Article
Environmental Sciences
Myrthe Van Hal, Silvia Lenaerts, Sammy W. Verbruggen
Summary: This study evaluates the performance of a visible light-active photocatalyst, WO3, compared to TiO2 under both UV and visible light. It also demonstrates an improved digital image-based analysis method for accurate detection and quantification of soot degradation.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Engineering, Environmental
Marica Muscetta, Roberto Andreozzi, Raffaele Marotta, Ilaria Di Somma
Summary: This study explored a method for depositing palladium from solutions containing it using a zinc oxide catalytic system under UV/visible-light radiation, and identified the factors affecting the use of ethanol as a sacrificial agent. Additionally, a method for recovering pure metallic palladium using zinc oxide dissolution was proposed.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Chemistry, Physical
I. A. Mkhalid, Ahmed Shawky
Summary: The removal of herbicides from water by photocatalysis is crucial for environmental remediation, and optimizing ecofriendly photocatalysts can enhance efficiency. In this study, Cu2O nanoparticles were synthesized and loaded with Cu nanoparticles to form Cu@Cu2O, achieving complete photodestruction of triazine herbicides by optimizing the Cu content.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Multidisciplinary
E. J. Hernandez-Moreno, A. Martinez de la Cruz, L. Hinojosa-Reyes, J. Guzman-Mar, M. A. Gracia-Pinilla, A. Hernandez-Ramirez
Summary: In this study, WO3/NaNbO3-coupled photocatalysts with different ratios were synthesized and characterized, with the composite with the highest WO3 mass ratio showing enhanced photocatalytic activity compared to the bare materials.
MATERIALS TODAY CHEMISTRY
(2021)
Article
Environmental Sciences
Manh Nhuong Chu, Lan T. H. Nguyen, Mai Xuan Truong, Tra Huong Do, Thi Tu Anh Duong, Loan T. T. Nguyen, Mai An Pham, Thi Kim Ngan Tran, Thi Cam Quyen Ngo, Van Huan Pham
Summary: In this study, Ce3+/Ce4+-doped ZrO2/CuO mixed semiconductor oxide was successfully prepared and showed high photocatalytic activity for the degradation of methylene blue (MB). The doping of Ce3+/Ce4+ in the material increased the photocatalytic activity, by reducing the (e(-)/h(+)) recombination rate and improving charge transfer. The materials were characterized using various techniques.
Article
Environmental Sciences
Raju Atla, Tae Hwan Oh
Summary: In this study, cost-effective and highly effective visible-light-driven photocatalysts, MoS2/Bi2WO6 heterostructure photocatalysts, were successfully fabricated. The photocatalysts demonstrated excellent visible light absorption performance and efficient electron/hole separation efficacy. The MoS2/Bi2WO6 heterostructure photocatalyst synthesized with 10 mg of Bi2WO6 and 100 mg of MoS2 showed the highest photocatalytic performance for tetracycline decomposition under visible light irradiation. The photocatalyst also exhibited a smaller band gap, enhanced visible-light absorption, and efficient charge carrier separation.
Article
Engineering, Environmental
Gongduan Fan, Rongsheng Ning, Zhongsen Yan, Jing Luo, Banghao Du, Jiajun Zhan, Lingshan Liu, Jin Zhang
Summary: Antibiotic contamination is a growing concern, leading to increased scrutiny on solutions like the AgAgCl/WO3/g-C3N4 (AWC) nanocomposites for trimethoprim degradation. Experimental results showed high efficiency with 99.9% of TMP degraded within 60 min using AWC at 0.5 g/L concentration. The proposed double photoelectron-transfer mechanism and identification of degradation pathways through theoretical calculations and experiments further support AWC as a promising photocatalyst for removing TMP from aquatic environments.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
Article
Engineering, Electrical & Electronic
Jin-tao Yue, Jian-ming Pang, Min Zeng, Shi-wen Li, Bao-quan Lin
Summary: A composite material with excellent visible-light driven photocatalytic activity was prepared in this study, incorporating bismuth tungstate, Mn-Zn ferrite, and graphene oxide. The composite showed good decomposing ability and reusability, attributed to the combination of graphene oxide and magnetic species, enhancing the photocatalytic effect.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2021)
Article
Environmental Sciences
Y. Naciri, A. Hsini, A. Bouziani, K. Tanji, B. El Ibrahimi, M. N. Ghazzal, B. Bakiz, A. Albourine, A. Benlhachemi, J. A. Navio, H. Li
Summary: A WO3@PANI heterojunction photocatalyst was synthesized and characterized. The photocatalytic efficiency of the WO3@PANI nanocomposite was significantly improved under visible light irradiation, attributed to increased visible light absorption and efficient charge carrier separation.
Article
Chemistry, Physical
Galina S. Zakharova, Natal'ya. Podval'naya, Tat'yana I. Gorbunova, Marina G. Pervova, Aidar M. Murzakaev, Andrey N. Enyashin
Summary: The controlled preparation of hexagonal tungsten trioxide was achieved under hydrothermal conditions by adjusting the initial reaction solution's pH value. The pH value was found to have a significant effect on the morphology, composition, texture, and thermal stability of the prepared oxides, as characterized by various analytical techniques. Among the prepared samples, h-WO3 nanobelts synthesized at a pH of 2.3 exhibited the highest photocatalytic performance for the degradation of the hardly destructible chlorarene -1,2,4-trichlorobenzene under UV excitation. This performance was superior to that of the commercial m-WO3, especially during the initial stage of the reaction. The difference in performance was attributed to the promoted formation of methoxy-radicals at the surface of h-WO3, in addition to the conventional formation of hydroxymethyl-radicals.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Physical
Anuja A. Yadav, Yuvaraj M. Hunge, Seok-Won Kang
Summary: In this study, a CeO2/MoS2 composite photocatalyst was successfully synthesized, exhibiting superior hydrogen production performance compared to individual CeO2 and MoS2. The composite showed higher photostability and faster charge transfer rate.
Article
Environmental Sciences
Sajith N. Veedu, Sheethu Jose, Soumya B. Narendranath, Maliyeckal R. Prathapachandra Kurup, Pradeepan Periyat
Summary: A series of Bi3+-doped ceria nanoparticles were successfully synthesized and showed effective photocatalytic degradation of methylene blue dye under visible light irradiation. Characterization through crystallography, microscopy, and spectroscopy confirmed the effectiveness of doping in the host lattice, along with the mesoporous nature of the nanoparticles. The shift of band gap energy from UV to visible region resulted in the photo degradation of the dye under visible light.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Article
Engineering, Environmental
Rudzani Ratshiedana, Olayemi Jola Fakayode, Ajay Kumar Mishra, Alex Tawanda Kuvarega
Summary: The study focuses on the impact of silver ion doping on the photocatalytic activity of titanium dioxide for the degradation of tartrazine. Results show that optimal degradation of tartrazine can be achieved with a certain amount of doping, suggesting potential applications for removing similar organic pollutants from water.
JOURNAL OF WATER PROCESS ENGINEERING
(2021)
Article
Materials Science, Multidisciplinary
Yuki Nakagawa, Yuya Hayashi, Subing Yang, Tamaki Shibayama
Summary: Oxygen vacancies were incorporated into tungsten oxide rods through ion irradiation and vacuum annealing, affecting the surface bonding states and visible light photocatalytic properties. Vacuum annealing reduced carbon contamination and increased the concentration of lattice oxygen species in the WO3-x phase. Irradiated WO3-x rods showed lower photocatalytic efficiency due to contamination and oxygen vacancies. Vacuum-annealed WO3-x rods with green coloration exhibited high photocatalytic efficiency due to enhanced visible light absorption and lower concentration of surface contamination and vacancies.
Review
Biochemistry & Molecular Biology
Angelina V. Zhurenok, Danila B. Vasilchenko, Ekaterina A. Kozlova
Summary: This review provides a comprehensive analysis of studies on graphitic carbon nitride as a photocatalyst for hydrogen production. Various approaches to synthesizing photocatalysts based on g-C3N4 are considered, including methods for modifying and improving the material's structural and photocatalytic properties. The review also discusses the effect of platinum cocatalyst on the activity of the resulting photocatalyst.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2023)
Review
Chemistry, Physical
Fuwei Xiang, Fang Cheng, Yongjiang Sun, Xiaoping Yang, Wen Lu, Rose Amal, Liming Dai
Summary: This article comprehensively reviews the fundamentals and recent progresses of flexible batteries in terms of battery constituent components, chemistry systems, device configurations, and practical applications. The current challenges and future opportunities for the research and development of flexible batteries are also discussed.
Article
Chemistry, Physical
Huabo Liu, Jiaxing Liang, John Watt, Richard D. Tilley, Rose Amal, Da-Wei Wang
Summary: In this study, a facile and scalable electrochemical deposition method for synthesizing quasi-layered conductive organic-inorganic hybrid films with controllable thickness and size was demonstrated. The films exhibited high gravimetric density and excellent capacitance performance, suggesting their great potential for electrochemical energy storage applications. The charge storage mechanism of the films was identified to be ion intercalation accompanied by change in oxidation states of the polymer backbone.
Review
Chemistry, Multidisciplinary
Thanh Tran-Phu, Rahman Daiyan, Xuan Minh Chau Ta, Rose Amal, Antonio Tricoli
Summary: Environmentally friendly Power-to-X (P2X) technologies are vital for sustainably harvesting and storing renewable energy with zero CO2 emission. Flame spray pyrolysis (FSP) emerges as a promising approach for synthesizing catalysts quickly, with implications for industrial engineering applications.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Article
Engineering, Environmental
Thanh Tran-Phu, Rahman Daiyan, Joshua Leverett, Zelio Fusco, Anton Tadich, Iolanda Di Bernardo, Alexander Kiy, Thien N. Truong, Qingran Zhang, Hongjun Chen, Patrick Kluth, Rose Amal, Antonio Tricoli
Summary: Research focused on multiscale engineering of Co3O4 electrocatalysts for oxygen evolution reaction (OER) using a highly scalable one-step hot-aerosol synthesis method to modulate surface chemistry and physical properties, achieving high OER performance. In situ Raman measurements revealed the role of catalytic active sites in the transformation from cobalt oxide moieties to oxyhydroxide species. Demonstrated potential of these earth-abundant electrocatalysts with a custom-designed electrolyzer, achieving high mass-specific current density and stable operation over 12 hours.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Chemistry, Multidisciplinary
Zeheng Lin, Qingran Zhang, Jian Pan, Constantine Tsounis, Ali Asghar Esmailpour, Shibo Xi, Hui Ying Yang, Zhaojun Han, Jimmy Yun, Rose Amal, Xunyu Lu
Summary: A hierarchical porous free-standing ORR electrode comprising cobalt single atoms on vertically aligned graphene nanosheets is demonstrated to achieve high H2O2 productivity. The electrode exhibits close to 100% H2O2 selectivity in an H-cell setup and achieves high peroxide concentration and low energy consumption in a gas-diffusion flow reactor.
ENERGY & ENVIRONMENTAL SCIENCE
(2022)
Article
Chemistry, Physical
Zhao Yang Dong, Jiajia Yang, Li Yu, Rahman Daiyan, Rose Amal
Summary: This study introduces the concept of hydrogen credit and establishes a trading framework for hydrogen credits in the international market, aiming to promote the global adoption and market development of green hydrogen through financial means. Case studies demonstrate the feasibility of this framework and the potential of a global hydrogen credit market.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Chemistry, Multidisciplinary
Ding Zhang, Constantine Tsounis, Zhipeng Ma, Dominique Djaidiguna, Nicholas M. Bedford, Lars Thomsen, Xunyu Lu, Dewei Chu, Rose Amal, Zhaojun Han
Summary: A metal-free edge-rich vertical graphene catalyst has been synthesized and exhibits superior performance for hydrogen peroxide production in alkaline media. By tailoring oxygen-containing functional groups and developing a vacuum-based method to enhance surface wettability, gas diffusion rate has been greatly improved without compromising Faradaic efficiency.
Article
Chemistry, Physical
Wibawa Hendra Saputera, Tze Hao Tan, Emma C. Lovell, Aditya Rawal, Kondo-Francois Aguey-Zinsou, Donia Friedmann, Rose Amal, Jason A. Scott
Summary: Binary TiO2/SiO2 oxides were synthesized as supports for a Pt catalyst, with varying mole ratios of silica. Increasing the TiO2 : SiO2 ratio led to changes in specific surface area, crystal structure, and defect sites, affecting the catalytic performance for formic acid oxidation under dark conditions and following UV light pre-treatment. The Pt/1TiO(2)-2SiO(2) catalyst exhibited the highest catalytic rate, attributed to the simultaneous presence of PtOads and defect sites following UV-light pre-treatment.
CATALYSIS SCIENCE & TECHNOLOGY
(2022)
Review
Materials Science, Multidisciplinary
Fran Kurnia, Jason A. Scott, Nagarajan Valanoor, Judy N. N. Hart
Summary: The review discusses the progress made in developing non-oxide semiconductor materials for efficient hydrogen production through the process of photoelectrochemical (PEC) water splitting. It highlights the design and engineering of new and existing non-oxide semiconductors as viable photoelectrodes. The review also addresses the challenge of stability in harsh electrolyte conditions and outlines future directions in the development of next-generation photoactive materials.
JOURNAL OF MATERIALS CHEMISTRY C
(2023)
Article
Chemistry, Multidisciplinary
Qiyuan Li, Lixue Jiang, Gan Huang, Da-Wei Wang, Jack Shepherd, Rahman Daiyan, Christos N. Markides, Robert A. Taylor, Jason Scott
Summary: A solar-driven system is proposed for hydrogen production from waste biomass with low carbon and water footprints. The system consists of a waste biomass concentrator, a biomass preconditioning reactor integrated with hybrid PV-thermal collectors, and a flow electrolysis cell equipped with a high-performance electrode. The system achieved an overall solar-to-hydrogen efficiency of 7.5% and also produced clean water and a value-added chemical by-product. This work presents a new route towards efficient and economically feasible renewable hydrogen production.
ENERGY & ENVIRONMENTAL SCIENCE
(2023)
Article
Engineering, Environmental
Timothy Zurrer, Emma Lovell, Zhaojun Han, Kang Liang, Jason Scott, Rose Amal
Summary: In this study, NiMg-CUK-1 metal-organic framework is used for the sequential capture and conversion of CO2 to methane. By tuning the Ni:Mg ratio and treatment temperature, optimized catalytic performance and CO2 capture functionality of the MOF are achieved. The introduced approach combines CO2 capture and conversion using a single dual-functional material capable of low-temperature CO2 desorption and CH4 production.
CHEMICAL ENGINEERING JOURNAL
(2023)
Review
Chemistry, Physical
Yi Fen Zhu, Bingqiao Xie, Rose Amal, Emma C. Lovell, Jason Scott
Summary: The valorization of carbon dioxide (CO2) to light olefins using sustainable energy input is of great industrial significance. Utilizing solar energy through light-capturing catalytic materials can reduce external heat requirements. This article explores the potential for producing multifunctional, light-responsive catalysts suitable for CO2-Fischer-Tropsch synthesis (FTS), discussing the chemical mechanisms and strategies for catalyst design, the adaptation of encapsulated structures in CO2-FTS, and the application of thermal-assisted photocatalytic systems for CO2 conversion.
Article
Chemistry, Multidisciplinary
Timothy Zurrer, Emma Lovell, Zhaojun Han, Kang Liang, Jason Scott, Rose Amal
Summary: This study developed a metal-organic framework (MOF) material loaded with Ru and Ni nanoparticles for the capture and conversion of CO2 to CH4. Low nanocatalyst loadings improved overall performance and facilitated complete CO2 release and conversion. Ru-loaded Mg-CUK-1 exhibited good oxygen tolerance, while Ni-loaded Mg-CUK-1 could not maintain initial catalytic performance. Ru aided the re-reduction of NiO to Ni, leading to enhanced overall performance of the hybrid material.
Article
Biochemistry & Molecular Biology
Denny Gunawan, Cui Ying Toe, Kaiwen Sun, Jason Scott, Rose Amal
Summary: Photoreforming is an efficient method to produce H2 and value-added chemicals. Selection and design of an appropriate photocatalyst is essential for the process. Carbon nitride with in situ photodeposited Ni cocatalyst can improve carrier dynamics and enhance the efficiency of ethanol photoreforming.
PHOTOCHEMICAL & PHOTOBIOLOGICAL SCIENCES
(2022)
Article
Materials Science, Multidisciplinary
Cui Ying Toe, Marlene Lamers, Thomas Dittrich, Hassan A. Tahini, Sean C. Smith, Jason Scott, Rose Amal, Roel van de Krol, Fatwa F. Abdi, Yun Hau Ng
Summary: The intrinsic carrier dynamics and defect density of cuprous oxide have been found to have a decisive influence on the photocatalytic activity. Specifically, the rhombic dodecahedral structure of Cu2O with dominant {110} facets exhibits higher carrier mobility and better charge separation efficiency compared to the cubic structure with {100} surfaces. The results suggest that facet-dependent properties play a crucial role in determining the photoactivity.
MATERIALS ADVANCES
(2022)
