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Applications of Nanomaterials in Gas Capture, Adsorption, Separation and Storage, 2nd Edition

A special issue of Nanomaterials (ISSN 2079-4991). This special issue belongs to the section "Environmental Nanoscience and Nanotechnology".

Deadline for manuscript submissions: closed (20 June 2026) | Viewed by 2932

Editor

Dr. Zheng Sun

E-Mail Website
Guest Editor
State Key Laboratory of Coal Resources and Safe Mining, China University of Mining and Technology, Xuzhou 221116, China
Interests: nanoconfined hydrocarbon phase behavior; nanoconfined fluid flow mechanism; pore network modeling; numerical simulation on coalbed methane reservoirs; production data analysis method; shale gas/oil development; CO2 storage and utilization; condensate gas reservoir
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Gas capture, adsorption, separation and storage play critical roles in energy utilization efficiency, a key issue that must be addressed in traditional petrochemistry and emerging industries aiming at net-zero CO2 emissions. The development of industry and technology has necessitated greater requirements and has introduced challenges for gas capture, separation and storage materials and technologies.

China’s Belt and Road Initiative represents a common aspiration across countries to achieve the sustainable development of the environment, the economy, society and people's livelihoods. To mitigate global warming and carbon emissions and reach carbon neutrality, CO2 capture and geological storage, hydrogen production, transport and storage projects and hydrocarbon/coal recovery must be realized. The development of nanomaterials with desired properties and corresponding methods for target applications—which can minimize the environmental impact via gas capture, separation and storage—has attracted increasing attention over the last few decades. Green and eco-friendly techniques focus on the relevant mechanisms and technology, which reduce the use of hazardous substances and non-renewable sources. Nanomaterials for gas capture, separation and storage are considered to be energy efficient, low-cost, renewable and environmentally friendly for a sustainable future.

This Special Issue will present the latest research related to CO2 capture, utilization and storage (CCUS); petrophysics; geology and other relevant topics. For this collection, original research articles and reviews are welcome. Research areas may include (but not limited to) the following:

  • CO2/CH4/H2 geo-storage;
  • Gas transport in nanoporous media;
  • Advanced nanomaterials for gas capture, adsorption, separation and storage;
  • Mechanisms of gas capture, adsorption, separation and storage.

We look forward to receiving your contributions.

Dr. Zheng Sun
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 250 words) can be sent to the Editorial Office for assessment.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-anonymized peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Nanomaterials is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2400 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • nanomaterials
  • nanophenomenon
  • nanogeology
  • CO2/CH4/H2 geo-storage
  • transport in porous media
  • advanced nanomaterials for gas capture, separation and storage
  • mechanisms of gas capture, separation and storage

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Related Special Issue

Published Papers (4 papers)

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Research

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17 pages, 3402 KB  
Article
A Visualization Analysis of Machine Learning Applications in Gas Adsorption Using Nanoporous Materials
by Xin Zhong, Xiong Liang and Huixia Zhang
Nanomaterials 2026, 16(14), 883; https://doi.org/10.3390/nano16140883 - 17 Jul 2026
Viewed by 465
Abstract
Machine learning has created new opportunities for gas adsorption research using nanoporous materials, but the field’s evolution remains insufficiently quantified. This study retrieved literature from the Web of Science Core Collection for 2010–2026 and retained 730 valid records from 1581 initial publications after [...] Read more.
Machine learning has created new opportunities for gas adsorption research using nanoporous materials, but the field’s evolution remains insufficiently quantified. This study retrieved literature from the Web of Science Core Collection for 2010–2026 and retained 730 valid records from 1581 initial publications after screening. VOSviewer, CiteSpace, and R were used to analyze publication growth, collaboration networks, journal sources, and thematic evolution. Results show that annual output remained generally below 20 before 2019, then increased rapidly and reached approximately 280 publications in 2025, indicating accelerated integration of machine learning with adsorption simulation, material screening, and performance evaluation. The source distribution broadened from a limited set of chemistry and engineering journals to diverse venues, with recent high publication weights in Chemical Engineering Journal, Separation and Purification Technology, ACS Applied Materials & Interfaces, Microporous and Mesoporous Materials, and Journal of Materials Chemistry A. Collaboration analysis identified 10 compact author clusters, including groups associated with Randall Q. Snurr, Seda Keskin, Zhiwei Qiao, Qingyuan Yang, and Chongli Zhong, whereas the weak bridging links among clusters indicate that cross-community collaboration remains limited. Country and institutional analyses show that China, the United States, Canada, Iran, India, South Korea, and the United Kingdom are leading contributors, with Guangzhou University, Koç University, Northwestern University, the Chinese Academy of Sciences, Beijing University of Chemical Technology, and the United States Department of Energy occupying prominent positions. Keyword evolution reveals a shift from adsorption behavior and porous adsorbents toward data-guided material selection, high-throughput screening, deep learning, Bayesian optimization, and performance optimization, offering guidance for data-driven adsorbent discovery. Full article
(This article belongs to the Special Issue Applications of Nanomaterials in Gas Capture, Adsorption, Separation and Storage, 2nd Edition)
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20 pages, 2394 KB  
Article
A Unified Gas–Liquid Carbonation Platform for Habit-Controlled Calcite Nanostructures
by Seungyeol Lee, Juhwan Woo and Chul Woo Rhee
Nanomaterials 2026, 16(14), 851; https://doi.org/10.3390/nano16140851 - 10 Jul 2026
Viewed by 436
Abstract
Calcite habit engineering offers a route to transform CO2 mineralization from bulk sequestration into value-added nanomaterial production. Here, we demonstrate that additive chemistry and seeding strategy can serve as separable, recipe-level levers for directing calcite habit formation within a unified CaO/Ca(OH)2 [...] Read more.
Calcite habit engineering offers a route to transform CO2 mineralization from bulk sequestration into value-added nanomaterial production. Here, we demonstrate that additive chemistry and seeding strategy can serve as separable, recipe-level levers for directing calcite habit formation within a unified CaO/Ca(OH)2 gas–liquid carbonation platform. This strategy highlights how solution-mediated habit control can bridge fundamental calcite crystallization mechanisms with scalable CO2 utilization and value-added carbonate nanomaterial production. Sodium glutamate yielded ~100 nm rhombohedral nanoparticles, staged MgSO4/ZnSO4 dosing produced whisker-like crystalline nanorods with aspect ratios of 4–7, and two-step seeded carbonation with NH4Cl generated fusiform spindle subunits that assembled into hierarchical rosette architectures. X-ray diffraction confirmed calcite as the only crystalline calcium carbonate phase detected under the present measurement conditions, with no detectable aragonite or vaterite reflections. SEM/TEM revealed distinct primary-subunit architectures, including internal striations in spindle particles indicative of oriented attachment. Thermogravimetry, N2 physisorption, and EDS further distinguished the products and showed that Mg/Zn/S modifiers in the whisker route are retained predominantly at crystal surfaces rather than incorporated into the calcite lattice. These results define calcite habit control through two independent levers: additive-driven facet selectivity and kinetic decoupling of nucleation from growth/assembly. The platform links scalable synthesis, CO2 utilization, and functional carbonate design. Full article
(This article belongs to the Special Issue Applications of Nanomaterials in Gas Capture, Adsorption, Separation and Storage, 2nd Edition)
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19 pages, 2493 KB  
Article
Nanoconfined Methane Storage Mechanism in Deep Coal Seams: A Wettability-Coupled Simplified Local Density Model
by Liang Ji, Xianyue Xiong, Zhihong Nie, Zhengchao Zhang, Ming Yuan, Yang Zhang, Chengchao Xu, Xiaolong Zhao, Hongtao Yang, Chengming Zhao and Zheng Sun
Nanomaterials 2025, 15(24), 1892; https://doi.org/10.3390/nano15241892 - 17 Dec 2025
Cited by 1 | Viewed by 700
Abstract
In deep coal seams, where nanopores (~2 nm) dominate, wettability effects, which govern molecule–wall interaction strength, critically control the methane storage, yet remain poorly understood. This work establishes, for the first time, a theoretical framework coupling the Simplified Local Density (SLD) model with [...] Read more.
In deep coal seams, where nanopores (~2 nm) dominate, wettability effects, which govern molecule–wall interaction strength, critically control the methane storage, yet remain poorly understood. This work establishes, for the first time, a theoretical framework coupling the Simplified Local Density (SLD) model with wettability effects to systematically describe nanoconfined methane behavior. Key innovations include modifying the equation of state (EoS) by incorporating a molecule–wall interaction term, correlating the nanopore wall energy parameter and adsorption layer thickness with the interaction strength, and deriving wettability-dependent shifted critical properties. This approach successfully relates the local methane density distribution to the surface contact angle, bridging the knowledge gap between nanoconfined behavior and both pore size and wettability. The results show that (a) the bulk-like gas proportion in deep seams exceeds 35%, far higher than in shallow seams, indicating superior development potential; (b) the bulk-like gas increases faster with pressure than adsorbed gas, while the adsorption amount decreases by up to 46%, as the contact angle rises from 0° to 80°; (c) the modified EoS significantly impacts the bulk-like gas, reducing its amount by about 8% in 3 nm pores due to weakened intermolecular interactions. This study underscores the necessity of integrating wettability to accurately predict the nanoconfined fluid behavior, especially for deep coal seam gas. Full article
(This article belongs to the Special Issue Applications of Nanomaterials in Gas Capture, Adsorption, Separation and Storage, 2nd Edition)
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Review

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53 pages, 12251 KB  
Review
Research Progress of Ionic Liquids Hybridized with Porous Materials for CO2 Capture: From Bulk to Confinement-Enhanced Adsorbents
by Enqi Zhang, Zhenzhen Wang, Yanwei Chi and Zhiyong Li
Nanomaterials 2026, 16(12), 727; https://doi.org/10.3390/nano16120727 - 11 Jun 2026
Viewed by 777
Abstract
The continuous rise in carbon emissions poses a serious threat to the global climate, driving the urgent need for efficient CCUS technologies. Ionic liquids (ILs), with their negligible vapor pressure, excellent thermal stability, and tunable molecular structures, have emerged as promising materials for [...] Read more.
The continuous rise in carbon emissions poses a serious threat to the global climate, driving the urgent need for efficient CCUS technologies. Ionic liquids (ILs), with their negligible vapor pressure, excellent thermal stability, and tunable molecular structures, have emerged as promising materials for CO2 capture. However, the high viscosity of bulk ILs severely restricts gas mass transfer. To overcome this limitation, integrating ILs with porous materials featuring large surface areas and well-defined pore structures has emerged as a synergistic strategy, combining the high CO2 affinity and selectivity of ILs with the rapid mass transfer and structural stability of porous supports. This review systematically summarizes the CO2 capture mechanisms and limitations of bulk ILs and further highlights recent advances in the design, synthesis, and applications of IL-based hybrid adsorbents. Particular attention is given to confinement-enhanced mechanisms, whereby nanoscale confinement fundamentally alters the physicochemical behavior of ILs, transforming them from disordered bulk liquids into ordered, interface-dominated systems. In addition, the life-cycle assessment and techno-economic analysis of IL hybrid systems are critically evaluated. Full article
(This article belongs to the Special Issue Applications of Nanomaterials in Gas Capture, Adsorption, Separation and Storage, 2nd Edition)
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