Article
Biochemistry & Molecular Biology
Yong Li, Yanfang Liu, Mingqing Zhang, Qianyu Zhou, Xin Li, Tianlu Chen, Shifeng Wang
Summary: This study successfully prepared Ag3PO4/TiO2(B) heterojunction composite photocatalyst using the abundant solar energy resources in Tibet. By constructing heterojunctions, the light absorption range of the photocatalyst was extended, inhibiting the recombination of photogenerated electron-hole pairs and greatly enhancing its light quantum efficiency.
Article
Environmental Sciences
Zannatul Mumtarin Moushumy, Mohammad Jobaer Hassan, Mohebul Ahsan, Md Mahmudul Hasan, Md Nizam Uddin, Yuki Nagao, Mohammad A. Hasnat
Summary: A series of Ce, Bi, and N co-doped TiO2 photocatalysts were prepared to remove Chlorazol yellow (CY) dye molecules from water. The 5 wt% (Ce-Bi-N) co-doped TiO2 composite catalyst showed the best catalytic activity under sunlight irradiation. The catalyst achieved 97% degradation of CY molecules within 30 minutes and followed second-order kinetics. The developed catalyst can destruct CY molecules with a maximum rate of 23.1 mu g CY g(-1) min(-1) and the photodegradation kinetics depends on the concentration of CY.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Chemistry, Physical
Qingwang Liu, Mai Xu, Ying Meng, Shikun Chen, Shiliu Yang
Summary: The Ag3PO4/CoFe1.95Y0.05O4 nanocomposite with magnetic properties was synthesized using the hydrothermal method. The structure and morphology of the material were characterized, and its photocatalytic activity for degradation of dyes was tested. The nanocomposite exhibited smaller size and higher efficiency in degrading dyes than individually synthesized Ag3PO4 and had magnetic separation capabilities. Ag3PO4/CoFe1.95Y0.05O4-0.2 showed the highest activity and stability in degrading dyes, with 98% reduction achieved within 30 min.
Article
Materials Science, Ceramics
Hatice Ilhan, Gamze Belkis Durmaz Cayci, Erkan Aksoy, Halide Diker, Canan Varlikli
Summary: Graphene oxide (GO), amine-modified graphene oxide (mGO), and N-TiO2 composites were prepared by low-temperature hydrothermal method for photocatalytic degradation of Rhodamine B. The non-sensitized films showed significant enhancement in photocatalytic activity under direct sunlight, while PTE-sensitized catalyst films exhibited more than two folds of increase in rate constants under Xe lamp irradiation.
INTERNATIONAL JOURNAL OF APPLIED CERAMIC TECHNOLOGY
(2022)
Article
Nanoscience & Nanotechnology
In Seon Hwang, Velu Manikandan, Ruturaj P. Patil, Mahadeo A. Mahadik, Weon-Sik Chae, Hee-Suk Chung, Sun Hee Choi, Jum Suk Jang
Summary: In this study, a multifunctional photocatalyst was synthesized by loading metal oxides (Co/Pd) on acid-treated TiO2 nanorods (ATO) and subjecting them to hydrogen annealing treatment. The treatment converted the metal oxides into a bimetallic form, delayed charge recombination, and introduced oxygen vacancies. The hydrogen-treated photocatalyst (Pd(1)Co(1)/ATO (red)) exhibited high degradation efficiencies for orange II dye and BPA degradation, as well as antibacterial activity, under sunlight irradiation.
ACS APPLIED NANO MATERIALS
(2023)
Article
Environmental Sciences
Karen Yuanting Tang, James Xiaoyuan Chen, Enrico Daniel R. Legaspi, Cally Owh, Ming Lin, Ice Si Yin Tee, Dan Kai, Xian Jun Loh, Zibiao Li, Michelle D. Regulacio, Enyi Ye
Summary: The Au-embedded TiO2 nanofibers showed superior photocatalytic degradation efficiency for organic dye pollutants, attributed to the plasmon resonance absorption of Au nanoparticles and effective charge separation at the Au-TiO2 hybrid heterojunction.
Article
Environmental Sciences
Xiaojuan Chen, Jieming Chen, Ning Li, Jiesen Li, Juhua He, Song Xu, Yanping Zhu, Liang Yao, Yiqi Lai, Runliang Zhu
Summary: In this study, a novel Z-Scheme La2Ti2O7/Ag3PO4 heterostructure composite was constructed, which showed strong responsive to most of the spectra in natural sunlight. The composite exhibited efficient degradation of various organic pollutants and had good cycling stability due to the presence of Ag-0 as the recombination center of photogenerated carriers.
ENVIRONMENTAL POLLUTION
(2023)
Article
Environmental Sciences
Harpreet Kaur, Sanjeev Kumar, Sandeep Kaushal, Rahul Badru, Prit Pal Singh, Arivalagan Pugazhendhi
Summary: The present study successfully synthesized highly porous TiO2 by incorporating PANI polymer into the sol-gel chemistry of TiO2/TTIP. The TP samples exhibited a porous ginger-like nanostructure with smaller particle size compared to pristine TiO2. XPS analysis confirmed the presence of hydrogen bonds between Ti-OH groups of TiO2 and protonated nitrogen of PANI. UV-visible absorption study showed a small shift in absorption wavelength for TP8 sample and a reduction in Eg value. FTIR results confirmed the interaction between PANI and TiO2. The TP8 sample showed high photocatalytic activity towards Methylene blue dye degradation. The study offers an excellent photocatalyst TP8 with 8 wt% of PANI for the degradation of MB dye. Evaluation: 8 points
ENVIRONMENTAL RESEARCH
(2023)
Article
Multidisciplinary Sciences
G. Murugadoss, D. Dinesh Kumar, M. Rajesh Kumar, N. Venkatesh, P. Sakthivel
Summary: High quality silver (Ag) decorated CeO2 nanoparticles were prepared by a facile one-step chemical method and used as a catalyst for degrading harmful textile pollutant Rose Bengal dye under sunlight with a high efficiency of 96% degradation rate after 3 hours. The enhancement in degradation efficiency was mainly attributed to the decrease in band gap and charge carrier recombination rate, with a possible degradation mechanism proposed based on the generation of oxygen vacancies due to the decoration of Ag on the CeO2 surface.
SCIENTIFIC REPORTS
(2021)
Article
Engineering, Environmental
Rajaiah Alexpandi, Gurusamy Abirami, Murugesan Balaji, Rengarajan Jayakumar, Jeyaraj Godfred Ponraj, Yurong Cai, Shunmugiah Karutha Pandian, Arumugam Veera Ravi
Summary: With a growing consciousness of the importance of nature stewardship, researchers are focusing on utilizing renewable energy, specifically solar energy, for environmental concerns. They have prepared a sunlight-active phytol-assisted ZnO-TiO2 nanocomposite for photocatalytic bacterial deactivation and dye degradation. The results indicate that the photocatalytic process effectively deactivated bacteria and degraded the dye without any toxic effects, making it safe for the environment. Additionally, the nanocomposite showed promising results in preventing biofouling.
Article
Chemistry, Inorganic & Nuclear
H. Boulahbel, M. Benamira, F. Bouremmad, N. Ahmia, S. Kiamouche, H. Lahmar, A. Souici, M. Trari
Summary: This study investigates the degradation of Congo red dye using NiFe2O4 prepared by the sol gel auto-combustion method with glycine as the fuel under sunlight irradiation. A TiO2-NiFe2O4 Z-scheme was constructed to enhance the photoactivity by reducing the recombination of electron/hole pairs. The photocatalysts were characterized by various techniques and the results showed that the p-NiFe2O4/n-TiO2 heterostructure effectively facilitated the charge separation and improved the overall efficiency of the photocatalytic process.
INORGANIC CHEMISTRY COMMUNICATIONS
(2023)
Article
Environmental Sciences
Waqar Ahmad, Adnan Khan, Nisar Ali, Sana Khan, Salah Uddin, Sumeet Malik, Nauman Ali, Hamayun Khan, Hammad Khan, Muhammad Bilal
Summary: A novel bismuth-iron selenide catalyst was synthesized and showed high efficiency in degrading carcinogenic crystal violet dye under optimized conditions with solar irradiation. The catalyst demonstrated good reusability and followed pseudo-first-order kinetics.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Article
Optics
Salma Kouser, Abdo Hezam, K. Byrappa, Shaukath Ara Khanum
Summary: In this study, cerium oxide (CeO2) nanostructures were synthesized using a sunlight-assisted combustion method and characterized for their unique properties. CeO2-SA exhibited higher photocatalytic efficiency and distinctive physical and chemical properties compared to bulk CeO2.
Article
Engineering, Environmental
Xiaolan Zeng, Xiaozi Sun, Yan Wang
Summary: In this study, three N-doped TiO2 photocatalysts were synthesized for the degradation of Flumequine (FLU), with the TiO2/AN sample showing the highest photocatalytic performance under simulated sunlight irradiation, achieving a 100% removal efficiency of FLU after 4 hours. Photogenerated holes and hydroxyl radicals were identified as the main reactive species, with the detection of eight intermediates for FLU degradation. This research may have significant implications for further studies on the removal of fluoroquinolone antibiotics in wastewater.
ENVIRONMENTAL ENGINEERING RESEARCH
(2021)
Article
Environmental Sciences
Ashwini S. Varpe, Mrinalini D. Deshpande, Dipak R. Tope, Ashok V. Borhade
Summary: CdFe2O4/Al2O3 magnetic nanocomposite photocatalyst is synthesized by sol-gel auto-combustion method, and its role as a photocatalyst is studied. The influence of Al2O3 concentration on the photocatalytic property is investigated. The 10% composite sample shows superior properties compared to other concentrations and bare CdFe2O4 nanoparticles. The degradation rate of xylenol orange dye reaches 92.29% after 30 minutes of photocatalytic reaction.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Electrochemistry
T. S. Sunil Kumar Naik, B. E. Kumara Swamy, Simranjeet Singh, Joginder Singh, E. Indrajith Naik, G. K. Jayaprakash, Praveen C. Ramamurthy
Summary: A novel electrochemical sensor based on sodium alpha-olefin sulfonate was developed for real-time monitoring of adrenaline and paracetamol in aqueous solutions. The sensor showed selective and efficient detection of the target analytes with lower detection limits. Surface characterization and operational conditions were investigated to optimize the sensor performance.
JOURNAL OF APPLIED ELECTROCHEMISTRY
(2022)
Article
Polymer Science
Pritom J. Bora, Bibhusita Mahanta, Kishore, Praveen C. Ramamurthy
Summary: This work reveals the efficient microwave absorption characteristics of conducting polymer incorporated fly ash cenosphere, showing that optimizing the loading of conducting polymer and fly ash cenosphere in polymer can result in significant improvement in absorption performance. The data-driven methodology offers a proof of concept for obtaining broadband and robust microwave absorption characteristics of polymer-FAC composites.
JOURNAL OF APPLIED POLYMER SCIENCE
(2022)
Article
Microbiology
Amith G. Anil, Sukanya Ramachandran, Vineet Kumar, Sankaran Subramanian, Praveen C. Ramamurthy
Summary: Functionalized carbon dots (CDs) derived from Citrobacter freundii bacterial cells were used for selective detection of Cr(VI) with high stability. The synthesized CF-CDs exhibit a strong, specific interaction towards Cr(VI) due to their inherent functionalization. The dual linear response range of the fabricated sensor and its ability to distinguish between Cr(VI) and Cr(III) make it highly desirable for practical applications.
JOURNAL OF BASIC MICROBIOLOGY
(2022)
Article
Engineering, Electrical & Electronic
Sutripto Khasnabis, Meghana H. S. Jois, Pritom Jyoti Bora, Praveen C. Ramamurthy
Summary: This study investigates the potential of cowdung-derived activated carbon for microwave absorption, utilizing physical and chemical activation methods. Through various characterizations, the porous carbon structures were evaluated, showing promising microwave absorption properties under certain conditions.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2022)
Article
Electrochemistry
Israel Leka Lera, Sutripto Khasnabis, Lodrick Makokha Wangatia, Olu Emmanuel Femi, Praveen C. Ramamurthy
Summary: This study synthesized novel support materials PT/rGO and PEDOT:PSS/rGO to enhance the electrocatalytic performance of NiP, showing significant performance improvement, especially when NiP dispersed on the surface of PEDOT:PSS/rGO (PH4083). The NiP@PEDOT:PSS/rGO material exhibited high current density, low onset potential, and high stability, making it a promising anode electrocatalyst material for alkaline urea electrooxidation in direct urea fuel cell (DUFC).
JOURNAL OF SOLID STATE ELECTROCHEMISTRY
(2022)
Article
Materials Science, Multidisciplinary
T. S. Sunil Kumar Naik, Amith G. Anil, B. E. Kumara Swamy, Simranjeet Singh, V. Madhavi, S. M. Raghavendra, Praveen C. Ramamurthy
Summary: A novel electrochemical sensor based on BZPY was successfully fabricated and exhibited excellent catalytic behavior for the detection of BPA, with a low detection limit and good stability, selectivity, and reproducibility. The practical applicability of the sensor was tested using water samples, showing acceptable recovery rates.
MATERIALS CHEMISTRY AND PHYSICS
(2022)
Article
Energy & Fuels
Fiyanshu Kaka, Manjeet Keshav, Praveen C. Ramamurthy
Summary: Clean energy is crucial due to the carbon footprint caused by fossil fuels and the increasing global energy demand. Solar energy, particularly organic photovoltaics (OPVs), is an important focus. This study uses machine learning techniques to optimize the performance and morphology of OPVs, speeding up the optimization process.
Article
Energy & Fuels
Raju Nandi, Pravin S. Pawar, KrishnaRao Eswar Neerugatti, Jae Yu Cho, Seongheon Kim, Seong Ho Cho, Yun Seog Lee, Jaeyeong Heo
Summary: The study reports the highest cell efficiency and short-circuit current density for α-SnSe thin-film solar cells grown via vapor-transport-deposition. It shows that the grain size and surface roughness greatly influence the shunt properties of the device, with significantly large shunt losses detected in cases of both small and extremely large grains.
Review
Environmental Sciences
Simranjeet Singh, T. S. Sunil Kumar Naik, Amith G. Anil, Jaskaran Dhiman, Vijay Kumar, Daljeet Singh Dhanjal, Liliana Aguilar-Marcelino, Joginder Singh, Praveen C. Ramamurthy
Summary: This study aims to contribute towards understanding the behavior of nanoplastics in our environment, specifically through identification of various sources, detection techniques, toxicity estimation, health risk in humans, environmental fate, recovery and reuse, and future challenges and limitations. Detailed review on the toxic effects of nanoplastics on various organisms and their degradation rates in soil and water matrices are provided. The study also discusses the suitability of small- and large-scale separation techniques for the removal of nanoplastics in wastewater treatment plants, as well as current challenges and future perspectives in understanding the fate and transport of nanoplastics in the environment, including research gaps and the importance of reducing, reusing, and recycling plastic products.
Article
Chemistry, Physical
Pravin S. Pawar, Raju Nandi, KrishnaRao Eswar Neerugatti, Jae Yu Cho, Jaeyeong Heo
Summary: The study deposited Sb2S3 thin films on molybdenum using a hydrothermal approach and achieved higher power conversion efficiency through annealing to crystallize the films. The research also addressed the underlying reasons for the low efficiency of Sb2S3 TFSCs and provided a pathway for improving device performance in the future.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Physics, Applied
Arya Mohan, A. G. Anil, P. C. Ramamurthy, Reghu Menon
Summary: The charge transport in cross-linked c-PEDOT:PSS is compared with pristine PEDOT:PSS, and the cross-linking induces a metal-insulator transition in PEDOT:PSS, affecting the charge transport by modifying the nanomorphology.
JOURNAL OF APPLIED PHYSICS
(2022)
Article
Energy & Fuels
Rahul K. Yadav, Pravin S. Pawar, Raju Nandi, KrishnaRao Eswar Neerugatti, Yong Tae Kim, Jae Yu Cho, Jaeyeong Heo
Summary: The study optimized the parameters of tin selenide (SnSe) based solar cell devices through simulation, particularly by introducing a NiO back-surface field layer to improve efficiency, resulting in significant enhancement.
SOLAR ENERGY MATERIALS AND SOLAR CELLS
(2022)
Article
Energy & Fuels
Pravin S. Pawar, Raju Nandi, Krishna Rao Eswar Neerugatti, Indu Sharma, Rahul Kumar Yadav, Yong Tae Kim, Jae Yu Cho, Jaeyeong Heo
Summary: The application of double buffer layers can enhance the power conversion efficiency of antimony sulfide thin-film solar cells. In this study, SnO2 and TiO2 were applied as double buffer layers with CdS, leading to reduced surface roughness of ETLs and improved orientation of the Sb2S3 absorber. The use of double buffer layers also resulted in significant improvements in open-circuit voltage and PCE.
Article
Chemistry, Physical
Raju Nandi, Pravin S. Pawar, Rahul K. Yadav, KrishnaRao Eswar Neerugatti, Indu Sharma, Yong Tae Kim, Jaeyeong Heo
Summary: Binary tin chalcogenides (SnS and SnSe) are extensively studied in the field of thin-film solar cells (TFSCs). This study presents a one-step procedure for synthesizing mixed-phase SnSxSe1-x thin films and investigates their performance in TFSCs. The S-rich SnSxSe1-x devices demonstrate superior Voc, while the Se-rich devices exhibit superior Jsc. The optimized SnS0.70Se0.30 absorber layer achieves a highest efficiency of 3.75%, outperforming pure SnS or SnSe devices.
ACS APPLIED ENERGY MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Bidisha Nath, Sushant K. Behera, Jeykishan Kumar, Arnaud Hemmerle, Philippe Fontaine, Praveen C. Ramamurthy, Debiprosad Roy Mahapatra, Gopalkrishna Hegde
Summary: The surface passivation of oxide-based transport layers using octadecylphosphonic acid has been found to improve charge transport and recombination, resulting in enhanced performance of perovskite solar cells. This research contributes to the development of efficient halide perovskite solar cells by harnessing the favorable architecture of NiOx interfaces.
ADVANCED MATERIALS
(2023)