Enhanced photocatalytic degradation of malachite green by sulfur-doped titanium dioxide/porous reduced graphene oxide

被引：14

作者：

Giang, Nguyen Thi Huong ^{[1
,2
,3
]}

Hai, Nguyen Duy ^{[1
,2
,3
]}

Thinh, Nguyen Tan ^{[1
,2
,3
]}

Tan, Nguyen Ngoc ^{[1
,2
,3
]}

Phuong, Ly Pho ^{[1
,2
,3
]}

Thinh, Doan Ba ^{[1
,2
,3
]}

Duc, Nguyen Van ^{[1
,2
,3
]}

Viet, Vo Nguyen Dai ^{[1
,4
]}

Duy, Huynh Khanh ^{[2
,3
]}

Phong, Mai Thanh ^{[1
,2
,3
]}

Huu, Nguyen ^{[1
,2
,3
]}

机构：

[1] Ho Chi Minh City Univ Technol HCMUT, Key Lab Chem Engn & Petr Proc, Key CEPP Lab, VNU HCM, 268 Ly Thuong Kiet St,Dist 10, Ho Chi Minh City, Vietnam

[2] Ho Chi Minh City Univ Technol HCMUT, Fac Chem Engn, 268 Ly Thuong Kiet St,Dist 10, Ho Chi Minh City, Vietnam

[3] Vietnam Natl Univ Ho Chi Minh City VNU HCM, Linh Trung Ward, Ho Chi Minh City, Vietnam

[4] Nguyen Tat Thanh Univ, Inst Environm Sci, Ho Chi Minh City, Vietnam

来源：

关键词：

Malachite green; Photodegradation; Reduced graphene oxide; Titanium dioxide; Sulfur; METHYLENE-BLUE; NANOCOMPOSITE; REMOVAL;

D O I：

10.1016/j.diamond.2022.109321

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In this study, the sulfur-doped titanium dioxide (S-TiO2) was prepared via the sol-gel method, while the effect of calcination temperature was also investigated. The sulfur-doped titanium dioxide/porous reduced graphene oxide (S-TiO2/rGO) was successfully synthesized via the in-situ method with the support of hydrothermal and ultrasonication processes. The characterization of the materials was also scrutinized via several advanced analysis methods, including X-ray diffraction (XRD), Raman, scanning electron microscopy (SEM), energy-dispersive spectroscopy (EDS), and photoluminescence (PL). In terms of the photodegradation performance, the malachite green (MG) removal efficiency of the S-TiO2/rGO (99.86 %) was higher than that of S-TiO2 (78.88 %). Besides, the chemical oxygen demand (COD) was analyzed to investigate the mineralization of MG in the photodegradation reaction. Concurrently, the removal efficiency of MG was also determined under the illumination of UV light and sunlight. The material shows high reusability after ten consecutive runs. According to the results, the S-TiO2/rGO material exhibits excellent potential in the degradation of organic pollutants in the water reservoirs.

引用

页数：10

共 36 条

[1] Effect of annealing time on structural and optical proprieties of mercury (Hg+2) doped TiO2 thin films elaborated by sol-gel method for future photo-catalytic application [J].