Vietnam Journal of Catalysis and Adsorption
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Photocatalytic degradation of Rhodamine-B under visible light region by ZnO nanoparticles loaded on activated carbon made from longan seed biomass
Vietnam Journal of Catalysis and Adsorption - Tập 9 Số 3 - Trang 1-8 - 2021
In the present study, the synthesis of ZnO /LSAC through pyrolysis of the
carbonized material prepared from longan seed, zinc acetate in alkaline medium.
The obtained materials was characterized by means of XRD, SEM, TEM, BET and
UV-Vis-DRS. The XRD patterns of ZnO /LSAC nanocomposites were assigned to
wurtzite structure of ZnO with crystallite size about 15 to 30 nm. SEM and TEM
observations show...
#Zinc oxide #Photodegradation #Longan seed #Biomass carbon #Rhodamine-B
Synthesis of WO3/g-C3N4 Z-scheme heterojunction with novel photocatalytic activity for degradation of residual antibiotics in aquatic environment under visible light
Vietnam Journal of Catalysis and Adsorption - Tập 11 Số 4 - Trang 68-72 - 2022
In the research, we successfully synthesized WO 3 /g-C 3 N 4 Z-scheme
heterojunction for photocatalytic degradation of tetracycline. These synthesized
materials have been characterized by X-ray diffraction (XRD), Scanning electron
microscope (SEM) and Fourier transform infrared spectroscopy (FTIR
Spectroscopy), to investigate their crystal phase, morphology and chemical
compositions. The synthesiz...
#WO3 #g-C3N4 #Photocatalytic #Heterojunction #Tetracycline
A theoretical study on the influence of non-metal (B, C, N, O, F) doping on the electronic and optical properties of graphitic carbon nitride (g-C3N4)
Vietnam Journal of Catalysis and Adsorption - - 2021
A robust and accurate tight-binding quantum chemical method (GFN2-xTB) was
performed to study the electronic and optical properties of graphitic carbon
nitride (g-C3N4) and g-C3N4 modified with non-metal atom (B, C, N, O, F). The
vertical ionization potential, electron affinity and global electrophilicity
indexes were calculated and analyzed. The obtained results show that the doping
of B, C, N, O...
#g-C3N4 #non-metal #electronic structures #optical properties #GFN-xTB
In-vitro antifungal activities of silver-copper complex/chitosan (Ag-Cu@CS) nanoparticles synthesized by in-situ encapsulation
Vietnam Journal of Catalysis and Adsorption - Tập 10 Số 1S - Trang 24-30 - 2021
In this study, silver-copper complex/chitosan (Ag-Cu@CS) nanoparticles were
successfully synthesized by in-situ encapsulation reduction method. The results
show that as-synthesized nanoparticles were quasi spherical in shape with the
average diameter of 7.97 nm, well-dispersed particles in water and stable. The
test phytopathogenic fungi Sclerotium rolfsii, Magnaporthe oryzae K, Botrytis
cinerea, ...
#silver-copper complex/chitosan #in-situ encapsulation #plant protection
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
photocatalytic a...
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...
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...
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...
Synthesis of Fe-doped TiO2 nanotubes by hydrothermal method for photodegradation of methylene blue from aqueous solutions
Vietnam Journal of Catalysis and Adsorption - Tập 11 Số 1 - Trang 29-36 - 2021
Fe-doped TiO 2 nanotubes were prepared by hydrothermal method using ferric
nitrate and commercial TiO 2 powder. The obtained materials were characterized
by means of XRD, TEM, BET, FT-IR and UV-Vis-DRS. The photocatalytic activity was
evaluated based on photodegradation of methylene blue under visible light
irradiation. The results show that Fe 3+ ions might incorporate into the lattice
of TiO 2 n...
#Fe doping #TiO2 nanotubes #hydrothermal synthesis #methylene blue #photodegradation
Effect of iron doping concentration on the structure and photocatalytic activity of ZnO nanosheets under visible light irradiation
Vietnam Journal of Catalysis and Adsorption - Tập 11 Số 2 - Trang 8-15 - 2022
Undoped and Fe-doped ZnO nanosheets have been successfully synthesized by
hydrothermal method using zinc acetate as the source of Zn 2+ , iron(III)
nitrate as the doping source, urea as media to control the solution pH and
polyethylene glycol as structure-directing agents. The obtained materials were
characterized by means of XRD, TEM, BET, FT-IR and UV-Vis-DRS. The results show
that ZnO has a he...
#Fe-doped ZnO #nanosheets #hydrothermal synthesis #methylene blue #photodegradation
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