Article
Materials Science, Ceramics
Charitha Thambiliyagodage, Shanitha Mirihana
Summary: This study successfully synthesized Fe and Cu co-doped TiO2 nanoparticles and investigated their photocatalytic activity. Doping with Fe and Cu can enhance the visible light sensitivity of TiO2, but increasing dopant concentration leads to a decrease in photocatalytic activity.
JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY
(2021)
Article
Chemistry, Physical
Yuanting Wu, Mengyao Guan, Xiaojing Chang, Jinrong Wang, Shuming Xu
Summary: We constructed a homogeneous double-layer TiO2-ZrO2-SiO2 photocatalyst with multi-heterojunction (D-TZS) using a simple sol-gel method, which effectively improves the photocatalytic property. By investigating various factors, we found that D-TZS can degrade Rh B by about 99.6% within 40 minutes and almost completely degrade it within 60 minutes. This is attributed to the homogeneity, multiple heterojunctions, and oxygen vacancies of D-TZS.
JOURNAL OF MOLECULAR LIQUIDS
(2023)
Article
Chemistry, Multidisciplinary
Rajakumar Ananthakrishnan, Priyanka Das
Summary: Remediation of water pollutants using visible light-aided photocatalysis is a promising technique. In this study, a TiO2-based hybrid material with visible light activity and magnetic separability was developed for the degradation of bisphenol A (BPA) in water. The material showed high efficiency in the photodegradation of BPA under visible light irradiation.
NEW JOURNAL OF CHEMISTRY
(2022)
Article
Materials Science, Ceramics
Swapnil A. Jadhav, Mangesh Khedkar, Deepali D. Andhare, S. B. Gopale, K. M. Jadhav
Summary: Ni-Zn ferrite nanoparticles were prepared using sol-gel auto combustion technique and applied for the removal of Rhodamine B from industrial waste-water. The nanoparticles were characterized for structure, crystalline size, and optical properties, showing good photocatalytic degradation performance under sunlight.
CERAMICS INTERNATIONAL
(2021)
Article
Materials Science, Multidisciplinary
Siripond Phromma, Tuksadon Wutikhun, Panita Kasamechonchung, Suchinda Sattayaporn, Tippabust Eksangsri, Chaweewan Sapcharoenkun
Summary: Silver modified titanium dioxide (Ag-TiO2) nanoparticles with different loading were synthesized and their effects on the structure of TiO2 were investigated. The presence of Ag+-ion in TiO2 structure was confirmed, resulting in Ag substitution and oxygen vacancy in TiO2. XRD and XANES findings revealed the phase transformation and modification of lattice parameters of anatase and rutile phases in the TiO2 structure following Ag doping, indicating the successful introduction of Ag into TiO2. Low Ag doping contents showed better photocatalytic activity than higher doping contents under visible light.
MATERIALS RESEARCH BULLETIN
(2022)
Article
Green & Sustainable Science & Technology
Xuan-xuan Zhang, Ying-guan Xiao, Shun-sheng Cao, Zheng-liang Yin, Zhao-Qing Liu
Summary: A new confined ternary photocatalyst TiO2@Bi2O3@TiO2 was designed by embedding Bi2O3 into hierarchical hollow TiO2 spheres. This photocatalyst exhibited strong visible-light absorption and efficient charge separation, enabling the complete degradation of tetracycline under visible light. The introduction of confinement effect significantly improved the cyclic stability of the catalyst.
JOURNAL OF CLEANER PRODUCTION
(2022)
Article
Chemistry, Inorganic & Nuclear
Anshu Kumar Singh, Pramod Kumar Vishwakarma, Sumit Kumar Pandey, Raghvendra Pratap, Rajiv Giri, Anchal Srivastava
Summary: Organic pollutants from the textile industries are polluting water resources and posing a threat to aquatic ecosystems. High-performance photocatalysts that can be activated by visible light are needed. TiO2 has been widely studied as a photocatalyst, but its limitations have led researchers to explore modifications. In this study, MWCNTs were used to modify TiO2 and compared for their ability to degrade methylene blue dye under visible light irradiation. The in-situ CNTs-TiO2 nanocomposite showed higher degradation efficiency and stability due to strong chemical interactions with MWCNTs.
INORGANIC CHEMISTRY COMMUNICATIONS
(2023)
Article
Green & Sustainable Science & Technology
Zhengliang Yin, Xuanxuan Zhang, Xinhua Yuan, Wenxian Wei, Yingguan Xiao, Shunsheng Cao
Summary: A novel multi-heterojunction TiO2@Bi2O3 (MHTB) hollow photocatalyst was successfully constructed in this study, which showed improved photoelectrochemical performance, excellent anti-interference capability, and stability. The formation of multiple heterojunctions facilitated faster separation and transfer of photoinduced charge carriers. This finding opens up new possibilities for developing highly active photocatalysts for efficient pollutant removal and environmental remediation.
JOURNAL OF CLEANER PRODUCTION
(2022)
Article
Engineering, Chemical
Rui Yu, Yanling Yang, Zhiwei Zhou, Xing Li, Jingfeng Gao, Nan Wang, Jiaqi Li, Yongwang Liu
Summary: In this study, a ternary heterojunction composite of bismuth oxide, titanium dioxide, and reduced graphene oxide was successfully synthesized via a one-step hydrothermal process. The composite exhibited strong visible-light responsiveness and high separation efficiency of photogenerated carriers. It showed excellent degradation performance towards tetracycline and outperformed other composites. The photodegradation mechanism involved the generation of O-center dot(2)- radicals and holes, and the breakage of carbon-carbon double bonds and nitrogen-carbon bonds in tetracycline.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Article
Chemistry, Physical
Charu Negi, Pankaj Kandwal, Jyoti Rawat, Mohit Sharma, Himani Sharma, Gautam Dalapati, Charu Dwivedi
Summary: This work involves tuning the band gap of titanium dioxide (TiO2) nanoparticles through carbon doping during sol-gel synthesis. By using polydiallyldimethylammonium chloride (PDADMAC) as the carbon source, the band gap energy of TiO2 was reduced significantly. The interaction between carbon, titanium, and oxygen atoms was found to contribute to the reduction in band gap energy, resulting in structural modifications and enhanced photocatalytic activity of the TiO2 nanoparticles, as demonstrated in the detailed investigation of the photodegradation kinetics and thermodynamics of methylene blue.
APPLIED SURFACE SCIENCE
(2021)
Article
Nanoscience & Nanotechnology
Soad Z. Alsheheri, Ahmed Shawky, Wejdan T. Alsaggaf, Z. Zaki
Summary: The accumulation of Cr(VI) ions can have serious impacts on the environment and human health. This study presents a simple synthesis of ZnSe nanoparticles anchored to TiO2 for visible-light-driven photocatalytic reduction of Cr(VI) ions. The introduction of ZnSe enhances the light absorption and significantly improves the photocatalytic activity, while the nanocomposite exhibits good stability.
Article
Chemistry, Physical
Tingwei Wang, Qian Zhu, Chen Huo, Zhengliang Yin, Qingye Shi, Junkai Tao, Fukun Su, Shunsheng Cao
Summary: Combining morphology modification with heterojunction is an effective approach to enhance the photocatalytic activity of TiO2-based photocatalysts for wastewater treatment. In this study, a novel flower-like TiO2/Bi2O3 (FTB) photocatalyst was developed by depositing Bi2O3 nanoparticles on the surface of flower-like TiO2 (FT). The successful formation of p-n heterojunction between flower-like TiO2 and Bi2O3 was confirmed, which facilitates efficient charge separation. Due to the narrow bandgap of Bi2O3 and the unique flower-like microstructure, FTB exhibits a photocurrent 1.67 times higher than that of FT, resulting in a higher photo-degradation rate (92.7%) of levofloxacin compared to FT photocatalyst (approximately 80%). Moreover, FTB demonstrates excellent anti-interference capability towards environmental factors and good cyclability. This work provides new insights into the development of TiO2-based photocatalysts with advanced performance for antibiotic removal.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Environmental Sciences
Yandi Rao, Yuxin Zhang, Aoqi Li, Tianhu Zhang, Tifeng Jiao
Summary: The composite photocatalyst G-TiO2@Fe3O4/PS, prepared with TiO2, graphite (G) and Fe3O4, showed excellent photocatalytic activity in degrading ARS under visible light, with superior efficiency and stability.
Article
Materials Science, Ceramics
Tariq R. Sobahi, M. S. Amin
Summary: By synthesizing BaTiO3@MWCNT nanocomposites, the efficiency of photocatalytic oxidation of Atrazine (AT) under visible light was improved, showing excellent performance and stability of the nanocomposite.
CERAMICS INTERNATIONAL
(2021)
Article
Engineering, Environmental
Shaeel Ahmed Althabaiti, Zaheer Khan, Salem Mohamed Bawaked, Soad Zahir Al-Sheheri, Mohamed Mokhtar, Maqsood Ahmad Malik, Katabathini Narasimharao
Summary: TiO2 nanotubes, Fe3O4-ZnO, and nanocomposites of Fe3O4-ZnO and TiO2 were synthesized by varying the amount of Fe3O4-ZnO. PtOx nanoparticles were then decorated onto the surface of the nanocomposites using a green synthesis method. The synthesized samples were characterized through various spectroscopy and microscopy techniques, revealing strong interaction between Fe3O4-ZnO and TiO2 nanotubes. Deposition of PtOx resulted in a decrease in the bandgap, and Fe3O4-ZnO/TiO2 nanocomposites exhibited higher surface area and pore volume compared to Fe3O4-ZnO sample. The presence of PtOx species inhibited the recombination of e-/h+ pairs, leading to improved photocatalytic H2 production.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
