TAILIEUCHUNG - Study photocatalyst property of ZnO for methylene blue

The commercial nanoparticles ZnO with - P63mc hexagonal structure, particle size of hundreds of nanometer and band gap energy about of eV have been used on photocatalyst for methylene blue. The results showed that: as increasing irradiated time from 30 minutes to 120 minutes by 365 nm radiation of Narva LT 18W ultra - violet lamp, the color of methylene-blue and ZnO mixture were depleted gradually, in which the absorptance and photoluminescence intensity were also decreased. | HNUE JOURNAL OF SCIENCE DOI Natural Sciences 2019 Volume 64 Issue 6 pp. 77-84 This paper is available online at http STUDY PHOTOCATALYST PROPERTY OF ZnO FOR METHYLENE BLUE Bui Hong Van1 Pham Van Ben1 and Tran Minh Thi2 1Faculty of Physics Hanoi University of Science Vietnam National University 2Faculty of Physics University of Education Vietnam National University Abstract. The commercial nanoparticles ZnO with c v- P63mc hexagonal structure particle size of hundreds of nanometer and band gap energy about of eV have been used on photocatalyst for methylene blue. The results showed that as increasing irradiated time from 30 minutes to 120 minutes by 365 nm radiation of Narva LT 18W ultra - violet lamp the color of methylene-blue and ZnO mixture were depleted gradually in which the absorptance and photoluminescence intensity were also decreased. The cause of these phenomena has been studied and explained. The role of ZnO nanopowder photocatalyst for Van Phuc dye wastewater Ha Dong district Hanoi city has been tested by the first step. Keywords Nanoparticles ZnO methylene blue photocatalyst. 1. Introduction Methylene blue is an organic pigment with the molecular formula C16H18N3SCl and the graphic formula present in Figure 1 including 3 aromatic rings containing the color group -C C -C N -C S and the support group color -N CH3 2 1 . This pigment is quite stable imperfect with base has strong redox and oxidation properties so it is widely used in chemistry biology and medicine 1 . However methylene blue is also very toxic because it contains aromatic rings so after being discharged it will pollute the environment and cause bad effects on plants and human health. Figure 1. Stuctural formula of methylene blue Received May 23 2019. Revised June 18 2019. Accepted June 25 2019 Contact Tran Minh Thi email address tranminhthi@ 77 Bui Hong Van Pham Van Ben and Tran Minh Thi For the treatment of organic pigments and

• Hoá học
• Nanoparticles ZnO
• Methylene blue
• P63mc hexagonal structure
• Narva LT 18W ultra
• ZnO mixture
• Perlite granules
• Photocatalytic activity
• ZnO nanoparticles
• Immobilization of ZnO nanoparticles
• Fluorinated perlite granules
• The photocatalytic degradation
• GZO nanoparticles
• Particle size
• Optical properties
• Ga doped ZnO nanoparticles
• Solvothermal method
• Zinc oxide nanoparticles
• Dendrobium officinale Kimura et Migo
• Vitro culture medium
• Effect of ZnO NPs
• pH responsive
• Reactive oxygen species
• Curcumin via phenylboronic
• Breast cancer therapy
• Phenylboronic acid functionalized ZnO nanoparticles
• Green synthesis
• Anticancer activity
• Advanced materials and devices
• Spherical nanoparticles
• Công nghệ hóa
• Photo electrochemically behavours
• ZnO nanoparticles containing
• Polythiophene layers prepared
• Chemically deposition
• Hóa vô cơ
• Photocatalytic degradation
• Esterases contained E tirucalli
• ZnO nanoparticles on properties
• Graphene oxide on properties of acrylic polymer nanocomposite coating
• Polymer nanocomposite coating
• Starting thermal decomposition temperature
• Acrylic polymer matrix
• Education research
• Synthesis of Zno nanoparticles nanofibers
• Luminescence via electrospinning
• Solid state lighting
• Zinc acetate and polyvinyl pyrrolidone
• Journal of Chemistry
• Mulberry leaf extract
• 2 amino 4H chromene
• Aqueous media
• Environmental advances
• Metal based nanoparticles
• Special emphasis
• Uptake mechanism
• ZnO NPs
• Au nanoparticles
• Magnetron sputtering
• ZnO nanorods
• Cylindrical shape
• Hexagonal cross section
• Carbohydrate polymers
• Gallic acid
• Antibacterial textiles
• Durable antibacterial properties
• Duckweed Lemna minor L
• Doped nanoparticles
• Environmental pollution
• Risk assessment
• Plant physiological responses
• Luận án Tiến sĩ
• Luận án Tiến sĩ Hóa học
• Summary of Chemistry doctoral thesis
• ZnO SiO2 nanocomposite
• Er3+ ions
• Energy transfer
• Thermal quenching
• Optical properties of ZnO nanoparticles
• Advanced materials
• Advanced devices
• Tilia tomentosa
• Dye sensitized solar cell
• Microfluidic mixer
• Piezoelectric actuator
• Piezoelectric effect
• ZnO thin films
• Endogenous antioxidant enzymes
• Oxidative injury
• Wistar albino rats
• Induced toxicity
• BMC Chemistry
• Surface modification
• Triton X
• Therapeutic agents
• Nano particle
• CuO and TiO2 nanoparticles
• Particle size analyzer
• Raman spectroscopy
• Copper oxide
• Inorganic chemistry
• Chemistry doctoral thesis
• Summary of chemistry
• Synthesis of Mn doped ZnO
• báo cáo hóa học
• công trình nghiên cứu về hóa học
• tài liệu về hóa học
• cách trình bày báo cáo
• báo cáo khoa học