Abstract High-sulfur petroleum coke (PC) as solid waste has high treatment cost. Gasification technology can utilize PC and lignite for co-gasification. Organically combining the two is the key to expanding the adaptability of gasification raw materials. This work used thermal analysis technology to study the gasification reaction of PC and lignite systems in a CO2 atmosphere. The results show that the starting and end temperatures of the co-gasification of lignite/high-sulfur PC are lower than those of pure coke. The improved carbonization rate and gasification reaction index indicate that lignite improves the gasification performance. The gasification synergy factors are all greater than 1, indicating that the co-gasification process produces obvious synergism, and the synergism is more obvious in the gasification stage after 800°C. The lignite ash is gradually enriched on the surface of high-sulfur PC with the temperature increase, and the Ca and Fe elements have an obvious catalytic effect, but the catalytic effect has a saturation value. Ashes from lignite used as a multi-component gasification catalyst can increase the overall reactivity in the lignite/high-sulfur PC system, which can broaden the selection of gasification raw materials, and make efficient use of the resource characteristics of both.
{"title":"Synergism between lignite and high-sulfur petroleum coke in CO2 gasification","authors":"Lirui Mao, Tao Liu, Yanlin Zhao, Mingdong Zheng","doi":"10.1515/gps-2022-8143","DOIUrl":"https://doi.org/10.1515/gps-2022-8143","url":null,"abstract":"Abstract High-sulfur petroleum coke (PC) as solid waste has high treatment cost. Gasification technology can utilize PC and lignite for co-gasification. Organically combining the two is the key to expanding the adaptability of gasification raw materials. This work used thermal analysis technology to study the gasification reaction of PC and lignite systems in a CO2 atmosphere. The results show that the starting and end temperatures of the co-gasification of lignite/high-sulfur PC are lower than those of pure coke. The improved carbonization rate and gasification reaction index indicate that lignite improves the gasification performance. The gasification synergy factors are all greater than 1, indicating that the co-gasification process produces obvious synergism, and the synergism is more obvious in the gasification stage after 800°C. The lignite ash is gradually enriched on the surface of high-sulfur PC with the temperature increase, and the Ca and Fe elements have an obvious catalytic effect, but the catalytic effect has a saturation value. Ashes from lignite used as a multi-component gasification catalyst can increase the overall reactivity in the lignite/high-sulfur PC system, which can broaden the selection of gasification raw materials, and make efficient use of the resource characteristics of both.","PeriodicalId":12758,"journal":{"name":"Green Processing and Synthesis","volume":" ","pages":""},"PeriodicalIF":4.3,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45705006","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
M. Muñoz, Matthieu Greber, K. B. Tayeb, C. Lamonier, C. Cabello, G. Romanelli
Abstract Nickel salts of Keggin heteropolytungstates with the general formula Ni x A y W12−y O39or40 (A = Si/P) were synthesized and studied as bulk catalytic materials or supported ones by deposition on modified and functionalized clay minerals (pillared layered clay and porous clay heterostructure). Characterizations by Raman, 31P and 29Si-NMR, and ESEM-EDS techniques showed that pure and supported systems preserved the Ni/W ratio and the expected structural properties of heteropolyanions. These materials were evaluated as catalysts in the selective oxidation of sulfides to sulfoxides or sulfones, using aqueous hydrogen peroxide and mild reaction conditions. The bulk materials, with a higher content of Ni, displayed a remarkable catalytic behavior in the oxidation of diphenyl sulfide (Ni3PW11NiO40H, 90% conversion in 15 min at 75°C, 100% sulfone selectivity in 3 h). Supported catalysts, particularly the non-functionalized PCH (Ni2SW12O40/PCH), showed excellent activity, with also being selective in the oxidation of sulfide to sulfoxide (87% conversion, 88.9% sulfoxide selectivity). The reuse of these materials was studied in the optimum reaction conditions, resulting in similar activity and selectivity. Graphical abstract Selective oxidation reaction of DPS to DPSO2 with hydrogen peroxide as oxidant in presence of nickel salts of Keggin heteropolytungstates as catalysts
摘要通过在改性和功能化的粘土矿物（柱撑层状粘土和多孔粘土异质结构）上沉积，合成了通式为Ni x A y W12−y O39or40（A=Si/P）的Keggin杂多钨酸镍盐，并将其作为本体催化材料或负载材料进行了研究。拉曼光谱、31P和29Si NMR以及ESEM-EDS技术的表征表明，纯的和负载的体系保持了杂多酸的Ni/W比和预期的结构性质。这些材料被评价为使用过氧化氢水溶液和温和反应条件将硫化物选择性氧化为亚砜或砜的催化剂。镍含量较高的大块材料在氧化二苯硫醚（Ni3PW11NiO40H，15 75°C时最小，3分钟内100%砜选择性 h） 。负载型催化剂，特别是非官能化的PCH（Ni2SW12O40/PCH），表现出优异的活性，在硫化物氧化为亚砜方面也具有选择性（87%的转化率，88.9%的亚砜选择性）。在最佳反应条件下研究了这些材料的再利用，得到了相似的活性和选择性。在Keggin杂多酸镍盐催化下，过氧化氢作为氧化剂将DPS选择性氧化为DPSO2
{"title":"Catalysts based on nickel salt heteropolytungstates for selective oxidation of diphenyl sulfide","authors":"M. Muñoz, Matthieu Greber, K. B. Tayeb, C. Lamonier, C. Cabello, G. Romanelli","doi":"10.1515/gps-2023-0026","DOIUrl":"https://doi.org/10.1515/gps-2023-0026","url":null,"abstract":"Abstract Nickel salts of Keggin heteropolytungstates with the general formula Ni x A y W12−y O39or40 (A = Si/P) were synthesized and studied as bulk catalytic materials or supported ones by deposition on modified and functionalized clay minerals (pillared layered clay and porous clay heterostructure). Characterizations by Raman, 31P and 29Si-NMR, and ESEM-EDS techniques showed that pure and supported systems preserved the Ni/W ratio and the expected structural properties of heteropolyanions. These materials were evaluated as catalysts in the selective oxidation of sulfides to sulfoxides or sulfones, using aqueous hydrogen peroxide and mild reaction conditions. The bulk materials, with a higher content of Ni, displayed a remarkable catalytic behavior in the oxidation of diphenyl sulfide (Ni3PW11NiO40H, 90% conversion in 15 min at 75°C, 100% sulfone selectivity in 3 h). Supported catalysts, particularly the non-functionalized PCH (Ni2SW12O40/PCH), showed excellent activity, with also being selective in the oxidation of sulfide to sulfoxide (87% conversion, 88.9% sulfoxide selectivity). The reuse of these materials was studied in the optimum reaction conditions, resulting in similar activity and selectivity. Graphical abstract Selective oxidation reaction of DPS to DPSO2 with hydrogen peroxide as oxidant in presence of nickel salts of Keggin heteropolytungstates as catalysts","PeriodicalId":12758,"journal":{"name":"Green Processing and Synthesis","volume":" ","pages":""},"PeriodicalIF":4.3,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48602740","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
R. Raju, R. Raghunathan, N. Arumugam, A. Almansour, Raju Suresh Kumar, P. Vivekanand, C. Ebenezer, R. V. Solomon, Karthikeyan Perumal
Abstract An efficient and environmentally benign synthesis of a new class of acridinedione embedded spirooxindolo/acenaphthenothiopyrrolizidines and spirooxindolo/acenathenoindolizidines has been synthesized in good to excellent yields employing ionic liquid accelerated one-pot [3 + 2]-cycloaddition strategy. The pre-requisite starting substrates, O-acryloyl acridinediones were prepared from dimedone in three good yielding steps, while the 1,3-dipole was derived in situ from isatin/acenaphthenequinone and thiazolidine-4-carboxylc acid/l-pipecolinic acid via decarboxylative condensation. The cycloadduct possesses three stereogenic carbons, one of which is a spiro carbon through the formation of two C–C and one C–N bonds in one-pot synthetic transformation. Geometrical parameters of the synthesized compounds were calculated using the B3LYP/6-311g(d,p) level of theory. The activity of these molecules was evaluated against main protease of COVID-19 to screen them for their inhibitor efficiency. In order to get a broad understanding of the interactions of these synthesized ligands, a detailed molecular docking analysis was performed. Molecular docking analysis shows that compound 8b has the highest binding affinity toward the protein. The compound can be a potential candidate for the treatment of COVID-19.
{"title":"Environmentally friendly synthesis and computational studies of novel class of acridinedione integrated spirothiopyrrolizidines/indolizidines","authors":"R. Raju, R. Raghunathan, N. Arumugam, A. Almansour, Raju Suresh Kumar, P. Vivekanand, C. Ebenezer, R. V. Solomon, Karthikeyan Perumal","doi":"10.1515/gps-2023-0036","DOIUrl":"https://doi.org/10.1515/gps-2023-0036","url":null,"abstract":"Abstract An efficient and environmentally benign synthesis of a new class of acridinedione embedded spirooxindolo/acenaphthenothiopyrrolizidines and spirooxindolo/acenathenoindolizidines has been synthesized in good to excellent yields employing ionic liquid accelerated one-pot [3 + 2]-cycloaddition strategy. The pre-requisite starting substrates, O-acryloyl acridinediones were prepared from dimedone in three good yielding steps, while the 1,3-dipole was derived in situ from isatin/acenaphthenequinone and thiazolidine-4-carboxylc acid/l-pipecolinic acid via decarboxylative condensation. The cycloadduct possesses three stereogenic carbons, one of which is a spiro carbon through the formation of two C–C and one C–N bonds in one-pot synthetic transformation. Geometrical parameters of the synthesized compounds were calculated using the B3LYP/6-311g(d,p) level of theory. The activity of these molecules was evaluated against main protease of COVID-19 to screen them for their inhibitor efficiency. In order to get a broad understanding of the interactions of these synthesized ligands, a detailed molecular docking analysis was performed. Molecular docking analysis shows that compound 8b has the highest binding affinity toward the protein. The compound can be a potential candidate for the treatment of COVID-19.","PeriodicalId":12758,"journal":{"name":"Green Processing and Synthesis","volume":" ","pages":""},"PeriodicalIF":4.3,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43253887","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Nande Mgedle, O. Aladesuyi, T. C. Lebepe, Vuyelwa Ncapayi, O. Oluwafemi
Abstract Quaternary quantum dots (QDs) have recently gained more attention due to their low toxicity, tunable wavelength, reduced or no blueshift emission upon overcoating, improved photoluminescence (PL) quantum yield, and PL lifetime when compared to their binary (II–VI) and ternary (I–III–VI) counterparts. In this work, the aqueous synthesis of ZnCuInS/ZnS–ZnS multi-shell quaternary QDs as a nanosensor for the selective detection of Cu2+ ions was reported. The as-synthesized QDs were spherical, with a particle diameter of 3.66 ± 0.81 nm, and emitted in the first near-infrared window (725 nm) with an average decay PL lifetime of 43.69 ns. The X-ray diffraction analysis showed that the QDs were of the wurtzite structure, while the Fourier transform infrared spectroscopy confirmed GSH capping through the sulphur–metal bond. Furthermore, the fluorometric study shows that the developed multi-shell QDs were selective towards Cu2+ ions compared to other metal ions via fluorescence quenching with a limit of detection of 1.4 µM, which is below the acceptable limit in drinking water.
{"title":"Facile aqueous synthesis of ZnCuInS/ZnS–ZnS QDs with enhanced photoluminescence lifetime for selective detection of Cu(ii) ions","authors":"Nande Mgedle, O. Aladesuyi, T. C. Lebepe, Vuyelwa Ncapayi, O. Oluwafemi","doi":"10.1515/gps-2022-8155","DOIUrl":"https://doi.org/10.1515/gps-2022-8155","url":null,"abstract":"Abstract Quaternary quantum dots (QDs) have recently gained more attention due to their low toxicity, tunable wavelength, reduced or no blueshift emission upon overcoating, improved photoluminescence (PL) quantum yield, and PL lifetime when compared to their binary (II–VI) and ternary (I–III–VI) counterparts. In this work, the aqueous synthesis of ZnCuInS/ZnS–ZnS multi-shell quaternary QDs as a nanosensor for the selective detection of Cu2+ ions was reported. The as-synthesized QDs were spherical, with a particle diameter of 3.66 ± 0.81 nm, and emitted in the first near-infrared window (725 nm) with an average decay PL lifetime of 43.69 ns. The X-ray diffraction analysis showed that the QDs were of the wurtzite structure, while the Fourier transform infrared spectroscopy confirmed GSH capping through the sulphur–metal bond. Furthermore, the fluorometric study shows that the developed multi-shell QDs were selective towards Cu2+ ions compared to other metal ions via fluorescence quenching with a limit of detection of 1.4 µM, which is below the acceptable limit in drinking water.","PeriodicalId":12758,"journal":{"name":"Green Processing and Synthesis","volume":" ","pages":""},"PeriodicalIF":4.3,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47349888","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
M. Hadnadjev-Kostic, Djurdjica Karanovic, T. Vulić, J. Dostanić, D. Lončarević
Abstract ZnFe photocatalysts have been increasingly investigated for water remediation due to the high demands in this field, such as activity, toxicity, cost, and stability. The presented study was focused on the simple, safe, non-toxic, and eco-friendly synthesis and characterization of ZnFe-mixed metal oxides in correlation with their functional properties. Photocatalytic performance of these materials was evaluated by rhodamine B photodegradation under simulated solar light irradiation. The synthesized mixed oxides contained hexagonal wurtzite ZnO as the predominant phase, whereas, after thermal treatment, the formation of the spinel-structured ZnFe2O4 phase was observed. The photocatalysts with the additional spinel phase and thermally treated at 300°C and 500°C exhibited superior photocatalytic activity probably due to the highest amount of the ZnFe2O4 spinel phase, favourable mesoporous structure, and an optimal energy band gap of ∼2.30 eV that initiated higher light-harvesting efficiency. The rhodamine B photodegradation followed zero-order kinetics, indicating complete coverage of active sites by the pollutant substrate. Additionally, photocatalysts showed the highest efficiency at the natural pH (6.8), being in accordance with green synthesis principles. Simple, green route assembling synthesis method, high photodegradation efficiency, and good reusability make these ZnFe-mixed oxides great candidates for potential application in practical wastewater treatments.
{"title":"Photocatalytic properties of ZnFe-mixed oxides synthesized via a simple route for water remediation","authors":"M. Hadnadjev-Kostic, Djurdjica Karanovic, T. Vulić, J. Dostanić, D. Lončarević","doi":"10.1515/gps-2022-8153","DOIUrl":"https://doi.org/10.1515/gps-2022-8153","url":null,"abstract":"Abstract ZnFe photocatalysts have been increasingly investigated for water remediation due to the high demands in this field, such as activity, toxicity, cost, and stability. The presented study was focused on the simple, safe, non-toxic, and eco-friendly synthesis and characterization of ZnFe-mixed metal oxides in correlation with their functional properties. Photocatalytic performance of these materials was evaluated by rhodamine B photodegradation under simulated solar light irradiation. The synthesized mixed oxides contained hexagonal wurtzite ZnO as the predominant phase, whereas, after thermal treatment, the formation of the spinel-structured ZnFe2O4 phase was observed. The photocatalysts with the additional spinel phase and thermally treated at 300°C and 500°C exhibited superior photocatalytic activity probably due to the highest amount of the ZnFe2O4 spinel phase, favourable mesoporous structure, and an optimal energy band gap of ∼2.30 eV that initiated higher light-harvesting efficiency. The rhodamine B photodegradation followed zero-order kinetics, indicating complete coverage of active sites by the pollutant substrate. Additionally, photocatalysts showed the highest efficiency at the natural pH (6.8), being in accordance with green synthesis principles. Simple, green route assembling synthesis method, high photodegradation efficiency, and good reusability make these ZnFe-mixed oxides great candidates for potential application in practical wastewater treatments.","PeriodicalId":12758,"journal":{"name":"Green Processing and Synthesis","volume":"12 1","pages":""},"PeriodicalIF":4.3,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66810140","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Bindiya Barsola, Shivani Saklani, P. Kumari, A. K. Sidhu, Anjoo Dhar
Abstract The most fascinating product of honeybee is propolis. It has an immense role in dentistry, dermatology, and otorhinolaryngology. The increased popularity of propolis as an important remedy is due to its constituents, which have anti-inflammatory, immunomodulatory, antihepatotoxic, anti-cancerous, antifungal, antioxidant, antidiabetic, and antiviral activities. The diverse biological and pharmacological activities of propolis have piqued the interest of many scientists. Many techniques like gas chromatography-mass spectrometry, chromatography, and spectroscopy are being used to identify different propolis constituents. Flavonoids, phenolic acids, and their esters are the most pharmacologically active molecules of propolis and are known to disrupt the replication machinery of the virus corroborating the anti-coronavirus activity of propolis. The main aim of this article is to provide an insight of the increasing theragnostic uses of propolis and its nanoparticles, including their chemical analysis, diverse biological activities, and the necessity for chemical standardization. In this review, we have focused at the promising effects of propolis, its optimization, and its liposomal formulation as a therapeutic intervention for COVID-19 and its accompanying comorbidities. Graphical abstract
{"title":"Role and the importance of green approach in biosynthesis of nanopropolis and effectiveness of propolis in the treatment of COVID-19 pandemic","authors":"Bindiya Barsola, Shivani Saklani, P. Kumari, A. K. Sidhu, Anjoo Dhar","doi":"10.1515/gps-2022-8106","DOIUrl":"https://doi.org/10.1515/gps-2022-8106","url":null,"abstract":"Abstract The most fascinating product of honeybee is propolis. It has an immense role in dentistry, dermatology, and otorhinolaryngology. The increased popularity of propolis as an important remedy is due to its constituents, which have anti-inflammatory, immunomodulatory, antihepatotoxic, anti-cancerous, antifungal, antioxidant, antidiabetic, and antiviral activities. The diverse biological and pharmacological activities of propolis have piqued the interest of many scientists. Many techniques like gas chromatography-mass spectrometry, chromatography, and spectroscopy are being used to identify different propolis constituents. Flavonoids, phenolic acids, and their esters are the most pharmacologically active molecules of propolis and are known to disrupt the replication machinery of the virus corroborating the anti-coronavirus activity of propolis. The main aim of this article is to provide an insight of the increasing theragnostic uses of propolis and its nanoparticles, including their chemical analysis, diverse biological activities, and the necessity for chemical standardization. In this review, we have focused at the promising effects of propolis, its optimization, and its liposomal formulation as a therapeutic intervention for COVID-19 and its accompanying comorbidities. Graphical abstract","PeriodicalId":12758,"journal":{"name":"Green Processing and Synthesis","volume":" ","pages":""},"PeriodicalIF":4.3,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44952782","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Moorthy Muruganandham, K. Sivasubramanian, P. Velmurugan, N. Arumugam, A. Almansour, Raju Suresh Kumar, S. Mahalingam, S. Sivakumar
Abstract A feasible alternative to classic chemical synthesis, the phyto-mediated production of silver nanoparticles (AgNPs) utilizing aqueous flower petal extract of Cassia alata as a reducing agent is reported for the first time. Characterization of synthesized AgNPs was carried out using various techniques viz., ultraviolet-visible spectroscopy (UV-Vis), X-ray powder diffraction (XRD), high-resolution transmission electron microscope (HRTEM), Fourier transform infrared spectroscopy (FTIR), and scanning electron microscopy (SEM) with energy dispersive X-ray analysis (EDX). The results of the FTIR research conducted in this study show different bond stretches with varying durations, which can be seen at various faraway points. AgNPs are mainly spherical and vary in size from 20 to 100 nm, according to TEM images. The highest X-ray energy surge, at 3 keV, is visible in the EDX spectrum. The XRD pattern showed that four diffraction peaks could be assigned to the 111, 200, 220, and 311 planes of the face-centered cubic crystalline silver, respectively, at 32.05, 46.27, 55.25, and 57.39°. Optimization of production parameters including pH, metal ion concentration, and substrate concentrations were studied. In addition, the bioactivity was evaluated against Trichophyton rubrum, Aspergillus fumigatus, Candida albicans, Epidermophyton floccosum, and Mucor sp. using the agar diffusion method. Furthermore, their antioxidant properties were assessed using 2,2-diphenyl-1-picryl-hydrazyl-hydrate assay and ferric ion reducing antioxidant power tests. MTT assay was performed using human fibroblast cell line (L929) to determine the cell viability and cytotoxicity through increased metabolism of the tetrazolium salt.
{"title":"Phytocrystallization of silver nanoparticles using Cassia alata flower extract for effective control of fungal skin pathogens","authors":"Moorthy Muruganandham, K. Sivasubramanian, P. Velmurugan, N. Arumugam, A. Almansour, Raju Suresh Kumar, S. Mahalingam, S. Sivakumar","doi":"10.1515/gps-2023-0013","DOIUrl":"https://doi.org/10.1515/gps-2023-0013","url":null,"abstract":"Abstract A feasible alternative to classic chemical synthesis, the phyto-mediated production of silver nanoparticles (AgNPs) utilizing aqueous flower petal extract of Cassia alata as a reducing agent is reported for the first time. Characterization of synthesized AgNPs was carried out using various techniques viz., ultraviolet-visible spectroscopy (UV-Vis), X-ray powder diffraction (XRD), high-resolution transmission electron microscope (HRTEM), Fourier transform infrared spectroscopy (FTIR), and scanning electron microscopy (SEM) with energy dispersive X-ray analysis (EDX). The results of the FTIR research conducted in this study show different bond stretches with varying durations, which can be seen at various faraway points. AgNPs are mainly spherical and vary in size from 20 to 100 nm, according to TEM images. The highest X-ray energy surge, at 3 keV, is visible in the EDX spectrum. The XRD pattern showed that four diffraction peaks could be assigned to the 111, 200, 220, and 311 planes of the face-centered cubic crystalline silver, respectively, at 32.05, 46.27, 55.25, and 57.39°. Optimization of production parameters including pH, metal ion concentration, and substrate concentrations were studied. In addition, the bioactivity was evaluated against Trichophyton rubrum, Aspergillus fumigatus, Candida albicans, Epidermophyton floccosum, and Mucor sp. using the agar diffusion method. Furthermore, their antioxidant properties were assessed using 2,2-diphenyl-1-picryl-hydrazyl-hydrate assay and ferric ion reducing antioxidant power tests. MTT assay was performed using human fibroblast cell line (L929) to determine the cell viability and cytotoxicity through increased metabolism of the tetrazolium salt.","PeriodicalId":12758,"journal":{"name":"Green Processing and Synthesis","volume":" ","pages":""},"PeriodicalIF":4.3,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47453830","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Maryam Musleh Althobiti, Badr Alzahrani, Abozer Y. Elderdery, Nasser A. N. Alzerwi, Musaed Rayzah, Ahmed M. E. Elkhalifa, Bandar Idrees, Ebtisam Bakhsh, Abdulrahim A. Alabdulsalam, A. Mohamedain, Suresh S. Kumar, Pooi Ling Mok
Abstract In this study, we evaluated the antiproliferative and apoptotic properties of Pluronic-F127-containing manganese oxide nanoparticles (PF-127-coated Mn 2 O 3 NPs) derived from the leaf extract of Glycyrrhiza uralensis (GU) on breast adenocarcinoma, MCF7, and MDA-MB-231 cell lines. The leaf extract of GU contains bioactive molecules that act as a reducing or capping agent to form Mn 2 O 3 NPs. Various analytical techniques were used to characterize the physiochemical properties of PF-127-coated Mn 2 O 3 NPs, including spectroscopy (ultralight-Vis, Fourier transform infrared, photoluminescence), electron microscopy (field emission scanning electron microscopy and transmission electron microscopy), X-ray diffraction (XRD), electron diffracted X-ray spectroscopy (EDAX), and dynamic light scattering. The average crystallite size of Mn 2 O 3 NPs was estimated to be 80 nm, and the NPs had a cubic crystalline structure. PF127-encapsulated Mn 2 O 3 NPs significantly reduce MDA-MB-231 and MCF-7 cell proliferation, while increasing endogenous ROS and lowering mitochondrial matrix protein levels. DAPI, EtBr/AO dual staining, and Annexin-V-FITC-based flow cytometry analysis revealed that PF127-coated Mn 2 O 3 NP-treated breast cancer cells exhibit nuclear damage and apoptotic cell death, resulting in cell cycle arrest in the S phase. Furthermore, PF127-encapsulated Mn 2 O 3 NPs show strong antimicrobial efficacy against various strains. As a result, we can conclude that PF127-coated Mn 2 O 3 NPs may be effective as future anticancer agents and treatment options for breast cancer.
{"title":"<i>In vitro</i> anti-cancer and antimicrobial effects of manganese oxide nanoparticles synthesized using the <i>Glycyrrhiza uralensis</i> leaf extract on breast cancer cell lines","authors":"Maryam Musleh Althobiti, Badr Alzahrani, Abozer Y. Elderdery, Nasser A. N. Alzerwi, Musaed Rayzah, Ahmed M. E. Elkhalifa, Bandar Idrees, Ebtisam Bakhsh, Abdulrahim A. Alabdulsalam, A. Mohamedain, Suresh S. Kumar, Pooi Ling Mok","doi":"10.1515/gps-2023-0063","DOIUrl":"https://doi.org/10.1515/gps-2023-0063","url":null,"abstract":"Abstract In this study, we evaluated the antiproliferative and apoptotic properties of Pluronic-F127-containing manganese oxide nanoparticles (PF-127-coated Mn 2 O 3 NPs) derived from the leaf extract of Glycyrrhiza uralensis (GU) on breast adenocarcinoma, MCF7, and MDA-MB-231 cell lines. The leaf extract of GU contains bioactive molecules that act as a reducing or capping agent to form Mn 2 O 3 NPs. Various analytical techniques were used to characterize the physiochemical properties of PF-127-coated Mn 2 O 3 NPs, including spectroscopy (ultralight-Vis, Fourier transform infrared, photoluminescence), electron microscopy (field emission scanning electron microscopy and transmission electron microscopy), X-ray diffraction (XRD), electron diffracted X-ray spectroscopy (EDAX), and dynamic light scattering. The average crystallite size of Mn 2 O 3 NPs was estimated to be 80 nm, and the NPs had a cubic crystalline structure. PF127-encapsulated Mn 2 O 3 NPs significantly reduce MDA-MB-231 and MCF-7 cell proliferation, while increasing endogenous ROS and lowering mitochondrial matrix protein levels. DAPI, EtBr/AO dual staining, and Annexin-V-FITC-based flow cytometry analysis revealed that PF127-coated Mn 2 O 3 NP-treated breast cancer cells exhibit nuclear damage and apoptotic cell death, resulting in cell cycle arrest in the S phase. Furthermore, PF127-encapsulated Mn 2 O 3 NPs show strong antimicrobial efficacy against various strains. As a result, we can conclude that PF127-coated Mn 2 O 3 NPs may be effective as future anticancer agents and treatment options for breast cancer.","PeriodicalId":12758,"journal":{"name":"Green Processing and Synthesis","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135700025","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Abstract The effects of SiO2 and CO2 on the crystallization action of Ti-containing mixed molten slag (molten Ti-containing blast furnace slag and molten Ti slag) were discussed by thermodynamic calculation and specific experiments. The results of thermodynamic calculation indicated that the increase of SiO2 addition mass and CO2 oxidation time can promote the transformation of anosovite and sphene to rutile. The experiment results showed that the phase composition of modification slag was only rutile under the SiO2 addition mass of 110 g and the CO2 oxidation time of 180 s. Moreover, the formation theory of rutile was investigated. Using CO2 as an oxidizing gas can not only prepare rutile but also achieve carbon neutrality, which is a clean preparation method.
摘要通过热力学计算和具体实验，探讨了sio2和co2对含钛混合熔渣(含钛高炉熔渣和含钛熔渣)结晶行为的影响。热力学计算结果表明，增加sio2添加量和CO 2氧化时间可以促进铁云石和榍石向金红石的转变。实验结果表明，当sio2添加质量为110 g, CO 2氧化时间为180 s时，改性渣的物相组成仅为金红石。并对金红石的形成机理进行了研究。利用co2作为氧化气体制备金红石，既可实现碳中和，是一种清洁的制备方法。
{"title":"Clean preparation of rutile from Ti-containing mixed molten slag by CO<sub>2</sub> oxidation","authors":"Jiqing Han, Qiuping Feng, Li Zhang","doi":"10.1515/gps-2023-0083","DOIUrl":"https://doi.org/10.1515/gps-2023-0083","url":null,"abstract":"Abstract The effects of SiO2 and CO2 on the crystallization action of Ti-containing mixed molten slag (molten Ti-containing blast furnace slag and molten Ti slag) were discussed by thermodynamic calculation and specific experiments. The results of thermodynamic calculation indicated that the increase of SiO2 addition mass and CO2 oxidation time can promote the transformation of anosovite and sphene to rutile. The experiment results showed that the phase composition of modification slag was only rutile under the SiO2 addition mass of 110 g and the CO2 oxidation time of 180 s. Moreover, the formation theory of rutile was investigated. Using CO2 as an oxidizing gas can not only prepare rutile but also achieve carbon neutrality, which is a clean preparation method.","PeriodicalId":12758,"journal":{"name":"Green Processing and Synthesis","volume":"99 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136207657","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Abstract In this study, Origanum onites was used to synthesize the silver nanoparticles (AgNPs@Org). The structure of nanoparticles was identified by spectroscopic techniques. The maximum absorption was determined as 433 nm by UV-Vis spectroscopy. In Fourier-transform infrared spectroscopy spectrum, the characteristic signal was observed at 3,262 cm−1 belonging to the OH group. The crystal structure of nanoparticles was revealed by X-ray diffraction analysis. The diffraction peaks (2θ) can be indexed to 111, 200, 220, 311, and 222 components representing the face-centered cubic unit structure. The spherical particle size was calculated as 18.1 nm by transmission electron microscopy. Cytotoxic effects of extract and AgNPs@Org were executed by MTT assay using Capan-1, L929, and Caco-2 cell lines. AgNPs@Org exhibited the excellent cytotoxic effect on Capan-1 cell lines with the viability of 37.6% (0.5 µg·mL−1). However, the effect of O. onites extract on the viability of Capan-1 cell lines was found to be 24.6% and 55.4% at 1.0 and 0.5 µg·mL−1, respectively. AgNPs@Org effect on Caco-2 cell lines was found as 31.7% (1.0 µg·mL−1). In the L929 cell lines, the noticeable lethal influence was not detected for extract and nanoparticles. In other words, the extract and AgNPs@Org did not act a cytotoxic effect on L929 cell lines. Graphical abstract Synthesis, characterization, and anticancer activity of silver nanoparticles synthesized from Origanum onites.
{"title":"Synthesis and characterization of silver nanoparticles using Origanum onites leaves: Cytotoxic, apoptotic, and necrotic effects on Capan-1, L929, and Caco-2 cell lines","authors":"E. Gecer","doi":"10.1515/gps-2022-8126","DOIUrl":"https://doi.org/10.1515/gps-2022-8126","url":null,"abstract":"Abstract In this study, Origanum onites was used to synthesize the silver nanoparticles (AgNPs@Org). The structure of nanoparticles was identified by spectroscopic techniques. The maximum absorption was determined as 433 nm by UV-Vis spectroscopy. In Fourier-transform infrared spectroscopy spectrum, the characteristic signal was observed at 3,262 cm−1 belonging to the OH group. The crystal structure of nanoparticles was revealed by X-ray diffraction analysis. The diffraction peaks (2θ) can be indexed to 111, 200, 220, 311, and 222 components representing the face-centered cubic unit structure. The spherical particle size was calculated as 18.1 nm by transmission electron microscopy. Cytotoxic effects of extract and AgNPs@Org were executed by MTT assay using Capan-1, L929, and Caco-2 cell lines. AgNPs@Org exhibited the excellent cytotoxic effect on Capan-1 cell lines with the viability of 37.6% (0.5 µg·mL−1). However, the effect of O. onites extract on the viability of Capan-1 cell lines was found to be 24.6% and 55.4% at 1.0 and 0.5 µg·mL−1, respectively. AgNPs@Org effect on Caco-2 cell lines was found as 31.7% (1.0 µg·mL−1). In the L929 cell lines, the noticeable lethal influence was not detected for extract and nanoparticles. In other words, the extract and AgNPs@Org did not act a cytotoxic effect on L929 cell lines. Graphical abstract Synthesis, characterization, and anticancer activity of silver nanoparticles synthesized from Origanum onites.","PeriodicalId":12758,"journal":{"name":"Green Processing and Synthesis","volume":" ","pages":""},"PeriodicalIF":4.3,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44566814","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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