Toan-Anh Quach, Minh-Khoa Duong, Sakar Mohan, Trong-On Do
{"title":"Cobalt-Atom Active Sites Grafted UiO-66-NH2 via EDTA for the Enhanced Production of Syngas in CO2 Photoreduction","authors":"Toan-Anh Quach, Minh-Khoa Duong, Sakar Mohan, Trong-On Do","doi":"10.1021/acsaem.4c01729","DOIUrl":null,"url":null,"abstract":"In recent years, the use of photocatalysts has emerged as a promising research direction to transform harmful CO<sub>2</sub> molecules into renewable fuels. In this work, the chelating agent ethylenediaminetetraacetic acid (EDTA) containing a central metal atom like Co was attached to the UiO-66-NH<sub>2</sub> metal–organic frameworks (MOFs) through a one-pot synthesis. Several samples with different molar ratios of UiO-66-NH<sub>2</sub>–Co and EDTA (molar ratios of UiO-66-NH<sub>2</sub>–Co/EDTA is 1.2; 0.6; and 0.4) were synthesized and assessed for photocatalytic CO<sub>2</sub> reduction to produce syngas (the mixture of CO and H<sub>2</sub>), which can be used for generating liquid fuels. Among these samples, the highest syngas production rate was achieved by sample U-E-0.6, yielding around 776.40 and 1217.29 μmol g<sup>–1</sup> h<sup>–1</sup> of CO and H<sub>2</sub>, respectively, at the end of 4 h. Multiple investigations, including electrochemical impedance, time-resolved, steady state photoluminescence, linear sweep voltammetry, and photocurrent measurements, revealed that the addition of EDTA-metal to UiO-66-NH<sub>2</sub> improved the photoelectrochemical properties of the system, thereby enhancing its photocatalytic activity under solar irradiation. This research paves the way for the development of a single atom encapsulated in the MOF material for photocatalytic CO<sub>2</sub> reduction.","PeriodicalId":4,"journal":{"name":"ACS Applied Energy Materials","volume":null,"pages":null},"PeriodicalIF":5.4000,"publicationDate":"2024-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"ACS Applied Energy Materials","FirstCategoryId":"88","ListUrlMain":"https://doi.org/10.1021/acsaem.4c01729","RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"CHEMISTRY, PHYSICAL","Score":null,"Total":0}
引用次数: 0
Abstract
In recent years, the use of photocatalysts has emerged as a promising research direction to transform harmful CO2 molecules into renewable fuels. In this work, the chelating agent ethylenediaminetetraacetic acid (EDTA) containing a central metal atom like Co was attached to the UiO-66-NH2 metal–organic frameworks (MOFs) through a one-pot synthesis. Several samples with different molar ratios of UiO-66-NH2–Co and EDTA (molar ratios of UiO-66-NH2–Co/EDTA is 1.2; 0.6; and 0.4) were synthesized and assessed for photocatalytic CO2 reduction to produce syngas (the mixture of CO and H2), which can be used for generating liquid fuels. Among these samples, the highest syngas production rate was achieved by sample U-E-0.6, yielding around 776.40 and 1217.29 μmol g–1 h–1 of CO and H2, respectively, at the end of 4 h. Multiple investigations, including electrochemical impedance, time-resolved, steady state photoluminescence, linear sweep voltammetry, and photocurrent measurements, revealed that the addition of EDTA-metal to UiO-66-NH2 improved the photoelectrochemical properties of the system, thereby enhancing its photocatalytic activity under solar irradiation. This research paves the way for the development of a single atom encapsulated in the MOF material for photocatalytic CO2 reduction.
期刊介绍:
ACS Applied Energy Materials is an interdisciplinary journal publishing original research covering all aspects of materials, engineering, chemistry, physics and biology relevant to energy conversion and storage. The journal is devoted to reports of new and original experimental and theoretical research of an applied nature that integrate knowledge in the areas of materials, engineering, physics, bioscience, and chemistry into important energy applications.