Article
Materials Science, Ceramics
E. Burak Ertus, Cekdar Vakifahmetoglu, Abdullah Oztuerk
Summary: The research found that porous glass embedded with titanium dioxide has a higher efficiency in methylene blue removal, mainly due to its high specific surface area and dispersion of nano-sized anatase TiO2 crystallites.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2021)
Article
Materials Science, Multidisciplinary
Ying-jie Song, Hai-chao Li, Zi-wei Xiong, Long Cheng, Miao Du, Zun-qi Liu, Jun Li, De-qiang Li
Summary: This study used waste sawdust to prepare TiO2/C composites, which were used to effectively degrade methylene blue (MB) under simulated sunlight. The carbon component in the composite significantly enhanced sensitization, resulting in a wider visible light absorption and decreased charge recombination rate. The MB degradation efficiency reached nearly 100% within 30 minutes in the presence of TiO2/C composites, and the material showed sustained performance after multiple cycles. This green and low-cost preparation method offers a sustainable and efficient alternative to reduce the consumption of fossil resources.
DIAMOND AND RELATED MATERIALS
(2023)
Article
Green & Sustainable Science & Technology
Tianyu Yang, Yu Liu, Guangda Xia, Xiaodong Zhu, Yu Zhao
Summary: The utilization of the multilevel pore structure of natural wood for synthesizing titanium dioxide resulted in a material with improved adsorption and photocatalytic properties. Characterization using SEM, TEM, and X-ray diffraction revealed the presence of anatase and rutile phases in the prepared titanium dioxide.
JOURNAL OF CLEANER PRODUCTION
(2021)
Article
Environmental Sciences
Wei Gao, Yufeng Li, Jitao Zhao, Zhe Zhang, Weiwei Tang, Jun Wang, Zhenyu Wu
Summary: Reduced graphene oxide (rGO)/TiO2 nanocomposites, synthesized through a hydrothermal technique, were used as photocatalysts to effectively degrade methylene blue (MB) in industrial dyestuff wastewater. The degradation efficiency of the nanocomposites for MB was as high as 98.18% at 5wt.% rGO content, 0.4 g L-1 rGO/TiO2 content, pH 6, and 60 mg L-1 MB concentration. The photocatalytic degradation mechanism involved immediate oxidative degradation and the combined action of O-2(center dot-), OH(center dot), and h(+) species. The degradation kinetic of the nanocomposites for MB followed a first-order model under UV irradiation.
WATER AIR AND SOIL POLLUTION
(2023)
Article
Polymer Science
Ximena Jaramillo-Fierro, Sneyder Gaona, John Ramon, Eduardo Valarezo
Summary: In this study, GP and GTA geopolymeric materials were prepared and characterized. The compounds showed high adsorption capacity and photocatalytic activity for the degradation of MB dye. The incorporation of ZnTiO3/TiO2 in the geopolymeric matrix allowed GTA to achieve higher overall efficiency compared to GP, combining adsorption and photocatalysis. The synthesized compounds could be used for multiple cycles for the removal of MB from wastewater.
Article
Materials Science, Ceramics
Haibei Tan, Yabin Zhang, Bowen Li, Hao Yang, Haitao Hou, Qinglin Huang
Summary: A polymer-glass flat membrane was prepared using the phase inversion casting method and TiO2 was coated on the surface of the membranes. The membrane was characterized and its photocatalytic degradation of methylene blue was investigated. The results showed that the membrane coated by three layers TiO2 sol exhibited the best photocatalytic degradation performance for methylene blue.
CERAMICS INTERNATIONAL
(2023)
Article
Chemistry, Physical
Aleksandra Babyszko, Agnieszka Wanag, Marcin Sadlowski, Ewelina Kusiak-Nejman, Antoni W. W. Morawski
Summary: This paper presents a modification of titanium dioxide with fumed silica and investigates the characteristics and photocatalytic activity of the materials. The results show that the presence of SiO2 effectively inhibits the increase in crystallite size and decrease in specific surface area during calcination. SiO2 also contributes to the increase in specific surface area and the change in band gap energy values. The photocatalytic activity of SiO2/TiO2 photocatalysts is higher compared to the starting TiO2, and it increases with the increase in SiO2 content.
Article
Materials Science, Ceramics
Yabin Zhang, Haibei Tan, Chunfang Wang, Bowen Li, Hao Yang, Haitao Hou, Changfa Xiao
Summary: A TiO2-coated glass hollow fiber membrane was successfully synthesized and its photocatalytic removal of methylene blue from wastewater was investigated. The results showed that the membrane had good photocatalytic and antifouling properties, significantly improving the removal of methylene blue compared to the basement membrane. The membrane could be recycled multiple times with a high removal degree of methylene blue.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2022)
Article
Polymer Science
Mohammad BinSabt, Varsha Sagar, Jagpreet Singh, Mohit Rawat, Mohamed Shaban
Summary: This study investigates the use of titanium dioxide nanoparticles (CS-TiO2 NPs) synthesized with cannabis sativa (bhang) leaf extract to mitigate methylene blue dye. The synthesized CS-TiO2 NPs exhibited remarkable photocatalytic degradation potential, making them a sustainable alternative for water purification.
Article
Chemistry, Multidisciplinary
Martina Kocijan, Lidija Curkovic, Igor Bdikin, Gonzalo Otero-Irurueta, Maria J. Hortigueela, Gil Goncalves, Tina Radosevic, Damjan Vengust, Matejka Podlogar
Summary: This study demonstrated the immobilisation of TiO2 nanoparticles and rGO-TiO2 nanocomposites on glass sheets for photocatalytic degradation of MB dye. The immobilised rGO/TiO2 nanocomposite showed high photocatalytic activity under both ultraviolet and simulated solar irradiation, and it was convenient for separation and reusability.
APPLIED SCIENCES-BASEL
(2022)
Article
Chemistry, Physical
Mariana de Souza Pereira, Rafaela Pereira Mendes, Gecica Cardoso Bellettini, Renata Martins Benetti, Fabio Elyseu, Adriano Michael Bernardin
Summary: TiO2 is the most commonly used semiconductor for mineralization of organic compounds in heterogeneous photocatalysis. The discoloration of an organic dye is the commonly used technique to determine the photocatalytic performance of semiconductors, but there is no consensus on the procedure for dye discoloration. In this study, the ISO 10678:2010 standard was used as a guide to test the performance of TiO2 (P25) for the discoloration of methylene blue under UV light. The parameters studied were exposure time, dye concentration, and UV light intensity. The results showed that UV light intensity was the only factor affecting photocatalysis.
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
(2023)
Article
Green & Sustainable Science & Technology
Indar Kustiningsih, Hendrini Pujiastuti, Denni Kartika Sari, Agus Rochmat, Slamet
Summary: TiO2 nanotubes can be used for removing Methylene Blue by a combined process of electrocoagulation and photocatalysis. The addition of anthocyanin sensitizers can enhance the efficiency of MB removal.
Article
Materials Science, Multidisciplinary
Ashwini S. Gadge, S. Y. Janbandhu, G. K. Sukhadeve, Rahul Kumar, C. D. Gajbhiye, R. S. Gedam
Summary: This study prepared titanium dioxide (TiO2) nanoparticles through a simple sol-gel process and calcined them at various temperatures to investigate their thermal, physical, morphological, optical, and photocatalytic properties. The synthesized materials' thermal properties were analyzed through TGA and DTA studies, while XRD and Raman analyses confirmed their crystallinity, phase transformation, and crystallite size. Textural parameters were calculated using the BET and BJH methods. Changes in structure and morphology with calcination temperatures were explored through FTIR and SEM analyses, while the EDS pattern confirmed the elemental composition. The HR-TEM study revealed the nanoparticles' average size and spherical shape, and XPS spectra demonstrated their elemental state. UV-vis and PL studies confirmed the increase in particle size with calcination temperatures. The photocatalytic efficiency of the samples was tested, and a sample calcined at 400℃ for 2 h showed an improved degradation efficiency of 94.96% for 10 ppm MB dye.
ECS JOURNAL OF SOLID STATE SCIENCE AND TECHNOLOGY
(2023)
Article
Environmental Sciences
G. Morales, L. Astrid Yanez-Hernandez, K. Lozano, V. M. Padilla-Gainza, S. Alejandro Lozano-Morales
Summary: In this research, composites based on poly(methyl methacrylate) with TiO(2) nanoparticles were prepared using the Forcespinning technique. The properties of the composites were characterized and evaluated. It was found that the incorporation of TiO(2) nanoparticles increased the thermal stability of the materials, but decreased the tensile strength and Young's modulus. The photocatalytic degradation of methylene blue was more efficient in the composites with spherical nanoparticles compared to those with one-dimensional nanoparticles.
INTERNATIONAL JOURNAL OF ENVIRONMENTAL SCIENCE AND TECHNOLOGY
(2023)
Article
Chemistry, Multidisciplinary
Fernanda Dalto, Iwona Kuzniarska-Biernacka, Clara Pereira, Elsa Mesquita, Olivia Salome G. P. Soares, M. Fernando R. Pereira, Maria Joao Rosa, Ana S. Mestre, Ana P. Carvalho, Cristina Freire
Summary: TiO2-containing photocatalysts combined with carbon-based materials show promising performance in wastewater treatment. TiO2/AC composites exhibited efficient methylene blue removal, especially TiAC29 and TiAC60, and UV-induced photoregeneration was effective in enhancing adsorption capacity.
Article
Chemistry, Physical
Yunhui Wu, Jiurong Li, Xiujian Zhao, Xiao Gong
Summary: In this study, nickel-doped carbon dots (Ni-CDs) with tunable fluorescence emission were successfully synthesized using a simple one-step solvothermal method. The introduction of Ni enhanced the fluorescence intensity and caused a redshift. By mixing Ni-CDs with polyvinylpyrrolidone (PVP), the self-quenching effect of solid-state fluorescence was effectively avoided. Based on this, high-performance green, yellow, and red light-emitting diodes (LEDs) were constructed, demonstrating the potential of these carbon dots for solid-state lighting applications.
Article
Physics, Applied
Baoshun Liu, Xiujian Zhao
Summary: VO2-based thermochromic smart glazes have attracted attention for energy-saving buildings. Multi-layer film assemblies are used to increase visible luminous transmittance and solar light modulation efficiency. This research proposed an automatic optimization method to improve T-lum and ?T-sol, and analyzed the physical reasons behind high T-lum and ?T-sol. The results are meaningful for the design of multi-layer film assemblies according to user's demands.
JOURNAL OF APPLIED PHYSICS
(2023)
Article
Chemistry, Physical
Zhilin Li, Qiaoqiao Li, Mengyan Cao, Liujiang Zhou, Xiujian Zhao, Xiao Gong
Summary: Metal halide perovskite materials have attracted attention for lighting applications due to their unique optoelectronic properties. However, their complex preparation processes and toxicity of lead restrict their practical use. This study reports Sb3+ and Bi3+ doping of 0D (NH4)2SnCl6 perovskite powders, which exhibit wide emission peaks at different wavelengths with high photoluminescence quantum yield (PLQY). The mechanisms of the doping effects are proposed based on experimental and theoretical analysis. Both Sb3+ and Bi3+ dopings enhance the air and thermal stability of 0D (NH4)2SnCl6 perovskites, showing great potential for solid-state lighting.
JOURNAL OF PHYSICAL CHEMISTRY C
(2023)
Article
Chemistry, Physical
Fang Yan, Jiurong Li, Xiujian Zhao, Xiao Gong
Summary: Multicolor fluorescent carbon dots with unconventional luminescence behavior were prepared using o-, m-, or p-phenylenediamine (o-PD, m-PD, or p-PD) and 2,3-dihydroxynaphthalene as reaction precursors. The fluorescence emission of the synthesized carbon dots followed a rule of o-PD to m-PD to p-PD from blue to red, contrary to most previously reported results. The differences in the polymerization, surface states, functional groups, and graphite N content of the carbon dots were identified as the main reasons for the unconventional luminescence behavior. These multicolor carbon dots have promising applications in LED lighting and anticounterfeiting fields.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2023)
Article
Chemistry, Multidisciplinary
Qiufen Liu, Xuelei Chen, Jiahao Wu, Liming Zhang, Guanjie He, Shouqin Tian, Xiujian Zhao
Summary: In this paper, amorphous ZIF-8 was modified with carboxyl functional groups (H3BTC-ZIF-8) to load organic fluorescent dyes (R6G and C151) and prepare R6G/C151/H3BTC-ZIF-8 composite films. The enhanced fluorescence properties were attributed to the increased interactions between the dyes and H3BTC-ZIF-8, which reduced the ACQ effect and resulted in a white-light-emitting composite film with high photoluminescence quantum yield (PLQY). This strategy provides guidance for the development of white-light-emissive materials.
Article
Chemistry, Multidisciplinary
Zhilin Li, Qiaoqiao Li, Mengyan Cao, Zhihui Rao, Xinyu Shi, Liujiang Zhou, Xiujian Zhao, Xiao Gong
Summary: In this study, Sb3+-doped Cs2ZrCl6 crystals with excellent optical properties and stability were successfully synthesized. The crystals exhibited blue and orange-red emissions under 254 nm and 365 nm light, respectively, attributed to the presence of [ZrCl6]2- and [SbCl6]3- octahedra. The Cs2ZrCl6:xSb(3+) crystals with a PLQY of up to 52.5% showed potential for white light-emitting diode (WLED) fabrication.
Article
Chemistry, Multidisciplinary
Chiho Terada, Sho Usuki, Kazuya Nakata
Summary: TiO2 photocatalytic reaction is an environmentally friendly and promising method to convert biomass-derived compounds into rare sugars. In this study, d-sorbitol was treated with a TiO2 photocatalyst under light irradiation, and various rare sugars were produced. The production of these rare sugars was confirmed through analytical techniques such as high-performance liquid chromatography and proton nuclear magnetic resonance spectroscopy.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2023)
Article
Nanoscience & Nanotechnology
Yongfei Hu, Hao Dong, Arnauld Robert Tapa, Javad Shamsi, Javad Shabani Shayeh, Albert Trokourey, Baoshun Liu, Xiujian Zhao, Yi Xie
Summary: In this study, a facile and scalable NaBr-assisted room-temperature aqueous phase procedure was developed for the synthesis of all-inorganic CsPbBr3-embedded PbBr(OH) with controlled hierarchical structures, excellent ambient stability, and strong activity for photocatalytic degradation of dyes in simulated organic wastewater. The CsPbBr3-embedded PbBr(OH) photocatalysts exhibited excellent photocatalytic activity for dye degradation under visible-light irradiation, surpassing that of commercial TiO2 and other perovskite-based materials. This work provides insights into the green synthesis of ultra-stable perovskite-based nanomaterials for photocatalytic degradation of organic pollutants and other promising water treatment technologies.
ACS APPLIED NANO MATERIALS
(2023)
Article
Engineering, Environmental
Tingfeng Ma, Bin Li, Shouqin Tian, Jiachen Qian, Longxiao Zhou, Qiufen Liu, Baoshun Liu, Xiujian Zhao, Gopinathan Sankar
Summary: W18O49 shows strong Localized Surface Plasmon Resonance (LSPR) effect and unique oxygen-deficient structure, making it widely used in photothermal application and photocatalyst. The photochromic feature of W18O49 has seldom been studied due to the challenge of exploring its features in the saturated colored state. However, the researchers found that the bleached W18O49 obtained by mild-heating the synthesized blue W18O49 nanoparticles in air had considerable reversible photochromic feature, which has great potential in energy-saving smart windows application.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Materials Science, Multidisciplinary
Yuzhou Hu, Ying Ye, Wenchao Zhang, Kai Li, Yao Zhou, Yudong Zhang, Zhao Deng, Jianjun Han, Xiujian Zhao, Chao Liu
Summary: Precise and efficient patterning of light-emitting structures in high resolution and full-color light-emitting diodes is achieved by light-induced inverted patterning of nanocrystals in glasses for micro-light-emitting diodes. This method involves the use of ultrafast laser pulse to induce structural destruction and amorphization of nanocrystals in glasses, resulting in inverted luminescent patterns. The high-throughput patterning of micrometer-scale, thermally stable, and highly photoluminescent structures in nanocrystals embedded glass provides a novel way to fabricate high-performance and ultrahigh-resolution color conversion layers for micrometer-scale light-emitting diodes.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2023)
Article
Chemistry, Multidisciplinary
Qiufen Liu, Mingfeng Zhang, Mengfan Lu, Ziao Wang, Gan Luo, Jianfeng Lu, Dawen Zeng, Xiujian Zhao, Shouqin Tian
Summary: A ZrO2-SiO2 composite film with enhanced mechanical properties was synthesized using a simple sol-gel method. Compared to a pure SiO2 film, the ZrO2-SiO2 film exhibited increased hardness and showed high transmittance gain and improved efficiency in perovskite solar cells with a Zr/Si mole ratio of 0.06.
Article
Chemistry, Physical
Jiurong Li, Jiancang Chen, Xiujian Zhao, Alberto Vomiero, Xiao Gong
Summary: Organosilane-grafted carbon dots (Si-CDs) were synthesized by hydrothermal method and can be uniformly dispersed in polyvinyl alcohol (PVA) matrix. Si-CDs/PVA thin-film LSCs exhibit excellent absorption in the UV spectral region and about 90% transmission in the visible range, with high stability and power conversion efficiency (PCE).
Article
Chemistry, Multidisciplinary
Zhihui Rao, Zhilin Li, Xiujian Zhao, Xiao Gong
Summary: A targeted high-precision luminescence thermometer was designed using a lead-free double perovskite platform by selecting multiple thermally coupled levels (TCLs) of the Er3+ ion. By choosing different TCLs in a single system platform, more precise temperature resolution can be obtained in different temperature regions from 100 K to almost 880 K. This work provides a quantitative guideline for the development of the next generation of temperature sensor based on trivalent erbium ions.
MATERIALS HORIZONS
(2023)
Article
Chemistry, Multidisciplinary
Mengyan Cao, Xiujian Zhao, Xiao Gong
Summary: Luminescent solar concentrators (LSCs) are semi-transparent windows that generate electricity from sunlight absorption. Despite their potential for building-integrated photovoltaics (BIPV), the current power conversion efficiency (PCE) of LSCs is still very low, limiting their practical applications. This Perspective summarizes and reviews the latest developments in LSCs, focusing on the future possibilities of higher PCE, large-scale production, and durability. It promotes the use of uniform testing standards and addresses the need for industrial development, toxicity concerns, and durability issues. A critical assessment of the field is provided, followed by discussions on challenges and solutions.
Article
Chemistry, Inorganic & Nuclear
Shiyu Ma, Jilin Bai, Li Sun, Lihong Zhao, Hao Tan, Lifeng Liu, Zhigang Peng, Xiujian Zhao, Dehua Xiong
Summary: This work successfully synthesized CuCoO2 nanosheets and regulated their crystal size by adding PEG and using a solvothermal route. The Ni@CCO2 electrode exhibited outstanding OER performance in 1.0 M KOH electrolyte, with good structural and compositional stability.
DALTON TRANSACTIONS
(2023)