Vietnam Journal of Catalysis and Adsorption
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Research on efficient synthetic method of β- and δ-carbolines using a Copper catalyst
Vietnam Journal of Catalysis and Adsorption - Tập 11 Số 4 - Trang 50-56 - 2022
Methodology for synthesizing of β- and δ-carboline via two steps reaction from 2,3-dibromopyridine and 3,4-dibromopyridine. The intermediate was prepared from the substrate with o-bromophenylboronic acid via site-selective Suzuki-Myaura reaction, then, the final products were obtained by double C-N coupling via the Ulmann reaction of the intermediate with the corresponding amine with copper cataly...... hiện toàn bộ
#C-N coupling #Ulmann reaction #β-carboline #δ-carboline #copper catalysis
Synthesis of Fe-MIL-101 material and evaluation of photocatytic activity under visible light
Vietnam Journal of Catalysis and Adsorption - Tập 7 Số 2 - Trang 49-53 - 2018
In the present work, results synthesis of Fe-MIL-101 material and evaluation of photocatytic activity under visible light. Characterization of Fe-MIL-101 was investigated by using techniques including X-ray diffraction pattern (XRD), scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDX), IR spectra and UV-visible absorption spectrometer. Evaluation of the photocataly...... hiện toàn bộ
Study on adsorption of Cu(II) in aqueous solution using zeolite 3A prepared from rice husk ash
Vietnam Journal of Catalysis and Adsorption - Tập 8 Số 1 - Trang 122-128 - 2019
In the present work, 3A zeolite was formed via a process of exchanging sodium by potassium in 4A zeolite. The 3A zeolite was characterized using X-ray powder diffraction (XRD), scanning electron microscopy (SEM) and X-ray fluorescence (XRF). The chemical composition of the obtained product was 0,60K2O.0,39Na2O.Al2O3.2,02SiO2 with high crystalline. Its particles were completed with a uniform size i...... hiện toàn bộ
Study on phenol adsorption onto Fe-MIL101 in aqueous solution
Vietnam Journal of Catalysis and Adsorption - Tập 7 Số 2 - Trang 54-60 - 2018
In the present work, Fe-MIL101 formed by hydrothermal synthesis with ligand of H2BDC was characterized by physico-chemical mehods including X-ray diffraction (XRD), energy-dispersive X-ray spectroscopy (EDX), scanning electron microscopy (SEM) and N2 adsorption-desorption isotherm (BET). The results showed that the obtained material exhibited rather good crystallization, uniform crystals’ size and...... hiện toàn bộ
A study on the sorption of phenol from aqueous solution by activated red mud derived from alumina processing plant in Tanrai, Lamdong province, Vietnam
Vietnam Journal of Catalysis and Adsorption - Tập 8 Số 1 - Trang 61-68 - 2019
In the present work, red mud derived from TanRai alumina plant was acivated by HCl acid and using as effective adsorbent of phenol from aqueous sloution. The activated red mud was characterized by physico-chemical mehods including X-ray diffraction (XRD), scanning electron microscopy (SEM) and particle distribution. Phenol adsorption ability from aqueous solution onto activated red mud was investi...... hiện toàn bộ
A theoretical study on the electronic and optical properties of M-TiO2/ZnO (M=Li, Na, K, Fe) toward application in photocatalysis
Vietnam Journal of Catalysis and Adsorption - Tập 12 Số 2 - Trang 79-83 - 2024
This study employs the tight-binding density functional method GFN1-xTB to investigate the structural and electronic properties of TiO2-ZnO and TiO2-ZnO composite materials modified by Li, Na, K, and Fe metals. Computational analyses reveal the formation of weak covalent bonds between the TiO2 and ZnO components within the composite system. Doping TiO2-ZnO with metals induces significant alteratio...... hiện toàn bộ
#TiO2-ZnO composite #metal dopant #photocatalyst
Study on the synthesis of heterostructure MoS2/TiO2 material for photocatalytic degradation of 2,4-dichlorophenoxyacetic acid
Vietnam Journal of Catalysis and Adsorption - Tập 10 Số 3 - Trang 113-120 - 2021
Nanoflower MoS2, nanowire TiO2(NNW) and 3D MoS2/TiO2 nano-heterostructure have been synthesized successfully by simple typical hydrothermal reaction method followed by 200oC calcination under an argon atmosphere. The prepared samples are characterized in detail by XRD, FESEM, UV-vis DRS, EDX and BET. The results suggest that the TiO2 NNW is successfully coupled with MoS2 to form the heterojunction...... hiện toàn bộ
#2 #4-D #heterostructure #nanoflower MoS2 #nanowire TiO2
Amberlyst-15, an efficient heterogeneous catalyst for the 1,4-dihydropyridine synthesis
Vietnam Journal of Catalysis and Adsorption - Tập 11 Số 4 - Trang 86-91 - 2022
The paper reported synthesizing 1,4-dihydropyridine (1,4-DHP) from β-ketoester, aromatic aldehyde, and ammonium acetate via a two-step, using heterogeneous catalyst Amberlyst-15 in high yields at room temperature. The method was applied to synthesize some 1,4-DHP derivatives. Moreover, the catalyst was reused at least five times without loss of catalytic activity under eco-friendly conditions.
#1 #4-dihydropyridine #amberlyst-15 #heterogeneous catalyst
Sn doped Hematite Nanorods for High-Performance Photoelectrochemical Water Splitting
Vietnam Journal of Catalysis and Adsorption - Tập 10 Số 1S - Trang 405-409 - 2021
Photoelectrochemical water splitting is of great attention due to its environmentally friendly generation of clean fuels. Hematite (α-Fe2O3) is considered a promising candidate due to its intrinsic properties for the high-performance photoelectrochemical electrode, such as favorable bandgap (2.0–2.2 eV), a suitable energy band position non-toxicity, low cost, and excellent chemical stability. Here...... hiện toàn bộ
#Photoelectrochemical Cell #Water Splitting #Hematite #Sn doping #Photoanode
Synthesis of Ge/C composite as an anode material for lithium ion batteries
Vietnam Journal of Catalysis and Adsorption - Tập 11 Số 4 - Trang 26-30 - 2022
The Ge/C composite was prepared by hydrothermal method using Germani (Ge) and carbon (C) as precursors, in which C was prepared from waste banana peel as biomass source and Ge was obtained from reduction of GeO2 by Mg at 650 oC. The synthesized composite was characterized by X-ray diffraction (XRD), Infrared spectroscopy (IR), Scanning electron microscopy (SEM), Transmission electron microscopy (T...... hiện toàn bộ
#Germanium #Lithium batteries #Activated carbon #biomass
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