Review
Environmental Sciences
Vivek Dhiman, Sandeep Singh, Varsha Srivastava, Sangeeta Garg, Amit D. Saran
Summary: In response to the global increase in energy demand, researchers have been investigating alternative green fuels to replace conventional fossil fuels. The demand for hydrogen is expected to grow by 4-5% in the next 5 years. Different production technologies are used to obtain high yields of hydrogen, with 96% currently produced by conventional methods and the remaining 4% produced by electrolysis of water. Photo-electrochemical (PEC) water splitting is a promising pathway for solar-to-hydrogen conversion, and recent advancements in photocatalysts have been highlighted in this article.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Materials Science, Ceramics
Hemalatha Parangusan, Jolly Bhadra, Zubair Ahmad, K. Karuppasamy, Shoaib Mallick, Farid Touati, Noora Al-Thani
Summary: In this study, a new hierarchical hetero nanostructured electrode BaTiO3/NiFe2O4 composite was designed and prepared by a facile hydrothermal process. The composite showed excellent photocatalytic activity and enhanced absorption in the visible region, making it a promising electrode for efficient oxygen evolution reaction.
CERAMICS INTERNATIONAL
(2022)
Article
Chemistry, Physical
Yazi Liu, Xiaojie Li, Huan He, Shaogui Yang, Guohua Jia, Shaomin Liu
Summary: Nanorod-like CoP nanoparticles were synthesized via gas-solid reaction from different precursors of Co(OH)(2) and Co3O4, then embedded into g-C3N4 nanosheets to form intimate heterojunctions. The resulting 0.5% CoP-CN exhibited superior activity in photocatalytic water splitting processes, with reduced over-potentials, more negative photo-reductive potentials, boosted interfacial charge transfer efficiency, and higher solar to hydrogen efficiency. The design of efficient CoP-based heterojunctions on covalent organic framework shows promise for direct water splitting applications utilizing solar energy.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2021)
Article
Chemistry, Physical
Zhenhua Pan, Vikas Nandal, Yuriy Pihosh, Tomohiro Higashi, Tian Liu, Jason A. Roehr, Kazuhiko Seki, Chiheng Chu, Kazunari Domen, Kenji Katayama
Summary: This study reveals the influence of surface energetics on the performance of a Mo-doped BiVO4 photoanode, and finds that photodeposition of cocatalysts can significantly enhance charge separation efficiency and injection efficiency for water oxidation.
Review
Chemistry, Physical
Maryum Ali, Erum Pervaiz, Umair Sikandar, Yaqoob Khan
Summary: In recent years, there has been significant interest in developing clean and renewable alternative energy resources, with hydrogen being considered a sustainable, clean, and energy-rich fuel. Photoelectrochemical water-splitting is seen as a promising technology for hydrogen production, with research focusing on efficient catalysts to lower energy requirements and make the process commercially viable. By utilizing Zr and C based catalyst materials, researchers aim to make further progress in the future for practical PEC water-splitting applications.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Chemistry, Physical
Lei Jin, Haiguang Zhao, Zhiming M. Wang, Federico Rosei
Summary: This article summarizes the latest progress in tailoring the materials, structure, and performance of QDs-based PEC H-2 generation, and discusses the impact of specific features of QDs and charge generation and transfer on the performance of PEC devices. Future challenges and opportunities for high-efficiency and stable QDs-based PEC applications are also discussed.
ADVANCED ENERGY MATERIALS
(2021)
Review
Engineering, Chemical
Ravindranadh Koutavarapu, Shaik Gouse Peera, Tae Gwan Lee, Chimpiri Rao Myla, Dong-Yeon Lee, Jaesool Shim, Suresh Kannan Balasingam
Summary: Graphitic carbon nitride (g-C3N4) as a two-dimensional layered material has unique physicochemical properties suitable for various energy conversion and storage applications, especially as a durable catalyst support material in PEC water splitting reactions. Recent studies on g-C3N4-based binary and ternary heterostructures have demonstrated superior PEC water splitting performance, but using C3N4 as an efficient catalyst support material also presents limitations and challenges that need to be addressed.
Article
Chemistry, Multidisciplinary
Lei Ran, Shi Qiu, Panlong Zhai, Zhuwei Li, Junfeng Gao, Xiaomeng Zhang, Bo Zhang, Chen Wang, Licheng Sun, Jungang Hou
Summary: By utilizing a three-dimensional ordered macroporous inverse opal array and an ultrathin carbon-nitride-based layer intercalated technology, significant improvements were achieved in the performance of photoelectrochemical water splitting. The conformal heterojunction photoanode exhibited high current density and incident photon-to-current efficiency under simulated sunlight illumination, showcasing a promising approach for sustainable energy conversion systems.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2021)
Article
Materials Science, Multidisciplinary
Mahshid Farahi, Fariba Fathirad, Tayebeh Shamspur, Ali Mostafavi
Summary: In this work, WS2 and g-C3N4 monolayers were synthesized and used to prepare WS2/g-C3N4 nanostructures through a two-step process. Graphene oxide nanoribbons were synthesized and applied to prepare three-component gC(3)N(4)/WS2@rGONR(x) nanocomposites. The synthesized nanocomposites were evaluated using various characterization techniques, and it was found that g-C3N4/WS2@rGONR(2) photocatalyst exhibited the best catalytic performance and stability in the hydrogen evolution reaction.
MATERIALS CHEMISTRY AND PHYSICS
(2023)
Article
Environmental Sciences
I. Neelakanta Reddy, L. Veeranjaneya Reddy, N. Jayashree, Ch Venkata Reddy, Migyung Cho, Dongseob Kim, Jaesool Shim
Summary: V-doped g-C3N4 nanostructures were prepared via direct calcination, which showed enhanced visible light absorption property, increased charge separation and transportation, and significantly enhanced water splitting activity. The improvement in catalytic performance can be attributed to the synergistic effects of prolonged light absorption, improved electron and hole transfer, and extra active catalytic sites for water splitting.
Article
Chemistry, Physical
Yusaku Matsui, Tetsuya Yamada, Sayaka Suzuki, Takeharu Yoshii, Hirotomo Nishihara, Katsuya Teshima
Summary: The study demonstrates a new method of fabricating Ta3N5 photoanodes using evaporated TaF5 as the source of tantalum. The as-synthesized Ta3N5 layers were uniformly deposited on different large-area substrates with columnar crystals, functioning as efficient active photoanodes for PEC water splitting. This approach could lead to high-quality Ta-based photoanodes over large areas, using insights gained from the precursor TaF5 for nitrides.
ACS APPLIED ENERGY MATERIALS
(2021)
Review
Chemistry, Physical
Khuzaimah Arifin, Rozan Mohamad Yunus, Lorna Jeffery Minggu, Mohammad B. Kassim
Summary: Photoelectrochemical water splitting is an ideal method for clean hydrogen production, but developing photoelectrodes that meet the criteria remains a challenge for commercialization. Titanium dioxide nanotubes, with their one-dimensional structure, have a relatively wide bandgap, limiting light utilization. Various approaches, such as surface modification and band structure modification, have been developed to improve TiO2 nanotubes, achieving high photocurrent density and stability.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Review
Nanoscience & Nanotechnology
Irfan Ullah, Akhtar Munir, Ali Haider, Najeeb Ullah, Irshad Hussain
Summary: Sunlight and water are plentiful and sustainable energy resources. The development of artificial catalytic systems inspired by natural photosystems for solar-induced water splitting to produce hydrogen is a challenging task for chemists and energy experts. Despite considerable research efforts, the development of efficient, stable, and economic photocatalysts remains a goal for large-scale hydrogen production.
Article
Chemistry, Physical
P. Jineesh, Aslam Hossain, Jahangeer Ahmed, Saad M. Alshehri, Yuanbing Mao, S. M. A. Shibli
Summary: This paper investigates the influence of sacrificial agents and proton sources on photocatalytic hydrogen evolution from solar water splitting. The superior effect of cactus-type bpydc@Fe2O3/TiO2 hybrid nanomaterials on hydrogen evolution is studied by tuning the bandgap of TiO2 through composite formation. The addition of methanol remarkably enhances the hydrogen evolution rate, and aniline hydrochloride shows the highest rate of hydrogen generation as a proton source. By analyzing the influences on hydrogen production, new insights may be gained for the architectural design of effective photocatalysts for solar energy conversion.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Nanoscience & Nanotechnology
Liqun Wang, Wenping Si, Yuhang Ye, Sihui Wang, Feng Hou, Xinggang Hou, Hongkun Cai, Shi Xue Dou, Ji Liang
Summary: The TiO2 nanotube array implanted with Cu ions and decorated with polymeric carbon nitride shows significantly improved performance in photoelectrochemical water splitting, thanks to the synergistic effect of Cu-ion implantation and PCN decoration.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Environmental Sciences
Rui Wang, Ch Venkata Reddy, Bhusankar Talluri, Raghava Reddy Kakarla, Rustem R. Zairov, Jaesool Shim, Tejraj M. Aminabhavi
Summary: This study synthesized pristine and cobalt (Co)-doped V2O5 samples by solvothermal method and investigated their photo-degradation activity and photoelectrochemical (PEC) water oxidation properties. The doped V2O5 catalyst showed enhanced photodegradation of crystal violet CV and Cr (VI) reduction compared to the pristine catalyst. The doped electrode exhibited improved photocurrent density and charge-transfer properties compared to the pristine electrode. Therefore, the prepared hexagonal-shaped V2O5 is a suitable material for eliminating environmental contaminants and water splitting for hydrogen generation.
ENVIRONMENTAL RESEARCH
(2023)
Article
Engineering, Environmental
Nguyn Hoang Ly, Vu Thi Huong, Bui Van Duc, Phuong-Dong Nguyen, Tejraj M. Aminabhavi, Yasser Vasseghian, Sang-Woo Joo
Summary: A CO2 capture and photocatalytic conversion system was used to study heterogeneous catalytic reactions in a biofluidic channel. The photo-reacted species produced in a microalgae fluid sample were analyzed using in situ Raman scattering and gas chromatography with mass spectroscopy. The results showed that microalgae have the potential to play significant roles in carbon capture, and the spectral features and time-dependent Raman spectral behaviors varied depending on the surface reaction conditions of the nanoparticles.
CHEMICAL ENGINEERING JOURNAL
(2023)
Review
Environmental Sciences
Rajesh K. Srivastava, Nagaraj P. Shetti, Kakarla Raghava Reddy, Mallikarjuna N. Nadagouda, Michael Badawi, Adrian Bonilla-Petriciolet, Tejraj M. Aminabhavi
Summary: The review discusses the importance of proper management and disposal of biowastes generated from natural resources and anthropogenic activities. It highlights the potential of using these biomaterials as low-cost raw feedstock to produce bioenergy and value-added products. Various technologies for the transformation and valorization of biowastes are analyzed, along with their applications in water pollution, soil fertility, and green energy generation.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2023)
Article
Environmental Sciences
Nastaran Azizollahi, Ali Fatehizadeh, Hamidreza Pourzamani, Ensiyeh Taheri, Tejraj M. Aminabhavi
Summary: This research explores the degradation of 2,4-dichlorophenol (2,4-DCP) using lab-scale hydrodynamic cavitation (HC) with the addition of zero-valent iron (Fe-0) as a catalyst for sulfate radical (SO4 center dot-) generation. The degradation efficiency was higher at acidic pH and depended on the Fe-0 and sulfite (SO32-) dose. Under optimal conditions, the Fe-0/HC/sulfite approach significantly enhanced the degradation efficiency compared to HC alone. (OH)-O-center dot and SO4 center dot- radicals played a dominant role in the degradation process. The turbulence model showed that increasing inlet pressure intensified bubble collapse due to higher turbulence tension.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2023)
Article
Polymer Science
Sarvesh Paliwal, Jaiprakash Sharma, Vivek Dave, Swapnil Sharma, Kanika Verma, Kajal Tak, Raghava Reddy Kakarla, Veera Sadhu, Pavan Walvekar, Tejraj M. Aminabhavi
Summary: The incidence of pulmonary arterial hypertension (PAH) has increased significantly, making it an immediate concern. Drug-loaded nano-systems have shown promising results in controlling PAH compared to plain drugs. This study aimed to prepare and characterize sildenafil-encapsulated PEGylated liposomes for effective treatment of PAH. The optimized liposomal formulation exhibited promising properties, including sustained release of sildenafil and improved vasorelaxant response in ex vivo studies. Further validation is needed for clinical studies in the management of PAH.
Review
Chemistry, Analytical
Niharika G. Jha, Daphika S. Dkhar, Sumit K. Singh, Shweta J. Malode, Nagaraj P. Shetti, Pranjal Chandra
Summary: To combat pathogens or tumors, antimicrobial or antineoplastic drugs have been developed, however, cells have evolved mechanisms to resist such drugs. Microorganisms or cancer cells that exhibit resistance to multiple drugs are known as multidrug-resistant (MDR) cells. The drug resistance status of a cell can be determined through analyzing genotypic and phenotypic changes caused by physiological and biochemical alterations. Conventional methods for determining drug resistance status have drawbacks, and biosensors with low detection limit have been engineered as an alternative solution.
Article
Environmental Sciences
Md. Ahmaruzzaman, Prerona Roy, Adrian Bonilla-Petriciolet, Michael Badawi, Sharanabasava Ganachari, Nagaraj P. Shetti, Tejraj M. Aminabhavi
Summary: Low-cost and reliable wastewater treatment is a global concern. Hydrogels are interesting materials with high adsorption capacities that can be synthesized using green methods. This review focuses on the preparation, characterization, and adsorption properties of hydrogels for water purification. The review receives a rating of 7 out of 10.
Article
Biophysics
B. R. Karishma, G. Manasa, Arvind K. Bhakta, T. Maiyalagan, Ronald J. Mascarenhas, Nagaraj P. Shetti
Summary: P.HCl is an early and commonly used local anesthetic drug, but excessive administration can lead to systemic toxicity. Therefore, it is crucial to develop a sensor for real-time monitoring and quality control of the drug during its industrial preparations. In this study, a simple yet highly selective and sensitive sensor based on BaO-MWCNT/CPE was fabricated for P.HCl detection.
COLLOIDS AND SURFACES B-BIOINTERFACES
(2023)
Review
Energy & Fuels
Nagaraj P. P. Shetti, Amit Mishra, Soumen Basu, Tejraj M. M. Aminabhavi, Abdullah Alodhayb, Saravanan Pandiaraj
Summary: MXenes have attracted significant attention as outstanding materials for energy storage applications due to their extraordinary properties such as layered structure, metal-like high thermal stability, good mechanical strength, high conductivity, presence of active sites, and terminal functional groups. However, their performance in Li-ion batteries is not satisfactory compared to the state-of-the-art electrodes. Attempts have been made to modify their surfaces and/or surface terminal groups, as well as synthesize MXene-based composites, to improve their performance. This review focuses on MXene-based electrode materials for applications in Li-ion batteries.
Article
Environmental Sciences
Manisha Sharma, Deepanshi Rajput, Vinod Kumar, Indu Jatain, Tejraj M. Aminabhavi, Gunda Mohanakrishna, Ravi Kumar, Kashyap Kumar Dubey
Summary: Excessive usage and unrestricted discharge of antibiotics in the environment lead to their accumulation in the ecosystem. Photodegradation of four commonly consumed antibiotics was studied using Cu2O-TiO2 nanotubes. The cytotoxicity of the transformed products was evaluated on cell lines.
ENVIRONMENTAL RESEARCH
(2023)
Review
Nanoscience & Nanotechnology
Neeraj Sohal, Sonali Singla, Shweta J. J. Malode, Soumen Basu, Banibrata Maity, Nagaraj P. P. Shetti
Summary: The increasing demand for facile, cheap, and green approaches for creating emerging materials from bioresources has led to the development of graphene quantum dots (GQDs). Biomass-derived GQDs have gained attention due to their green, inexpensive, and environmental-friendly nature. This review discusses the challenges and methodologies of converting bioprecursors into ecofriendly GQDs, and explores their attractive properties such as large surface area, low toxicity, and good biocompatibility. It also highlights the potential applications of biomass-derived GQDs in the biomedical field and energy applications, as well as future research directions.
ACS APPLIED NANO MATERIALS
(2023)
Article
Chemistry, Applied
Balwant S. Paliya, Vivek K. Sharma, Minaxi Sharma, Deepti Diwan, Quang D. Nguyen, Tejraj M. Aminabhavi, Gaurav Rajauria, Brahma N. Singh, Vijai Kumar Gupta
Summary: Protein-polysaccharide nanoconjugates are covalently interactive networks with biocompatibility and biodegradability properties, which are being extensively researched for their potential applications in the food nanotechnology field. These nanoconjugates can serve as wall materials in the formation of various nanostructures for encasing nutraceuticals, thus enhancing their delivery and stability in the food industry. Commonly used edible polysaccharides and proteins have been utilized as building blocks in nano-encapsulation systems due to their favorable physicochemical properties. This article provides a comprehensive discussion on food-grade proteins and polysaccharides as nano-encapsulation biomaterials, fabrication methods, and their applications in delivering plant-derived nutraceuticals.
Article
Environmental Sciences
Nadjem Lakhdari, Delloula Lakhdari, Mohammed Berkani, Yasser Vasseghian, Fatsah Moulai, Mohammed M. Rahman, Rabah Boukherroub, Tejraj M. Aminabhavi
Summary: NiFe-PANI nanocomposites were synthesized and used for efficient photocatalytic degradation of diclofenac sodium (DCF) in water sources. The nanocomposites showed a stable and superior photocatalytic efficiency, even after cycles of recycling.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2024)
Article
Green & Sustainable Science & Technology
Samaneh Mashhadikhan, Reyhane Ahmadi, Abtin Ebadi Amooghin, Hamidreza Sanaeepur, Tejraj M. Aminabhavi, Mashallah Rezakazemi
Summary: This review paper explores the chemistry and applications of high-temperature polymers used as membranes for wastewater treatment and water recycling. It emphasizes the importance of thermally stable polymer membranes in purifying wastewater at elevated temperatures and summarizes recent advances in membrane fabrication techniques.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2024)
Review
Environmental Sciences
Hossein Molavi, Kamyar Mirzaei, Erfan Jafarpour, Ali Mohammadi, Mohammad Sepehr Salimi, Mashallah Rezakazemi, Megha M. Nadagouda, Tejraj M. Aminabhavi
Summary: Nanodiamonds (NDs) are carbon-based nanoparticles with high surface area, chemical stability, and unique adsorption properties, making them promising for wastewater treatment. This review highlights the application of NDs in adsorption, photocatalytic degradation, and membrane separation, emphasizing their potential, challenges, and future directions in the field.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2024)
