The low-temperature NO2 removal by tailoring metal node in porphyrin-based metal-organic frameworks

doi:10.1016/j.scitotenv.2021.149710

GIEC OpenIR

	The low-temperature NO2 removal by tailoring metal node in porphyrin-based metal-organic frameworks
	Shang, Shanshan 1,2; Wen, Chengyan 3; Yang, Chao 4; Tian, Yuanmeng 1,2; Wang, Chenguang 5; Shang, Jin 1,2
	2021-12-20
发表期刊	SCIENCE OF THE TOTAL ENVIRONMENT
ISSN	0048-9697
卷号	801 页码:10
通讯作者	Shang, Jin(jinshang@cityu.edu.hk)
摘要	Nitrogen dioxide (NO2) is the most toxic and prevalent form of nitrogen oxides (NOx) pollutant and its removal from ambient air is a pressing challenge. The state-of-the-art deNO(x) technologies such as selective catalytic reduction (SCR) can only work at elevated temperatures (>250-300 degrees C), but ineffective for the NOx removal under ambient conditions. The adsorptive removal of NO2 is an alternative approach to SCR, whose success depends on the design of stable adsorbents capable of selectively capturing NO2 with a highly reversible capacity. Here we synthesized and developed five porphyrin-based metal-organic frameworks (PMOFs) as robust ambient NO2 adsorbents, including three aluminum-based (Al-PMOF) isostructures, and two zirconium-based (ZrPMOFs) isostructures. Of them, Al-PMOF stands out to be the most promising candidate by showing the highest NO2 adsorption capacity (1.85 mmol/g), high stability, and good regenerability (retaining 87% capacity after five cycles of adsorption) at dry conditions. The NO2 adsorption capacity of Al-PMOF was approximately doubled (3.61 mmol/g) at wet conditions. In situ diffuse reflectance infrared Fourier transform spectroscopy (DRIFTS) revealed the NO2 adsorption mechanism - the hydrogen bonding occurs between bridging hydroxyl (-OH) (attached to the metal node) and NO2 molecules. Our work demonstrates that PMOFs are promising NO2 adsorbents and will provide guidance for designing robust and reusable adsorbents for efficiently removing NO2 at ambient temperature. (C) 2021 Elsevier B.V. All rights reserved.
关键词	Porphyrin-based MOFs Metal node NO2 adsorption Hydrogen bonding
DOI	10.1016/j.scitotenv.2021.149710
关键词[WOS]	MIXED OXIDES ; ADSORPTION ; ACID ; CAPTURE ; ADSORBENTS ; REDUCTION ; COPPER
收录类别	SCI
语种	英语
资助项目	Science and Technology Innovation Commission of Shenzhen Municipality[JCYJ20180307123906004] ; Science and Technology Innovation Commission of Shenzhen Municipality[JCYJ20190808181003717] ; Research Grants Council of Hong Kong[CityU 21301817] ; Research Grants Council of Hong Kong[11215518] ; City University of Hong Kong[CityU 9667217] ; City University of Hong Kong[CityU 11308420] ; City University of Hong Kong[6000716]
WOS研究方向	Environmental Sciences & Ecology
项目资助者	Science and Technology Innovation Commission of Shenzhen Municipality ; Research Grants Council of Hong Kong ; City University of Hong Kong
WOS类目	Environmental Sciences
WOS记录号	WOS:000704388000010
出版者	ELSEVIER
引用统计	被引频次：15[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.giec.ac.cn/handle/344007/35042
专题	中国科学院广州能源研究所
通讯作者	Shang, Jin
作者单位	1.City Univ Hong Kong, Sch Energy & Environm, Kowloon, Tat Chee Ave, Hong Kong, Peoples R China 2.City Univ Hong Kong, Shenzhen Res Inst, 8 Yuexing 1st Rd,Shenzhen Hitech Ind Pk, Shenzhen, Peoples R China 3.Southeast Univ, Sch Energy & Environm, Nanjing, Peoples R China 4.Univ Hong Kong, Dept Civil Engn, Pokfulam, Hong Kong, Peoples R China 5.Chinese Acad Sci, Guangzhou Inst Energy Convers, Key Lab Renewable Energy, Guangzhou, Peoples R China
推荐引用方式 GB/T 7714	Shang, Shanshan,Wen, Chengyan,Yang, Chao,et al. The low-temperature NO2 removal by tailoring metal node in porphyrin-based metal-organic frameworks[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2021,801:10.
APA	Shang, Shanshan,Wen, Chengyan,Yang, Chao,Tian, Yuanmeng,Wang, Chenguang,&Shang, Jin.(2021).The low-temperature NO2 removal by tailoring metal node in porphyrin-based metal-organic frameworks.SCIENCE OF THE TOTAL ENVIRONMENT,801,10.
MLA	Shang, Shanshan,et al."The low-temperature NO2 removal by tailoring metal node in porphyrin-based metal-organic frameworks".SCIENCE OF THE TOTAL ENVIRONMENT 801(2021):10.