Article
Chemistry, Physical
D. Komaraiah, E. Radha, J. Sivakumar, M. V. Ramana Reddy, R. Sayanna
Summary: Thin films of Fe3+ doped TiO2:0.01Eu(3+) nanoparticles were prepared on glass substrates using sol-gel spin coating technique. Various characterization techniques were used to study the properties of these films, revealing promising performance in photocatalysis and photoluminescence.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Nanoscience & Nanotechnology
Yi Yang, Tianyu Sun, Fuliang Ma, Liang-Feng Huang, Zhixiang Zeng
Summary: A Fe3+ doped TiO2 film with long-lasting superhydrophilicity and antifogging is prepared in this study, and experiments along with density-functional theory calculations are conducted to investigate the antifogging performance and the underlying microscopic mechanism of Fe3+ doped TiO2. The results show that Fe3+ doping can enhance the photolysis ability of TiO2 under sunlight exposure and stabilize the hydroxyl adsorbate on TiO2 surface, leading to a long-lasting superhydrophilicity.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Nanoscience & Nanotechnology
Abdullah M. Alotaibi, Premrudee Promdet, Gi Byoung Hwang, Jianwei Li, Sean P. Nair, Sanjayan Sathasivam, Andreas Kafizas, Claire J. Carmalt, Ivan P. Parkin
Summary: Zn and N codoped TiO2 thin films were grown using chemical vapor deposition, with different concentrations of Zn impacting superoxide formation, photocatalytic activity, and bactericidal properties. The 0.4% Zn,N:TiO2 thin film demonstrated the highest formal quantum efficiency in degrading stearic acid, while the 1.0% Zn,N:TiO2 film showed the highest bactericidal activity under both UVA and fluorescent light conditions. The enhanced efficiency of the films was correlated with increased charge carrier lifetime, supported by transient absorption spectroscopy measurements.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Chemistry, Physical
Baocheng Wu, Yarong Sun, Jingfeng Dong, Zijin Tian, Yu Xie, Junwei Hou
Summary: By adjusting the preparation operation sequence of solvothermal doping and annealing treatment, the N/F codoped TiO2 nanotube arrays exhibited outstanding solar absorption and photoelectrochemical performances in the optimized Sample. This work provides a referable template for improved photocatalytic application fields of TiO2 in environment and energy.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Engineering, Environmental
Prapatsorn Kaewkam, Apichaya Kanchanapaetnukul, Janista Khamyan, Nattapon Phadmanee, Kun-Yi Andrew Lin, Krisana Kobwittaya, Sanya Sirivithayapakorn
Summary: The study investigated the effects of TiO2 phases and UV light on photodegradation of LDPE films, finding that using TiO2-900°C with UV-C light resulted in the highest degradation efficiency. Analysis of crystal structure and elemental composition provided insights into the degradation mechanism of LDPE films.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2022)
Article
Chemistry, Multidisciplinary
Yin Luo, Jianmin Wu, Zhong Qin, Hengcong Zhang
Summary: A modified nano-TiO2 based on Fe3+ and Ce3+ was developed to address environmental pollution caused by automobile exhaust in a tunnel. The doping of ions improved the photocatalytic activity of nano-TiO2. Experimental results demonstrated that the modified nano-TiO2 exhibited higher catalytic efficiency in exhaust gas degradation, showcasing potential for environmental applications.
GREEN PROCESSING AND SYNTHESIS
(2021)
Article
Energy & Fuels
Yunfei Yan, Jianbo Li, Tao Jia, Haojie Li, Kaiming Shen, Ziqiang He
Summary: Fe- and graphenecomodified TiO2 was synthesized and showed high photocatalytic performance for hydrogen production. The addition of Fe3+ and graphene effectively modified TiO2, expanding its visible-light absorption range and reducing the band gap. These findings are crucial for the design of high-performance TiO2-based photocatalysts for photocatalytic hydrogen production.
Article
Chemistry, Physical
Shoichiro Nagashima, Kazushige Ueda, Takahisa Omata
Summary: Ce3+-Tb3+ codoped LaLuO3 was prepared by selectively doping Tb3+ at a La or Lu site and doping Ce3+ simultaneously at a La site. X-ray diffraction analysis confirmed the occupation of Ce3+ at a La site and Tb3+ at a La or Lu site, which resulted in the expansion and contraction of the unit-cell volume. Photoluminescence analysis showed that energy transfer occurred from Ce3+ to Tb3+ at both La and Lu sites, leading to the extension of the excitation wavelength range for Tb3+ luminescence in Ce3+-Tb3+ codoped LaLuO3.
JOURNAL OF PHYSICAL CHEMISTRY C
(2022)
Article
Chemistry, Inorganic & Nuclear
Dalanda Hamdi, Lobna Mansouri, Varsha Srivastava, Mika Sillanpaa, Latifa Bousselmi
Summary: The addition of Eu to TiO2 photocatalysts showed the best enhancement in photoactivity performance for the removal of AB dye compared to Ce-TiO2 and pure TiO2 films. The optimal concentration for better electron/hole separation was found to be 1 wt% Ce or 0.1 wt% Eu doping in TiO2. EIS measurements demonstrated that Ce-TiO2(1 wt%) and Eu-TiO2(0.1 wt%) photocatalysts had lower electron transfer resistance than pure TiO2, leading to more effective separation of electron/hole pairs during photodegradation reactions.
INORGANIC CHEMISTRY COMMUNICATIONS
(2021)
Article
Materials Science, Multidisciplinary
Beyza Yildirim, Ozgur Yasin Keskin, Ramazan Dalmis, Isil Birlik, Funda Ak Azem, Kadriye Ertekin
Summary: Ce3+ activated garnets, LuAG and YAG, have been studied to increase brightness and red-shift emission maximum for potential white light emitting diode (WLED) applications. In this study, LuAG: Ce3+ and YAG: Ce3+ were blended with TiO2 particles and tested for photoluminescence characteristics. The results showed significant enhancement in emission intensity and red shifts for TiO2 blends of the phosphors, as well as improved quantum efficiency.
Article
Engineering, Electrical & Electronic
M. Mohammed, I. S. Yahia, S. Abd El-Mongy
Summary: In this research, a casting method was used to prepare a codoped composite film by adding Fe3+ ions to an Al3+/PVA solution. The as-prepared sample showed interlinked Fe3+ ions with the PVA matrix, and exhibited promising optical, electrical, and magnetic properties, making it a good candidate for electronic, optoelectronic, and laser device applications.
OPTICAL AND QUANTUM ELECTRONICS
(2022)
Article
Materials Science, Ceramics
Hsuan-Fu Yu, Chao-Wei Cheng
Summary: Photocatalytic thick films of P/Si-TiO2 were prepared on FTO glass substrates with TiO2 thin films as a base layer. The thick film showed a significantly higher photocatalytic degradation rate constant for methylene blue under UV-light compared to the thin film.
JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY
(2021)
Article
Materials Science, Multidisciplinary
Fangyu He, Qi Wang, Zhiguo Song, Yongjin Li, Zhengwen Yang, Jianbei Qiu
Summary: This study reports the fabrication of Ce3+/Er3+-codoped YAG downshifting photonic crystals and investigates the effect of the photonic band gap on Ce3+-Er3+ energy transfer. The energy transfer was enhanced due to the suppressed spontaneous yellow emission of Ce3+. The results obtained are valuable for the foundational study of sensitized downshifting emission modification and the application of downshifting optical devices in near-infrared lasers materials.
Article
Materials Science, Multidisciplinary
Ali Moulahi
Summary: The incorporation of trivalent and pentavalent ions improved the visible light absorption and the photodegradation characteristics of TiO2. The addition of Sb5+ and In-3/Sb(5+) ions enhanced the visible light response. The Ti0 center dot 94In0 center dot 03Sb0 center dot 03O2 catalyst showed high photodegradation activity and photostability.
Article
Materials Science, Multidisciplinary
V. Ganesh
Summary: Cu-Al codoped ZnO nanocomposites were synthesized via a simple wet chemical method, and their crystal structure, surface morphology, optical properties, and photosensing behavior were investigated. The results showed that Cu and Al dopants affected the ZnO lattice, and the Cu-Al codoped ZnO sample exhibited excellent photocatalytic degradation performance.
