Sodium titanium oxide/zinc oxide (STO/ZnO) photocomposites for efficient dye degradation applications

被引：0

作者：

Zayed, Mohamed ^{[2
]}

Nasr, Mervat ^{[2
,3
]}

Aljaafreh, Mamduh J. ^{[1
]}

Marashdeh, Mohammad ^{[3
]}

Al-Hmoud, M. ^{[1
]}

Shaban, Mohamed ^{[2
]}

Rabia, Mohamed ^{[2
,4
,5
]}

Tarek, Amna ^{[3
]}

Ahmed, Ashour M. ^{[1
,2
]}

机构：

[1] Imam Mohammad Ibn Saud Islamic Univ IMSIU, Coll Sci, Phys Dept, Riyadh 11623, Saudi Arabia

[2] Beni Suef Univ, Fac Sci, Phys Dept, Nanophoton & Applicat Lab, Bani Suwayf 62514, Egypt

[3] Beni Suef Univ, Fac Sci, Chem Dept, Bani Suwayf 62514, Egypt

[4] Islamic Univ Madinah, Fac Sci, Dept Phys, POB 170, AlMadinah Almonawara 42351, Saudi Arabia

[5] Beni Suef Univ, Fac Sci, Chem Dept, Nanomat Sci Res Lab, Bani Suwayf 62514, Egypt

来源：

GREEN PROCESSING AND SYNTHESIS | 2024年 / 13卷 / 01期

关键词：

sodium titanium oxide; zinc oxide; energy gap; photocatalytic degradation; organic dye; ENHANCED ADSORPTIVE REMOVAL; AQUEOUS-SOLUTION; METHYLENE-BLUE; PHOTOCATALYTIC DEGRADATION; TITANATE NANOTUBES; WATER; ZNO; ORANGE;

D O I：

10.1515/gps-2023-0272

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

In this study, sodium titanium oxide (Na2Ti3O7, termed STO) and sodium titanate/zinc oxide (STO/ZnO) photocomposites were prepared for the first time. A low-cost hydrothermal technique was employed to fabricate the STO/ZnO photocomposites with varying ZnO weight ratios: STO/0.25ZnO, STO/0.5ZnO, and STO/ZnO. The prepared photocomposites were investigated for the decomposition of methylene blue dye (MB) under natural visible light illumination and an artificial tungsten halogen lamp. The STO/ZnO photo-composite exhibits high photodegradation performance, which can be correlated with its properties and characterization. The X-ray diffraction analysis reveals that STO has an average crystallite size of 69.1 nm, ZnO has an average crystallite size of 41.4 nm, and the combination of STO/ZnO results in a reduced average crystallite size of 39.5 nm. The bandgap (Eg) of STO/ZnO is 2.53 eV after controlling the ZnO weight ratio. The photocatalytic efficiency of the STO/ZnO photocomposite was 100% for MB within 60 min of solar light irradiation, compared to 33.7% for STO and 25.8% for ZnO. The effect of STO/ZnO dosage and MB concentration was investigated. Furthermore, the kinetics and mechanisms of the photocatalytic process were examined. The results suggest that STO/ZnO has promising potential for practical applications in wastewater treatment.

引用

页数：19

共 71 条

[1] Insight into the antimicrobial and photocatalytic properties of NiO impregnated MCM-48 for effective removal of pathogenic bacteria and toxic levofloxacin residuals [J].