Article
Materials Science, Ceramics
Paula Derksen Macruz, Ramiro Picoli Nippes, Luiz Mario de Matos Jorge, Onelia Aparecida Andreo dos Santos
Summary: In this study, a ZnO-based photocatalyst was successfully synthesized using an alternative sol-gel route, which showed good performance in removing persistent pollutants in aqueous media, and demonstrated potential as a sustainable and low-cost photocatalyst.
JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY
(2022)
Article
Environmental Sciences
Hanan H. Mohamed, Dina H. A. Besisa
Summary: In this work, Ti-doped Fe2O3 with a hollow ellipsoidal capsules nanostructure was prepared using plant extract. The nanomaterial exhibited enhanced photocatalytic activity for the degradation of dyes and herbicides.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Review
Environmental Sciences
Anbalagan Saravanan, Yaashikaa Ponnambalam Ragini, Ponnusamy Senthil Kumar, Packiyam Thamarai, Gayathri Rangasamy
Summary: The persistence of organic/inorganic pollutants in water, particularly dyes and heavy metals, is a global ecological problem. Magnetic nanohybrids have shown promise in adsorbing and degrading these toxic pollutants, playing a significant role in water pollution remediation.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Engineering, Environmental
Feng Zhang, Hua Yang, Xiangbing Sun, Yaping Zhang, Hong Li, Yufeng He, Rongmin Wang
Summary: In this study, eco-friendly copolymers were successfully grafted onto the surface of loess particles using KH-570 as a modifier and NVP, MA, VAc, and AA as functional monomers. The resulting copolymer grafted loess particles exhibited rapid adsorption of pollutants, with removal rates of 85.22% for methylene blue and 86.01% for Cu2+. They also showed potential for comprehensive application in the removal of organic dyes and heavy metal ions, indicating their significance in wastewater treatment.
JOURNAL OF POLYMERS AND THE ENVIRONMENT
(2023)
Review
Chemistry, Multidisciplinary
Zhuojian Li, Ali Imran Channa, Zhiming M. Wang, Xin Tong
Summary: A photoelectrochemical (PEC) cell using semiconductor photoelectrode shows great potential in converting solar energy into hydrogen. However, the use of heavy metal quantum dots (QDs) in current PEC systems poses risks to human health and the environment. This review discusses recent advances in solar-driven PEC devices based on environmentally friendly QDs, and suggests future research directions to tackle the challenges related to synthesis, charge kinetics, and operational stability/efficiency of advanced eco-friendly QDs-PEC systems.
Article
Chemistry, Multidisciplinary
Philipp Marlow, Felix Manger, Karen Fischer, Christian Sprau, Alexander Colsmann
Summary: This research elucidates the mechanism behind the formation of stable P3HT dispersions, revealing that electrostatic effects play a dominant role in nanoparticle growth and dispersion stability. The study also shows that additional charges can be generated by light to enhance the electrostatic dispersion stability. This research provides a new approach for the fabrication of organic solar cells and optoelectronic thin-film devices.
Article
Chemistry, Multidisciplinary
Hadeel G. El-Shorbagy, Salah M. El-Kousy, Khalid Z. Elwakeel, M. A. Abd El-Ghaffar
Summary: A simple and economical method for modifying chitosan based on non-catalytic direct condensation reaction with phenolic acids has been developed, producing new resins with efficient silver ions adsorption capabilities. The newly developed resins showed excellent removal of toxic silver ions from aqueous medium and demonstrated good re-use ability.
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
(2021)
Article
Engineering, Electrical & Electronic
Afaf Salah Wahba, Ghada Yassin Abdel-Latif, Shamia El-Sherbiny, Nihal F. F. Areed, Mohamed Farhat O. Hameed, S. S. A. Obayya
Summary: This article proposes and analyzes a novel design of tin perovskite solar cell with moth-eye nanostructures for improved light absorption and energy harvesting. By studying the geometrical parameters and position of the nanostructures, it is found that the suggested design shows significantly enhanced light trapping compared to conventional planar structures. This efficient replacement to lead-perovskite offers excellent photovoltaic properties, low fabrication cost, suitable band gap, eco-friendliness, and great performance in converting sunlight to electrical energy.
OPTICAL AND QUANTUM ELECTRONICS
(2023)
Article
Environmental Sciences
Ravindranadh Koutavarapu, Ch Venkata Reddy, Kamaluddin Syed, Kakarla Raghava Reddy, Nagaraj P. Shetti, Tejraj M. Aminabhavi, Jaesool Shim
Summary: Heterostructured nanohybrids of NaBiS2 and ZnO were prepared for tetracycline degradation and photoelectrochemical water oxidation. By tuning the band gap, efficient degradation of tetracycline within 90 minutes and exceptional performance in PEC were achieved. Detailed photocatalytic mechanisms were discussed in the study.
Article
Engineering, Environmental
Palagiri Bhavani, D. Praveen Kumar, Murid Hussain, Tejraj M. Aminabhavi, Young-Kwon Park
Summary: Eco-friendly, low-cost, and highly efficient noble metal-free rice husk biomass-derived biochar was developed as a cocatalyst to improve the performance of zinc indium sulfide for photocatalytic H2 production. The optimized nanocomposite exhibited superior H2 production compared to pristine zinc indium sulfide under simulated light irradiation. The enhanced activity was attributed to efficient interfacial contacts between the materials, high surface area and conductivity of biochar, and ultrathin-layered structure of the nanosheets.
CHEMICAL ENGINEERING JOURNAL
(2022)
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
Energy & Fuels
Ziqiang Sun, Hongchao Yang, Zhiwei Ma, Ziyan Zhang, Liangri Han, Zhixuan Wang, Yejun Zhang, Xingyu Wang, Qiangbin Wang
Summary: In this study, silver-gold-selenide quantum dots (AgAuSe QDs) with well-treated defect states were used to construct environment-friendly QD solar cells. The energy-level alignment of the device was modulated by introducing a layer of Au nanoparticles (NPs), which significantly improved the device performance.
Article
Nanoscience & Nanotechnology
Kazi Hasibur Rahman, Asit Kumar Kar, Kuan-Chung Chen, Ching-Jung Chen
Summary: This study focuses on the synthesis of Fe3+ doped TiO2 nanoparticles with different molar concentrations of Fe3+ and their potential use as photocatalysts. The photocatalysts were thoroughly characterized using various analytical techniques to determine their morphological, chemical, structural, and optical properties. The presence of Fe3+ ions resulted in a red shift phenomenon, indicating the transfer of charges between the dopant and TiO2. Experimental results showed that Fe3+ ions regulate the catalytic property of TiO2 nanomaterials, and achieved high degradation efficiency rates for Methylene Blue and Malachite Green Oxalate under visible light irradiation.
Article
Engineering, Environmental
Ravindranadh Koutavarapu, Ch Venkata Reddy, Kamaluddin Syed, Kakarla Raghava Reddy, Tawfik A. Saleh, Dong-Yeon Lee, Jaesool Shim, Tejraj M. Aminabhavi
Summary: A NiFe2O4-ZnWO4 nanocomposite was synthesized using a simple hydrothermal method, showing enhanced photocatalytic performance and water splitting capability. The nanocomposite has great potential for various applications due to its outstanding properties.
JOURNAL OF HAZARDOUS MATERIALS
(2022)
Article
Nanoscience & Nanotechnology
Ahmed Chnani, Steffen Strehle
Summary: Hematite, a low-cost, nontoxic, and earth-abundant semiconductor, is still a promising photoanode material for PEC water splitting, but its PEC performance is hindered by fast charge carrier recombination rates and short diffusion lengths. Nanostructure implementation has been proposed to overcome this limitation and improve photon harvesting efficiency, but unmodified nanostructures may actually decrease the performance of PEC electrodes due to lack of internal electrical splitting fields.
ACS APPLIED NANO MATERIALS
(2022)
