEVICE;

D O I：

10.1039/d1ee03014k

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The photoelectrochemical (PEC) water splitting efficiency is profoundly restricted by the limited light harvesting, rapid charge recombination, and sluggish water oxidation kinetics, in which the construction of a photoelectrode requires a strategic approach to overcome such intrinsic hurdles. Herein, we demonstrate novel black phosphorus quantum dots (BPQDs) with significant light absorbability up to the near-infrared region (NIR) to sensitize the etched BiVO4 photoanode (E-BiVO4) for a two-photon absorption tandem photoanode. A subsequent TiO2 overlayer (OL) significantly improves the stability of the E-BiVO4/BPQDs and eliminates the surface trap state to enhance charge separation. Finally, an oxygen evolution catalyst (OEC), NiOOH, loaded on E-BiVO4/BPQDs/OL further improves the water oxidation kinetics. The rationally designed E-BiVO4/BPQDs/OL-OEC with multiple components, each with definite functions, achieves a photocurrent density of 6.2 mA cm(-2) at 1.23 V vs. reversible hydrogen electrode (RHE) under AM 1.5 illumination, offering a high-end standard approach for achieving efficient solar-to-fuel conversion devices by combining a photosensitizer and passivation layer.

引用

页码：672 / 679

页数：8

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