Red-Light-Driven CO2 Photoreduction into CH4 and CO Enabled by Narrow-Gap Conjugated Microporous Polymers

被引：9

作者：

Wu, Wei ^{[1
]}

Dai, Chunhui ^{[1
]}

Wu, Miaomiao ^{[1
]}

Chen, Yong ^{[1
]}

Zeng, Chao ^{[2
]}

Li, Fei ^{[3
]}

机构：

[1] East China Univ Technol, Sch Chem Biol & Mat Sci, Jiangxi Key Lab Mass Spectrometry & Instrumentat, Nanchang, Peoples R China

[2] Jiangxi Normal Univ, Inst Adv Mat IAM, Nanchang 330022, Peoples R China

[3] China Pharmaceut Univ, Coll Engn, Natl R&D Ctr Chinese Herbal Med Proc, Nanjing 211109, Peoples R China

来源：

SOLAR RRL | 2023年 / 7卷 / 02期

基金：

中国国家自然科学基金; 美国国家科学基金会;

关键词：

CO2; photoreduction; conjugated microporous polymers; narrow gap; red light; REDUCTION;

D O I：

10.1002/solr.202200907

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

0807 ; 0820 ;

摘要：

Herein, selective CO2 photoreduction into CH4 and CO with red light using conjugated microporous polymers (CMPs) at room temperature is reported. By incorporating electron-rich pyrene and electron-deficient fluorenone derivatives in the polymer networks to constructing intramolecular donor-acceptor system, the resulting three polymers show very broad light absorption covered from 350 to 1000 nm, with narrow gaps of 1.61-1.74 eV. In the presence of triethanolamine and 1-benzyl-1,4-dihydronicotinamide as the sacrificial agents, P3 exhibits the best visible-light reduction activity, with CH4 and CO evolution rates of 932.9 and 943.4 mu mol h(-1) g(-1), respectively. Most significantly, under the irradiation of red light (>600 nm), high evolution rates of CH4 and CO for P3 are achieved at 293.7 and 282.6 mu mol h(-1) g(-1), as well as nearly 100% reaction selectivity. The better performance of P3 than P1 and P2 can be ascribed to the high absorption toward CO2 and improved charge transfer under light irradiation. This work opens great opportunities for designing broadband-responsive CMPs for solar-driven photocatalytic conversion.

引用

页数：7