Pub Date : 2022-12-13DOI: 10.1080/14328917.2022.2157984
Vandana Singh, Pranjali Pranjali, R. Raj, A. Guleria, Sachin Yadav, V. Kumar R, Dinesh Kumar
ABSTRACT Bacterial infections in the abdominal area are a primary cause of complications in patients with renal failure who are on peritoneal dialysis (PD). To combat such infections, Zinc Oxide (ZnO) Nanoparticles (NPs) are gaining popularity because of their well-known antibacterial characteristics. However, due to their quick accumulation and generation of bio-conjugates upon interaction with the components of PD Fluid, surface modification is required. In this context, the current study’s aim was to coat the ZnO-NPs with Silk Fibroin (SF) protein and assess their stability in PD fluid. UV-vis spectroscopy, Proton Nuclear Magnetic Resonance (1 H NMR) spectroscopy, Scanning electron microscopy (SEM) and Dynamic Light Scattering (DLS) characterisations, all validated the stability of SF-coated ZnO-NPs in PD fluid. Furthermore, SF-coated ZnO-NPs were tested as an antibacterial agent against Staphylococcus aureus, and our findings demonstrated that SF-coated ZnO-NPs significantly suppressed S. aureus activity.
{"title":"Improved antimicrobial activity of Zinc-Oxide Nanoparticles in peritoneal dialysis fluid using Silk Fibroin Protein coating","authors":"Vandana Singh, Pranjali Pranjali, R. Raj, A. Guleria, Sachin Yadav, V. Kumar R, Dinesh Kumar","doi":"10.1080/14328917.2022.2157984","DOIUrl":"https://doi.org/10.1080/14328917.2022.2157984","url":null,"abstract":"ABSTRACT Bacterial infections in the abdominal area are a primary cause of complications in patients with renal failure who are on peritoneal dialysis (PD). To combat such infections, Zinc Oxide (ZnO) Nanoparticles (NPs) are gaining popularity because of their well-known antibacterial characteristics. However, due to their quick accumulation and generation of bio-conjugates upon interaction with the components of PD Fluid, surface modification is required. In this context, the current study’s aim was to coat the ZnO-NPs with Silk Fibroin (SF) protein and assess their stability in PD fluid. UV-vis spectroscopy, Proton Nuclear Magnetic Resonance (1 H NMR) spectroscopy, Scanning electron microscopy (SEM) and Dynamic Light Scattering (DLS) characterisations, all validated the stability of SF-coated ZnO-NPs in PD fluid. Furthermore, SF-coated ZnO-NPs were tested as an antibacterial agent against Staphylococcus aureus, and our findings demonstrated that SF-coated ZnO-NPs significantly suppressed S. aureus activity.","PeriodicalId":18235,"journal":{"name":"Materials Research Innovations","volume":"87 1","pages":"310 - 317"},"PeriodicalIF":0.0,"publicationDate":"2022-12-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89092156","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-11-17DOI: 10.1080/14328917.2022.2148077
Elvin Y. Malikov
ABSTRACT The additive for concrete strengthening purposes based on the multiwalled carbon nanotubes was sonochemically synthesised under mild conditions through a radical polymerisation route by the reaction of oxidised nanotubes with maleic anhydride and α-nonene monomers. The Catalytic Chemical Vapour Deposition over the Fe-Co/Al2O3 catalyst was the method for the synthesis of the nanotubes used as the main reinforcement part. The resulting nanocomposite was characterised using Transmission electron microscopy, Scanning electron microscopy, Fourier-transform infrared spectroscopy, X-ray diffraction, and Raman spectroscopy techniques. The results from the above-mentioned methods revealed the success of the synthesis process. The mechanical testing showed that the obtained nanostructure is suitable additive material for concrete strengthening purposes with about 52.2% strengthening potential.
{"title":"Sonochemically synthesized MWCNT-maleic anhydride-nonene-1 additive material with concrete strengthening potential","authors":"Elvin Y. Malikov","doi":"10.1080/14328917.2022.2148077","DOIUrl":"https://doi.org/10.1080/14328917.2022.2148077","url":null,"abstract":"ABSTRACT The additive for concrete strengthening purposes based on the multiwalled carbon nanotubes was sonochemically synthesised under mild conditions through a radical polymerisation route by the reaction of oxidised nanotubes with maleic anhydride and α-nonene monomers. The Catalytic Chemical Vapour Deposition over the Fe-Co/Al2O3 catalyst was the method for the synthesis of the nanotubes used as the main reinforcement part. The resulting nanocomposite was characterised using Transmission electron microscopy, Scanning electron microscopy, Fourier-transform infrared spectroscopy, X-ray diffraction, and Raman spectroscopy techniques. The results from the above-mentioned methods revealed the success of the synthesis process. The mechanical testing showed that the obtained nanostructure is suitable additive material for concrete strengthening purposes with about 52.2% strengthening potential.","PeriodicalId":18235,"journal":{"name":"Materials Research Innovations","volume":"31 1","pages":"304 - 309"},"PeriodicalIF":0.0,"publicationDate":"2022-11-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85652374","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-11-01DOI: 10.1080/14328917.2022.2141953
Nutthapong Moonkum, C. Pilapong, Krai Daowtak, Gunjanaporn Tochaikul
ABSTRACT In radiology, radiation shielding is important for protection especially with diagnostic radiation, such as diagnostic X-ray, because radiation exposure can damage cellular DNA. Currently, lead is the most common radiation shielding but it poses environmental hazards due to its toxicity. This research aims to study a non-lead radiation shielding and to evaluate its effectiveness of radiation protection. We studied radiation absorption properties from primary and secondary radiations from shielding composed of silicone rubber and BaSO4 and Bi2O3 in different proportions. The results showed that the shielding material at 70% BaSO4 and Bi2O3 has the ability to reduce radiation doses from 120 kVp X-rays and has absorption properties of 90.19, 94.87% in primary and 92.72, 97.48% in secondary radiation. In addition, the silicone rubber shielding materials mixed with BaSO4 and Bi2O3 are environment-friendly, flexible and have great shielding performance in reducing diagnostic X-ray exposure.
{"title":"Evaluation of silicone rubber shielding material composites enriched with BaSO4 and Bi2O3 particles for radiation shielding properties","authors":"Nutthapong Moonkum, C. Pilapong, Krai Daowtak, Gunjanaporn Tochaikul","doi":"10.1080/14328917.2022.2141953","DOIUrl":"https://doi.org/10.1080/14328917.2022.2141953","url":null,"abstract":"ABSTRACT In radiology, radiation shielding is important for protection especially with diagnostic radiation, such as diagnostic X-ray, because radiation exposure can damage cellular DNA. Currently, lead is the most common radiation shielding but it poses environmental hazards due to its toxicity. This research aims to study a non-lead radiation shielding and to evaluate its effectiveness of radiation protection. We studied radiation absorption properties from primary and secondary radiations from shielding composed of silicone rubber and BaSO4 and Bi2O3 in different proportions. The results showed that the shielding material at 70% BaSO4 and Bi2O3 has the ability to reduce radiation doses from 120 kVp X-rays and has absorption properties of 90.19, 94.87% in primary and 92.72, 97.48% in secondary radiation. In addition, the silicone rubber shielding materials mixed with BaSO4 and Bi2O3 are environment-friendly, flexible and have great shielding performance in reducing diagnostic X-ray exposure.","PeriodicalId":18235,"journal":{"name":"Materials Research Innovations","volume":"12 1","pages":"296 - 303"},"PeriodicalIF":0.0,"publicationDate":"2022-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85103404","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
ABSTRACT Lanthanide-doped upconversion nanoparticles (UCNPs)have potential applications in optical and optoelectronic devices due to their novel optical properties. The surface plasmon is an effective method in improving the upconversion luminescence (UCL) properties, and it is essential to tunee the distance between the metal NPs and UCNPs for improving UCL. In this work, the Ag/TiO2/NaGdF4:Er3+/Yb3+/Al3+ composite films were fabricated, and the effect of the TiO2 layer thickness on spectral characteristics in the composite films was investigated. It is shown that the thickness of TiO2 film has a significant effect on the Ag NPs plasma resonance and fluorescence intensity. The maximum upconversion emission enhancement factors of the red and green emission were obtained for the sample with 15-nm-thickness TiO2 under the 980 nm excitation. That is mainly originated from the enhancement of the resonate energy transfer (Yb3+→Er3+) rate under the competition between non-radiative transition and local field effects.
{"title":"Influence of TiO2 Space layer on plasmon enhanced Luminescence of Ag/TiO2/NaGdF4:Er3+/Yb3+/Al3+ composite Films","authors":"Piaopiao Zheng, Mingjie Chen, Haifang Zhou, Chunxia Wang, Y. Lai, Jinling Yu, Shuying Cheng","doi":"10.1080/14328917.2022.2141951","DOIUrl":"https://doi.org/10.1080/14328917.2022.2141951","url":null,"abstract":"ABSTRACT Lanthanide-doped upconversion nanoparticles (UCNPs)have potential applications in optical and optoelectronic devices due to their novel optical properties. The surface plasmon is an effective method in improving the upconversion luminescence (UCL) properties, and it is essential to tunee the distance between the metal NPs and UCNPs for improving UCL. In this work, the Ag/TiO2/NaGdF4:Er3+/Yb3+/Al3+ composite films were fabricated, and the effect of the TiO2 layer thickness on spectral characteristics in the composite films was investigated. It is shown that the thickness of TiO2 film has a significant effect on the Ag NPs plasma resonance and fluorescence intensity. The maximum upconversion emission enhancement factors of the red and green emission were obtained for the sample with 15-nm-thickness TiO2 under the 980 nm excitation. That is mainly originated from the enhancement of the resonate energy transfer (Yb3+→Er3+) rate under the competition between non-radiative transition and local field effects.","PeriodicalId":18235,"journal":{"name":"Materials Research Innovations","volume":"4 1","pages":"289 - 295"},"PeriodicalIF":0.0,"publicationDate":"2022-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90760995","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-10-31DOI: 10.1080/14328917.2022.2140784
M. C., R. Mulla, H. R, Sachith Nayak, Y. N, Suraj L, M. Selvaraj, Vishal Chaudhary, A. Khosla
ABSTRACT Thermoelectric (TE) technology is considered as one of the promising, eco-friendly, simple and sustainable technologies to generate electricity directly from waste heat and concentrated solar heat. The present TE generators/devices are operating with very low conversion efficiency . Therefore, understanding the electronic and thermal properties of TE materials plays a vital role in enhancing device efficiency. In addition, non-toxic and abundant materials are also important to implement TE technology for large-scale applications. In the past few decades, a lot of research has been done on finding various oxide-based thermoelectric materials. Among many oxide-based materials, oxychalcogenides have received a lot of attention due to their useful thermoelectric properties. This review provides insights into thermoelectrics of selected inorganic oxychalcogenides. A comprehensive discussion has also been made on recent advances in preparation methods and various approaches such as doping, alloying, co-doping techniques adopted for design and optimisation of the TE materials.
{"title":"Insights into structural features and thermoelectric properties of layered oxychalcogenides, BiCuOCh (Ch = S, Se, Te): promising green materials for energy conversion","authors":"M. C., R. Mulla, H. R, Sachith Nayak, Y. N, Suraj L, M. Selvaraj, Vishal Chaudhary, A. Khosla","doi":"10.1080/14328917.2022.2140784","DOIUrl":"https://doi.org/10.1080/14328917.2022.2140784","url":null,"abstract":"ABSTRACT Thermoelectric (TE) technology is considered as one of the promising, eco-friendly, simple and sustainable technologies to generate electricity directly from waste heat and concentrated solar heat. The present TE generators/devices are operating with very low conversion efficiency . Therefore, understanding the electronic and thermal properties of TE materials plays a vital role in enhancing device efficiency. In addition, non-toxic and abundant materials are also important to implement TE technology for large-scale applications. In the past few decades, a lot of research has been done on finding various oxide-based thermoelectric materials. Among many oxide-based materials, oxychalcogenides have received a lot of attention due to their useful thermoelectric properties. This review provides insights into thermoelectrics of selected inorganic oxychalcogenides. A comprehensive discussion has also been made on recent advances in preparation methods and various approaches such as doping, alloying, co-doping techniques adopted for design and optimisation of the TE materials.","PeriodicalId":18235,"journal":{"name":"Materials Research Innovations","volume":"18 1","pages":"267 - 280"},"PeriodicalIF":0.0,"publicationDate":"2022-10-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90422008","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Over the recent decades, unrelenting efforts are being devoted to the sustainable design and synthesis of transitional metal oxide-based photocatalysts with controlled morphology and structural complexity to enhance their catalytic properties. In this account, we have reported the bio-fuel-assisted hydrothermal synthesis of MoO3, MoO3:NiO, and MoO3:PdO/Pd as catalysts to remove azo pollutants from an aqueous solution. Methyl orange was selected as the model dye to represent organic pollutants. This work presents a facile method for improving the visible-light-driven catalytic activity of MoO3 by introducing NiO and PdO. When MoO3:NiO and MoO3:PdO/Pd were illuminated by solar light, emitted radiation originating from oxygen vacancies of NiO and PdO synergistically participated in catalytic reactions of MoO3 giving 98% and 95 % degradation of methyl orange, respectively, in 15 min. To confirm the supporting role of NiO and PdO in the catalysis of MoO3, catalytic experiments were carried out in dark ambient conditions, with only catalysts (without stimulants). Subsequently, the degradation efficiency of MoO3:PdO, and MoO3:NiO was increased to 73% and 84% respectively, from 62 % efficiency of MoO3 suggesting that NiO and PdO greatly increased the efficiency of MoO3 in dark conditions and nearly complete removal of methyl orange by photo-induced visible light degradation. Furthermore, the photocatalysts illustrated good reusability till four runs of experiments without loss in its degradation efficiency. Therefore, the overall catalytic results of the current study are highly proposing MoO3:PdO and MoO3:NiO as excellent photocatalysts for water remediation.
{"title":"Biomimetic Synthesis of Highly Reusable MoO3-based Catalysts for Fast Degradation of Dyes","authors":"Irum Shaheen, K. Ahmad","doi":"10.54738/mi.2022.21001","DOIUrl":"https://doi.org/10.54738/mi.2022.21001","url":null,"abstract":"Over the recent decades, unrelenting efforts are being devoted to the sustainable design and synthesis of transitional metal oxide-based photocatalysts with controlled morphology and structural complexity to enhance their catalytic properties. In this account, we have reported the bio-fuel-assisted hydrothermal synthesis of MoO3, MoO3:NiO, and MoO3:PdO/Pd as catalysts to remove azo pollutants from an aqueous solution. Methyl orange was selected as the model dye to represent organic pollutants. This work presents a facile method for improving the visible-light-driven catalytic activity of MoO3 by introducing NiO and PdO. When MoO3:NiO and MoO3:PdO/Pd were illuminated by solar light, emitted radiation originating from oxygen vacancies of NiO and PdO synergistically participated in catalytic reactions of MoO3 giving 98% and 95 % degradation of methyl orange, respectively, in 15 min. To confirm the supporting role of NiO and PdO in the catalysis of MoO3, catalytic experiments were carried out in dark ambient conditions, with only catalysts (without stimulants). Subsequently, the degradation efficiency of MoO3:PdO, and MoO3:NiO was increased to 73% and 84% respectively, from 62 % efficiency of MoO3 suggesting that NiO and PdO greatly increased the efficiency of MoO3 in dark conditions and nearly complete removal of methyl orange by photo-induced visible light degradation. Furthermore, the photocatalysts illustrated good reusability till four runs of experiments without loss in its degradation efficiency. Therefore, the overall catalytic results of the current study are highly proposing MoO3:PdO and MoO3:NiO as excellent photocatalysts for water remediation.","PeriodicalId":18235,"journal":{"name":"Materials Research Innovations","volume":"74 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77708535","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Ambreen Kalsoom, M. Mirza, Zoobia Shah, A. Majeed, S. Mubarik, Arooj Ali, A. Tariq, Tooba Arshad, Sawera Ramzan, Waseem Akhtar Qureshi
Recently, graphene quantum dots (GQDs), zero-dimensional flat nanomaterials with distinct optical, electrical, and optoelectric properties, have attracted significant attention, owing to their non-toxicity and physiological inertness. A variety of top-down and bottom-up methodologies have been exploited for the synthesis of these materials, including electrochemical oxidation, hydrothermal or solvothermal, microwave-assisted, controllable synthesis and carbonization from organic molecules or polymers. This review focuses on the synthesis and applications of GQDs in solar cells, supercapacitors, LEDs, and Li/Na ion batteries. Herein, we summarized in detail the synthesis methods for GQDs employed in energy storage applications with enhanced capacitance, power conversion, retention capability, and stability, achieved by adjusting many synthesis parameters, including annealing temperature, growth time, substrate concentration, and catalyst. The conclusion highlights the potential opportunities and challenges related to future research on GQDs.
{"title":"Recent Developments in Graphene Quantum Dots in Energy Related Applications: A Review","authors":"Ambreen Kalsoom, M. Mirza, Zoobia Shah, A. Majeed, S. Mubarik, Arooj Ali, A. Tariq, Tooba Arshad, Sawera Ramzan, Waseem Akhtar Qureshi","doi":"10.54738/mi.2022.21002","DOIUrl":"https://doi.org/10.54738/mi.2022.21002","url":null,"abstract":"Recently, graphene quantum dots (GQDs), zero-dimensional flat nanomaterials with distinct optical, electrical, and optoelectric properties, have attracted significant attention, owing to their non-toxicity and physiological inertness. A variety of top-down and bottom-up methodologies have been exploited for the synthesis of these materials, including electrochemical oxidation, hydrothermal or solvothermal, microwave-assisted, controllable synthesis and carbonization from organic molecules or polymers. This review focuses on the synthesis and applications of GQDs in solar cells, supercapacitors, LEDs, and Li/Na ion batteries. Herein, we summarized in detail the synthesis methods for GQDs employed in energy storage applications with enhanced capacitance, power conversion, retention capability, and stability, achieved by adjusting many synthesis parameters, including annealing temperature, growth time, substrate concentration, and catalyst. The conclusion highlights the potential opportunities and challenges related to future research on GQDs.","PeriodicalId":18235,"journal":{"name":"Materials Research Innovations","volume":"30 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80562630","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-10-03DOI: 10.1080/14328917.2022.2130399
J. Choubey, A. Bajpai
ABSTRACT In this study the iron oxide incorporated gelatin nanoparticles (IOIGNPS) were prepared following an emulsion crosslinking method employing genipin as a non-toxic crosslinking agent. The drug loaded nanoparticles were characterised by analytical techniques. Whereas the FTIR spectra confirmed the crosslinking of gelatin by genipin and encapsulation of the drug, the TEM analysis revealed the nanosize (up to 100 nm) of the nanoparticles. The magnetisation study suggested for the superparamagnetic nature of nanoparticles. It was found that the amount of released drug increases with increasing percent loading of 5-FU in the range 21.1% to 44.4%. The release profiles of drug were affected by various experimental factors such as the amount and type of gelatin in the feed mixture, pH of the release media, nature of the release medium, and strength of the applied magnetic field. The swelling results indicated that the extent of swelling regulated the extent of drug release.
{"title":"Strategies to Improve the Anticancer Action of 5-Fluorouracil By Using Magnetically Targeted Drug Delivery Systems","authors":"J. Choubey, A. Bajpai","doi":"10.1080/14328917.2022.2130399","DOIUrl":"https://doi.org/10.1080/14328917.2022.2130399","url":null,"abstract":"ABSTRACT In this study the iron oxide incorporated gelatin nanoparticles (IOIGNPS) were prepared following an emulsion crosslinking method employing genipin as a non-toxic crosslinking agent. The drug loaded nanoparticles were characterised by analytical techniques. Whereas the FTIR spectra confirmed the crosslinking of gelatin by genipin and encapsulation of the drug, the TEM analysis revealed the nanosize (up to 100 nm) of the nanoparticles. The magnetisation study suggested for the superparamagnetic nature of nanoparticles. It was found that the amount of released drug increases with increasing percent loading of 5-FU in the range 21.1% to 44.4%. The release profiles of drug were affected by various experimental factors such as the amount and type of gelatin in the feed mixture, pH of the release media, nature of the release medium, and strength of the applied magnetic field. The swelling results indicated that the extent of swelling regulated the extent of drug release.","PeriodicalId":18235,"journal":{"name":"Materials Research Innovations","volume":"1 1","pages":"253 - 259"},"PeriodicalIF":0.0,"publicationDate":"2022-10-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73097718","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
M. Basit, Sofia Javed, Saqib Ali, A. A. Qureshi, I. Gul, M. Akram
The energy and environmental application of materials can be improved dramatically by efficiently consuming a large section of the solar spectrum. Scientists are exploring the wide band gap metal oxides and their nanocomposites as heterogeneous photocatalysts for effective performance in solar wavelengths. Increased surface area, efficient photon absorption, and reduced recombination rate can be achieved by structural engineering and developing efficient nanocomposites. A thorough review of recent innovations in ZnO nanostructures/nanocomposites exclusively for photocatalytic dye degradation has been conducted. The review provides insight into the effects of ZnO nanostructure and recent advancements in ZnO nanocomposites to improve the photocatalytic activity of organic pollutants under different radiations. The review concludes that structural and material engineering can boost the photocatalytic performance of ZnO structures.
{"title":"Recent Innovations in Low Dimensional ZnO Nanostructures/Nanocomposites for Photocatalytic Degradation","authors":"M. Basit, Sofia Javed, Saqib Ali, A. A. Qureshi, I. Gul, M. Akram","doi":"10.54738/mi.2022.2901","DOIUrl":"https://doi.org/10.54738/mi.2022.2901","url":null,"abstract":"The energy and environmental application of materials can be improved dramatically by efficiently consuming a large section of the solar spectrum. Scientists are exploring the wide band gap metal oxides and their nanocomposites as heterogeneous photocatalysts for effective performance in solar wavelengths. Increased surface area, efficient photon absorption, and reduced recombination rate can be achieved by structural engineering and developing efficient nanocomposites. A thorough review of recent innovations in ZnO nanostructures/nanocomposites exclusively for photocatalytic dye degradation has been conducted. The review provides insight into the effects of ZnO nanostructure and recent advancements in ZnO nanocomposites to improve the photocatalytic activity of organic pollutants under different radiations. The review concludes that structural and material engineering can boost the photocatalytic performance of ZnO structures.","PeriodicalId":18235,"journal":{"name":"Materials Research Innovations","volume":"66 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-09-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90362763","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-09-22DOI: 10.1080/14328917.2022.2125694
Mary Sieugaing Tamwa, J. R. Njimou, B. B. Nguelo, C. Nanseu-Njiki, E. Vunain, B. Tripathy, E. Ngameni
ABSTRACT In this study, a facile protocol was used to convert non-valuable orange peels (OP) waste into a new sensing iron oxide orange-peel nanomaterial (FeOP). The presence of iron oxide nanoparticles in the modified OP was confirmed by physicochemical characterisations including Fourier-transform infrared spectroscopy, X-ray diffractometry, thermogravimetry, and scanning electron microscopy-energy dispersive X-ray. FeOP was used to modify a carbon paste electrode (CPE/FeOP) which displayed a significant increase in specific capacitance of 2939 F.g−1, two folds higher than that obtained with CPE at 10 m.s−1 in NaCl. The electroanalysis of Congo red (CR) in aqueous solutions using CPE/FeOP displayed detection limits of 2.8 × 10−7 mol.L−1 and 8.2 × 10−7 mol.L−1 respectively in deionised and spring waters, in the linear range of 5 to 55 µM. CPE/FeOP electrochemical sensor is therefore suitable for the determination of Congo red in wastewater.
{"title":"Electrochemical sensor based on green-synthesized iron oxide nanomaterial modified carbon paste electrode for Congo red electroanalysis and capacitance performance","authors":"Mary Sieugaing Tamwa, J. R. Njimou, B. B. Nguelo, C. Nanseu-Njiki, E. Vunain, B. Tripathy, E. Ngameni","doi":"10.1080/14328917.2022.2125694","DOIUrl":"https://doi.org/10.1080/14328917.2022.2125694","url":null,"abstract":"ABSTRACT In this study, a facile protocol was used to convert non-valuable orange peels (OP) waste into a new sensing iron oxide orange-peel nanomaterial (FeOP). The presence of iron oxide nanoparticles in the modified OP was confirmed by physicochemical characterisations including Fourier-transform infrared spectroscopy, X-ray diffractometry, thermogravimetry, and scanning electron microscopy-energy dispersive X-ray. FeOP was used to modify a carbon paste electrode (CPE/FeOP) which displayed a significant increase in specific capacitance of 2939 F.g−1, two folds higher than that obtained with CPE at 10 m.s−1 in NaCl. The electroanalysis of Congo red (CR) in aqueous solutions using CPE/FeOP displayed detection limits of 2.8 × 10−7 mol.L−1 and 8.2 × 10−7 mol.L−1 respectively in deionised and spring waters, in the linear range of 5 to 55 µM. CPE/FeOP electrochemical sensor is therefore suitable for the determination of Congo red in wastewater.","PeriodicalId":18235,"journal":{"name":"Materials Research Innovations","volume":"13 1","pages":"243 - 252"},"PeriodicalIF":0.0,"publicationDate":"2022-09-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91124309","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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