In this work, metal-doped titanium dioxide (TiO2) was synthesised with the aim of improving photocatalytic degradation and antimicrobial activities; TiO2 doped copper (Cu) ranging from 0.1 to 1.0 wt%. The physical chemical properties Cu-doped nanoparticles were characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM), Brunauer-Emmett-Teller method (BET) diffuse reflection spectroscopy (DRS). results revealed that anatase phase maintained well in all samples. No...

Abstract The nanocomposite of BiVO 4 -based material has been synthesized by one-step solvent method. morphological, physical, chemical properties the have investigated. results revealed that surface area , /SiO 2 and /GO was 11.13, 28.47 43.93 m /g, respectively. structural test XRD proved nanocomposites were monoclinic phase bismuth vanadate. Adsorption photocatalytic degradation two main mechanisms strongly related to pollutant removal efficiency (i.e., methylene blue phenol). obtained...

This study utilized MIKE 11 to quantify the spatio-temporal dynamics of water quality parameters (Biochemical Oxygen Demand (BOD5), Dissolved (DO) and temperature) in Long Xuyen Quadrangle area Vietnamese Mekong Delta. Calibrated for year 2019 validated 2020, developed model showed a significant agreement between observed simulated values parameters. Locations near cage culture areas exhibited higher BOD5 than sites close pond/lagoon due effects numerous point sources pollution, including...

The properties and photocatalytic performance of anatase nanoparticles pure TiO2 a core–shell structure on calcined vetiver grass leaves have been compared. Samples were fabricated by sol‐gel heating at 450 °C for 5h.The comparison was based data X‐ray diffraction(XRD), UV‐Vis spectrophotometry, photoluminescence, transmission electron microscopy, specific surface area measurement, pore volume assessment, methylene blue degradation testing. results showed that the consisted agglomerated...

This work demonstrates a novel method to deposit an antibacterial TiO2 thin film on polymer substrate at room temperature. A combination of sol–gel and photon assistance was used in the experiment order avoid any thermal processes crystallization. The morphological photograph samples indicated that perfectly coated PVC without cracks or pinholes. Chemical analysis by EDS XPS reported consisted titanium (Ti), oxygen (O), carbon (C). Raman spectrum proved anatase phase and, furthermore, it...

Determining the degradation mechanism of phenol under illumination titanium dioxide (TiO 2 ) is main task in this present work.The experiment carried out with 100 ppm solution and 0.9 g/L TiO UV-C light.The COD UV-Vis measurement were applied work to evaluate efficiency removal.The results showed that photocatalysis removed effectively from water after 24 hours illumination.In first 16 hours, there was a slight decrease value.However, it decreased dramatically illumination.Similarly, result...

In the present work, a nanocomposite of bismuth vanadate (BiVO4) and Graphene oxide (GO) was synthesized successfully by using hydrothermal process. The properties BiVO4/GO were examined various techniques including X-ray diffraction (XRD) transmission electron microscopy (TEM). XRD data indicated that pure BiVO4 nanoparticles had monoclinic structure. Similarly, same structure without peak GO due to from reduced during TEM images revealed particles integrated effectively with sheets....

Agitation was a significant factor in achieving the high performance of electrocoagulation (EC) system. Three EC systems with four parellal monopolar Al electrodes were established to clarify influence agitation methods on pollutants removal efficiency; magnetic stirring, continuous aeration, and combination stirring aeration. The aim this work maximize industrial wastewater treatment short detention time understand mechanisms that occurred different systems. coolant from aluminum product...

This study evaluated the groundwater levels (GWLs) and quality of Can Tho city (CTC) using statistical analysis a Groundwater Quality Index (GWQI). In addition, recharge potential from rainfall was investigated for period 2001-2009. The results show that GWLs decreased rapidly in 2000-2010 gradually 2012-2018 both Middle-upper Pleistocene (qp2-3) Upper (qp3) aquifers. is due to excessive withdrawals, especially meet demands production facilities city’s industrial zones. this regard, Decree...

The dye-pigments and organic compounds are known as significant pollutants in wastewater of textile industrial. Among treatment technologies, the photocatalysis using TiO 2 nano particles has potential on-site process for removing compounds, due to no hazardous waste inexpensive. In this work, nanoparticles were synthesized by two different methods hydrothermal sol-gel. Nanoparticle method contained pure anatase phase similar sol-gel method. However, provided higher specific surface area...

Protected places such as nature reserves (NRs) are used to maintain ecological balance, biodiversity, and support surrounding ecosystems. However, the development operation of infrastructure dikes sluice gates in NRs, seen Vietnamese Mekong Delta (VMD), often adversely affects hydrological regime water quality at both local regional scales. This study analyzes consequences a constructed dike system on NRs through an integrated approach including hydrochemical analysis (using descriptive...

In the present work, mesoporous particles was produced by calcining vetiver leaves at 600°C.Then, it coated TiO 2 using sol-gel method.The crystal structure of particle investigated X-Ray Diffraction (XRD) technique.The organic dye removal efficiency were examined photodegradation methylene blue (MB) under UV-A irradiation.The pure reached only 40% in 6 hours irradiation time.On other hand, -coated got >90% hour time.It can be said that higher than particles.This outcomes suggested adding...