| 2020 |
Ismail IS, Singh G, Smith P, Kim S, Yang JH, Joseph S, et al., 'Oxygen functionalized porous activated biocarbons with high surface area derived from grape marc for enhanced capture of CO
© 2020 Elsevier Ltd This research demonstrates the conversion of grape marc into highly carbonaceous and oxygen functionalized porous activated biocarbons (PABs) with a high speci... [more] © 2020 Elsevier Ltd This research demonstrates the conversion of grape marc into highly carbonaceous and oxygen functionalized porous activated biocarbons (PABs) with a high specific area for CO2 capture. The materials are synthesized using KOH activation at 800 °C and show a high content of micropores and high specific surface areas which can be easily manipulated by varying the amount of KOH. The optimized material PAB3 obtained using KOH/grape marc biochar ratio of 3 displays the highest specific surface area (2473 m2 g-1), high micropore volume (0.72 cm3 g-1) and a pore diameter of 0.74 nm. Owing to its highly developed porosity and excellent textural parameters, PAB3 exhibits a high CO2 adsorption of 6.2 mmol g-1 at 0 °C/1 bar and 26.8 mmol g-1 at 0 °C/30 bar. It is often considered challenging to synthesize a CO2 adsorbent with all-round performance for CO2 capture under diverse conditions of temperature and pressure. The optimized material PAB3 is also found to be thermally stable which when coupled with its superior CO2 capture performance presents a promising candidature in the field of carbon capture. Furthermore, the excellent features of the synthesized material suggest that these materials could be extended to several other adsorption related fields.
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| 2019 |
Jeong T, Piao H, Park S, Yang JH, Choi G, Wu Q, et al., 'Atomic and electronic structures of graphene-decorated graphitic carbon nitride (g-C3N4) as a metal-free photocatalyst under visible-light', Applied Catalysis B: Environmental, 256 (2019) [C1]
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| 2019 |
Singh G, Ramadass K, Lee JM, Ismail IS, Singh M, Bansal V, et al., 'Convenient design of porous and heteroatom self-doped carbons for CO2 capture', Microporous and Mesoporous Materials, 287 1-8 (2019) [C1]
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| 2019 |
Talapaneni SN, Ramadass K, Ruban SJ, Benzigar M, Lakhi KS, Yang J-H, et al., '3D cubic mesoporous C3N4 with tunable pore diameters derived from KIT-6 and their application in base catalyzed Knoevenagel reaction', CATALYSIS TODAY, 324 33-38 (2019) [C1]
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| 2019 |
Ramadass K, Singh G, Lakhi KS, Benzigar MR, Yang JH, Kim S, et al., 'Halloysite nanotubes: Novel and eco-friendly adsorbents for high-pressure CO2 capture', Microporous and Mesoporous Materials, 277 229-236 (2019) [C1]
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| 2019 |
Singh G, Lakhi KS, Sathish CI, Ramadass K, Yang J-H, Vinu A, 'Oxygen-Functionalized Mesoporous Activated Carbons Derived from Casein and Their Superior CO2 Adsorption Capacity at Both Low- and High-Pressure Regimes', ACS APPLIED NANO MATERIALS, 2 1604-1613 (2019) [C1]
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| 2019 |
Naidu Talapaneni S, Ramadass K, Benzigar MR, Lakhi KS, Yang JH, Ravon U, et al., 'Controlled synthesis of three dimensional mesoporous C3N4 with ordered porous structure for room temperature Suzuki coupling reaction', Molecular Catalysis, 477 (2019) [C1]
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| 2019 |
Pei Y-R, Choi G, Asahina S, Yang J-H, Vinu A, Choy J-H, 'A novel geopolymer route to porous carbon: high CO2 adsorption capacity.', Chemical communications, 55 3266-3269 (2019) [C1]
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| 2018 |
Lakhi KS, Singh G, Kim S, Baskar AV, Joseph S, Yang J, et al., 'Mesoporous Cu-SBA-15 with highly ordered porous structure and its excellent CO2 adsorption capacity', Microporous and Mesoporous Materials, 267 134-141 (2018) [C1]
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| 2018 |
Yang J-H, Pei Y-R, Kim S-J, Choi G, Vinu A, Choy J-H, 'Highly Enhanced Photocatalytic Water-Splitting Activity of Gallium Zinc Oxynitride Derived from Flux-Assisted Zn/Ga Layered Double Hydroxides', INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH, 57 16264-16271 (2018) [C1]
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| 2018 |
Kim H, Park J-W, Lee J-H, Jang S-W, Kim H-J, Choi Y, et al., 'Clay-organic intumescent hybrid system for the synergetic flammability of polymer nanocomposites', JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY, 132 2009-2014 (2018)
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| 2018 |
Lee JM, Yang J-H, Kwon NH, Jo YK, Choy J-H, Hwang S-J, 'Intercalative hybridization of layered double hydroxide nanocrystals with mesoporous g-C3N4 for enhancing visible light-induced H-2 production efficiency', DALTON TRANSACTIONS, 47 2949-2955 (2018)
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| 2016 |
Yang J-H, Pei Y-R, Piao H, Vinu A, Choy J-H, 'Molecular Orientation of Intercalants Stabilized in the Interlayer Space of Layered Ceramics: 1-D Electron Density Simulation', JOURNAL OF THE KOREAN CERAMIC SOCIETY, 53 417-428 (2016)
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| 2016 |
Park D-H, Yang J-H, Vinu A, Elzatahry A, Choy J-H, 'X-ray diffraction and X-ray absorption spectroscopic analyses for intercalative nanohybrids with low crystallinity', ARABIAN JOURNAL OF CHEMISTRY, 9 190-205 (2016)
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| 2016 |
Yang J-H, Lee J-H, Ryu H-J, Elzatahry AA, Alothman ZA, Choy J-H, 'Drug-clay nanohybrids as sustained delivery systems', APPLIED CLAY SCIENCE, 130 20-32 (2016)
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| 2015 |
Choi G, Yang J-H, Park G-Y, Vinu A, Elzatahry A, Yo CH, Choy J-H, 'Intercalative Ion-Exchange Route to Amino Acid Layered Double Hydroxide Nanohybrids and Their Sorption Properties', EUROPEAN JOURNAL OF INORGANIC CHEMISTRY, 925-930 (2015)
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| 2015 |
Yang J-H, Piao H, Vinu A, Elzatahry AA, Paek S-M, Choy J-H, 'TiO2-pillared clays with well-ordered porous structure and excellent photocatalytic activity', RSC ADVANCES, 5 8210-8215 (2015)
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| 2015 |
Yang J-H, Zhang W, Ryu H, Lee J-H, Park D-H, Choi JY, et al., 'Influence of anionic surface modifiers on the thermal stability and mechanical properties of layered double hydroxide/polypropylene nanocomposites', JOURNAL OF MATERIALS CHEMISTRY A, 3 22730-22738 (2015)
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| 2015 |
Kang H, Kim H-J, Yang J-H, Kim T-H, Choi G, Paek S-M, et al., 'Intracrystalline structure and release pattern of ferulic acid intercalated into layered double hydroxide through various synthesis routes', APPLIED CLAY SCIENCE, 112 32-39 (2015)
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| 2015 |
Kim J-Y, Yang J-H, Lee J-H, Choi G, Park D-H, Jo M-R, et al., '2D Inorganic-Antimalarial Drug-Polymer Hybrid with pH-Responsive Solubility', CHEMISTRY-AN ASIAN JOURNAL, 10 2264-2271 (2015)
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| 2013 |
Park D-H, Hwang S-J, Oh J-M, Yang J-H, Choy J-H, 'Polymer-inorganic supramolecular nanohybrids for red, white, green, and blue applications', PROGRESS IN POLYMER SCIENCE, 38 1442-1486 (2013)
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| 2013 |
Kim MH, Park D-H, Yang J-H, Choy YB, Choy J-H, 'Drug-inorganic-polymer nanohybrid for transdermal delivery', INTERNATIONAL JOURNAL OF PHARMACEUTICS, 444 120-127 (2013)
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| 2013 |
Yang J-H, Jung H, Kim SY, Yo CH, Choy J-H, 'Heterostructured Layered Aluminosilicate-Itraconazole Nanohybrid for Drug Delivery System', JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY, 13 7331-7336 (2013)
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| 2013 |
Yang J-H, Kim G, Domen K, Choy J-H, 'Tailoring the Mesoporous Texture of Graphitic Carbon Nitride', JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY, 13 7487-7492 (2013)
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| 2012 |
Park M-C, Kim H, Park D-H, Yang J-H, Choy J-H, 'Ketoprofen-LDH Nanohybrid for Transdermal Drug Delivery System', BULLETIN OF THE KOREAN CHEMICAL SOCIETY, 33 1827-1828 (2012)
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| 2011 |
Yang J-H, Lee H-S, Paek S-M, Han Y-S, 'SiO2-Fe2O3-pillared Clay Nanohybrid with an Enhanced Gas Removal Property', CHEMISTRY LETTERS, 40 1242-1243 (2011)
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| 2010 |
Yuliati L, Yang J-H, Wang X, Maeda K, Takata T, Antonietti M, Domen K, 'Highly active tantalum(v) nitride nanoparticles prepared from a mesoporous carbon nitride template for photocatalytic hydrogen evolution under visible light irradiation', JOURNAL OF MATERIALS CHEMISTRY, 20 4295-4298 (2010)
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| 2010 |
Min S-H, Yang J-H, Kim JY, Kwon Y-U, 'Development of white antibacterial pigment based on silver chloride nanoparticles and mesoporous silica and its polymer composite', MICROPOROUS AND MESOPOROUS MATERIALS, 128 19-25 (2010)
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| 2009 |
Kim D-S, Yang J-H, Balaji S, Cho H-J, Kim M-K, Kang D-U, et al., 'Hydrothermal synthesis of anatase nanocrystals with lattice and surface doping tungsten species', CRYSTENGCOMM, 11 1621-1629 (2009)
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| 2008 |
Lee H, Yang J-H, Lee H-J, Park J-Y, Lee K-R, Kwon Y-U, 'Facile and adaptable synthesis method of mesostructured silica thin films', JOURNAL OF MATERIALS CHEMISTRY, 18 1881-1888 (2008)
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| 2007 |
Yang J-H, Kim M-K, Son J-H, Cho H-J, Kwon Y-U, 'Novel phosphotungstate-titania nanocomposites from aqueous media', BULLETIN OF THE KOREAN CHEMICAL SOCIETY, 28 1097-1103 (2007)
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| 2007 |
Yang J-H, Han Y-S, Park M, Park T, Hwang S-J, Choy J-H, 'New inorganic-based drug delivery system of indole-3-acetic acid-layered metal hydroxide nanohybrids with controlled release rate', CHEMISTRY OF MATERIALS, 19 2679-2685 (2007)
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| 2006 |
Liu S, Yang JH, Choy JH, 'Microporous SiO(2)-TiO(2) nanosols pillared montmorillonite for photocatalytic decomposition of methyl orange', JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY, 179 75-80 (2006)
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| 2006 |
Park JH, Yang JH, Yoon JB, Hwang SJ, Choy JH, 'Intracrystalline structure and physicochemical properties of mixed SiO2-TiO2 sol-pillared aluminosilicate', JOURNAL OF PHYSICAL CHEMISTRY B, 110 1592-1598 (2006)
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| 2006 |
Hur SG, Kim TW, Hwang SJ, Hwang SH, Yang JH, Choy JH, 'Heterostructured nanohybrid of zinc oxide-montmorillonite clay', JOURNAL OF PHYSICAL CHEMISTRY B, 110 1599-1604 (2006)
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| 2003 |
Yang JH, Lee SY, Han YS, Park KC, Choy JH, 'Efficient transdermal penetration and improved stability of L-ascorbic acid encapsulated in an inorganic nanocapsule', BULLETIN OF THE KOREAN CHEMICAL SOCIETY, 24 499-503 (2003)
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| 2001 |
Yang JH, Han YS, Choy JH, Tateyama H, 'Intercalation of alkylammonium cations into expandable fluorine mica and its application for the evaluation of heterogeneous charge distribution', JOURNAL OF MATERIALS CHEMISTRY, 11 1305-1312 (2001)
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| 2000 |
Hwang YJ, Kim SJ, Park S, Yang JH, Kim H, Choy JH, 'Photoactivity of CdS particles grown in Pt-loaded zeolite Y', Bulletin of the Korean Chemical Society, 21 187-192 (2000)
An integrated photocatalyst was prepared and its photoelectrocatalytic behavior for solar energy conversion was investigated. To make an integrated photocatalyst for hydrogen evol... [more] An integrated photocatalyst was prepared and its photoelectrocatalytic behavior for solar energy conversion was investigated. To make an integrated photocatalyst for hydrogen evolution, Pt and CdS clusters were embedded in zeolite as a cocatalyst and a photocatalyst, respectively. Pt particles were embedded in zeolite Y by ion exchange reaction with Pt (NH3)42+ and activation and reduction processes were followed. CdS clusters in zeolite Y cages were prepared by ion exchange reaction with Cd2+ and sulfurization with Na2S in aqueous solution was followed. The existence of CdS clusters in the cavities of zeolite Y was detected by IR spectra. UV absorption edges of the samples prepared show blue shifts about 0.03-0.12 eV from the edge of bulk CdS, which is an indication of CdS clusters formed in zeolite Y. The pore structure of samples was analyzed by BET and Langmuir method. The solar energy conversion into hydrogen was investigated, where sodium tartrate solution was used as a hole scavenger. We could observe that 1 wt% Pt supported sample was the most effective photocatalyst for hydrogen evolution (62 µL/mg after 4 hour reaction).
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| 2000 |
Kim J, Lee M, Yang JH, Choy JH, 'Photophysical properties of hemicyanine dyes intercalated in Na-fluorine mica', JOURNAL OF PHYSICAL CHEMISTRY A, 104 1388-1392 (2000)
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