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

Lu, Shuangchun; Liu, Qingling; Han, Rui; Guo, Miao; Shi, Jiaqi; Song, Chunfeng; Ji, Na; Lü, Xuebin; Ma, Degang

doi:10.1016/j.jes.2021.01.007

Cited by 74 publications

(32 citation statements)

References 166 publications

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“…Based on the adsorption capacities of UiO‐67‐4Me‐NH 2 ‐38 %, the quantities of MOF materials needed for moisture control and pollutants capture in a 60 m 3 room at 25 °C can be estimated: 1.495 Kg MOF is required to increase humidity form 0 to 65 % RH (equivalent to 24.9 g m −3 ) or 0.805 Kg MOF is enough to decrease humidity from 100 to 65 % RH (equivalent to 1.34 g m −3 ); while 0.277, 2.182, 0.048, 0.043, 0.044 or 1.865 Kg MOFs are sufficient to capture formaldehyde, NH 3 , benzene, toluene, n‐hexane or SO 2 vapors, respectively in a 1000 ppm concentration under ≈50 % RH (equivalent to 4.6, 36.0, 0.8, 0.7, 0.7 or 31.0 g m −3 , see Supplementary Table 6). These results manifest the high efficiency of UiO‐67‐4Me‐ NH 2 ‐38 % for potentially cost‐saving indoor air conditioning and purifying, offering a promising adsorbent candidate in comparison with other less selective or regenerable materials [61, 62] …”

Section: Resultsmentioning

confidence: 76%

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High Water Adsorption MOFs with Optimized Pore‐Nanospaces for Autonomous Indoor Humidity Control and Pollutants Removal

et al. 2021

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The indoor air quality is of prime importance for human daily life and health, for which the adsorbents like zeolites and silica‐gels are widely used for air dehumidification and harmful gases capture. Herein, we develop a pore‐nanospace post‐engineering strategy to optimize the hydrophilicity, water‐uptake capacity and air‐purifying ability of metal‐organic frameworks (MOFs) with long‐term stability, offering an ideal candidate with autonomous multi‐functionality of moisture control and pollutants sequestration. Through variant tuning of organic‐linkers carrying hydrophobic and hydrophilic groups in the pore‐nanospaces of prototypical UiO‐67, a moderately hydrophilic MOF (UiO‐67‐4Me‐NH2‐38 %) with high thermal, hydrolytic and acid‐base stability is screened out, featuring S‐shaped water sorption isotherms exactly located in the recommended comfortable and healthy ranges of relative humidity for indoor ventilation (45 %–65 % RH) and adverse health effects minimization (40–60 % RH). Its exceptional attributes of water‐uptake working capacity/efficiency, contaminants removal, recyclability and regeneration promise a great potential in confined indoor environment application.

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Section: Resultsmentioning

confidence: 76%

“…These results manifest the high efficiency of UiO-67-4Me-NH 2 -38 %f or potentially costsaving indoor air conditioning and purifying,offering apromising adsorbent candidate in comparison with other less selective or regenerable materials. [61,62]…”

Section: Methodsmentioning

confidence: 99%

High Water Adsorption MOFs with Optimized Pore‐Nanospaces for Autonomous Indoor Humidity Control and Pollutants Removal

et al. 2021

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“…However, cotton wastes have been synthesized as adsorbents for the removal of these wastes, which contain organic and inorganic pollutants. Reference [39] stated that the porous nature of cotton wastes determines the adsorption efficiency. Czech, Shirvanimoghaddam [40] studied the adsorption efficiency of carbon microtubes using cotton strips as a precursor for the removal of PPCPs from water.…”

Section: • Water Treatmentmentioning

confidence: 99%

Cotton Wastes Functionalized Biomaterials from Micro to Nano: A Cleaner Approach for a Sustainable Environmental Application

et al. 2021

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The exponential increase in textile cotton wastes generation and the ineffective processing mechanism to mitigate its environmental impact by developing functional materials with unique properties for geotechnical applications, wastewater, packaging, and biomedical engineering have become emerging global concerns among researchers. A comprehensive study of a processed cotton fibres isolation technique and their applications are highlighted in this review. Surface modification of cotton wastes fibre increases the adsorption of dyes and heavy metals removal from wastewater. Cotton wastes fibres have demonstrated high adsorption capacity for the removal of recalcitrant pollutants in wastewater. Cotton wastes fibres have found remarkable application in slope amendments, reinforcement of expansive soils and building materials, and a proven source for isolation of cellulose nanocrystals (CNCs). Several research work on the use of cotton waste for functional application rather than disposal has been done. However, no review study has discussed the potentials of cotton wastes from source (Micro-Nano) to application. This review critically analyses novel isolation techniques of CNC from cotton wastes with an in-depth study of a parameter variation effect on their yield. Different pretreatment techniques and efficiency were discussed. From the analysis, chemical pretreatment is considered the most efficient extraction of CNCs from cotton wastes. The pretreatment strategies can suffer variation in process conditions, resulting in distortion in the extracted cellulose’s crystallinity. Acid hydrolysis using sulfuric acid is the most used extraction process for cotton wastes-based CNC. A combined pretreatment process, such as sonication and hydrolysis, increases the crystallinity of cotton-based CNCs. The improvement of the reinforced matrix interface of textile fibres is required for improved packaging and biomedical applications for the sustainability of cotton-based CNCs.

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“…As important contributors to particulate matter, surface ozone and secondary organic aerosols [ 1 , 2 ], their emissions are subjected to stringent legal restrictions [ 3 , 4 ]. Therefore, the development of new technologies to prevent the VOC contamination is currently of significant interest [ 5 , 6 , 7 , 8 ]. Among these, the processes that can enable the achievement of VOC resource utilization are a key to move towards sustainability; thus, these have received an increasing attention in recent years [ 9 , 10 , 11 , 12 , 13 , 14 ].…”

Section: Introductionmentioning

confidence: 99%

Utilization of Hematite Particles for Economical Removal of o-xylene in a High-Temperature Gas-Solid Reactor

Zhao

Qian

et al. 2022

Molecules

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To establish a novel approach for VOCs resource utilization, coupled o-xylene oxidation and hematite reduction was investigated in this study in a high-temperature gas-solid reactor in the temperature range 300–700 °C. As the o-xylene-containing inert gas (N2) stream traveled through the hematite particle bed, its reaction behavior was determined in programmed heating and constant temperature modes. Consequently, the effect of bed temperature, flow rate and o-xylene inlet concentration on both o-xylene removal performance and degree of hematite reduction was studied. The raw hematite and solid products were analyzed by TGA, XRF, XRD and SEM-EDS. The results showed that a temperature above 300 °C was required to completely eliminate o-xylene by hematite, and both o-xylene removal capacity and degree of hematite reduction at 5% breakthrough points enhanced on increasing the temperature and decreasing the flow rate. The increment in temperature from 300 °C to 700 °C led to a gradual reduction of Fe2O3 to Fe3O4, FeO and metallic iron. Thus, this study provides a novel, economic and promising technology for treating the VOC pollutants.

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

Cited by 74 publications

References 166 publications

High Water Adsorption MOFs with Optimized Pore‐Nanospaces for Autonomous Indoor Humidity Control and Pollutants Removal

High Water Adsorption MOFs with Optimized Pore‐Nanospaces for Autonomous Indoor Humidity Control and Pollutants Removal

Cotton Wastes Functionalized Biomaterials from Micro to Nano: A Cleaner Approach for a Sustainable Environmental Application

Utilization of Hematite Particles for Economical Removal of o-xylene in a High-Temperature Gas-Solid Reactor

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