Synthesis of TiO2/g-C3N4 material for visble light driven photocatalytic degradation of methylene blue

Synthesis of TiO2/g-C3N4 material for visble light driven photocatalytic degradation of methylene blue
Đặng Thị Ngọc Hoa1,2,*, Nguyễn Thị Thanh Tú3
1Trường Đại học Y dược Huế, Đại học Huế
2Trường Đại học Khoa học, Đại học Huế
3Trường Đại học Văn Lang, thành phố Hồ Chí Minh
*Email: This email address is being protected from spambots. You need JavaScript enabled to view it.
ABSTRACT
In this study, an efficient strategy for the synthesis of solvent titanium dioxide and titanium dioxide/graphitic carbon nitride (TiO2/g-C3N4) heterostructure photocatalyst was applied to fabricate a kind of visible-light-driven photocatalyst. The obtained samples were characterised by means of X-ray diffraction, infrared spectroscopy, ultraviolet–visible spectroscopy, ultraviolet-visible diffuse reflectance spectroscopy and photoluminescence. The heterostructure shows higher absorption edge towards harvesting more solar energy compared with pure TiO2 and pure g-C3N4 respectively. The photocatalytic behaviour under visible light and kinetics of the TiO2/g-C3N4 catalyst via methylene blue degradation were addressed. The results showed that the introduction of solvent titanium dioxide into g-C3N4 enhanced the photocatalytic activity in the visible light region. TiO2/g-C3N4 is potential visible light driven photocatalyst for the organic substances degradation in aqueous solutions.

Study on the preparation of TiO2/SiO2 and the treatment capacity of 2-chloroethyl ethyl sulfide on the surface of sensitive equipment and components

Study on the preparation of TiO2/SiO2 and the treatment capacity of 2-chloroethyl ethyl sulfide on the surface of sensitive equipment and components
Hoàng Kim Huế1,*, Lê Văn Long, Hoàng Thanh Thái, Lê Minh Thảo
Viện Hóa học Môi trường quân sự
*Email: This email address is being protected from spambots. You need JavaScript enabled to view it.
ABSTRACT
The treatment of the surface of sensitive equipment and components, cotaminated by chemical agents is an important issue for the safety of population and security of structures. Material TiO2/SiO2 prepared and dispersed in a solvent system of ethanol/iso propanol/diethoxy methane has the good treatment with chloroethyl ethyl sulfide (2-CEES) on the surface of sensitive equipment and components. Treatment capacity depends on the tested surface and the number of treatments. Treatment capacity decreases from flat glass surface> sensitive component surface> pular rubber surface> chlorobutyl rubber surface. The treatment does not affect the performance of sensitive components.

Effect of synthesis conditions on methylene blue adsorption capacity of electrochemically preparated graphene

Effect of synthesis conditions on methylene blue adsorption capacity of electrochemically preparated graphene
Phạm Văn Hảo1,5, Hà Xuân Linh2, Phùng Thị Oanh3, Phan Ngọc Hồng1, Nguyễn Nhật Huy4, Đặng Văn Thành1,3,, Nguyễn Văn Đăng6,*
1 Học viện khoa học và Công nghệ, Viện Hàn lâm Khoa học và Công nghệ Việt Nam;
2 Khoa Quốc tế, Đại học Thái Nguyên;
3 Trường Đại học Y-Dược, Đại học Thái Nguyên;
4 Trường Đại học Bách khoa, ĐHQG-HCM;
5 Trường Đại học Công nghệ Thông tin và Truyền thông, Đại học Thái Nguyên;
6 Trường Đại học Khoa học, Đại học Thái Nguyên.
*Email: This email address is being protected from spambots. You need JavaScript enabled to view it.
ABSTRACT
This report presents the effect of synthesis conditions on the synthesis of graphene nanosheets via electrochemical exfoliation method for adsorbing methylene blue from aqueous solution. Oxygen-containing functional groups and defects in the material were characterized by Raman and X-ray photoelectron spectroscopy (XPS). As a result, by using voltage of 15 V, (NH4)2SO4 (5%, 250 mL) and KOH (7.5%, 250 mL), the obtained material showed the highest MB adsorption capacity due to the high densities of oxygen-containing groups and defects comparison to other conditions.

Liên kết Website

Viện Kỹ thuật Hóa họcHội hóa học Việt NamTập đoàn Dầu khí Quốc gia Việt NamHội đồng chức danh Giáo sư Nhà nướcAmerican Chemical SocietyScienceDirectSpringerWiley Online LibraryScimagoJRWeb of ScienceASEAN CITATION INDEXOlympic Hóa học sinh viên Toàn quốc 2018
You are here: Home For Authors Inpress