Potential applications of porous organic polymers as adsorbent for the adsorption of volatile organic compounds

This chapter is focused on the transition-metal-containing LDHs-based materials having potential applications in both catalytic selective oxidation for obtaining chemicals and intermediates, and complete oxidation as a promising valuable technology for the destruction of Volatile Organic Compounds (VOCs).

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Green Nanosilicas for Monoaromatic Hydrocarbons Removal from Air

Silicon ◽

10.1007/s12633-020-00924-1 ◽

2021 ◽

Author(s):

Abdunaser M. Ewlad-Ahmed ◽

Michael Morris ◽

Justin Holmes ◽

David J. Belton ◽

Siddharth V. Patwardhan ◽

...

Keyword(s):

Volatile Organic Compounds ◽

Organic Compounds ◽

Gas Separation ◽

Substantial Reduction ◽

Mesoporous Silicas ◽

New Family ◽

Secondary Pollution ◽

Volatile Organic ◽

Potential Applications ◽

Monoaromatic Hydrocarbons

AbstractWe demonstrate a novel application of green nanosilicas (GN), prepared via an environmentally friendly route, in removing volatile organic compounds (VOCs). Herein, we aim to establish GN as viable alternatives to traditional mesoporous silicas for the removal of monoaromatic hydrocarbons (MAHC). The results show that the GN have high extraction efficiencies comparable to those previously reported for mesoporous silicas. It was demonstrated that bespoke GN can be syntheised readily with the ability to tailor their physical properties and MAHC adsorption. In order to understand the MAHC adsorption by GN, their porosity, morphology and pore structure were characterised. It was observed that the combination of broad pore size distribution and, in particular, the presence of meso- and micro-porosity in GN contributed to high MAHC extraction efficiencies and selectivity. Although from a commercial viewpoint, further optimisation of GN is desirable in order to replace traditional sorbents, this work clearly highlights a new family of “green” sorbents, which can be prepared with a substantial reduction in secondary pollution with potential applications in selective gas separation. Graphical Abstract

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Evaluating volatile organic compounds from Chinese traditional handmade paper by SPME-GC/MS

Heritage Science ◽

10.1186/s40494-021-00626-w ◽

2021 ◽

Vol 9 (1) ◽

Author(s):

Li Ding ◽

Qin Yang ◽

Jianhui Liu ◽

Zheng Lee

Keyword(s):

Volatile Organic Compounds ◽

Organic Compounds ◽

Solid Phase ◽

High Capacity ◽

Gas Chromatography Mass Spectrometry ◽

Chinese Calligraphy ◽

Printed Books ◽

Volatile Organic ◽

Potential Applications ◽

Benzene Series

AbstractOnce printed, books are always accompanied by the smells of volatile organic compounds (VOCs) which are continuously emitted not only by inks but also by papers themselves throughout their lives. Although the VOCs from papers may bring mild discomfort to readers, they are considered as very important factors that feature the degradation of papers and show potential applications in cultural relic appraisal. In this study, an analytical approach based on solid phase microextraction combined with gas chromatography-mass spectrometry (SPME-GC/MS) was proposed for the evaluation of volatile organic compounds (VOCs) emitted by Chinese traditional handmade papers. The VOCs evaluations and artificial aging processes were both applied to recent-made papers and naturally aged papers from a traditional Chinese calligraphy and painting scroll (collected by the National Museum of China). To be noticed, a large number of aliphatic acids, aldehydes, ketones, furan derivatives, benzene series and terpenoid substances indicated that the VOCs signals not only reveal the degradation of paper but also tentatively reflect the storage environment along hundreds of years ago. The semi-quantitative evaluation of markers indicated that the historical paper is under a serious degradation due to the high capacity it releases. Our results provided a path way to get the degradation information of ancient paintings as well as potential realistic applications such as the conservation of paper-based relics and the environmental protection in libraries and museums.

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Modification of cellulosic filler with diisocyanates – volatile organic compounds emission assessment and stability of chemical structure over time

Nordic Pulp & Paper Research Journal ◽

10.1515/npprj-2020-0104 ◽

2021 ◽

Vol 0 (0) ◽

Author(s):

Aleksander Hejna ◽

Mariusz Marć ◽

Jerzy Korol

Keyword(s):

Volatile Organic Compounds ◽

Organic Compounds ◽

Chemical Structure ◽

Methylene Diphenyl Diisocyanate ◽

Volatile Organic ◽

Before And After ◽

Potential Applications ◽

The Impact ◽

Term Storage ◽

No Emissions

Abstract This paper investigated the impact of type and content of diisocyanate on the structure of modified cellulose fillers. Four the most popular isocyanates were applied – isophorone, hexamethylene, toluene and methylene diphenyl diisocyanate – at loadings of 1–15 wt%. Chemical structure, and its short-term storage stability, were investigated for eight weeks. Moreover, the main volatile organic compounds detected during modification, as well as emitted from fillers before and after storage, were identified. The main compounds detected in the air during modifications were terpenes and terpenoids. No diisocyanates were detected, which is very beneficial considering their toxicity. They were emitted from modified fillers at 40 °C, but only from fresh samples. After storage no emissions were noted, which indicated successful modification of fillers, also confirmed by FTIR spectroscopy and changes in polarity of fillers’ surface. Observed changes should be considered beneficial for the potential applications of modified fillers in manufacturing of polymer composites.

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Amine-functionalized microporous covalent organic polymers for adsorptive removal of a gaseous aliphatic aldehyde mixture

Environmental Science Nano ◽

10.1039/d0en00537a ◽

2020 ◽

Vol 7 (11) ◽

pp. 3447-3468

Author(s):

Kumar Vikrant ◽

Yao Qu ◽

Ki-Hyun Kim ◽

Danil W. Boukhvalov ◽

Wha-Seung Ahn

Keyword(s):

Volatile Organic Compounds ◽

Gas Phase ◽

Organic Compounds ◽

Aliphatic Aldehyde ◽

Organic Polymers ◽

Adsorptive Removal ◽

Amine Functionalized ◽

Effective Removal ◽

Volatile Organic ◽

Phase Mixture

To pursue effective removal of gaseous volatile organic compounds (VOCs), adsorptive removal of a six-component aliphatic aldehyde gas phase mixture was investigated using two amine-functionalized microporous covalent organic polymers (COPs).

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