Facile Fabrication of Nanofibrillated Chitin/Ag2O Heterostructured Aerogels with High Iodine Capture Efficiency

Abstract Nanofibrillated chitin/Ag2O aerogels were fabricated for radioiodine removal. Chitin was first fabricated into nanofibers with abundant acetyl amino groups (–NHCOCH3) on the surface. Then, highly porous chitin nanofiber (ChNF) aerogels were obtained via freeze-drying. The ChNF aerogels exhi...

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Autores principales:	Runan Gao, Yun Lu, Shaoliang Xiao, Jian Li
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/b454176864754e9d8e16a22b7f59d4e1
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spelling	oai:doaj.org-article:b454176864754e9d8e16a22b7f59d4e12021-12-02T11:41:11ZFacile Fabrication of Nanofibrillated Chitin/Ag2O Heterostructured Aerogels with High Iodine Capture Efficiency10.1038/s41598-017-04436-82045-2322https://doaj.org/article/b454176864754e9d8e16a22b7f59d4e12017-06-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-04436-8https://doaj.org/toc/2045-2322Abstract Nanofibrillated chitin/Ag2O aerogels were fabricated for radioiodine removal. Chitin was first fabricated into nanofibers with abundant acetyl amino groups (–NHCOCH3) on the surface. Then, highly porous chitin nanofiber (ChNF) aerogels were obtained via freeze-drying. The ChNF aerogels exhibited a low bulk density of 2.19 mg/cm3 and a high specific surface area of 179.71 m2/g. Ag2O nanoparticles were evenly anchored on the surfaces of ChNF scaffolds via strong interactions with –NHCOCH3 groups, subsequently yielding Ag2O@ChNF heterostructured aerogels. The composites were used as efficient absorbents to remove radioiodine anions from water and capture a high amount of I2 vapor in the forms of AgI and iodine molecules. The adsorption capacity of the composite monoliths can reach up to 2.81 mmol/g of I− anions. The high adsorbability of the composite monolithic aerogel signifies its potential applications in radioactive waste disposal.Runan GaoYun LuShaoliang XiaoJian LiNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-9 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Runan Gao Yun Lu Shaoliang Xiao Jian Li Facile Fabrication of Nanofibrillated Chitin/Ag2O Heterostructured Aerogels with High Iodine Capture Efficiency
description	Abstract Nanofibrillated chitin/Ag2O aerogels were fabricated for radioiodine removal. Chitin was first fabricated into nanofibers with abundant acetyl amino groups (–NHCOCH3) on the surface. Then, highly porous chitin nanofiber (ChNF) aerogels were obtained via freeze-drying. The ChNF aerogels exhibited a low bulk density of 2.19 mg/cm3 and a high specific surface area of 179.71 m2/g. Ag2O nanoparticles were evenly anchored on the surfaces of ChNF scaffolds via strong interactions with –NHCOCH3 groups, subsequently yielding Ag2O@ChNF heterostructured aerogels. The composites were used as efficient absorbents to remove radioiodine anions from water and capture a high amount of I2 vapor in the forms of AgI and iodine molecules. The adsorption capacity of the composite monoliths can reach up to 2.81 mmol/g of I− anions. The high adsorbability of the composite monolithic aerogel signifies its potential applications in radioactive waste disposal.
format	article
author	Runan Gao Yun Lu Shaoliang Xiao Jian Li
author_facet	Runan Gao Yun Lu Shaoliang Xiao Jian Li
author_sort	Runan Gao
title	Facile Fabrication of Nanofibrillated Chitin/Ag2O Heterostructured Aerogels with High Iodine Capture Efficiency
title_short	Facile Fabrication of Nanofibrillated Chitin/Ag2O Heterostructured Aerogels with High Iodine Capture Efficiency
title_full	Facile Fabrication of Nanofibrillated Chitin/Ag2O Heterostructured Aerogels with High Iodine Capture Efficiency
title_fullStr	Facile Fabrication of Nanofibrillated Chitin/Ag2O Heterostructured Aerogels with High Iodine Capture Efficiency
title_full_unstemmed	Facile Fabrication of Nanofibrillated Chitin/Ag2O Heterostructured Aerogels with High Iodine Capture Efficiency
title_sort	facile fabrication of nanofibrillated chitin/ag2o heterostructured aerogels with high iodine capture efficiency
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/b454176864754e9d8e16a22b7f59d4e1
work_keys_str_mv	AT runangao facilefabricationofnanofibrillatedchitinag2oheterostructuredaerogelswithhighiodinecaptureefficiency AT yunlu facilefabricationofnanofibrillatedchitinag2oheterostructuredaerogelswithhighiodinecaptureefficiency AT shaoliangxiao facilefabricationofnanofibrillatedchitinag2oheterostructuredaerogelswithhighiodinecaptureefficiency AT jianli facilefabricationofnanofibrillatedchitinag2oheterostructuredaerogelswithhighiodinecaptureefficiency
_version_	1718395480517378048

Facile Fabrication of Nanofibrillated Chitin/Ag2O Heterostructured Aerogels with High Iodine Capture Efficiency

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