The presence of an excessive concentration of CO2 in the atmosphere needs to be curbed with suitable measures including the reduction of CO2 emissions at stationary point sources such as power plants through carbon capture technologies and subsequent conversion of the captured CO2 into non-polluting clean fuels/chemicals using photo and/or electrocatalytic pathways. Porous materials have attracted much attention for carbon capture and in the recent past; they have witnessed significant advancements in their design and implementation for CO2 capture and conversion. In this context, the emerging trends in major porous adsorbents such as MOFs, zeolites, POPs, porous carbons, and mesoporous materials for CO2 capture and conversion are discussed. Their surface texture and chemistry, and the influence of various other features on their efficiency, selectivity, and recyclability for CO2 capture and conversion are explained and compared thoroughly. The scientific and technical advances on the material structure versus CO2 capture and conversion provide deep insights into designing effective porous materials. The review concludes with a summary, which compiles the key challenges in the field, current trends and critical challenges in the development of porous materials, and future research directions combined with possible solutions for realising the deployment of porous materials in CO2 capture and conversion.

Emerging trends in porous materials for CO2 capture and conversion

Development of efficient and stable catalyst for the degradation of chlorinated volatile organic compounds (VOCs) is a hot research topic. In this study, we used plastic-based terephthalic acid for the synthesis of MIL-125, which further modified by the -NH2 and -NO2 groups. DFT calculations revealed that the N orbitals had an important contribution in reducing the band gap, leading to easier hydrogen absorption and high electron transfer efficiency. Optical studies, XPS, TRES, NH3-TPD and pyridine IR further demonstrated that the amino modification promoted the visible absorption range and acidity of MIL-125 in comparison to the nitro modification, resulting in efficient catalytic degradation of chlorobenzene and toluene, even in the presence of water. This work provides an economically feasible strategy for modifying metal organic frameworks (MOFs) and suggests the possible VOCs degradation pathways with EPR, in situ FTIR, GC-MS and TG-MS analysis. 

Synthesis of acidic MIL-125 from plastic waste: Significant contribution of N orbital for efficient photocatalytic degradation of chlorobenzene and toluene

Anthropogenic emissions have developed the environmental demands for proficient carbon dioxide (CO2) separation technologies Adsorption and membrane technologies are widely used to separate CO2 from other light gases due to their multiple technological benefits, including but not limited to factors such as energy efficiency and low environmental footprint In this context, zeolites are often used due to their intrinsic molecular sieving capacity This review initially addresses recent technological advances to enhance the gas separation performance of zeolite materials Current trends directed toward improving CO2 adsorption capacity of zeolites include amine, silica, and ion-exchange modifications Other promising efforts to improve the adsorption performance of zeolites involve processing zeolite nanoparticles, nanofibers, and zeolite-based foams The second part of the review deals with pristine and modified zeolites beneficial properties for designing polymer-based mixed matrix membranes (MMMs), which enable to adapt a desirable gas separation performance The gas transport mechanisms and morphological properties of MMMs are essential This review addresses the most current strategies used to improve interfacial adhesions between zeolite particulates and polymer matrices to overcome the trade-off between gas selectivity and permeability faced by pure polymeric membranes Filler shape and size play vital roles in determining the filler and polymer matrix's interfacial adhesions New structures of inorganic fillers have been designed to fabricate MMMs with excellent gas transport properties Hollow zeolite spheres (HZSs) are particularly interesting as they effectively minimize agglomeration and improve filler dispersion in the polymer matrix Furthermore, approaches that employ nanoporous layered fillers, including AMH-3 and Jilin-Davy-Faraday, layered solid No 1 (JDF-L1), have been reviewed to overcome the limitation of incorporating high contents of zeolites, which are required to improve the gas transport properties of MMMs Furthermore, this review explores implementing zeolitic imidazolate frameworks (ZIFs) in MMMs because of their tunable pore structure and remarkably high adsorption capacity and surface area as well as excellent chemical and thermal properties Lastly, we address the prospects and future developments in gas separation applications

A review on recent advances in CO2 separation using zeolite and zeolite-like materials as adsorbents and fillers in mixed matrix membranes (MMMs)

Waste to MOFs: sustainable linker, metal, and solvent sources for value-added MOF synthesis and applications

The accumulation of carbon dioxide (CO2) in the atmosphere has been recognized as one of the primary factors attributed to global warming. Various strategies have been proposed to mitigate the amount of atmospheric CO2 such as its separation from emission streams with storage or utilization in fuels and chemicals. Zeolite-based materials (zeotype materials), a class of microporous solids with: (i) structural features of high surface area, chemical tunability and high stability, and (ii) a long history of global scale industrial use, have been extensively investigated for CO2 capture. In this review, a comprehensive summary and discussion of the progress in the design and use of zeotype materials, e.g., cation and amine modifications, composites and templated carbons, for the capture of CO2 is presented. The CO2 adsorption mechanisms in these materials are described, and the factors that determine their performance are discussed. The application of zeotype materials for CO2 capture under conditions such as post-combustion, indoor air cleaning and direct air capture are presented. Further, the mechanisms of water-zeolites interaction as well as their impacts on CO2 adsorption performance are discussed. The review closes with a brief presentation on the challenges and opportunities for future research in the field.

Carbon dioxide capture with zeotype materials.

In the current study, a new type of composite adsorbent was synthesized by amine modification of binder-containing zeolite 4A bodies and its potential application in the post-combustion CO2 capture...

Amine Modification of Binder-Containing Zeolite 4A Bodies for Post-Combustion CO2 Capture

In this study, we introduced mesoporosity by post-synthesis modification of binder-containing zeolite 4A (Z4A) bodies using urea treatment, to synthesize hierarchical zeolite 4A (HZ4A) with tailored textural properties Hierarchical zeolite 4A such as HZ4A-1−3, HZ4A-1−1, and HZ4A-3−1 were synthesized by varying the urea to zeolite weight ratio as 1:3, 1:1, and 3:1 respectively The synthesized HZ4A displayed tunable physicochemical characteristics, where HZ4A-1−3 exhibited improved surface area (126 m2 g−1), enhanced mesopore volume (044 cm3 g−1) and co-existence of both micro (ca 04 nm) and mesopores (55 nm) HZ4A-1−3 also exhibited enhanced CO2 adsorption performance even when exposed to moisture at 1 bar and 40 °C Moreover, HZ4A-1−3 displayed excellent CO2 adsorption stability over ten consecutive adsorption-desorption cycles The presence of mesopores in HZ4A-1−3 facilitated rapid gas diffusion within the pores during both adsorption (29 s faster) and desorption (92 s faster), low water adsorption capacity (20 % lesser), mild desorption temperature (13 °C lesser) and low CO2 heat of adsorption (14 % lesser) as compared to Z4A bodies, and hence achieved better CO2 adsorption efficacy for HZ4A-1−3 with reasonable CO2 regeneration energy These results suggested the potential of hierarchical zeolite 4A (HZ4A) as a cost-effective sorbent for post-combustion CO2 capture application

Introducing mesoporosity in zeolite 4A bodies for Rapid CO2 capture

To understand critical problems associated with solid waste and its consequences for the environment, a laboratory experiment is presented on the synthesis of aluminum-based metal–organic framework...

Lab Cooked MOF for CO2 Capture: A Sustainable Solution to Waste Management

Incorporation of rice-husk-ash (RHA), an agricultural waste, in situ during the synthesis of MIL-101(Cr) resulted in a significant improvement in the CO2 adsorption properties over the synthesized RHA-MIL-101(Cr). The newly synthesized RHA-MIL-101(Cr) composite exhibited an enhancement of 14-27% in CO2 adsorption capacity as compared to MIL-101(Cr) at 25 °C and 1 bar. The content of RHA incorporated in RHA-MIL-101(Cr) fine tuned the CO2 capture performance to achieve high working capacity (0.54 mmol g-1), high purity (78%), superior CO2/N2 selectivity (18) and low isosteric heat of adsorption (20-30 kJ mol-1). The observed superior CO2 adsorption performance of RHA-MIL-101(Cr) is attributed to the fine tuning of textural characteristics-enhancement of 12-27% in BET surface area, 12-33% in total pore volume and 18-30% in micropore volume-upon incorporation of RHA in MIL-101(Cr).

/pdf/in-situ-casting-of-rice-husk-ash-in-metal-organic-frameworks-55a3lobvd4.pdf

In situ casting of rice husk ash in metal organic frameworks induces enhanced CO2 capture performance.

Zeolite 4A was functionalized via grafting and impregnation techniques using 0.3 wt% of isopropylamine (IPA) and (3-aminopropyl) trimethoxysilane (APTMS) respectively. Physicochemical properties of zeolite 4A containing binder were changed after amine loading, as both specific surface area and pore volume was decreased by 1.52 % 18.18 % and 28.06 % 90.90 % for Z4A-IPA (IPA impregnated zeolite 4A) and Z4A-APTMS (APTMS grafted zeolite 4A) respectively. The adsorbed CO2 amount of Z4A, Z4A-IPA, and Z4A-APTMS were 1.58 mmol g-1 (6.95 wt%), 2.31 mmol g-1 (10.16 wt%) and 1.05 mmol g-1 (4.62 wt%) respectively at 1 bar and 25 °C. Noticeably, among all the studied adsorbents, Z4A-IPA displayed the highest adsorption capacity of 1.39 mmol g-1 (6.11 wt%) at 0.15 bar, which is akin to the CO2 partial pressure of post-combustion flue gas. The multilayer tethering of the bulkier APTMS on the zeolite external surface resulted in the partial blockage of the pores and hence the facile access of CO2 inside the pores of zeolite was hindered. However, Z4A-APTMS was found to be more thermal stable than Z4A-IPA. Furthermore, we observed that physisorption was playing a vital role in CO2 adsorption for pristine zeolite 4A (Z4A), whereas, after amine incorporation, the presence of amine induced the heterogeneous interaction between CO2 and sorbents.

https://iopscience.iop.org/article/10.1088/1757-899X/377/1/012148/pdf

A comparative study of CO2 capture by amine grafted vs amine impregnated zeolite 4A

Handle everyday research tasks with reliable, citation-backed results

Your personal Research Agent to handle research tasks with citation-backed results

Popular Tasks used by Researchers

How can I help with your research?

Meet SciSpace

Get more enhanced response by uploading the PDFs you want me to reference.

No relevant PDFs in your library

SciSpace is the AI research assistant for academics. Run systematic literature reviews on 280M+ papers, and write papers with cited sources. Trusted by 1M+ students, PhDs & researchers.

SciSpace | AI for Research

Analyze PDFs

Code & Manuscripts

Funding & Grants

Literature & Patents

Medical & Clinical Data

Systematic Review

Visualize & Present

Web & Data

Build a Google Scholar-like website for your research.

Build a website

Create charts and images for your research

Create a Chart

Write a paper for submission to a journal

Draft a manuscript

Patent Search

Design eye-catching scientific posters in minutes.

Scientific Poster Generation

Systematic Literature Review

One task is running at the moment. Your messages will be shown right after.

Drag and drop or click here to browse

Loved by <highlight>1 million+</highlight> researchers

Extract a list of specific topics and their sources from unstructured text

Topics

Compare and analyze relevant papers that matches with your search

Papers

Get insights from PDFs and bookmarked papers from your library

My library

Recent searches

Try searching for:

Catch AI-generated content in scholarly and non-scholarly content

{ai} Detector

Ai Writer

Get PDF Summaries, highlighted text explanations 

Chat with PDF

Effortlessly create in-text citations and bibliographies in APA and 2,500 other formats

Citation generator

Get explanations, summaries, and answers on academic papers

Ease up your research workflow with {scispace}'s cohort of exciting AI tools

Elevate your academic writing skills and convey your ideas the way you want

Paraphraser

Explore our range of reading and writing tools

Your file is being prepared and should be ready in a few minutes. If it's a large file, it might take a bit longer. You can close this window, and we'll email you the file when it's done.

You have reached a maximum limit of <strong>{limit}</strong> columns in the table. Remove at least <strong>1</strong> column to add or create another one.

Debashis Panda

Author Tools

Chat about Author