Article
Chemistry, Physical
Romiyo Justinabraham, Subramanian Sowmya, Arulappan Durairaj, Thangavel Sakthivel, Ramachandran John Wesley, Vijendran Vijaikanth, Samuel Vasanthkumar
Summary: Two-dimensional carbon-related materials with superior charge separation and transport properties have been widely used in photocatalytic and electrochemical applications. In this study, a hydrothermally synthesized antimony sulfoiodide-doped g-C3N4 composite was prepared and showed excellent charge storage and transport properties. The physio-chemical properties of the synthesized materials were characterized, and the photocatalytic and electrochemical performance was evaluated. The results demonstrated that the composite material exhibited enhanced photocatalytic and electrochemical performance compared to the synthesized SbSI and g-C3N4 materials.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Physical
Liangpang Xu, Lejing Li, Zhuofeng Hu, Jimmy C. Yu
Summary: A novel pyrophosphate-based proton shuttle strategy is proposed to improve on-site photocatalytic H2O2 generation in alkaline waters for organic pollutant treatment. The pyrophosphate-incorporated g-C3N4 (PCN) photocatalyst shows a record-high alkaline H2O2 synthesis rate and apparent quantum yield under visible light. Mechanism study demonstrates that the pyrophosphate serves as a proton shuttle to adsorb and provide protons, and as active sites for O2 adsorption and activation to promote O2 reduction, greatly benefiting the formation of H2O2. This work provides a promising approach for preparing photocatalysts with superior alkaline H2O2 synthesis efficiency for on-site treatment of organic pollutants.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2023)
Article
Environmental Sciences
M. C. Shibu, M. D. Benoy, S. Shanavas, J. Duraimurugan, G. Suresh Kumar, Mohammad Abu Haija, P. Maadeswaran, T. Ahamad, Quyet Van Le, S. M. Alshehri
Summary: SnO2 and SnO2/rGO nanostructures were successfully synthesized and their properties were studied using various techniques. The results showed an enhancement in the photocatalytic properties of the SnO2/rGO nanostructures.
Article
Nanoscience & Nanotechnology
Jiachi Liang, Xinqi Li, Jianliang Zuo, Jing Lin, Zili Liu
Summary: The binary composite catalyst of g-C3N4 and BiOI shows great potential in visible light catalytic degradation of organic pollutants. By adjusting the scale and morphology of the heterojunction composite catalyst, a Z-scheme heterojunction composite catalyst (0D/2D g-C3N4/BiOI) was developed, which demonstrates superior performance in degrading organic pollutants and provides a universal approach to enhance photocatalytic efficiency.
ADVANCED COMPOSITES AND HYBRID MATERIALS
(2021)
Article
Materials Science, Multidisciplinary
M. Yadav, A. Yadav, N. Thorat, R. Varma, S. Pillai, R. Fernandes, R. Patel, N. Patel
Summary: In this study, an efficient Ag/Fe-g-C3N4 NS photocatalyst was synthesized by combining Fe doping, nanostructuring, and Ag loading. Fe doping modified the electronic and optical properties, nanosheet formation increased the number of active sites, and Ag anchoring facilitated charge separation. The integration of these three strategies resulted in a 5-fold improvement in the photocatalytic degradation of organic pollutants, showing a synergistic effect.
Article
Chemistry, Physical
Huinan Che, Jian Wang, Xin Gao, Juan Chen, Peifang Wang, Bin Liu, Yanhui Ao
Summary: In this study, potassium and iodine were co-doped into g-C3N5 for efficient photocatalytic generation of H2O2. The co-doping of K and I significantly improved the oxygen adsorption capacity, selectivity of two-electrons oxygen reduction reaction, and charge carrier separation efficiency, leading to a remarkable enhancement in photocatalytic H2O2 production activity.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2022)
Article
Chemistry, Physical
Dandan Zhu, Qixing Zhou
Summary: In this study, nitrogen-doped g-C3N4 (NCN) with an extremely narrow band gap was prepared and applied to enhance the photocatalytic activity for phenol degradation. Experimental and theoretical results showed that nitrogen doping improved photogenerated carrier separation and charge transfer, leading to increased visible light absorption and enhanced photocatalytic performance. The introduction of foreign atoms in the matrix can be a strategy to enhance the photocatalytic activity of photocatalysts.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2021)
Article
Engineering, Chemical
Reyhaneh Eizi, Tahereh Rohani Bastami, Vahid Mahmoudi, Ali Ayati, Hesamaddyn Babaei
Summary: In this study, novel CuFe-LDH/g-C3N4 (CFL/CN) nanocomposites were prepared using an ultrasound-assisted method. The results showed that the sono-synthesis method improved the adsorption performance and stability of the nanomaterials, making them suitable for removing organic dyes from aqueous effluents.
JOURNAL OF THE TAIWAN INSTITUTE OF CHEMICAL ENGINEERS
(2023)
Article
Environmental Sciences
Akash Balakrishnan, Mahendra Chinthala, Rajesh Kumar Polagani, Dai-Viet N. Vo
Summary: Tetracycline is one of the most widely used antibiotics in human therapy, veterinary applications, and agricultural activities. Its consumption is expected to increase by over 30% by 2030. This review focuses on the recent advancements in photocatalytic degradation of tetracycline using graphitic carbon nitride-based photocatalysts, which offer higher visible light activity, low cost, and non-toxicity. The properties, worldwide consumption, occurrence, and environmental impacts of tetracycline are comprehensively discussed. The occurrence of tetracycline in various water matrices has been confirmed, with a maximum concentration of 54 μg/L. Among different graphitic carbon nitride-based materials, heterojunctions have shown the highest photocatalytic degradation efficiency of 100% with reusability for up to 5 cycles. Photocatalytic membranes are found to be feasible due to ease of recovery and better reusability. The limitations and efficient solutions for graphitic carbon nitride-based wastewater treatment technology are also emphasized in detail.
ENVIRONMENTAL RESEARCH
(2023)
Article
Chemistry, Physical
Xindan Zhang, Jun Wang, Bingbing Xiao, Yujuan Pu, Yunchuan Yang, Jisheng Geng, Dongyu Wang, Xianjie Chen, Yunxia Wei, Kun Xiong, Yongfa Zhu
Summary: In this study, a hydrogen peroxide-free resin photo-Fenton system was developed for efficient degradation of organic pollutants. The system exhibited excellent performance due to the synergistic effect of hydroxyl radicals and holes, resulting in significantly higher degradation rates compared to other systems. The high performance was mainly attributed to the reduction of iron ions by electrons and increased utilization of hydrogen peroxide, as well as the prevention of macromolecular polymer intermediates, leading to high mineralization efficiency. This finding offers a promising route for eco-friendly and efficient wastewater treatment using visible-light photo-self-Fenton systems.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2022)
Article
Environmental Sciences
Akash Balakrishnan, Mahendra Chinthala
Summary: In this study, oxalic acid-induced chemically functionalized graphitic carbon nitride (OCN) was prepared using a one-pot calcination method. The OCN exhibited a highly porous structure with enhanced surface area and abundant amino groups, resulting in a maximum tetracycline removal of 92% within 90 min of visible light illumination. The increased presence of amino groups and enhanced visible light absorption were attributed to the exceptional photocatalytic efficacy of the functionalized OCN.
ENVIRONMENTAL POLLUTION
(2023)
Article
Chemistry, Physical
Tingcha Wei, Juan Xu, Caixia Kan, Le Zhang, Xingzhong Zhu
Summary: The study focuses on the construction of a g-C3N4/TiO2 heterostructure with tailored Au nanoparticles for efficient charge separation in photocatalysis. The enhanced charge separation leads to excellent photocatalytic activity for pollutant degradation and water splitting, with superoxide radicals identified as playing a crucial role in the catalytic process. Insights into the distinct roles of Au in heterostructure for significantly enhanced charge separation are provided, paving the way for the design of high-efficiency heterostructure photocatalysts with noble metal decoration.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Environmental Sciences
Deepika Jamwal, Vishal Mutreja, Surinder Kumar Mehta, Akash Katoch, Sang Sub Kim
Summary: WO3 nanostructures were synthesized using hydrothermal route with different shape and size directing agents. The twin-tail surfactant led to the formation of cube-shaped nanoparticles, while using C(14)TAB resulted in the formation of a web of chains type nanostructure. The cube-shaped nanoparticles showed better photocatalytic efficacy for organic pollutant degradation compared to the chain-structured nanostructures.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Engineering, Chemical
Jiaqi Hu, Fangyuan Chen, Kelei Mu, Jing Zhang, Jinfeng Lu
Summary: In this study, a 2D/2D van der Waals heterojunction of oxygen-vacancy-rich Bi3O4Br loaded reduced graphene oxide (rGO) was used for efficient degradation of various pollutants under visible light. The performance of Bi3O4Br/rGO was significantly higher than that of Bi3O4Br alone, and it exhibited enhanced O-center dot(2)? production ability. Additionally, the interfacial charge migration pathway was unraveled, with efficient transfer of electrons from Bi3O4Br to rGO through the VDW interface, resulting in the participation of more photogenerated carriers in reactions.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Article
Chemistry, Physical
Xiaoyu Yang, Boming Tang, Xuejuan Cao, Yongjie Ding, Mingxuan Huang
Summary: The study explores the feasibility of constructing a light-storing assisted photocatalytic composite using blue long afterglow phosphor and g-C3N4, defining the concept of cumulative pollutant degradation concentration. The experimental results show that the composite exhibits enhanced photocatalytic activity under illumination and can continuously degrade pollutants in the dark.
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
(2021)
Article
Water Resources
Loide Ndelimona Ndapandula Shipingana, Harikaranahalli Puttaiah Shivaraju, Shivamurthy Ravindra Yashas
Summary: This study investigates the occurrence and sources of four pharmaceutical compounds in wastewater in Mysuru, India. It finds that these compounds persist in treated wastewater and pose ecological risks to aquatic species. The study also reveals the contribution of hospital discharges and community disposal of unused medications to the presence of pharmaceutical compounds in the local environment.
APPLIED WATER SCIENCE
(2022)
Article
Environmental Sciences
Yadav Sneha, Shivamurthy Ravindra Yashas, Tenzin Thinley, Samuel Prabagar Jijoe, Harikaranahalli Puttaiah Shivaraju
Summary: This study investigates the visible light photocatalysis of lomefloxacin using magnesium titanate. The nanomaterial exhibited high efficiency in degrading lomefloxacin under specific conditions, and its morphology, functional, and optical characteristics were analyzed through computational analysis. The findings suggest that using a photocatalytic system for treating antibiotics in aqueous environments is feasible.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Article
Environmental Sciences
Jijoe Samuel Prabagar, Shivamurthy Ravindra Yashas, Bannimath Gurupadayya, Kitirote Wantala, Das Bhusan Diganta, Harikaranahalli Puttaiah Shivaraju
Summary: In this study, lanthanum copper oxide was synthesized and characterized for doxycycline degradation. The catalyst exhibited enhanced photocatalytic degradation under visible light, showing its potential for environmental applications.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Article
Engineering, Electrical & Electronic
Saligrama Mahesh Abhishek, Ningappa Kumara Swamy, Shivamurthy Ravindra Yashas, Harikaranahalli Puttaiah Shivaraju, Nelligere Arkeswaraiah Chamaraja
Summary: The study focuses on the hydrothermal synthesis of Cu2WS4 for photocatalytic degradation of the toxic antibiotic LOM in water, revealing the morphology, composition, and properties of the material. The research found that hydroxyl radicals were the primary oxidant responsible for LOM degradation, and Cu2WS4 showed high efficiency due to quick electron transfer, effective visible-light absorption, and stability.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2022)
Article
Engineering, Electrical & Electronic
Buhalli Shivanna Santhosh, Shivamurthy Ravindra Yashas, Ningappa Kumara Swamy, Harikaranahalli Puttaiah Shivaraju
Summary: The glycol-assisted sol-gel process was used to synthesize gadolinium ortho-ferrite (GdFeO3) nanoparticles, which showed visible-light-responsive photocatalytic activity for the degradation of doxycycline hydrochloride (DOX) under LED irradiation. The research found that GdFeO3 exhibited high degradation efficiency of DOX under specific conditions and maintained good catalyst stability for three consecutive cycles.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2022)
Article
Chemistry, Physical
Mukkati Praveen Ujwal, Shivamurthy Ravindra Yashas, Harikaranahalli Puttaiah Shivaraju, Ningappa Kumara Swamy
Summary: This study presents the synthesis of GdFeO3/PANI composite and its applications in electrochemical detection and photocatalytic decomposition of AC. The composite exhibits excellent electrochemical performance and photocatalytic efficiency, making it a reliable sensor for the detection and quantification of AC in environmental samples.
SURFACES AND INTERFACES
(2022)
Article
Engineering, Electrical & Electronic
Kamaladdin Abedi, Behzad Shahmoradi, Kitirote Wantala, Totsaporn Suwannaruang, Nader Amini, Afshin Maleki, S. M. Lee, Harikaranahalli Puttaiah Shivaraju
Summary: This research aims to utilize Mo:TiO2 nanoparticles for the photocatalytic degradation of humic acid in water under visible light spectrum. By optimizing operational parameters, the highest degradation efficiency was achieved. The experiment results indicate that 1% Mo:TiO2 nanoparticles exhibited the best degradation performance.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2022)
Article
Environmental Sciences
H. S. Anusha, S. Yadav, T. Tenzin, J. S. Prabagar, K. M. Anilkumar, W. Kitirote, H. P. Shivaraju
Summary: By synthesizing visible-light-responsive CeMnO3 perovskite nanomaterial, the degradation of tetracycline hydrochloride antibiotic and methylene blue dye residues in water was successfully addressed. The catalyst exhibited excellent photocatalytic activity under visible light sources and showed high efficiency in degrading pollutants. The study verified the cyclic capability and chemical stability of the catalyst.
INTERNATIONAL JOURNAL OF ENVIRONMENTAL SCIENCE AND TECHNOLOGY
(2023)
Article
Chemistry, Physical
Tenzin Thinley, Jijoe Samuel Prabagar, Sneha Yadav, Hosakote Shankara Anusha, Kotermane Mallikarjunappa Anilkumar, Wantala Kitirote, Behzad Shahmoradi, Harikaranahalli Puttaiah Shivaraju
Summary: In this study, a lanthanum nickelate reduced graphene oxide (LaNiO3-rGO) interfaced composite material was synthesized and characterized. The material showed significant potential in adsorbing trace organic pollutants and exhibited high photocatalytic activities towards antibacterial potential and demineralization of complex organic pollutants. The composite material also demonstrated antimicrobial activity against Escherichia coli and Staphylococcus aureus microorganisms.
JOURNAL OF MOLECULAR STRUCTURE
(2023)
Article
Engineering, Environmental
Shivamurthy Ravindra Yashas, Erez B. Ruck, Hailu Demissie, Naama Manor-Korin, Youri Gendel
Summary: A new recycling and metal recovery method for polycrystalline silicon photovoltaic panels is proposed, with a focus on the recovery of silver. Physical and thermal treatments are used to separate PV cells, and a sulphuric acid-hydrogen peroxide leaching agent is used to extract silver. Platinum-embedded activated carbon catalyst and electrolysis process are employed for the selective recovery and concentration of silver. Additionally, a recovery process for aluminum, copper, and silicon is also proposed.
Article
Engineering, Environmental
Yadav Sneha, Jijoe Samuel Prabagar, Thinley Tenzin, Behzad Shahmoradi, Kitirote Wantala, Sami Rtimi, Afshin Maleki, Diganta B. Das, Harikaranahalli Puttaiah Shivaraju
Summary: This study synthesized AgBiS2 nanorod-shaped material with visible-light absorption and used it for photocatalytic degradation of amoxicillin. The potential pathways and generated intermediates during the degradation process were investigated, and the material exhibited antibacterial and antibiofilm activity.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Article
Green & Sustainable Science & Technology
Y. Sneha, V. Divya, J. S. Prabagar, T. Tenzin, A. Maleki, B. Shahmoradi, K. Wantala, D. Jenkins, G. Mckay, H. P. Shivaraju
Summary: In this study, a bimetallic-organic framework was successfully synthesized and characterized. The material showed excellent performance in photocatalytic degradation, photoreduction, and antibacterial activity.
MATERIALS TODAY SUSTAINABILITY
(2023)
