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Your search keyword '"Tung, Tran Thanh"' showing total 37 results
Start Over Author "Tung, Tran Thanh" Publisher elsevier bv
37 results on '"Tung, Tran Thanh"'

5. Coupling graphene microribbons with carbon nanofibers : New carbon hybrids for high-performing lithium and potassium-ion batteries

Author

Tung, Tran Thanh, Moussa, Mahmoud, Tripathi, Kumud Malika, Kim, Tae Young, Nine, Md Julker, Nanjundan, Ashok Kumar, Dubal, Deepak, Losic, Dusan, Tung, Tran Thanh, Moussa, Mahmoud, Tripathi, Kumud Malika, Kim, Tae Young, Nine, Md Julker, Nanjundan, Ashok Kumar, Dubal, Deepak, and Losic, Dusan

Abstract

Carbon‑carbon allotropic hybrids exhibit remarkable properties, including exceptional electrochemical charge storage capacities. A novel hybrid material composed of 1D carbon nanofibers (CNF) and 2D graphene micro-ribbons (GMR) was synthesized and incorporated as anodes in Li-ion batteries (LIB) and Potassium-ion batteries (KIB) for improved storage capacity. CNF-GMR material was hybridized simultaneously by one-step chemical vapour deposition (CVD) synthetic process, wherein the CNF were grown on the graphene surface using an iron oxide catalyst. Meanwhile, the GMRs were formed by the catalytic cutting of few-layer graphene. This unique carbon‑carbon allotropic hybrid exhibits excellent structural integrity, good electrical conductivity (718 S/m) and high specific surface area (305.6 g/m2). The as-prepared materials, when used as an anode in batteries, exhibited a highly reversible capacity (598 mAhg−1 and 410 mAhg−1 at 0.10 Ag−1 for LIB and KIB, respectively) with fast charging and discharging capability, and long-term cycling stability with 99% Coulombic efficiency over 1000 cycles.

Published
2022

24. Nitrogen-doped carbon nanotubes decorated silicon carbide as a metal-free catalyst for partial oxidation of H2S

Author

Lam Nguyen-Dinh, Lai Truong-Phuoc, Cuong Pham-Huu, Tung Tran-Thanh, Izabela Janowska, Duong-Viet Cuong, Jean-Mario Nhut, and Dominique Begin

Subjects
Process Chemistry and Technology, Catalyst support, chemistry.chemical_element, Nanotechnology, Carbon nanotube, Catalysis, law.invention, chemistry.chemical_compound, chemistry, Chemical engineering, law, Silicon carbide, Carbon nanotube supported catalyst, Partial oxidation, Carbon, Space velocity
Abstract

Hierarchical metal-free catalyst based on the CVD synthesis of nitrogen-doped carbon nanotubes decorated silicon carbide (N-CNTs/SiC) macroscopic host structure has been prepared. The catalyst was evaluated in the partial oxidation of H 2 S by oxygen into elemental sulfur in a fixed-bed reactor. The catalytic results indicate that the N-CNTs/SiC catalyst exhibits an extremely high desulfurization performance even under severe reaction conditions such as low temperature, high space velocity and at low O 2 -to-H 2 S molar ratio. The high desulfurization performance was attributed to the high effective surface area of the catalyst along with a short diffusion length associated with the nanoscopic dimension of the carbon nanotubes. The N-CNTs/SiC catalyst also displays a high stability as a function of time on stream which could be attributed to the strong anchoring of the nitrogen doping within the carbon matrix. The extrudates shape of the SiC support allows the direct macroscopic shaping of the catalyst for use in conventional fixed-bed reactor without facing problems linked with catalyst handling, transportation and pressure drop across the catalyst bed as encountered with nanoscopic carbon-based catalyst.

Published
2014
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37. Hybridization of MOFs and graphene: A new strategy for the synthesis of porous 3D carbon composites for high performing supercapacitors

Author

Tran Thanh Tung, Campbell J. Coghlan, Mahmoud Moussa, Dusan Losic, Truc Van Ngo, Van Ngo, Truc, Moussa, Mahmoud, Tung, Tran Thanh, Coghlan, Campbell, and Losic, Dusan

Subjects
Materials science, laser scribing, General Chemical Engineering, Composite number, Oxide, chemistry.chemical_element, 02 engineering and technology, 010402 general chemistry, 01 natural sciences, Capacitance, law.invention, chemistry.chemical_compound, law, Electrochemistry, supercapacitor, Porosity, Supercapacitor, Graphene, 021001 nanoscience & nanotechnology, 3D porous graphene, MOFs, 0104 chemical sciences, Chemical engineering, chemistry, Electrode, graphene composites, 0210 nano-technology, Carbon
Abstract

A novel porous 3D-structured carbon composite material with a unique architecture by combining graphene and carbonized metal-organic framework (C-MOF) (HKUST-1) microrods for high performing supercapacitors has been synthesised and characterised. The HKUST-1 microrods were prepared by a new method, converting their diamond-like shape into microrods via mechanical shear mixing in an aqueous solution. Grinding of HKUST-1 and graphene oxide (GO) resulted in the formation of a 3D GO-MOF composite with intercalated HKUST-1 microrods between GO sheets. The composite film was treated by a laser scribing method and created a highly porous, a high surface area (>600 m²/g) and conductive 3D nanostructured composite film (L-rGO-C-MOF) used as electrodes for supercapacitor applications. The prepared film showed a high capacitance of 390 F/g at 5 mV/s, and a cyclic stability of 97.8% at 10 A/g after 5000 cycles. The symmetrical supercapacitor delivered an excellent power density of 8037.5 W/kg with an outstanding energy density of 22.3 Wh/kg confirming a new pathway to design new 3D porous graphene-MOF composites for high-performance energy storage devices. Refereed/Peer-reviewed

Published
2020
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