Article
Chemistry, Multidisciplinary
Kivanc Basaran, B. Umay Topcubasi, Tugba Davran-Candan
Summary: This study investigated CO2 adsorption over functionalized mesoporous silica and found that hydrogen bonding interactions with surface silanols and neighboring amines were critical for the formation and stabilization of the adsorption products. It was also shown that surface silanols played a significant role in the thermodynamics and kinetics of the reaction mechanism, and could directly participate in the reaction. The impact of amine functionality on the reaction mechanism was found to be less conclusive compared to surface silanols under the conditions employed in this study.
JOURNAL OF CO2 UTILIZATION
(2021)
Article
Engineering, Chemical
John-Timothy Anyanwu, Yiren Wang, Ralph T. Yang
Summary: The water concentration significantly influences amine loading and grafting rate on SBA-15 mesoporous silica, with water being more effective than alcohol. Beyond a certain threshold, increasing aminosilane content does not result in higher amine loading. The mere presence of water during grafting accelerates the complete grafting of amines to supports in a short period of time.
CHEMICAL ENGINEERING SCIENCE
(2021)
Article
Engineering, Environmental
Ali Ayub, Sara Ahsan, Daniel Meeroff, Masoud Jahandar Lashaki
Summary: The potential of amine-grafted silica materials for single-stage biogas purification was investigated. The materials showed high CO2 adsorption performance and stability, making them a viable method for biogas purification.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Engineering, Chemical
John-Timothy Anyanwu, Yiren Wang, Ralph T. Yang
Summary: It was found that amine-grafting at low temperature can result in higher amine loadings, especially under wet grafting conditions. This is because more water occupies the pore space at lower temperatures, leading to higher amine loadings.
CHEMICAL ENGINEERING SCIENCE
(2022)
Article
Energy & Fuels
Huangyu Yan, Guojie Zhang, Ying Xu, Qiqi Zhang, Jun Liu, Guoqiang Li, Yuqiong Zhao, Ying Wang, Yongfa Zhang
Summary: In recent years, amine functionalized materials have attracted great interest as prospective solid adsorbents for CO2 capture. However, the amine functionalization of traditional supports can lead to a decrease in the pore volume and specific surface area, affecting the CO2 adsorption-desorption kinetics. In this study, macro-/mesoporous multimodal pore silica was synthesized using a ternary nonionic surfactant as a template and impregnated with TEPA to overcome this issue. The resultant HMS-4h support exhibited bimodal pores, high surface area and large pore volume, leading to improved dispersibility of TEPA and reduced diffusion resistance of CO2. The highest adsorption capacity reached 6.04 mmol/g and remained steady after 10 adsorption-desorption cycles. The research provides valuable insights for the design of high-performance solid amine CO2 adsorbents in the future.
Article
Biochemistry & Molecular Biology
Ho-Joong Kim, Sung Tae Kim, Dae Beom Park, Hoon Cho, Md Asadujjaman, Jun-Pil Jee
Summary: The use of TPP-modified MSNP to enhance the algicidal activity of the new algicidal agent DP92 has shown promising results in inhibiting the growth rate of harmful algal blooms. This study highlights the potential of DP92-loaded TPP-MSNP as an effective algicidal agent for the management of HABs.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2022)
Article
Chemistry, Multidisciplinary
Chun-Feng Lai, Fu-Jia Shiau
Summary: In this research, hydrogel contact lenses (CLs) were designed to deliver hyaluronic acid (HA) for treating dry eye syndrome. Large-pore mesoporous silica nanoparticles (LPMSNs) were used to achieve extended release of HA. The LPMSN-amine CLs demonstrated slower and superior release of HA compared to LPMSN-siloxane and standard CLs, making them a promising solution for dry eye management.
Article
Multidisciplinary Sciences
Rajesh Ghosh, Saranya Gopalakrishnan, T. Renganathan, S. Pushpavanam
Summary: In this study, a novel method for ultratrace metal detection based on colorimetric sensing is reported. The method integrates nanomaterial preconcentration with a colorimetric assay, providing a rapid, affordable, and sensitive analytical approach. The proposed method demonstrated high selectivity and sensitivity for chromium(VI) ions in water samples, making it a potential tool for de-centralized monitoring of organic/inorganic pollutants in resource-constrained settings.
SCIENTIFIC REPORTS
(2022)
Article
Energy & Fuels
Fahimeh Esmi, Tahereh Nematian, Zeinab Salehi, Abbas Ali Khodadadi, Ajay K. Dalai
Summary: Fatty acid methyl ester (FAME) was synthesized from olive oil using Rhizopus oryzae lipase (ROL) immobilized on mesoporous silica magnetic nanoparticles (MNPs). The immobilized lipase showed increased enzyme loading efficiency and led to a higher biodiesel production compared to other nanobiocatalysts, making it a suitable nanomaterial for ROL immobilization. The physico-chemical properties of the MNPs were characterized and correlated with their activities for biodiesel synthesis.
Article
Chemistry, Applied
Jason Richard, Anthony Phimphachanh, Alix Jamet-Fournier, Thomas Cacciaguerra, Philippe Dieudonne-George, Didier Cot, Mathias Destarac, Patrick Lacroix-Desmazes, Martin In, Nathalie Marcotte, Corine Gerardin
Summary: A versatile approach has been developed to prepare small mesoporous silica particles with simultaneous control of the internal ordered pore structure and the external particle surface. Mixed polyion complex (PIC) micelles are used as silica structure-directing agents, allowing for the modulation of pore structure. By replacing a fraction of the poly(ethylene oxide) based-block with a polyacrylamide block, the particle size can be reduced and the particle surface can be stabilized.
MICROPOROUS AND MESOPOROUS MATERIALS
(2022)
Article
Chemistry, Physical
Yiyue Ding, Wenfang Peng, Lei Zhang, Jianhui Xia, Gang Feng, Zhang-Hui Lu
Summary: In this study, ultrafine Pd-Cr(OH)3/AFMS catalysts were successfully synthesized and demonstrated efficient catalytic activity for hydrogen evolution from formic acid without additives. The catalyst exhibited comparable catalytic performance to other highly efficient catalysts under similar reaction conditions.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Article
Environmental Sciences
Ni Tang, Xue Liu, Meng-Ru Jia, Xin-Yao Shi, Jing-Wei Fu, Dong-Xing Guan, Lena Q. Ma
Summary: In this study, well-ordered Amino-and Thiol-Bifunctionalized SBA-15 (ATBS) mesoporous silica was synthesized using a two-step functionalizing strategy. The physicochemical properties, performance, and mechanisms of ATBS in immobilizing toxic metals Pb and Cd in water and soil were investigated. The results showed that ATBS maintained a highly-ordered mesoporous structure, large surface area, and pore volume, and successfully incorporated amine and thiol groups. ATBS exhibited high sorption efficiencies for Pb and Cd and could effectively immobilize these metals in contaminated water and soils.
Article
Chemistry, Multidisciplinary
Sagar M. Mane, Chaitany Jayprakash Raorane, Jae Cheol Shin
Summary: A mesoporous silica adsorbent was prepared using a sol-gel co-condensation method, showing high selectivity for adsorption of copper ions with fast adsorption rate and efficient recyclable stability.
Article
Chemistry, Multidisciplinary
Shigeru Sakamoto, Kenji Okada, Shinji Tanaka, Yasuhito Kotera, Arisa Fukatsu, Masahide Takahashi
Summary: Single-digit nanometer scale silica nanoparticles with partially crystalline frameworks were successfully prepared using a reverse mesostructure approach. Crystallization was observed on the mesostructure where polycondensation of hydrolyzed silica precursors occurred in confined space of reverse micelles. A new mechanism for the formation of crystalline silica framework under acidic condition was proposed.
Article
Biochemistry & Molecular Biology
Khalid A. M. Salih, Mohammed F. Hamza, Hamed Mira, Yuezhou Wei, Feng Gao, Ayman M. Atta, Toyohisa Fujita, Eric Guibal
Summary: This study successfully developed a new sorbent for the efficient recovery of rare earth ions from aqueous solutions. The sorbent showed good adsorption capacity for Nd(III) and Gd(III), high selectivity, and the ability to obtain pure rare earth oxides through a simple process.
Article
Materials Science, Multidisciplinary
Bao Nguyen Truong, Jeasung Park, Oh Kyung Kwon, In Park
Article
Chemistry, Multidisciplinary
Ha Soo Hwang, Jin Kie Shim, In Park
JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY
(2011)
Article
Polymer Science
Jiyoung Lee, Ha Soo Hwang, Tien N. H. Lo, Won-Gun Koh, In Park
Article
Chemistry, Multidisciplinary
Giang Tien Nguyen, Ha Soo Hwang, Jiyoung Lee, Dong An Cha, In Park
Summary: A novel n-octadecane/fumed silica phase change composite with high porosity, high latent heat storage capacity, and good thermal reliability was prepared and applied on building envelopes. Compared to commercial polystyrene foam panels, the phase change composite panel effectively delayed heat transfer and indoor temperature increase in a test room.
Article
Chemistry, Multidisciplinary
Giang Tien Nguyen, Ha Soo Hwang, Jiyoung Lee, In Park
Summary: The novel AA/EG phase change composite exhibited high heat storage capacity and low supercooling degree, with high cycling durability and thermal stability shown in accelerated thermal cycling tests. The thermal conductivity of the PCC was significantly improved, leading to enhanced thermal kinetics, and the heat storage/release speed was significantly increased compared to pure AA.
Article
Nanoscience & Nanotechnology
Tien N. H. Lo, Jiyoung Lee, Ha Soo Hwang, In Park
Summary: Anti-icing aluminum surfaces with hierarchical structures and low surface energy silane coatings were successfully fabricated, showing excellent durability and low ice adhesion strength. The synergistic effect of PDMS and FD functional groups contributed to the outstanding anti-icing properties and durability, particularly in low temperatures and high humidity conditions.
ACS APPLIED NANO MATERIALS
(2021)
Article
Polymer Science
Tien N. H. Lo, Sung Woo Hong, Ha Soo Hwang, In Park
Summary: This study fabricated superhydrophobic Al surfaces with excellent durability and anti-icing properties by coating dual-scale rough Al substrates with fluorinated polysilazane (FPSZ). The FPSZ coatings promoted efficient ice removal, decreased ice adhesion strength, suppressed ice nucleation, and exhibited superior durability compared to other coatings.
Article
Energy & Fuels
Giang Tien Nguyen, Ha Soo Hwang, In Park
Summary: In this study, ten phase change materials (PCMs) with different functional groups and alkyl chain lengths were impregnated into mesoporous silica materials (SBA-15) to investigate their effects on the non-freezable layer thickness (T-NL) and crystallization fraction. It was found that PCMs containing alcohols and carboxylic acids had higher T-NL values than those containing alkanes due to hydrogen bonding with the silanol groups. Furthermore, the T-NL values of alcohols were higher than those of carboxylic acids due to stronger hydrogen bonding. As the alkyl chain length increased, the T-NL increased for alcohols but decreased for carboxylic acids. Surface modification of silica with methyl groups weakened the interfacial hydrogen bonds and significantly reduced the T-NL of PCMs, leading to increased crystallization fractions. The enhanced crystallization fractions greatly improved the heat storage capacity of the PCMs.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2022)
Article
Energy & Fuels
Giang Tien Nguyen, Huynh Nguyen Anh Tuan, In Park
Summary: This study investigates the thermal performance of shape-stabilized phase change materials (SSPCMs) by impregnating stearic acid into a porous support. The results show that the SSPCMs exhibit excellent thermal energy storage capacity, thermal cycling stability, and heat transfer retardation properties.
Article
Crystallography
Yang-Su Han, In Park
Summary: In this study, CDEA was successfully intercalated into montmorillonite using both solution and solid-state reaction methods. The acid-base intralayer complexation was found to be responsible for the solid-state intercalation reaction.
Article
Polymer Science
Chanjae Ahn, Pyong Hwa Hong, Juhen Lee, Jinsil Kim, Gyeongmin Moon, Sungkoo Lee, In Park, Haksoo Han, Sung Woo Hong
Summary: In this study, a highly self-healing polymeric coating material (PCM) was developed using charge transfer complex (CTC)-induced multiple interactions between polymeric chains. The PCM demonstrated improved thermal stability, fast self-healing kinetics, and high self-healing efficiency. It also eliminated the trade-off between mechanical strength and self-healing capability.
Article
Polymer Science
Tien N. H. Lo, Ha Soo Hwang, In Park
Summary: This study aimed to verify the impacts of polydimethylsiloxane triethoxysilane (PDMS-TES) and 1H,1H,2H,2H-heptadecafluorodecyl trimethoxysilane (FD-TMS) coatings on a nano-micro hierarchical aluminum surface on the anti-icing performance. The FD-PDMS1.92 coating, which used FD-TMS as the primary coating material and PDMS-TES as the secondary coating material, exhibited superior icephobicity with low ice-adhesion strength and delayed freezing time. This was attributed to the dense coating layer with low surface tension and high mobility that reduced the contact area and interaction between ice and substrate.
Article
Chemistry, Multidisciplinary
Sy Van Vu, Anh-Thu Nguyen, Anh-Thi Cao Tran, Viet-Ha Thi Le, Tien Nu Hoang Lo, Thi H. Ho, Nguyet. N. T. Pham, In Park, Khuong Quoc Vo
Summary: In this study, the controlled synthesis and efficacy of two types of gold-silver core-shell nanoarrays were assessed. The researchers discovered that a specific modification process can lead to the synthesis of gold nanostars with more branches and sharper features, making them more suitable for forming nanoarrays. The core-shell nanoparticles developed in this study showed excellent performance in surface-enhanced Raman scattering (SERS) and were able to effectively detect trace amounts of organic compounds.
NANOSCALE ADVANCES
(2023)
Article
Chemistry, Multidisciplinary
Thu Anh Nguyen, Anh Nguyen Kim Do, Tien Nu Hoang Lo, In Park, Khuong Quoc Vo
Summary: A novel method for preparing SERS-tag nanoparticles was proposed for trace detection of heparin, which showed good stability and biocompatibility. This method allows for rapid detection of heparin with low detection limits and high reproducibility.
Article
Energy & Fuels
Giang T. Nguyen, Ha Soo Hwang, In Park
Summary: In this study, FAPO(4)-5/MgSO4 composites were prepared as new materials with improved volumetric heat storage capacities and lower charging temperatures. The MgSO4 salt particles were impregnated into the micropores and textural pores of FAPO(4)-5, without affecting the crystal structure of the host material. The composites exhibited enhanced water uptake and reduced dehydration temperatures, leading to improved heat storage performance.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2021)
Article
Chemistry, Applied
Lulu Wan, Gan Ye, Yuying Chang, Zhaohan Yang, Guangming Shi, Qiuli Zhang, Jin Wang
Summary: This study developed an efficient approach to upgrade the oxidative desulfurization (ODS) performance of Zr-MOFs with proton stimulation. Experimental results showed that the introduction of protons can significantly improve the ODS efficiency. This work provides a facile and efficient strategy for enhancing the ODS performance of pristine MOFs.
MICROPOROUS AND MESOPOROUS MATERIALS
(2024)
Article
Chemistry, Applied
Qiqi Lu, Xiu-Zhi Wei, Qi Zhang, Xinghua Zhang, Lungang Chen, Jianguo Liu, Yubao Chen, Longlong Ma
Summary: The application of Pd-M bimetallic clusters in the selective hydrogenation reaction was investigated, and the Pd0.6Ni@S-1 catalyst was found to exhibit high selectivity in the conversion of phenylacetylene to styrene. The confinement effect of zeolite inhibited over-hydrogenation and improved the stability of the catalysts. Furthermore, the solvent properties also influenced the product distribution.
MICROPOROUS AND MESOPOROUS MATERIALS
(2024)
Review
Chemistry, Applied
Bo Li, Lumin Hong, Changdi Jing, Xianyang Yue, Huabo Huang, Qianqian Jiang, Jianguo Tang
Summary: MOF materials with adjustable pore structure and polymetallic sites have been explored as electrocatalysts for OER. Bimetallic materials show higher electrocatalytic activity than monometallic materials, while carbon-coated and doped MOF catalysts exhibit stable and good OER activity. The synergistic interaction between polymetallic active sites effectively improves the intrinsic activity of MOF on OER.
MICROPOROUS AND MESOPOROUS MATERIALS
(2024)
Article
Chemistry, Applied
Shichun Gu, Ruyi Wang, Junxiong Zhang, Hairong Dong, Liping Deng, Xue Wang, Yapeng He
Summary: In this study, monodispersed hollow mesoporous organosilica nanospheres with controlled core cavity and mesoporous shell were successfully synthesized. These hollow nanospheres showed a high adsorption capacity for Pb2+ in water solution and exhibited acceptable recycling and stability.
MICROPOROUS AND MESOPOROUS MATERIALS
(2024)
Article
Chemistry, Applied
Lucie Havelkova, Bogdana Bashta, Michaela Vankova, Jiri Zednik, Jiri Brus, Jan Svoboda, Alice Vagenknechtova, Jan Sedlacek
Summary: An atom-economic one-step chain-growth coordination homopolymerization providing high yields of functionalized hyper-cross-linked polyacetylenes with a permanent micro/mesoporous texture and a BET area of up to 1062 m2/g is reported. The homopolymerization is highly compatible with the heteroatom groups of the monomers and allows the preparation of well-defined porous networks with a wide spectrum of univalent groups.
MICROPOROUS AND MESOPOROUS MATERIALS
(2024)
Article
Chemistry, Applied
Shirui Pang, Yuxin Liu, Zhe Zhang, Yuxin Li, Chunguang Li, Zhan Shi, Shouhua Feng
Summary: This study focuses on using a functional separator to suppress the shuttle effect of soluble lithium polysulfides in Li-S batteries. It is found that the functionalized sulfonic acid group not only accelerates the conduction of lithium ions, but also repels polysulfide anions through electrostatic interactions. The performance of the batteries is significantly improved with the use of this functionalized separator.
MICROPOROUS AND MESOPOROUS MATERIALS
(2024)
Article
Chemistry, Applied
Pingping Li, Lei Han, Donghun Kim, Kemal Celebi
Summary: This study presents a fast synthetic strategy for the preparation of high-quality platelike MFI crystals using a thin-wall tubular reactor. The strategy is efficient, time-saving, and can be optimized, making it applicable to the preparation and optimization of other important materials.
MICROPOROUS AND MESOPOROUS MATERIALS
(2024)
Article
Chemistry, Applied
Haitao Yin, Wei Wang, Yuxin Li, Hu Wen, Shuang Chen, Nanzhe Jiang
Summary: This study presents a template-free and solid-state-like crystallisation method for the synthesis of ZSM-5 zeolite, which can be scaled-up in production. Mechanical mixing of starting material components improves the dispersion of materials, leading to ZSM-5 zeolite with high crystallinity and size uniformity.
MICROPOROUS AND MESOPOROUS MATERIALS
(2024)
Article
Chemistry, Applied
Congli Li, Jiang Wang, Zhenfei Wang, Jinxiang Dong, Qi Shi
Summary: This study investigates the evolution and autoreduction behavior of Cu species in CuCl/NaY adsorbent during vacuum thermal activation. It is found that Cu species migrate from supercages to the nearby plane of the six-membered ring connecting the supercage and sod cage during vacuum activation. At 150 degrees C, vacuum autoreduction occurs, resulting in the formation of Cu+Cl- species. The results provide reference for the preparation of pi-complex adsorbents.
MICROPOROUS AND MESOPOROUS MATERIALS
(2024)
Article
Chemistry, Applied
Irena Khatrin, Iman Abdullah, Alan J. Mccue, Yuni K. Krisnandi
Summary: Hierarchical porous system with two types of mesopores provides a solution to the diffusion limitation in conventional zeolites. Cobalt oxide impregnated hierarchical ZSM-5 zeolite samples with intra- and inter-crystalline mesopores were synthesized using two different strategies. The physicochemical properties of the modified catalysts were analyzed, revealing distinct features given by the two mesoporous configurations. Catalytic activity analysis showed that Co-oxide/ZSM-5 with inter-crystalline mesopores exhibited higher activity in methane partial oxidation reaction compared to Co-oxide/ZSM-5 with intra-crystalline mesopores.
MICROPOROUS AND MESOPOROUS MATERIALS
(2024)
Article
Chemistry, Applied
Nataliia Reinders, Martin Durovic, Pavla Honcova, Zaneta Dohnalova, Jana Luxova, Stanislav Slang, Jhonatan Rodriguez-Pereira, Petra S. Sulcova
Summary: This study presents a new method for preparing a microporous Ni2P/C catalyst with high catalytic activity. The redox reaction and carbon matrix formation during high-temperature treatment contribute to the stability and activity of the catalyst. Experimental and analytical results suggest that the microporous structure of the composite plays a crucial role in its catalytic performance. These findings are important for practical applications of efficient hydrogen production by water electrolysis.
MICROPOROUS AND MESOPOROUS MATERIALS
(2024)
Article
Chemistry, Applied
Ana Raquel Bertao, Viktoriya Ivasiv, Cristina Almeida-Aguiar, Patricia R. Correia, Antonio M. Fonseca, Manuel Banobre-Lopez, Fatima Baltazar, Isabel C. Neves
Summary: This study developed a zeolite-based delivery system (ZDS) using silver and 5-Fluorouracil as antimicrobial and antineoplastic agents. The ZDS was characterized and its antimicrobial properties were investigated, showing better antibacterial effectiveness for the ZDS containing both silver and 5-FU.
MICROPOROUS AND MESOPOROUS MATERIALS
(2024)
Article
Chemistry, Applied
Naonobu Katada, Nobuki Ozawa, Etsushi Tsuji, Keigo Kanehara, Akiho Otsuka, Taiga Sakamoto, Kirari Umezawa, Hitoshi Matsubara, Satoshi Suganuma, Momoji Kubo
Summary: First principles calculations were used to investigate the pathway for methylation of benzene with methane catalyzed by MFI type zeolite-supported Co species. The strong adsorption of benzene on Co is found to lower the activation energy for methane dissociation and promote the formation of toluene precursor. The activation energy of methane dissociation is also affected by the Al-Al distance.
MICROPOROUS AND MESOPOROUS MATERIALS
(2024)
Article
Chemistry, Applied
Yuan Liu, An T. Ta, Kyoung Chul Park, Shenyang Hu, Natalia B. Shustova, Simon R. Phillpot
Summary: We use density functional theory to investigate the interactions of cerium, americium, and curium cations with crown ethers. Our results demonstrate that crown ethers can capture cerium, americium, and curium ions, and modifying the crown ether structure by substituting nitrogen atoms for oxygen atoms significantly increases their binding energies with radionuclides.
MICROPOROUS AND MESOPOROUS MATERIALS
(2024)
Article
Chemistry, Applied
Zhengwu Peng, Shixing Wang, Yihui Wu, Xiang Liu, Hongliang Liu, Dekun Zhang, Likang Fu
Summary: An efficient adsorbent for recovery of germanium was prepared and characterized in this study. The adsorption behavior of Ge(IV) on the adsorbent was analyzed, and the results showed that it follows pseudo-secondary kinetic model and Langmuir isotherm model. The adsorbent exhibited good anionic anti-interference ability and can still maintain high adsorption efficiency after repeated adsorption.
MICROPOROUS AND MESOPOROUS MATERIALS
(2024)