Review
Chemistry, Physical
Alexei V. Emeline, Aida V. Rudakova, Ruslan V. Mikhaylov, Kirill M. Bulanin, Detlef W. Bahnemann
Summary: This review focuses on the development and exploration of heterostructured photoactive materials, with a major emphasis on the best ways to form and study these materials. The functionality of heterostructures strongly depends on the quality of the heterojunction, which is influenced by the components selected and the synthesis method used. Various approaches such as in-situ and ex-situ, bottom-up and top-down, are discussed, emphasizing the need for strong experimental evidence to confirm true heterojunction formation. Experimental techniques such as HRTEM and electrophysical methods are found to be crucial in confirming successful heterojunction formation and studies.
Review
Chemistry, Multidisciplinary
Yi-Ming Di, Jing-Yan Liu, Meng-Hua Li, Shu-Quan Zhang, Ming-Hua You, Mei-Jin Lin
Summary: D-A heterostructures, composed of organic and inorganic semiconductive components, are emerging photoactive materials with advantages in photoinduced charge separation and transfer. This review provides a definition, general design, and synthetic strategies for D-A heterostructures, and summarizes their recent advances in potential applications such as photochromism, photomodulated luminescence, and photocatalysis.
Article
Chemistry, Physical
Alexandru Enesca, Luminita Isac
Summary: The article discusses the development and photocatalytic activity of two heterostructures (Cu2S/WO3 and Cu2S/SnO2) for indoor air decontamination. The highest photocatalytic efficiency was found in Cu2S/SnO2, with a faster reaction rate compared to other catalysts.
Article
Materials Science, Multidisciplinary
Mohd Fadhil Majnis, Ong Chia Yee, Mohd Azam Mohd Adnan, Mohd Rashid Yusof Hamid, Ku Zilati Ku Shaari, Nurhidayatullaili Muhd Julkapli
Summary: In this study, chitosan and zirconia were integrated into titanium dioxide nanoparticles through a sol-gel fabrication method to generate CS-ZrO2/TiO2 catalyst. The hybrid catalyst showed reduced band gap energy, enhanced photocatalytic activity, and improved photodegradation efficiency of model dye compounds under solar irradiation.
Article
Chemistry, Physical
Almudena Aguinaco, Jose M. Manuel, Eduardo Blanco, Manuel Dominguez, Rocio Litran, Juan J. Delgado, Milagrosa Ramirez-del-Solar
Summary: The optical properties of 5wt% Fe3O4-TiO2 thin films were evaluated in detail in this study. The results showed that the incorporation of 5wt% Fe3O4 improved the optical properties and enhanced the separation efficiency of photoexcited electron-hole pairs in the photocatalyst. The study also proposed a mechanism for solar photocatalytic processes based on experimental results.
Article
Chemistry, Inorganic & Nuclear
Dinesh Mani, S. Sundar Manoharan, Ganesan Sriram, G. Johnsy Arputhavalli, S. Jebasingh
Summary: Kinematically grown highly oriented hexagonal ZnO nanorods and nanograined films were fabricated on silicon substrates via pulsed laser deposition. The structural, morphological, optical properties, and gas sensing studies of ZnO nanostructured thin film were systematically investigated. The study demonstrated that ZnO nanorods exhibit a greater sensitivity response for the detection of acetaldehyde (CH3CHO) compared to ZnO nanograined films, suggesting their potential as a material for CH3CHO gas detection at room temperature.
INORGANIC CHEMISTRY COMMUNICATIONS
(2023)
Article
Metallurgy & Metallurgical Engineering
Siavash Bakhtiarnia, Saeed Sheibani, Alain Billard, Eric Aurry, Mohammad Arab Pour Yazdi
Summary: Nanoporous BiVO4 thin films were successfully deposited using reactive magnetron sputtering, exhibiting good crystal structure, morphology, and photocatalytic properties. The films showed the highest porosity and lowest bandgap under specific conditions, demonstrating excellent photocatalytic activity.
TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA
(2022)
Article
Chemistry, Multidisciplinary
Yiliu Wang, Chuancheng Jia, Zheng Fan, Zhaoyang Lin, Sung-Joon Lee, Timothy L. Atallah, Justin R. Caram, Yu Huang, Xiangfeng Duan
Summary: This study demonstrates a method for growing large-area CsPbBr3 perovskite monocrystalline thin films and forming heterostructure arrays, exhibiting excellent optical quality and optoelectronic properties, laying a solid foundation for the application of all-inorganic lead halide perovskites in optoelectronics.
Article
Chemistry, Physical
Jaspal Singh, Shrawan Roy, Trang Thu Tran, Sophia Akhtar, Eunji Lee, Jeongyong Kim
Summary: The use of ultrathin nanohybrid films in photocatalytic applications is effective for decomposing pollutants. In this study, ultrathin films composed of Au nanoparticles and Fe2O3 oxy-hydroxides were prepared. These films exhibited outstanding photodecomposition ability and superior photocatalytic activity due to their broad absorption and efficient charge transfer.
SURFACES AND INTERFACES
(2023)
Review
Nanoscience & Nanotechnology
Cristina Rodriguez-Seco, Yue-Sheng Wang, Karim Zaghib, Dongling Ma
Summary: Interest in energy storage systems, such as batteries and capacitors, has been on the rise in recent years due to the increasing demand for electricity storage and the intermittent nature of renewable energy sources. Integrated photo-rechargeable batteries, which directly store electricity generated by sunlight, offer a promising solution with significant commercialization potential.
Article
Chemistry, Physical
Sungmin On, Young-Joon Kim, Han-Koo Lee, Hocheon Yoo
Summary: The study systematically investigated the chemical and morphological structure of small-molecule organic semiconductor heterostructures, demonstrating ambipolar and anti-ambipolar transistors with unique applications.
APPLIED SURFACE SCIENCE
(2021)
Article
Chemistry, Physical
C. Mrabet, R. Jaballah, N. Mahdhi, A. Boukhachem, M. Amlouk
Summary: The formation of heterojunctions is commonly used to enhance photocatalytic efficiency. In this study, the photocatalytic activity of CuO-ZnO nanocomposite thin films was investigated and found to be greater than that of individual semiconductors. The produced nanocomposite thin films might be beneficial for environmentally friendly and energy-saving wastewater treatment.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Physical
Sreejith P. Madhusudanan, M. Suresh Kumar, Kallol Mohanta, Sudip K. Batabyal
Summary: Quaternary photo-active metal chalcogenide Cu2FeSnS4 (CFTS) was deposited using the sol-gel method and studied with different stabilizers. It was observed that electrical bistability vanishes after sulfurization while the photo-response of the sulfurized sample improves. This work provides a breakthrough for exploring the memory application of multifunctional materials.
APPLIED SURFACE SCIENCE
(2021)
Review
Chemistry, Multidisciplinary
Oliver S. Wenger
Summary: Transition metal catalyzed cross-coupling reactions play a crucial role in chemical synthesis for forming C-C and C-heteroatom bonds. The combination of nickel catalysis with photoredox chemistry offers new synthetic possibilities, with electronically excited states of nickel complexes playing a key role. However, the potential of photoactive nickel complexes in organic synthesis still requires further exploration and development.
CHEMISTRY-A EUROPEAN JOURNAL
(2021)
Article
Physics, Applied
Jaspal Singh, Rishikesh Singh, Parul Duhan, Yamini Mann, Ashis K. Manna, Debosmita Banerjee, R. K. Soni
Summary: This study demonstrates the cost-effective hydrothermal synthesis of MoS2 thin films with tunable morphology on conductive ITO substrates. The thread-like MoS2 structures show the highest efficiency for sunlight-induced photodegradation activity. The morphology-dependent charge separation behavior in MoS2 thin films contributes significantly to their enhanced photodegradation capabilities.
JOURNAL OF PHYSICS D-APPLIED PHYSICS
(2021)
Correction
Engineering, Chemical
Mitra Mousavi, Aziz Habibi-Yangjeh, Davod Seifzadeh, Kazuya Nakata, S. Vadivel
ADVANCED POWDER TECHNOLOGY
(2022)
Article
Chemistry, Physical
Sovann Khan, Minyeong Je, Nhan Nu Thanh Ton, Wenwei Lei, Toshiaki Taniike, Sayaka Yanagida, Daisuke Ogawa, Norihiro Suzuki, Chiaki Terashima, Akira Fujishima, Heechae Choi, Ken-ichi Katsumata
Summary: A highly active ZnS-ZnO nanosheets were synthesized using a combined solvothermal method and post-annealing, with intentional or unintentional doping of elements such as carbon and rhodium to enhance visible-light photocatalysis. The multijunctioned photocatalyst showed outstanding performance for hydrogen generation from pure water under solar simulating light due to effective charge separation by Z-scheme heterojunction of ZnS and ZnO and Schottky junction of Rh-cocatalysts/semiconductors.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2021)
Article
Materials Science, Multidisciplinary
Daibing Luo, Daichuan Ma, Shanhu Liu, Kazuya Nakata, Akira Fujishima, Liangzhuan Wu
Summary: Fluorine-containing diamond was successfully deposited onto a boron-doped diamond (BDD) substrate using the HFCVD process, resulting in a fluorine-modified BDD (F-BDD) electrode. The F-BDD electrode exhibited high efficiency in formaldehyde (HCHO) generation during CO2 reduction, with improved stability and anti-contamination properties compared to the BDD electrode.
DIAMOND AND RELATED MATERIALS
(2022)
Article
Chemistry, Physical
Valeriia Poliukhova, Wenwei Lei, Sovann Khan, Eunju Lee Tae, Norihiro Suzuki, Chiaki Terashima, Akira Fujishima, Ken-Ichi Katsumata, So-Hye Cho
Summary: A new photocatalyst composite, PVA-ZnOS hydrogel, was developed to separate nanoparticles from solution-based photocatalytic reactions. The PVA-ZnOS hydrogel showed excellent photocatalytic activity and potential for practical applications.
Article
Cell & Tissue Engineering
Kenji Yamatoya, Yuya Nagai, Naozumi Teramoto, Woojin Kang, Kenji Miyado, Kazuya Nakata, Tohru Yagi, Yoshitaka Miyamoto
Summary: The effective cryopreservation of difficult-to-freeze cells, such as differentiated neuronal cells, is crucial for cell therapy. We developed a serum-free freezing solution that showed promising results in preserving differentiated neuronal cells. Evaluation of the freezing solutions was based on cell viability, recovery rate, and morphology. Cryoprotectants like fetal bovine serum, antifreeze proteins, and sugars were found to be essential for protecting against freeze damage.
REGENERATIVE THERAPY
(2022)
Article
Chemistry, Multidisciplinary
Fumitaka Hayashi, Nanako Tatewaki, Tomohito Sudare, Chiaki Terashima, Katsuya Teshima
Summary: This study demonstrates the cation exchange property of submillimeter-sized K2Ti2O5 (KTO) crystals and reveals its high selectivity for Li+. The adsorption amounts of Li+ and Cs+ on KTO were found to be higher compared to conventional ion exchangers.
Article
Chemistry, Physical
Sovann Khan, Valeriia Poliukhova, Nomin Tamir, Jaehyun Park, Norihiro Suzuki, Chiaki Terashima, Ken-Ichi Katsumata, So-Hye Cho
Summary: This work demonstrates that photodeposition of Rh species on ZnO-ZnS heterostructure (ZnO/ZnS) can enhance their photocatalytic activity and secure their stability. As little as 0.02 at.% of Rh photodeposition can dramatically increase the activity and reduce self-corrosion of ZnO/ZnS. The optimal catalyst achieved an average H-2 production rate of 5.31 mmol(-1) g(-1) h(-1) and a maximum quantum efficiency of 22.9% at 365 nm.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Environmental Sciences
Dylan Shun Izuma, Norihiro Suzuki, Tomonori Suzuki, Haruka Motomura, Shiro Ando, Akira Fujishima, Katsuya Teshima, Chiaki Terashima
Summary: This article introduces a TiO2-coated net with photocatalytic antibacterial properties that can purify water in developing countries. By modifying the TiO2 particles, a highly water-durable photocatalyst coating was prepared. The results showed that the coated net effectively eliminated E. coli from water, reducing the risk of infectious diseases.
Article
Chemistry, Multidisciplinary
Anuja A. Yadav, Yuvaraj M. Hunge, Seok-Won Kang, Akira Fujishima, Chiaki Terashima
Summary: Semiconductor-based photocatalyst materials have played a crucial role in the degradation of organic compounds. Photocatalysis is a simple, cost-effective, and environmentally friendly method for degrading organic compounds. In this study, vanadium pentoxide (V2O5) and V2O5/RGO (reduced graphene oxide) composite materials were synthesized using a hydrothermal method. The prepared samples were characterized using various techniques. Raman analysis confirmed the presence of RGO characteristic peaks in the composite and different vibrational modes of V2O5. The V2O5/RGO composite exhibited superior photocatalytic performance compared to V2O5, indicating the importance of both the catalyst and light in the degradation process.
Article
Biochemistry & Molecular Biology
Paulina Rokicka-Konieczna, Agnieszka Wanag, Agnieszka Sienkiewicz, Dylan Shun Izuma, Ewa Ekiert, Ewelina Kusiak-Nejman, Chiaki Terashima, Atsuo Yasumori, Akira Fujishima, Antoni W. W. Morawski
Summary: The antibacterial activity of TiO2 photocatalysts modified by 3-aminopropyltriethoxysilane (APTES) was evaluated against Escherichia coli and Staphylococcus epidermidis under artificial solar light (ASL) irradiation. APTES-functionalized TiO2 samples were prepared through a solvothermal process followed by calcination. The best antibacterial properties were observed in the TiO2-4 h-120 degrees C-300 mM-Ar-300 degrees C sample, which had a positive zeta potential, high surface area, and porous volume.
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
Chemistry, Multidisciplinary
Shingo Machida, Shoma Niwa, Sho Usuki, Kazuya Nakata, Makoto Ogawa, Atsuo Yasumori, Ken-ichi Katsumata
Summary: Plate-like particles of orthorhombic NaNbO3 were obtained by solvothermal reaction, and ethanol was found to play a role in suppressing growth in one direction.
Article
Chemistry, Multidisciplinary
Fumitaka Hayashi, Kenta Furui, Nanako Tatewaki, Tomohito Sudare, Maru Kashiwazaki, Hiromasa Shiiba, Hideki Tanaka, Michihisa Koyama, Chiaki Terashima, Katsuya Teshima
Summary: Liquid exfoliation is a scalable and effective technique for preparing 2D materials. In this study, millimeter-sized K2Ti2O5 (KTO) single crystals were grown and then exfoliated to form nanosheet colloids in water. The best solvent for exfoliation was found to be H2O, and XANES measurements provided evidence of hydrolysis of KTO crystals in water, which accelerated the exfoliation process.
Article
Environmental Sciences
Norihiro Suzuki, Akihiro Okazaki, Kai Takagi, Izumi Serizawa, Yuki Hirami, Hiroya Noguchi, Sudhagar Pitchaimuthu, Chiaki Terashima, Tomonori Suzuki, Naoya Ishida, Kazuya Nakata, Ken-Ichi Katsumata, Takeshi Kondo, Makoto Yuasa, Akira Fujishima
Summary: A simple water treatment system utilizing a deep UV light source, mesoporous TiO2/BDD photocatalyst, and BDD electrode was prepared to decompose SMX in an advanced oxidation process. The combination of electrochemical and photocatalytic treatments effectively decomposed SMX and reduced the total organic carbon concentration to trace levels.
Article
Chemistry, Physical
Yifan Sun, Ye Lv, Wei Li, Jinli Zhang, Yan Fu
Summary: In this study, PtRu electrocatalysts were fabricated on carbon paper via cyclic electrodeposition for the electrocatalytic hydrogenation (ECH) of phenol. The Pt3Ru3 catalyst exhibited excellent activity and stability for the conversion of phenol to cyclohexanol at ambient temperature and various current densities. The in situ Raman spectroscopy and kinetic study revealed the hydrogenation mechanism of phenol over Pt3Ru3 in acidic electrolyte, providing an effective electrochemical strategy for the facile construction of durable electrode materials and efficient phenol hydrogenation.
JOURNAL OF CATALYSIS
(2024)
Article
Chemistry, Physical
Amir Shahzad, Khezina Rafiq, Muhammad Zeeshan Abid, Naseem Ahmad Khan, Syed Shoaib Ahmad Shah, Raed H. Althomali, Abdul Rauf, Ejaz Hussain
Summary: Photocatalytic hydrogen production through water splitting is an effective method for meeting future energy demands. In this study, researchers synthesized a 1 % Ag2S/Cu2S co-doped CdZnS catalyst and found that it can produce hydrogen at a higher rate. The co-doping of Ag2S and Cu2S in the CdZnS catalyst showed a synergistic effect, with Ag2S promoting oxidation reactions and Cu2S promoting reduction reactions.
JOURNAL OF CATALYSIS
(2024)
