Conjugated Acetylenic Polymers Grafted Cuprous Oxide as an Efficient Z-Scheme Heterojunction for Photoelectrochemical Water Reduction

doi:10.1002/adma.202002486

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	Conjugated Acetylenic Polymers Grafted Cuprous Oxide as an Efficient Z-Scheme Heterojunction for Photoelectrochemical Water Reduction
	Sun, Hanjun ; Dong, Changlin ; Liu, Qinglei ; Yuan, Yang ; Zhang, Tao ; Zhang, Jian ; Hou, Yang ; Zhang, Di ; Feng, Xinliang
刊名	ADVANCED MATERIALS
	2020
卷号	32 期号:39
关键词	PHOTOCATHODE LAYER GRAPHDIYNE JUNCTIONS CU2O
DOI	10.1002/adma.202002486
英文摘要	As attractive materials for photoeletrochemical hydrogen evolution reaction (PEC HER), conjugated polymers (e.g., conjugated acetylenic polymers [CAPs]) still show poor PEC HER performance due to the associated serious recombination of photogenerated electrons and holes. Herein, taking advantage of the in situ conversion of nanocopper into Cu2O on copper cellulose paper during catalyzing of the Glaser coupling reaction, a general strategy for the construction of a CAPs/Cu2O Z-scheme heterojunction for PEC water reduction is demonstrated. The as-fabricated poly(2,5-diethynylthieno[3,2-b]thiophene) (pDET)/Cu2O Z-scheme heterojunction exhibits a carrier separation efficiency of 16.1% at 0.3 V versus reversible hydrogen electrode (RHE), which is 6.7 and 1.4-times higher respectively than those for pDET and Cu2O under AM 1.5G irradiation (100 mW cm(-2)) in the 0.1mNa(2)SO(4)aqueous solution. Consequently, the photocurrent of the pDET/Cu2O Z-scheme heterojunction reaches approximate to 520 mu A cm(-2)at 0.3 V versus RHE, which is much higher than pDET (approximate to 80 mu A cm(-2)), Cu2O (approximate to 100 mu A cm(-2)), and the state-of-the-art cocatalyst-free organic or organic-semiconductor-based heterojunctions/homojunctions photocathodes (1-370 mu A cm(-2)). This work advances the design of polymer-based Z-scheme heterojunctions and high-performance organic photoelectrodes.
学科主题	Chemistry ; Science & Technology - Other Topics ; Materials Science ; Physics
内容类型	期刊论文
源URL	[http://ir.nimte.ac.cn/handle/174433/20571]
专题	2020专题
作者单位	1.Feng, XL (corresponding author), Tech Univ Dresden, Ctr Adv Elect Dresden Cfaed, Mommsenstr 4, D-01062 Dresden, Germany. 2.Zhang, D (corresponding author), Shanghai Jiao Tong Univ, Sch Mat Sci & Engn, State Key Lab Met Matrix Composites, Shanghai 200240, Peoples R China. 3.Feng, XL (corresponding author), Tech Univ Dresden, Fac Chem & Food Chem, Mommsenstr 4, D-01062 Dresden, Germany.
推荐引用方式 GB/T 7714	Sun, Hanjun,Dong, Changlin,Liu, Qinglei,et al. Conjugated Acetylenic Polymers Grafted Cuprous Oxide as an Efficient Z-Scheme Heterojunction for Photoelectrochemical Water Reduction[J]. ADVANCED MATERIALS,2020,32(39).
APA	Sun, Hanjun.,Dong, Changlin.,Liu, Qinglei.,Yuan, Yang.,Zhang, Tao.,...&Feng, Xinliang.(2020).Conjugated Acetylenic Polymers Grafted Cuprous Oxide as an Efficient Z-Scheme Heterojunction for Photoelectrochemical Water Reduction.ADVANCED MATERIALS,32(39).
MLA	Sun, Hanjun,et al."Conjugated Acetylenic Polymers Grafted Cuprous Oxide as an Efficient Z-Scheme Heterojunction for Photoelectrochemical Water Reduction".ADVANCED MATERIALS 32.39(2020).