Browsing NTNU Open by Author "Dai, Zhongde"
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A Brief Review of Nanocellulose Based Hybrid Membranes for CO2 Separation
Dai, Zhongde; Ottesen, Vegar; Deng, Jing; Helberg, Ragne M Lilleby; Deng, Liyuan (Journal article; Peer reviewed, 2019)Due to the high specific surface area, high mechanical strength and broad possibility of surface modification, nanocellulose has obtained much attention as a new class of bio-based nanomaterials with promising potential ... -
Carbon molecular-sieve membranes developed from a Tröger's base polymer and possessing superior gas-separation performance
Dai, Zhongde; Guo, Hongfang; Deng, Jing; Deng, Liyuan; Yan, Jiaqi; Spontak, Richard J (Journal article; Peer reviewed, 2023)Carbon molecular-sieve membranes possess tremendous practical advantages over unary polymer membranes by providing high gas-separation performance levels, coupled with excellent mechanical and chemical stability. Improving ... -
Combination of ionic liquids with membrane technology: a new approach for CO2 separation
Dai, Zhongde (Doctoral thesis at NTNU;2016:91, Doctoral thesis, 2016)The objective of this PhD study is to combine the advantages of membrane and ILs technologies to develop high-performance IL-based membrane contactors and membranes for CO2 separation from various sources. First of all, ... -
Cross-linked PEG Membranes of Interpenetrating Networks with ILs as Additives for Enhanced CO2 Separation
Deng, Jing; Yu, Junbo; Dai, Zhongde; Deng, Liyuan (Journal article; Peer reviewed, 2019)Polyethylene glycol (PEG)-based membranes have recently been reported with excellent CO2 separation performances. However, the commonly exhibited high crystallinity may deteriorate the gas permeation properties in this ... -
The Effect of Crosslinking on the Physical Aging of PTMSP Membranes
Suciu, Sandra-Paula (Master thesis, 2017)For post-combustion CO2 capture, membranes with high permeability and relatively high CO2/N2 selectivity are favoured to compete with the commercial amine-based absorption technology. With the highest known CO2 permeability, ... -
Effects of Porous Supports in Thin-Film Composite Membranes on CO<inf>2</inf> Separation Performances
Guo, Hongfang; Xu, Wenqi; Wei, Jing; Ma, Yulei; Qin, Zikang; Dai, Zhongde; Deng, Jing; Deng, Liyuan (Peer reviewed; Journal article, 2023)Despite numerous publications on membrane materials and the fabrication of thin-film composite (TFC) membranes for CO2 separation in recent decades, the effects of porous supports on TFC membrane performance have rarely ... -
Effects of the Morphology of the ZIF on the CO2 Separation Performance of MMMs
Deng, Jing; Dai, Zhongde; Deng, Liyuan (Peer reviewed; Journal article, 2020)In this study, three zeolitic imidazolate frameworks (ZIFs) with different shapes—particles (0D), microneedles (1D), and leaves (2D)—were synthesized by tuning the polymeric additives. These ZIFs have been dispersed into ... -
Enhanced CO2/H2 separation by GO and PVA-GO embedded PVAm nanocomposite membranes
Xu, Wenqi (Doctoral theses at NTNU;2023:307, Doctoral thesis, 2023)The objective of this Ph.D. project is to develop facilitated transport nanocomposite membranes with superior CO2/H2 separation performances for H2 purification. The research activities include material synthesis, membrane ... -
Enhancement of the Separation Performances of High Free Volume Polymers for CO2 Capture
Løining, Vilde Stangeland (Master thesis, 2017)Poly(1-trimethylsilyl-1-propyne) (PTMSP) is a high free volume polymer exhibiting preferable properties such as a very high permeability for application in gas separation. Still, the poor selectivity of PTMSP need to be ... -
Fabrication and Evaluation of Bio-based Nanocomposite TFC Hollow Fiber Membranes for Enhanced CO2 capture
Dai, Zhongde; Deng, Jing; Yu, Qiang; Helberg, Ragne M Lilleby; Janakiram, Saravanan; Ansaloni, Luca; Deng, Liyuan (Journal article; Peer reviewed, 2019)Nanocellulose is a promising and sustainable biobased nanomaterial because of its excellent mechanical properties, biocompatibility, natural abundance, and especially its high aspect ratio. Interest in applying nanocellulose ... -
Facile and Solvent-free Fabrication of PEG-based Membranes with Interpenetrating Networks for CO2 Separation
Deng, Jing; Dai, Zhongde; Yan, Jiaqi; Sandru, Marius; Sandru, Eugenia; Spontak, Richard J; Deng, Liyuan (Journal article; Peer reviewed, 2018)For nearly two decades, membranes derived from polyethers have served as promising candidate materials for CO2 separation. Due to the inherent tendency of high-molecular-weight poly(ethylene oxide) (PEO) to crystallize and ... -
Facilitated Transport Nanocomposite Membranes for CO<inf>2</inf>/H<inf>2</inf> Separation: The Effect of Mobile Carriers
Xu, Wenqi; Lindbråthen, Arne; Wang, Xueru; Dai, Zhongde; Deng, Liyuan (Peer reviewed; Journal article, 2023)Using CO2-selective membranes based on facilitated transport mechanisms has been reported as an energy-efficient approach for hydrogen purification from CO2-containing mixed gas streams. In this work, four CO2-philic mobile ... -
Field test of a pre-pilot scale hollow fiber facilitated transport membrane for CO2 capture
Dai, Zhongde; Fabio, Santinelli; Marino, Nardelli Giuseppe; Riccardo, Costi; Deng, Liyuan (Journal article; Peer reviewed, 2019)In this work, a pre-pilot scale hollow fiber membrane module with a PVA/ProK hybrid membrane containing up to 40 wt% amino acid salt was fabricated and tested infield for CO2 capture. The petroleum coke-fired flue gas ... -
H-2-selective Troger's base polymer based mixed matrix membranes enhanced by 2D MOFs
Deng, Jing; Dai, Zhongde; Deng, Liyuan (Peer reviewed; Journal article, 2020)In this work, two two-dimensional (2D) leaf ZIFs (ZIF-L-Zn and ZIF-L-Co) were incorporated into the Troger's base (TB)-based polymers for hydrogen separation. SEM imaging and enhanced performance have demonstrated good ... -
Helium separation using membrane technology: Recent advances and perspectives
Dai, Zhongde; Deng, Jing; He, Xuezhong; Scholes, Colin; Jiang, Xia; Wang, Bangda; Guo, Hongfang; Ma, Yulie; Deng, Liyuan (Peer reviewed; Journal article, 2021)Helium is an unrenewable noble gas produced from natural gas with a wide range of scientific, medical, and industrial applications. Due to the large differences in the kinetic diameters between helium (0.26 nm) and nitrogen ... -
High-performance carbon-capture membranes developed by (non)solvent-induced nanostructural rearrangement in Nafion
Wei, Jing; Deng, Jing; Ma, Yulei; Qin, Zikang; Wang, Bangda; Deng, Liyuan; Spontak, Richard J; Dai, Zhongde (Peer reviewed; Journal article, 2023)Membrane materials exhibiting high CO2 permeability and selectivity are needed for CO2 capture to mitigate global climate change. In this study, Nafion is dissolved in and cast from N-methylpyrrolidone to generate membranes ... -
Highly CO2-permeable membranes derived from a midblock-sulfonated multiblock polymer after submersion in water
Dai, Zhongde; Deng, Jing; Aboukeila, Hesham; yuan, jiaqi; Ansaloni, Luca; Mineart, Kenneth P.; Baschetti, Marco Giacinti; Spontak, Richard J; Deng, Liyuan (Journal article; Peer reviewed, 2019)To mitigate the effect of atmospheric CO2 on global climate change, gas separation materials that simultaneously exhibit high CO2 permeability and selectivity in gas mixtures must be developed. In this study, CO2 transport ... -
Humidity-responsive Molecular Gate-opening mechanism for Gas Separation in Ultraselective Nanocellulose/IL Hybrid Membranes
Janakiram, Saravanan; Ansaloni, Luca; Jin, Soo-Ah; Yu, Xinyi; Dai, Zhongde; Spontak, Richard J; Deng, Liyuan (Peer reviewed; Journal article, 2020)Nanofibrillated cellulose (NFC) represents an important class of bio-based nanomaterials that possess favorable properties including hydrophilicity, 1D structure, biodegradability, and surface tunability. Although widely ... -
Hybrid membranes to limit amine evaporation in membrane contactors for CO2 capture
Hauge, Marta Westad (Master thesis, 2017)In order to meet the global demand of energy from combustion processes with fossil fuels without interfering with the atmospheric levels of CO2 , carbon capture and storage (CCS) is considered a viable solution. Separation ... -
Hydrogen sulfide removal from natural gas using membrane technology: a review
Ma, Yulei; Guo, Hongfang; Selyanchyn, Roman; Wang, Bangda; Deng, Liyuan; Dai, Zhongde; Jiang, Xia (Peer reviewed; Journal article, 2021)Natural gas, having a significantly lower CO2 emission factor than oil and coal when combusted, is accepted as an important transition fuel towards carbon net-zero society. To meet the calorific value requirements (≥34.0 ...