Prof. Bhupendra Kumar Singh
Division of Advanced Nuclear Engineering, Pohang University of Science and Technology, Pohang, Gyeongbuk, Republic of Korea
Research Professor
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Academic Career Length
19Years (2008-Present)
(Calculated once Scilit publication data is synced: current year − year of first publication + 1)
Representative Publications
View All Publications24 June 2014 in Nature Communications
Journal Article
DXDongdong Xu
Dongdong Xu
YMYanhang Ma
Yanhang Ma
ZJZhifeng Jing
Zhifeng JingLHLu Han
Lu HanBhupendra Kumar Singh
Shunai Che +6
One of the challenges in material science has been to prepare macro- or mesoporous zeolite. Although examples of their synthesis exist, there is a need for a facile yet versatile approach to such hierarchical structures. Here we report a concept for designing a single quaternary ammonium head amphiphilic template with strong ordered self-assembling ability through π–π stacking in hydrophobic side, which stabilizes the mesostructure to form single-crystalline mesostructured zeolite nanosheets. The concept is demonstrated for the formation of a new type of MFI (zeolite framework code by International Zeolite Association) nanosheets joined with a 90° rotational boundary, which results in a mesoporous zeolite with highly specific surface area even after calcination. Low binding energies for this self-assembling system are supported by a theoretical analysis. A geometrical matching between the arrangement of aromatic groups and the zeolitic framework is speculated for the formation of single-crystalline MFI nanosheets.
22 June 2021 in ACS ES&T Engineering
Journal Article
Bhupendra Kumar SinghMHMuhammad Aamir Hafeez
Muhammad Aamir HafeezHKHyojoo Kim
Hyojoo KimSHSeokju Hong
Seokju HongJKJaeeun Kang
Jaeeun Kang
Wooyong Um31 July 2018 in Chemical Communications
Journal Article
TYTae-Ung Yoon
Tae-Ung Yoon
SBSeung Bin Baek
Seung Bin BaekDKDongwook Kim
Dongwook Kim
EKEun-Jung Kim
Eun-Jung Kim
WLWang-Geun Lee
Wang-Geun LeeKKKwang S. Kim
Kwang S. Kim +3
A microporous hydrogen-bonded organic framework HOF-BTB efficiently separates C2hydrocarbons from C2/CH4binary gas mixtures under dynamic mixture flow conditions.
16 February 2019 in Rare Metals
Journal Article
12 December 2014 in Chemistry of Materials
Journal Article
Bhupendra Kumar SinghDXDongdong Xu
Dongdong Xu
LHLu Han
Lu HanJDJian Ding
Jian Ding
YWYimeng Wang
Yimeng WangShunai CheJournal Article
Bhupendra Kumar SinghYKYongseok Kim
Yongseok KimSKSeungdon Kwon
Seungdon Kwon
Kyungsu NaCurrently, zeolites are one of the most important classes of heterogeneous catalysts in chemical industries owing to their unique structural characteristics such as molecular-scale size/shape-selectivity, heterogenized single catalytic sites in the framework, and excellent stability in harsh industrial processes. However, the microporous structure of conventional zeolite materials limits their applications to small-molecule reactions. To alleviate this problem, mesoporous zeolitic frameworks were developed. In the last few decades, several methods have been developed for the synthesis of mesoporous zeolites; these zeolites have demonstrated greater lifetime and better performance than their bulk microporous counterparts in many catalytic processes, which can be explained by the rapid diffusion of reactant species into the zeolite framework and facile accessibility to bulky molecules through the mesopores. Mesoporous zeolites provide versatile opportunities not only in conventional chemical industries but also in emerging catalysis fields. This review presents many state-of-the-art mesoporous zeolites, discusses various strategies for their synthesis, and details their contributions to catalytic reactions including catalytic cracking, isomerization, alkylation and acylation, alternative fuel synthesis via methanol-to-hydrocarbon (MTH) and Fischer–Tropsch synthesis (FTS) routes, and different fine-chemical syntheses.
About Me
Bhupendra Kumar Singh is working as a Research Professor in the Division of Advanced Nuclear Engineering at Pohang University of Science and Technology (POSTECH), Pohang, South Korea. His research work encompasses “synthesis, characterization, and application of porous materials (zeolites, silicas, metal oxides, metal organic frameworks (MOF), etc.) in heterogeneous catalysis and treatment of wastewater/hazardous wastes”. He has extensively worked on synthesis of various materials, including zeolites (MFI type (ZSM-5), Mordenite, LTA, etc.), metal oxides (Al2O3, TiO2, ZrO2, and SnO2), MOFs (UiO-66, and ZIF), and silicas (MCM-41, SBA-15, and KIT-6) with various morphologies, sizes, and porosities (micro/mesoporous) in the presence and absence of different surfactant molecules. After synthesis, the materials were characterized using several techniques; XRD, N2 adsorption/desorption isotherms, FT-IR, SEM, EDS, TGA, NH3-TPD, MAS 27Al NMR, ICP-OES, XPS, HR-TEM, EDX, and HAADF/STEM, and were potentially applied in various heterogeneous catalysis. In addition, the synthesized materials were used for sequestration (removal) of radionuclides/metal ions from (simulated) waste solutions under various physicochemical conditions. Modelling software(s), MINTEQ-2 and MEDUSA’ were used for the aqueous speciation of (metal)ions under the defined conditions. Currently, he is engaged in treatment of radioactive wastes and their immobilization waste forms.