Article
Chemistry, Physical
Xiaozhen Zhang, Han Yu, Yanhua Song, Jingyao Li, Fangke Wang, Ruyan Xie, Shuzhe Zhang, Haifeng Zou
Summary: A novel hydrogenated rambutan-like hollow TiO2 photocatalyst (HRT) was synthesized, which exhibited excellent photocatalytic degradation property for organic contaminants. The protruding spikes on the surface of the 3D rambutan-like hollow structure provided a fast channel for charge transfer, while the suitable cavity enhanced light scattering and collection. The available inner/outer surface could bind contaminants more rapidly, facilitating the transportation of photo-generated electrons.
APPLIED SURFACE SCIENCE
(2023)
Article
Materials Science, Ceramics
Shipra Choudhary, Manisha Sharma, Venkata Krishnan, Satyabrata Mohapatra
Summary: This study successfully prepared magnetically separable CoFe2O4-ZnO hybrid nanostructures and characterized their structure and morphology using various techniques. CoFe2O4-ZnO exhibited significantly enhanced photocatalytic performance compared to pristine CoFe2O4 due to its high light utilization ability and heterojunction formation that delayed charge carrier recombination. The study provides an efficient solution for sunlight-responsive magnetically separable CoFe2O4-ZnO photocatalyst in wastewater purification.
CERAMICS INTERNATIONAL
(2022)
Article
Materials Science, Ceramics
Levent Karacasulu, Ugur Kartal, Oyku Icin, Mauro Bortolotti, Mattia Biesuz, Cekdar Vakifahmetoglu
Summary: Monolithic SrTiO3-TiO2 ceramic heterostructures were successfully prepared using the reactive hydrothermal liquid phase densification method. The obtained ceramics were analyzed for structural, morphological, and photocatalytic properties. It was found that the final structure consisted of TiO2 and SrTiO3 phases, and the ceramics showed high dielectric constant and low dielectric loss. The SrTiO3-TiO2 heterostructured monoliths exhibited efficient photocatalytic degradation of Methylene Blue.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2023)
Article
Chemistry, Physical
Marcos Gonzalez-Tejero, Joyce G. Villachica-Llamosas, Alba Ruiz-Aguirre, Gerardo Colon
Summary: Cu/TiO2/SrTiO3 hybrid structures were synthesized by impregnation method from Cu/TiO2 and SrTiO3 systems. The composites effectively covered SrTiO3 with Cu/TiO2, leading to an outstanding improvement of photoactivity for hydrogen production from methanol photoreforming. The optimal 30wt% SrTiO3 heterojunction achieved a photoproduction of 81.7 mmol/g H2 after 6 hours, 1.7 times higher than bare Cu/TiO2.
ACS APPLIED ENERGY MATERIALS
(2023)
Article
Chemistry, Physical
Yilei He, Lijuan Zhang, Yanze Wei, Xing Zhang, Zumin Wang, Ranbo Yu
Summary: The nano-heterostructured combination of SrTiO3 and TiO2, with optimized interface achieved through bandgap engineering, demonstrates high efficiency in separating charge carriers, leading to exceptional photocatalytic performance for H-2 production.
Article
Chemistry, Inorganic & Nuclear
Shuai Ren, Jiejing Zhang, Huiqing Lu, Shiyong Gao, Lin Li, Ping Rong, Xiaolei Zhang, Yi Liu, Dandan Sang
Summary: CuO/TiO2 heterostructures with carambola-like CuO integrated with TiO2 nanotubes have been synthesized, showing strong UV light and visible light absorption. Studies indicate that these heterostructures exhibit enhanced photocatalytic activity compared to TiO2 nanotubes.
EUROPEAN JOURNAL OF INORGANIC CHEMISTRY
(2021)
Article
Chemistry, Physical
Shipra Choudhary, Dilruba Hasina, Mahesh Saini, Mukesh Ranjan, Satyabrata Mohapatra
Summary: ZnFe2O4-ZnO heterojunction photocatalysts were successfully fabricated using a simple co-precipitation method, showing superior photodegradation performance and stability for large-scale photocatalytic applications. The efficient sunlight utilization ability and suppression of recombination of charge carriers contribute to the improved photocatalytic performance of the ZnFe2O4-ZnO nanostructures. (C) 2021 Elsevier B.V. All rights reserved.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Physical
Evangelia Vasilaki, Nikos Katsarakis, Spyros Dokianakis, Maria Vamvakaki
Summary: Core-shell heterostructures with a flower-like morphology, consisting of a ZnO core and a TiO2 shell decorated with reduced graphene oxide (rGO) sheets, were reported to enhance absorption properties towards visible light range in semiconductors. The photocatalytic performance of the rGO-modified ZnO-TiO2 catalyst under visible light irradiation outperformed that of the parent ZnO-TiO2 core-shell structures, attributed to higher absorption and improved electron-hole separation in the ternary system.
Article
Chemistry, Multidisciplinary
Mireia Cifre-Herrando, Gemma Rosello-Marquez, Pedro Jose Navarro-Gazquez, Maria Jose Munoz-Portero, Encarnacion Blasco-Tamarit, Jose Garcia-Anton
Summary: This study focuses on the synthesis and characterization of different types of nanostructures for their potential use as photoanodes in the photoelectrocatalytic degradation of emerging contaminants. The results demonstrate that the optimized nanostructure (TiO2-ZnO) exhibits excellent performance in the photoelectrocatalytic degradation process.
Article
Materials Science, Multidisciplinary
Xueqi Wang, Mengting Deng, Ziyi Zhao, Qi Zhang, Yongqian Wang
Summary: The introduction of super-hydrophobicity into the field of photocatalysis utilizing CuO nanowires and ZnO nanostructures has shown promising results in enhancing photocatalytic properties and super-hydrophobicity. Through optimization of experimental conditions, the composite nanostructures exhibit desired properties for photocatalysis and surface modification. The stable super-hydrophobic property after photocatalytic degradation has potential for improving self-cleaning and expanding the application field of photocatalysts.
MATERIALS CHEMISTRY AND PHYSICS
(2022)
Article
Chemistry, Physical
P. P. Ortega, C. C. Silva, M. A. Ramirez, G. Biasotto, C. R. Foschini, A. Z. Simoes
Summary: ZnO nanostructures synthesized via the microwave-assisted hydrothermal method show superior photocatalytic and gas sensing performances, highlighting their potential for environmental applications such as water purification and air monitoring.
APPLIED SURFACE SCIENCE
(2021)
Article
Chemistry, Physical
Hamouda M. Mousa, Jarah Fares Alenezi, Ibrahim M. A. Mohamed, Ahmed S. Yasin, Abdel-Fatah M. Hashem, Abdalla Abdal-hay
Summary: This study successfully synthesized a semiconductor-semiconductor (S-S) heterojunction film with low bandgap energy, achieving efficient wastewater treatment through photocatalysis. The new material exhibited excellent antibacterial properties and photodegradation effects, showing great potential for application in wastewater treatment.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Physical
Khalid Mujasam Batoo, Muhammad Farzik Ijaz, Ahamad Imran, Saravanan Pandiaraj
Summary: Bismuth ferrite-based oxide nanostructures were chemically synthesized and employed as photoelectrodes for water splitting reactions and remediation of organic pollutants. The incorporation of gold (Au) nanoparticles induced plasmonic effects, impacting the physicochemical properties and application performance of the materials. XRD, absorbance, and TEM analyses confirmed the interaction between Au and BFO nanoparticles. Plasmonic effects were observed in the absorbance spectra, indicating significant changes in the optical properties upon Au decoration. Photoluminescence spectra revealed the influence of BFO and Au nanoparticles on defect states and charge transfer. Comparative analysis demonstrated enhanced photo-catalytic and photoelectrochemical performance of Au-decorated BFO nanostructures. Time-dependent photocurrent density studies proved the stability and improved charge transfer efficiency of Au-decorated photoelectrodes. The nanocomposite exhibited efficient degradation of organic pollutants and enhanced hydrogen production from water splitting under sunlight illumination.
SURFACES AND INTERFACES
(2023)
Article
Nanoscience & Nanotechnology
Carminna Ottone, Diego Pugliese, Marco Laurenti, Simelys Hernandez, Valentina Cauda, Paula Grez, Lorena Wilson
Summary: ZnO-based anodes were studied for the photoelectrochemical regeneration of NAD(+), with different morphologies of ZnO showing varying influences on the detection of NADH. The photocatalytic activity of ZnO decreased with increasing concentrations of NAD(+), due to absorption of ultraviolet irradiation by the coenzyme. The flower-like film showed a higher electrochemical surface area and led to a significant increase in NAD(+) regeneration compared to both electrochemical oxidation and the only photochemical reaction. Tests with formate dehydrogenase demonstrated that 94% of the regenerated NAD(+) remained enzymatically active.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Chemistry, Physical
Chengge Hu, Chunqing Tai, Wenchao Zhang, Qifang Lu, Mingzhi Wei, Conghui Si, Enyan Guo, Yingping Pang
Summary: In this work, a novel Au/SrTiO3/TiO2 (T3) photocatalyst was constructed by precisely growing cubic SrTiO3 on anatase TiO2 hollow nanospheres. The optimized Au/SrTiO3/TiO2 (T3) photocatalyst achieved a remarkable photocatalytic H2 evolution rate under solar irradiation due to the synergistic effects of plasma electric field and internal electric field in the 3D Au-SrTiO3/TiO2 hollow nanospheres.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)