Article
Chemistry, Multidisciplinary
Li Li, Xinhong Chen, Xuejun Quan, Facheng Qiu, Xingran Zhang
Summary: CuOx/TiO2 co-photocatalysts with various Cu loading contents were synthesized. The CuOx/TiO2 composites exhibited a unique structure with uniformly distributed CuOx clusters on the TiO2 cube. The photocatalytic activity was greatly enhanced by the reversible process of Cu species and the synergistic effect between CuOx and TiO2.
Review
Chemistry, Physical
Yuhao Liu, Xinlong Zheng, Yingjie Yang, Jing Li, Weifeng Liu, Yijun Shen, Xinlong Tian
Summary: This review article summarizes the development and application of TMS/TiO2 heterojunction photocatalysts, including their characteristics, properties, and advantages, and discusses the factors influencing photocatalytic hydrogen evolution process.
Review
Biochemistry & Molecular Biology
Zia Ur Rehman, Muhammad Bilal, Jianhua Hou, Faheem K. Butt, Junaid Ahmad, Saif Ali, Asif Hussain
Summary: Photocatalytic CO2 reduction is a promising technique to capture and reduce CO2 to non-fossil fuel and valuable compounds. Titanium dioxide is widely used as a catalyst for CO2 reduction and the artificial Z-scheme photocatalyst can enhance efficiency.
Article
Chemistry, Physical
Yuanxu Liu, Fei Fang, Xiao Sun, Weixin Huang
Summary: Composite photocatalysts undergo in situ restructure during photocatalytic reactions, and the NiO-TiO2 interfacial interaction strongly influences this process. Different structures of the photocatalysts are acquired with increasing Ni loading, and they have varying effects on the photocatalytic activity.
APPLIED SURFACE SCIENCE
(2022)
Review
Chemistry, Physical
Beatriz Trindade Barrocas, Nela Ambrozova, Kamila Koci
Summary: The photocatalytic reduction of carbon dioxide to renewable fuel or valuable chemicals using solar energy has great potential but suffers from low efficiency due to fast electron-hole recombination and limited light utilization. Heterojunction photocatalysts are considered a possible solution to these challenges. This review provides an overview of the fundamental principles of CO2 photocatalytic reduction and various heterojunction photocatalysts, with a focus on the use of TiO2 and other semiconductors.
Article
Chemistry, Physical
Kunlei Wang, Zuzanna Bielan, Maya Endo-Kimura, Marcin Janczarek, Dong Zhang, Damian Kowalski, Anna Zielinska-Jurek, Agata Markowska-Szczupak, Bunsho Ohtani, Ewa Kowalska
Summary: Titania is a commonly used photocatalyst with important environmental applications, but it has shortcomings such as charge carrier recombination and inactivity under visible light. Doping, surface modification, and coupling with other ions/compounds have been used to enhance the activity of titania-based photocatalysts, but stability remains a challenge.
JOURNAL OF MATERIALS CHEMISTRY A
(2021)
Review
Chemistry, Physical
Nur Rabiatul Adawiyah Mohd Shah, Rozan Mohamad Yunus, Nurul Nabila Rosman, Wai Yin Wong, Khuzaimah Arifin, Lorna Jeffery Minggu
Summary: Graphene is a promising material for photocatalytic H2 production due to its high electron conductivity and surface area. Combining graphene with other materials can enhance the photocatalytic activity and improve hydrogen generation efficiency. Future challenges in H-2 generation still need to be addressed.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Chemistry, Physical
Agnieszka Wanag, Ewelina Kusiak-Nejman, Adam Czyzewski, Dariusz Moszynski, Antoni W. Morawski
Summary: In this study, a series of TiO2/rGO photocatalysts were prepared via a solvothermal method and calcination in an argon atmosphere. The presence of rGO was found to affect the crystallite size and specific surface area, enhancing the photocatalytic activity of the catalysts.
Article
Environmental Sciences
Rodrigo Espinosa, Ma Elena Manriquez, Martin Trejo-Valdez, Francisco Tzompantzi, Adrian Farid Bustos, Emma Ortiz-Islas
Summary: The photocatalytic reduction of carbon dioxide (CO2) to produce methanol (CH3OH) is a promising strategy for clean energy production. The combination of V2O5 and Ga2O3 as photocatalysts enhances the photocatalytic activity by decreasing the band energy and generating synergies. Surface area and morphology do not significantly affect the photocatalytic activity, while species such as Ga2p(3/2) and Ga2p(1/2) identified by XPS enhance the activity by forming vacancies and reducing the bandgap in the combined oxides. These factors contribute to the interaction of electron-hole pairs with CO2 for methanol generation.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Review
Chemistry, Physical
Jiabi Li, Xi Wu, Shengwei Liu
Summary: Extensive studies have focused on synthesizing spherical microassemblies with specific surface functionalizations and hollow interiors for various applications. Focusing on the fabrication of fluorinated TiO2 porous hollow microspheres (F-TiO2 PHMs), this review highlights the simplified two-step templating method and template-free method based on the fluoride-mediated self-transformation (FMST) mechanism. The unique superstructures of F-TiO2 PHMs provide advantages for photocatalytic applications by improving light harvesting, mass transfer, and membrane antifouling, while in situ-introduced surface fluorine species enhance adsorption, activation of reactants, and surface trapping of photo-excited electrons and holes.
ACTA PHYSICO-CHIMICA SINICA
(2021)
Article
Engineering, Environmental
Man Jiang, Minghui Zhang, Longzhen Wang, Yawen Fei, Shuo Wang, Avelino Nunez-Delgado, Awais Bokhari, Marco Race, Alireza Khataee, Jiri Jaromir Klemes, Lingbao Xing, Ning Han
Summary: This study successfully prepared a TiO2/graphene (TiO2/G) composite photocatalytic material via the hydrothermal method. The TiO2/G nanocomposites showed a large specific surface area, small pore size, and low electron-hole pair complexation rate, resulting in efficient degradation of pollutants. By anchoring TiO2 on graphene oxide (GO), the photoresponse range of TiO2/G was broadened and its photocatalytic efficiency was significantly improved. This work is important for the development of photocatalytic systems for the treatment of mineral processing wastewater.
CHEMICAL ENGINEERING JOURNAL
(2022)
Review
Chemistry, Multidisciplinary
Mahmoud A. Ahmed, Ashraf A. Mohamed
Summary: This review discusses the current progress in the design and synthesis of graphene/semiconductor photocatalysts, as well as their application in photocatalytic degradation of organic pollutants and hydrogen production. The influencing parameters and recyclability of the catalyst are thoroughly analyzed.
Article
Engineering, Multidisciplinary
Haiyang Liu, Feng Sun, Xinyue Li, Qianli Ma, Guixia Liu, Hui Yu, Wensheng Yu, Xiangting Dong, Zhongmin Su
Summary: A double S-scheme heterostructure graphene aerogel photocatalyst (CTZA) is successfully prepared using the isoelectric point assisted calcination technique. CTZA exhibits excellent photocatalytic performance in removing heavy metal ions and degrading pollutants due to the advantages of the double S-scheme heterostructure and graphene aerogel framework.
COMPOSITES PART B-ENGINEERING
(2023)
Review
Environmental Sciences
Nisha T. Padmanabhan, Nishanth Thomas, Jesna Louis, Dhanu Treasa Mathew, Priyanka Ganguly, Honey John, Suresh C. Pillai
Summary: Nanostructured photocatalysts, such as titanium dioxide (TiO2) composites with graphene, hold promise for addressing environmental challenges by providing a clean and sustainable ecosystem to humanity. The coupling of TiO2 with graphene has shown to be more active in photocatalysis, with graphene sheets facilitating the transfer and separation of photo-generated electrons during TiO2 excitation, ultimately reducing electron-hole recombination. Various design strategies and synthetic routes have been highlighted to enhance the interfacial charge transfer dynamics in TiO2/graphene nanocomposites for environmental remediation applications.
Article
Environmental Sciences
Davinder Kaur, Karanveer Singh, William T. T. Reynolds Jr, Bonamali Pal
Summary: Graphene oxide (GO) is a promising material in photocatalysis, adsorption, and energy storage due to its high surface area and unique layered structure. Anthracite coal is an attractive precursor for GO because it provides high concentration of sp(2) carbon, resulting in high conductivity and absorbance in the visible region. GO-TiO2 nanocomposites were prepared to enhance photocatalytic activity by facilitating electron transmission from TiO2 to GO, and Ag nanoparticles were coated on TiO2 to further boost activity.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Chemistry, Physical
Vorrada Loryuenyong, Pajaree Thongpon, Sasathorn Saudmalai, Achanai Buasri
INTERNATIONAL JOURNAL OF PHOTOENERGY
(2019)
Article
Chemistry, Multidisciplinary
Vorrada Loryuenyong, Patnarin Kaewmeesri, Ruethaichanok Siritanon, Suparat Nilwadee, Achanai Buasri
JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY
(2019)
Article
Chemistry, Physical
Vorrada Loryuenyong, Achanai Buasri
Summary: This study investigated the preparation of luminescent glass aggregates using soda-lime waste glass and strontium aluminate-based phosphors. The addition of fine phosphor powder inhibited glass crystallization and reduced the porosity of the aggregates. Despite luminescent degradation under thermal attacks, the phosphors still had good luminescent properties and stability at high sintering temperatures.
INTERNATIONAL JOURNAL OF PHOTOENERGY
(2021)
Article
Materials Science, Ceramics
Vorrada Loryuenyong, Pitsinee Juikatu, Pichanut Sirisukha, Ukrit Kumleing, Achanai Buasri
Summary: This research investigated the thermochromic and luminescent properties of Ca14Zn6Al10-xMn4O35 (x = 0, 0.5, 1.0, 1.5, 2) garnet materials prepared by a high-temperature solid-state reaction method. The samples exhibited tunable color changes with a change in temperature, with the best thermochromic performance observed for Ca14Zn6Al10-xMnxO35 samples with x = 1 and a sintering temperature of 1200 degrees C. The reversible change in color from yellow to reddish yellow was attributed to the changes in absorption bands of Mn4+ and Mn5+ in different crystal sites. The presence of impurity phases was found to affect the optical properties of the samples.
JOURNAL OF ASIAN CERAMIC SOCIETIES
(2022)
Article
Engineering, Chemical
Achanai Buasri, Phensuda Sirikoom, Sirinan Pattane, Orapharn Buachum, Vorrada Loryuenyong
Summary: In this study, response surface methodology (RSM) and machine learning (ML) were used to optimize the biodiesel production process via acid-catalyzed transesterification and esterification of triglyceride. The effects of catalyst content, methanol/UCO mole ratio, and irradiation time were evaluated using Box-Behnken design (BBD) and an artificial neural network (ANN). The highest biodiesel yield was obtained with optimal process parameters of catalyst content (4.94 wt.%), methanol/UCO mole ratio (16.76:1), and irradiation time (8.13 min), with a yield of approximately 98.62%.
Proceedings Paper
Materials Science, Multidisciplinary
Watchrapon Panloetparnich, Vorrada Loryuenyong, Achanai Buasri
Summary: Researchers have successfully prepared polyaniline-nickel oxide (PANINiO) composites using a facile method and studied their morphology and electrochemical properties. The results indicate that the specific capacitance of the composites increases with higher NiO content.
MATERIALS TODAY-PROCEEDINGS
(2022)
Proceedings Paper
Materials Science, Multidisciplinary
Vorrada Loryuenyong, Anucha Khadthiphong, Jirapan Phinkratok, Jeerawat Watwittayakul, Woradetch Supawattanakul, Achanai Buasri
MATERIALS TODAY-PROCEEDINGS
(2019)
Article
Materials Science, Multidisciplinary
A. Buasri, S. Ojchariyakul, P. Kaewmanechai, W. Eakviriyapichat, V Loryuenyong
OPTOELECTRONICS AND ADVANCED MATERIALS-RAPID COMMUNICATIONS
(2018)
