Xiaohui Yao, Changyan Zhu, Jie Zhou, Kunhao Zhang, Chunyi Sun, Man Dong, Guogang Shan, Zhuo Wu, Min Zhang, Xinlong Wang and Zhongmin Su
{"title":"通过调整 W-W 电子特性促进模拟烟气电还原中的尿素合成†。","authors":"Xiaohui Yao, Changyan Zhu, Jie Zhou, Kunhao Zhang, Chunyi Sun, Man Dong, Guogang Shan, Zhuo Wu, Min Zhang, Xinlong Wang and Zhongmin Su","doi":"10.1039/D4GC02536A","DOIUrl":null,"url":null,"abstract":"<p >The development of electrocatalysts that convert CO<small><sub>2</sub></small> and N<small><sub>2</sub></small> in flue gas to directly usable urea does not only explore the hidden value of exhaust gas but also alleviates the global environmental issues caused by excessive CO<small><sub>2</sub></small> emissions; yet, related research studies are still in their infancy. Herein, multi-porous Cu–W<small><sub>18</sub></small>O<small><sub>49</sub></small>@ZIF-8, composed of ultra-small nanosized ZIF-8 on Cu-doped W<small><sub>18</sub></small>O<small><sub>49</sub></small> nanowires, was fabricated as a urea-generation electrocatalyst in flue gas. It exhibits an appealing Faraday efficiency of urea up to 16.1% at −0.9 V (<em>vs.</em> RHE) and an outstanding yield of 1.33 mmol g<small><sup>−1</sup></small> h<small><sup>−1</sup></small> at −1.0 V (<em>vs.</em> RHE) under the flue gas atmosphere. The catalytic performance was maintained for a wide range of N<small><sub>2</sub></small> : CO<small><sub>2</sub></small> ratios. Theoretical calculations indicate that the doped copper regulates the electron density around the adjacent W–W, which facilitates N<small><sub>2</sub></small> adsorption, partly suppresses the HER side reaction, and decreases the Δ<em>G</em> of the following multi-step hydrogenation after *CO insertion until urea production.</p>","PeriodicalId":78,"journal":{"name":"Green Chemistry","volume":null,"pages":null},"PeriodicalIF":9.3000,"publicationDate":"2024-06-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Boosting urea synthesis in simulated flue gas electroreduction by adjusting W–W electronic properties†\",\"authors\":\"Xiaohui Yao, Changyan Zhu, Jie Zhou, Kunhao Zhang, Chunyi Sun, Man Dong, Guogang Shan, Zhuo Wu, Min Zhang, Xinlong Wang and Zhongmin Su\",\"doi\":\"10.1039/D4GC02536A\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p >The development of electrocatalysts that convert CO<small><sub>2</sub></small> and N<small><sub>2</sub></small> in flue gas to directly usable urea does not only explore the hidden value of exhaust gas but also alleviates the global environmental issues caused by excessive CO<small><sub>2</sub></small> emissions; yet, related research studies are still in their infancy. Herein, multi-porous Cu–W<small><sub>18</sub></small>O<small><sub>49</sub></small>@ZIF-8, composed of ultra-small nanosized ZIF-8 on Cu-doped W<small><sub>18</sub></small>O<small><sub>49</sub></small> nanowires, was fabricated as a urea-generation electrocatalyst in flue gas. It exhibits an appealing Faraday efficiency of urea up to 16.1% at −0.9 V (<em>vs.</em> RHE) and an outstanding yield of 1.33 mmol g<small><sup>−1</sup></small> h<small><sup>−1</sup></small> at −1.0 V (<em>vs.</em> RHE) under the flue gas atmosphere. The catalytic performance was maintained for a wide range of N<small><sub>2</sub></small> : CO<small><sub>2</sub></small> ratios. Theoretical calculations indicate that the doped copper regulates the electron density around the adjacent W–W, which facilitates N<small><sub>2</sub></small> adsorption, partly suppresses the HER side reaction, and decreases the Δ<em>G</em> of the following multi-step hydrogenation after *CO insertion until urea production.</p>\",\"PeriodicalId\":78,\"journal\":{\"name\":\"Green Chemistry\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":9.3000,\"publicationDate\":\"2024-06-07\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Green Chemistry\",\"FirstCategoryId\":\"92\",\"ListUrlMain\":\"https://pubs.rsc.org/en/content/articlelanding/2024/gc/d4gc02536a\",\"RegionNum\":1,\"RegionCategory\":\"化学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"CHEMISTRY, MULTIDISCIPLINARY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Green Chemistry","FirstCategoryId":"92","ListUrlMain":"https://pubs.rsc.org/en/content/articlelanding/2024/gc/d4gc02536a","RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"CHEMISTRY, MULTIDISCIPLINARY","Score":null,"Total":0}
Boosting urea synthesis in simulated flue gas electroreduction by adjusting W–W electronic properties†
The development of electrocatalysts that convert CO2 and N2 in flue gas to directly usable urea does not only explore the hidden value of exhaust gas but also alleviates the global environmental issues caused by excessive CO2 emissions; yet, related research studies are still in their infancy. Herein, multi-porous Cu–W18O49@ZIF-8, composed of ultra-small nanosized ZIF-8 on Cu-doped W18O49 nanowires, was fabricated as a urea-generation electrocatalyst in flue gas. It exhibits an appealing Faraday efficiency of urea up to 16.1% at −0.9 V (vs. RHE) and an outstanding yield of 1.33 mmol g−1 h−1 at −1.0 V (vs. RHE) under the flue gas atmosphere. The catalytic performance was maintained for a wide range of N2 : CO2 ratios. Theoretical calculations indicate that the doped copper regulates the electron density around the adjacent W–W, which facilitates N2 adsorption, partly suppresses the HER side reaction, and decreases the ΔG of the following multi-step hydrogenation after *CO insertion until urea production.
期刊介绍:
Green Chemistry is a journal that provides a unique forum for the publication of innovative research on the development of alternative green and sustainable technologies. The scope of Green Chemistry is based on the definition proposed by Anastas and Warner (Green Chemistry: Theory and Practice, P T Anastas and J C Warner, Oxford University Press, Oxford, 1998), which defines green chemistry as the utilisation of a set of principles that reduces or eliminates the use or generation of hazardous substances in the design, manufacture and application of chemical products. Green Chemistry aims to reduce the environmental impact of the chemical enterprise by developing a technology base that is inherently non-toxic to living things and the environment. The journal welcomes submissions on all aspects of research relating to this endeavor and publishes original and significant cutting-edge research that is likely to be of wide general appeal. For a work to be published, it must present a significant advance in green chemistry, including a comparison with existing methods and a demonstration of advantages over those methods.