Utilization of Low-Cost Waste Tea-Derived CuO Nanoparticles for Enhanced Photocatalytic Decomposition of Rhodamine B Dye Under Visible Light Irradiation Rehana Baiju Mampilly, Amanullakhan Pathan, C. P. Bhasin Current Nanomaterials, 2025 Background: This study introduces an innovative and eco-friendly approach to synthesizing copper Nanoparticles (NPs) using waste tea, offering a cost-effective alternative. The synthesized waste tea-mediated Cu NPs (WT-CuO NPs) were verified through FTIR, XRD, FE-SEM, EDAX & HR-TEM analytical techniques. Methods: This research presents a novel and environmentally friendly method for producing copper Nanoparticles (NPs) by utilizing discarded tea, providing a cost-efficient alternative. The study involves the synthesis of CuO nanoparticles through the utilization of waste tea extract. Results: Optimal degradation outcomes were observed under visible light and sunlight exposure, at a pH of 8, utilizing 50 ppm Rhodamine B dye concentration and 50 mg of WT-CuO NPs, an impressive 98.90% effectiveness in breaking down the material was achieved in just 90 minutes of exposure to visible light. Furthermore, a notable 89.85% degradation efficiency was observed under sunlight exposure during the same time frame. Conclusion: The practical utility of WT-CuO nanoparticles was exhibited through their remarkable performance in degrading Rhodamine B dye (RhB). A significant 98.90% degradation efficiency was achieved within 90 minutes of exposure to visible light, while a substantial 89.85% degradation efficiency was achieved under sunlight exposure within the same time frame.
An Evaluation of Carbon Nanotube-based and Activated Carbon-based Nanocomposites for Fluoride and Other Pollutant Removal from Water: A Review Chandra Prakash Bhasin, Amanullakhan Pathan, Ruchita V. Patel Current Nanomaterials, 2024 Water is the most critical component of the earth's ecosystem because it is fundamental to the survival of plants and animals. However, our water supply is continuously polluting. Removing contaminants from water is a crucial part of addressing water scarcity and maintaining a healthy ecosystem for all. This review focuses on adsorption and the CNTs/AC family nano adsorbents and their contribution to the removal of fluoride and other contaminants. Many types of wastewater treatment methods have been employed, including precipitation, ion-exchange, adsorption, membrane filtration, etc. A water technology with great efficiency and low cost, without requiring costly infrastructure, is the most preferred option due to adsorption. Recently, the application of carbon family nanomaterials as adsorbents has been prevalent due to their phenomenal surface properties, simple customization, immense specific surface area, numerous variations in structural type, chemical stability, porosity, low density, ease of regeneration, and the ability to be reused. Hazardous contaminants, such as fluoride, generate major public health risks. Water contamination by heavy metals provides a significant health concern, including an increased chance of getting diseases like cancer, anaemia, carcinogenic effects, and acute effects in children. The increased presence of fluoride in water could cause fluorosis, joint pain, severe anaemia, and other problems. The following review focuses on current findings regarding the utilisation of CNTs and AC nanoparticles in the elimination of harmful contaminants and fluoride.
Iron Capped Spent Tea Leaves as Nano-Adsorbent for Removal of Eriochrome Black T from Aqueous Phase Rehana Baiju Mampilly, Amanullakhan Pathan, Chetan G. Prajapati, C.P. Bhasin Asian Journal of Chemistry, 2022 In present study, the removal of Eriochrome black T dye by iron nanoparticles prepared through tea leaves extract has been investigated. Synthesized iron capped nanoparticles were characterized by FTIR spectroscopy, X-ray diffraction (XRD), high-resolution transmission electron microscopy (HR-TEM) and field emission gun scanning electron microscopy (FEG-SEM) with EDAX. The X-ray diffraction patterns revealed that iron nanoparticles exhibited an amorphous nature. Scanning electron microscopy exhibited clearly spherical shape of iron nanoparticles. The transmission electron microscopy (HR-TEM) of iron nanoparticles shows the particle size in the range of 30-40 nm. Further, the degradation of Eriochrome black T dye was studied. To obtain the optimal conditions for the dye degradation, the effect of various experimental parameters, like the proportion of adsorbent, pH, the concentration of dye and contact time on the rate of reaction was studied. Adsorptions of Eriochrome black T dye follow pseudo-first-order kinetics. It was found that the dye degradation showed best results in the presence of sunlight at a pH of 3, Eriochrome black T dye concentration 50 ppm with 0.60 g of adsorbent. At 29 ± 1 ºC, the maximum removal of dye was achieved within 90 min.
Utilization of Low-Cost Waste Tea-Derived CuO Nanoparticles for Enhanced Photocatalytic Decomposition of Rhodamine B Dye Under Visible Light Irradiation RB Mampilly, A Pathan, CP Bhasin Current Nanomaterials 10 (4), 473-484 , 2025 2025 Citations: 1
Current and emerging frontiers in biologically synthesized gold nanoparticles: an in-depth review A Pathan, T Nayak, S Alshahrani, R Tripathi, P Tripathi Chemical Papers 79 (6), 3421-3442 , 2025 2025 Citations: 2
In-Silico Investigation of Cu (ll) Complex With 1,10-Phenanthroline and Thiosemicarbazone Using DFT And Molecular Docking Approaches SK Sohilkhan Chauhan, Chetan G Prajapati, Niral J Modi, Amanullakhan Pathan ... African Journal of Biomedical Research 27 (1S), 1265-1270 , 2024 2024
An evaluation of carbon nanotube-based and activated carbon-based nanocomposites for fluoride and other pollutant removal from water: a review CP Bhasin, A Pathan, RV Patel Current Nanomaterials 9 (1), 16-40 , 2024 2024 Citations: 13
Adsorption of eriochrome Black-T dye by batch investigations using waste tea@ Fe NPs as low-cost adsorbent RB Mampilly, SH Bhatt, NJ Modi, A Pathan Int. J. Thin Film Sci. Technol 13, 17-25 , 2024 2024 Citations: 8
Environmental remediation and application of carbon-based nanomaterials in the treatment of heavy metal-contaminated water: A review A Pathan, T Nayak Materials Today: Proceedings 92 (2), 1659-1670 , 2023 2023 Citations: 37
Adsorption and Photocatalytic Performance of Activated Carbon and Activated Carbon-La2O3 nanoparticles Composites for Malachite Green APCPB Shailesh Vajapara International Journal of Thin Film Science and Technology 12 (1), 21-37 , 2023 2023 Citations: 6
Visible Light-Assisted Degradation of Malachite Green dye using Waste Tea-Mediated Zinc Nanoparticles APCPB Rehana Baiju Mampilly International Journal of Thin Film Science and Technology 12 (1), 39-51 , 2023 2023 Citations: 15
Iron Capped Spent Tea Leaves as Nano-Adsorbent for Removal of Eriochrome Black T from Aqueous Phase CGPCPB REHANA BAIJU MAMPILLY, AMANULLAKHAN PATHAN ASIAN JOURNAL OF CHEMISTRY 34 (7), 1814-1820 , 2022 2022 Citations: 2
Effective and Feasible Photocatalytic Degradation of Janus Green B dye in Aqueous Media using PbS/CTAB Nanocomposites RPDCPB Amanullakhan Pathan* , Chetan G. Prajapati International Journal of Thin Films Science and Technology 11 (2), 245-255 , 2022 2022 Citations: 9
Solar Light Induced Photo Catalytic Properties of α-Fe2O3 Nanoparticles for Degradation of Methylene Blue Dye CPB Amanullakhan Pathan , Sandip H. Bhatt , Shailesh Vajapara International Journal of Thin Films Science and Technology 11 (2), 213-224 , 2022 2022 Citations: 11
Synthesis, Characterization and Biological Screening of Alkylene Dithiophosphate Derivatives of Macrocyclic Complexes of Pb (II) C G Prajapati, A Pathan, C P Bhasin JPRI , 2021 2021
Controlled Synthesis and Characterization of Lanthanum Nanorods A Pathan 2021
Biosynthesized Silver Nanoparticles Using an Aqueous Root Extract of Iris germanica as a Reducing Agent and Its Antibacterial Efficacy V Hiral, S Rahul, V Shailesh, P Amanullakhan European Journal of Medicinal Plants 21, 1-0 , 2020 2020 Citations: 3
Synthesis and Characterization of Biogenic Gold Nanoparticles Using Aegle marmelos Extracts: Antibacterial Assay HVAP Rahul Shah* Biosc.Biotech.Research Communication 13 (1), 307-312 , 2020 2020
International Journal of Thin Film Science and Technolog y MM Mohamed, NM Khalil, Y Algamal, QM Saleem, KA Aly Int. J. Thin. Fil. Sci. Tec 9 (2), 75-88 , 2020 2020
Controlled Synthesis and Characterization of Lanthanum Nanorods J Tejani, R Shah, H Vaghela, S Vajapara, A Pathan International Journal of Thin Film Science and Technology 9 (2), 119-125 , 2020 2020 Citations: 44
Synthesis of Zeolite and Zeolite Lanthanum Oxide Nanocomposites Adsorption and Photocatalytic Studies APHV Shailesh Vajapara ISSN:978-613-8 91388-7 (Scholar's Press International) , 2019 2019
BENTONITE LANTHANUM OXIDE NANOCOMPOSITES Synthesis, Characterization, and its Photocatalytic activity for Degradation of MG dye AP Shailesh Vajapara 978-613-9 46437-1 (LAP Lambert Academic Publishing International) , 2019 2019
Green synthesis and characterization of copper nanoparticles using mixture (Zingiber officinale, Piper nigrum and Piper longum) extract and its antimicrobial activity R Shah, A Pathan, H Vaghela, SC Ameta, K Parmar Chemical Science Transactions 8 (1), 63-69 , 2019 2019 Citations: 19
MOST CITED SCHOLAR PUBLICATIONS
Synthesis of La2O3 Nanoparticles using Glutaric acid and Propylene glycol for Future CMOS Applications KRDCPB Amanullakhan A. Pathan International Journal of Nanomaterials and Chemistry 3 (2), 21-25 , 2017 2017 Citations: 66
Controlled Synthesis and Characterization of Lanthanum Nanorods J Tejani, R Shah, H Vaghela, S Vajapara, A Pathan International Journal of Thin Film Science and Technology 9 (2), 119-125 , 2020 2020 Citations: 44
Palladium Nanoparticles Mediated Through Bauhinia variegata: Potent In vitro Anticancer Activity Against MCF-7 Cell Lines and Antimicrobial Assay AP Hiral Vaghela, Rahul Shah Current Nanomaterials 3 (3), 168-177 , 2018 2018 Citations: 41
Environmental remediation and application of carbon-based nanomaterials in the treatment of heavy metal-contaminated water: A review A Pathan, T Nayak Materials Today: Proceedings 92 (2), 1659-1670 , 2023 2023 Citations: 37
Conditional Optimization of Solution Combustion Synthesis for Pioneered La2O3 Nanostructures to Application as Future CMOS and NVMS Generations CPB Amanullakhan A. Pathan, Kavita R. Desai, Shailesh Vajapara Advances in Nanoparticles 7 (1), 28-35 , 2018 2018 Citations: 27
Synthesis, Characterization of Cadmium Sulphide nanoparticles and its Application as Photocatalytic degradation of Congored AAPCPB Kavita R.Desai International Journal of Nanomaterials and Chemistry 3 (2), 39-43 , 2017 2017 Citations: 26
Green synthesis and characterization of copper nanoparticles using mixture (Zingiber officinale, Piper nigrum and Piper longum) extract and its antimicrobial activity R Shah, A Pathan, H Vaghela, SC Ameta, K Parmar Chemical Science Transactions 8 (1), 63-69 , 2019 2019 Citations: 19
Visible Light-Assisted Degradation of Malachite Green dye using Waste Tea-Mediated Zinc Nanoparticles APCPB Rehana Baiju Mampilly International Journal of Thin Film Science and Technology 12 (1), 39-51 , 2023 2023 Citations: 15
An evaluation of carbon nanotube-based and activated carbon-based nanocomposites for fluoride and other pollutant removal from water: a review CP Bhasin, A Pathan, RV Patel Current Nanomaterials 9 (1), 16-40 , 2024 2024 Citations: 13
Improved Photocatalytic Properties of NiS Nanocomposites Prepared by Displacement Method for Removal of Rose Bengal Dye AA Pathan, KR Desai, CP Bhasin Current Nanomaterials 2 (3), 169-176 , 2017 2017 Citations: 12
Solar Light Induced Photo Catalytic Properties of α-Fe2O3 Nanoparticles for Degradation of Methylene Blue Dye CPB Amanullakhan Pathan , Sandip H. Bhatt , Shailesh Vajapara International Journal of Thin Films Science and Technology 11 (2), 213-224 , 2022 2022 Citations: 11
Effective and Feasible Photocatalytic Degradation of Janus Green B dye in Aqueous Media using PbS/CTAB Nanocomposites RPDCPB Amanullakhan Pathan* , Chetan G. Prajapati International Journal of Thin Films Science and Technology 11 (2), 245-255 , 2022 2022 Citations: 9
Adsorption of eriochrome Black-T dye by batch investigations using waste tea@ Fe NPs as low-cost adsorbent RB Mampilly, SH Bhatt, NJ Modi, A Pathan Int. J. Thin Film Sci. Technol 13, 17-25 , 2024 2024 Citations: 8
Adsorption and Photocatalytic Performance of Activated Carbon and Activated Carbon-La2O3 nanoparticles Composites for Malachite Green APCPB Shailesh Vajapara International Journal of Thin Film Science and Technology 12 (1), 21-37 , 2023 2023 Citations: 6
The biogenic synthesis of Au, Pd and Pt nanoparticles and its medicinal applications: a review AA Pathan, RH Shah, HM Vaghela Cambridge Scholars Publishing , 2018 2018 Citations: 6
The biogenic synthesis of Au HM Vaghela, AA Pathan, RH Shah Pd and Pt nanoparticles and its medicinal applications: A review , 2018 2018 Citations: 5
Biosynthesized Silver Nanoparticles Using an Aqueous Root Extract of Iris germanica as a Reducing Agent and Its Antibacterial Efficacy V Hiral, S Rahul, V Shailesh, P Amanullakhan European Journal of Medicinal Plants 21, 1-0 , 2020 2020 Citations: 3
Current and emerging frontiers in biologically synthesized gold nanoparticles: an in-depth review A Pathan, T Nayak, S Alshahrani, R Tripathi, P Tripathi Chemical Papers 79 (6), 3421-3442 , 2025 2025 Citations: 2
Iron Capped Spent Tea Leaves as Nano-Adsorbent for Removal of Eriochrome Black T from Aqueous Phase CGPCPB REHANA BAIJU MAMPILLY, AMANULLAKHAN PATHAN ASIAN JOURNAL OF CHEMISTRY 34 (7), 1814-1820 , 2022 2022 Citations: 2
