Current Research in Green and Sustainable Chemistry最新文献

{"title":"Acridine yellow G as a photo-induced electron transfer catalyzed radical metal-free synthesis of tetrahydrobenzo[b]pyran scaffolds in an aqueous media","authors":"Farzaneh Mohamadpour","doi":"10.1016/j.crgsc.2023.100356","DOIUrl":"https://doi.org/10.1016/j.crgsc.2023.100356","url":null,"abstract":"<div><p>We established a green approach for the radical synthesis of tetrahydrobenzo[<em>b</em>]pyran scaffolds by using Knoevenagel-Michael tandem cyclocondensation of aldehyde derivatives, malononitrile, and dimedone. Using visible light as a renewable energy source, a photo-induced electron transfer (PET) photocatalyst was exploited in an aqueous solution. A low-cost, readily available non-metal dye is the goal of this research. The photochemically catalyzed acridine yellow G (AYG) exhibits high yields, energy efficiency, and environmental friendliness, as well as speed-saving characteristics and ease of use. This allows for tracking of environmental and chemical variables over time. In this study, turnover number (TON) and turnover frequency (TOF) of tetrahydrobenzo[<em>b</em>]pyran scaffolds were determined. It is remarkable that gram-scale cyclization is feasible, indicating that it can be applied to industry.</p></div>","PeriodicalId":296,"journal":{"name":"Current Research in Green and Sustainable Chemistry","volume":"6 ","pages":"Article 100356"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"3136757","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}

{"title":"Modeling and prediction of CO2 partial pressure in methanol solution using artificial neural networks","authors":"Zohreh Khoshraftar,&nbsp;Ahad Ghaemi","doi":"10.1016/j.crgsc.2023.100364","DOIUrl":"https://doi.org/10.1016/j.crgsc.2023.100364","url":null,"abstract":"<div><p>CO₂ capture techniques are being developed faster by developing models that predict the solubility of CO₂ in various solvents. Artificial neural network (ANN) model is developed in the current study to predict the solubility of CO₂ in CH₃OH + H₂O system. Correlations can predict CO₂ solubility in liquids (in different mole fractions) for the temperatures of 258–390.0 K and pressure of 0–10 MPa, respectively. In this study, prediction data for the pressure essential to dissolve CO₂ in methanol solution are reported for temperature of 258–395.0 K. Multi-layer perceptron (MLP) and radial basis functions (RBF) were applied in this study. The predictions of solubility of carbon dioxide in mixtures of water and methanol are more accurate with MLP-ANN (artificial neural network) than RBF-ANN. The proposed models and reports of experimental data on CO₂ partial pressure are found to be in good agreement. It has been found that the ANN technique provides high accuracy and good prediction. As a result, the correlation coefficient R² = 0.99 was highly accurate and the mean square error (MSE) was less than 0.1. Levenberg-Marquardt (trainlm) with the lowest MSE measured at 0.00072863 with the strongest regression coefficient (R²). The best MSE validation performance of MLP and RBF networks was 0.0066566 and 0.2166952 at 30 epochs and 50 epochs, respectively. This study showed that the MLP and RBF model explained in this study are suitable to predicting CO₂ solubility in methanol solution.</p></div>","PeriodicalId":296,"journal":{"name":"Current Research in Green and Sustainable Chemistry","volume":"6 ","pages":"Article 100364"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"3136759","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}

{"title":"Evaluation of CaO derived from Cerastoderma glaucum of Caspian beach as a natural sorbent for CO2 capture","authors":"Zohreh Khoshraftar,&nbsp;Ahad Ghaemi","doi":"10.1016/j.crgsc.2023.100360","DOIUrl":"https://doi.org/10.1016/j.crgsc.2023.100360","url":null,"abstract":"<div><p>In this work, <em>Cerastoderma Glaucum</em> (CG) as a bio-sorbent, a low-cost, and nontoxic material, was investigated for CO₂ capture. The analysis of CaO from CG was carried out using X-ray diffraction (XRD), thermal gravimetric analysis (TGA), Fourier transform infrared (FTIR), a scanning electron microscope (SEM) with energy dispersive X-ray spectroscopy (EDX) and N₂ adsorption-desorption isotherm. The total pore volume was 0.0055 ​cm³/g, and the specific surface area (S_BET) was 1.9312 ​m²/g (BET: Brunauer–Emmett–Teller). The maximum CO₂ adsorption capacity reached 0.48 ​mmol/g at 25 ​°C and 4.5 ​bar. The CO₂ adsorption capacity was examined as a function of pressure. In the experiments, it was discovered that adsorption capacity increased with increasing pressure. As a second step, the isotherm models were used to determine how the adsorbent behaves. Hill, Freundlich, Koble–Corrigan, and Sips isotherm models are well correlated with the adsorption data experiments.</p></div>","PeriodicalId":296,"journal":{"name":"Current Research in Green and Sustainable Chemistry","volume":"6 ","pages":"Article 100360"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"2621366","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}

{"title":"Rapid biosynthesis and antibacterial activity of zinc oxide nanoparticles using fruit peel of Punica granatum L as cellulose","authors":"Narges Chamkouri,&nbsp;Nabi Jomehzadeh,&nbsp;Niloofar Naserzadeh","doi":"10.1016/j.crgsc.2023.100366","DOIUrl":"https://doi.org/10.1016/j.crgsc.2023.100366","url":null,"abstract":"<div><p>A biosynthesis of zinc oxide nanoparticles (ZnONPs) is investigated by using <em>Punica granatum</em> (PG) fruit peels as cellulose nanocrystals (CNC). As a first step, the phytochemical properties of (PG) were evaluated as reducing agents and as control agents for nanocomposites. The second step involved biosynthesizing PG–CNC–ZnONPs using a simple and rapid method, which was then confirmed by spectroscopy and microscopy. In addition, the antibacterial activity of PG–CNC–ZnONPs was tested against <em>S. aureus</em>, <em>E.coli</em>, <em>S. typhi</em>, and <em>S.flexneri</em> in vitro. <em>E. coli</em> and <em>S. flexneri</em> had zones of inhibition (mean values) of 14.19 mm and 14.16 mm, respectively, for PG–CNC–ZnONPs. For PG–CNC–ZnONPs, the minimum inhibitory concentration (MICs) that completely inhibited the growth of <em>S. aureus</em> was 250 μg/mL, while for <em>E. coli</em>, <em>S. flexneri</em>, and <em>S. typhi</em> the minimum inhibitory concentration (MICs) was achieved at 125 μg/mL, 31.2 μg/mL, and 15.6 μg/mL respectively. Moreover, the results of minimum bactericidal concentration (MBC) also showed that <em>S. typhi</em> had the lowest MBC (31.2 μg/mL) of all tested strains. The current work has the advantages of simplicity, a low particle size, a high concentration of Zn, and maximum inhibition zones.</p></div>","PeriodicalId":296,"journal":{"name":"Current Research in Green and Sustainable Chemistry","volume":"6 ","pages":"Article 100366"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"2621368","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}

{"title":"Enhancing electrocarboxylation reactions efficiency by cathode material selection","authors":"Didjay F. Bruggeman,&nbsp;Charlotte Graefin von Quadt,&nbsp;Cássia S. Santana,&nbsp;Amanda C. Garcia","doi":"10.1016/j.crgsc.2023.100380","DOIUrl":"https://doi.org/10.1016/j.crgsc.2023.100380","url":null,"abstract":"<div><p>Electrocarboxylation reactions hold significant promise as a sustainable and efficient method for carbon-carbon bond formation driven by electricity enabling the direct conversion of carbon dioxide (CO₂) into valuable organic compounds. Despite the potential and advantages of electrocarboxylation reactions over traditional methods, there are still challenges to address for their widespread implementation. In this contribution, our objective is to shed light on the role of these reactions in recycling and converting CO₂ into valuable chemicals. Specifically, we focus on exploring potential correlations between the performance of CO₂-based carboxylation and the choice of working electrode material in combination with the functional groups present in the substrates.</p></div>","PeriodicalId":296,"journal":{"name":"Current Research in Green and Sustainable Chemistry","volume":"7 ","pages":"Article 100380"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2666086523000267/pdfft?md5=65a50c8c276fe77893f0359499bddecc&pid=1-s2.0-S2666086523000267-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134651490","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Bio-based food packaging materials: A sustainable and Holistic approach for cleaner environment- a review","authors":"Prateek Gururani ,&nbsp;Pooja Bhatnagar ,&nbsp;Priyanka Dogra ,&nbsp;Harish Chandra Joshi ,&nbsp;P.K. Chauhan ,&nbsp;Mikhail S. Vlaskin ,&nbsp;Naveen Chandra Joshi ,&nbsp;Anna Kurbatova ,&nbsp;Adarchenko Irina ,&nbsp;Vinod Kumar","doi":"10.1016/j.crgsc.2023.100384","DOIUrl":"https://doi.org/10.1016/j.crgsc.2023.100384","url":null,"abstract":"<div><p>The contribution of plastic packaging in food is substantial, but issues associated with its biodegradability and recycling initiates major concerns for environment and human health thus necessitating substitution of conventional synthetic plastics with bio-based packaging materials. Studies have demonstrated economic competition of bio-based materials with synthetic plastics because of their biodegradability, wide availability, excellent barrier and mechanical properties. These materials can be commercialized on a large scale but still somehow are under-investigated in many areas. Moreover, some of the influencing factors including confusion between bio-based and biodegradability pose a significant challenge on evolution of bio-based packaging. Therefore, the review focuses on bio-based packaging materials derived from various renewable resources like biomass, microorganisms and microalgae involving their possible food packaging applications along with required development in multiple regions for proper utilization of offered advantages in the food packaging market.</p></div>","PeriodicalId":296,"journal":{"name":"Current Research in Green and Sustainable Chemistry","volume":"7 ","pages":"Article 100384"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2666086523000309/pdfft?md5=62faee90c01f9e7c9e9822f61b720139&pid=1-s2.0-S2666086523000309-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134831089","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Eco-friendly synthesis of MnO2 nanoparticles using Saraca asoca leaf extract and evaluation of in vitro anticancer activity","authors":"Sanjay S. Majani ,&nbsp;Sreelakshmi Sathyan ,&nbsp;Megha Vadakkethil Manoj ,&nbsp;Nimisha Vinod ,&nbsp;Sushma Pradeep ,&nbsp;Chandan Shivamallu ,&nbsp;Venkatachalaiah K.N ,&nbsp;Shiva Prasad Kollur","doi":"10.1016/j.crgsc.2023.100367","DOIUrl":"https://doi.org/10.1016/j.crgsc.2023.100367","url":null,"abstract":"<div><p>Manganese oxide nanoparticles (MnO₂ NPs) were synthesized through a simple one-pot green synthesis method using <em>Saraca asoca</em> leaves extract (SA-MnO₂ NPs), and their physicochemical properties were characterized using various analytical techniques, including electron microscopy (FESEM and TEM), X-ray diffraction (XRD), and electron diffracted X-ray spectroscopy (EDAX). The as-synthesized MnO₂ NPs had a highly crystalline structure with a calculated crystalline size of approximately 18 nm and a d-spacing value of 0.216 nm. The morphology of the SA-MnO₂ NPs was like stacked cubes with high elemental purity, as confirmed by the EDAX spectrum. Further, confirming the as-obtained crystalline size and d-spacing value from the XRD analysis, the samples were subjected to anti-cancer activities to evaluate their reactance against cancer cell lines. The in vitro anti-cancer activity of the synthesized material was assessed against two breast cancer cell lines, namely MCF7 and MDA-MB-231. The results showed that SA-MnO₂ NPs exhibited significantly lower levels of cytotoxicity against these cell lines, indicating their potential as an effective anticancer agent. Further, the IC₅₀ value of SA-MnO₂ NPs at 24 h was greater than 20 μg/mL. Therefore, the synthesized SA-MnO₂ NPs could be a promising candidate for developing novel breast cancer treatment therapies.</p></div>","PeriodicalId":296,"journal":{"name":"Current Research in Green and Sustainable Chemistry","volume":"6 ","pages":"Article 100367"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"2621367","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}

{"title":"Evaluation of antimicrobial, antioxidant and cytotoxicity potential of R-phycoerythrin extracted from Gracilaria corticata seaweed","authors":"M.P. Sudhakar ,&nbsp;G. Dharani ,&nbsp;Arumugam Paramasivam","doi":"10.1016/j.crgsc.2022.100352","DOIUrl":"https://doi.org/10.1016/j.crgsc.2022.100352","url":null,"abstract":"<div><p>In the present study, phycoerythrin pigment protein was extracted and purified from <em>Gracilaria corticata</em> (marine macroalga). The concentration of phycoerythrin (PE) obtained from <em>G. corticata</em> was 0.15 ​mg/ml (fresh weight). In this study, phycoerythrin expressed less antimicrobial activity against pathogens but found effective in total antioxidant activity (264.90 ​± ​10.20 ​μg/ml), DPPH scavenging effect (22.91 ​± ​1.90%) and ferrous ion chelating ability (26.06 ​± ​1.60%). Further, the cytotoxicity assay of PE using colon cancer cells such as SW620 and HCT-116 was tested. Different concentrations (2, 4, 8, 16, 32 ​μl) of phycoerythrin was tested in MTT assay after 24 ​h and 48 ​h incubation. The MTT assay concludes that increasing concentration of phycoerythrin (4.8 ​μg) decreases the cell viability to 42% after 48 ​h in SW 620 ​cell line. Whereas in the HCT 116 ​cell line the increasing concentration of phycoerythrin induces the cell growth on 24 ​h but later drastically reduced growth of cell line (39%) was observed after 48 ​h time in 4.8 ​μg of PE. From this preliminary study, the phycoerythrin pigment extracted from <em>Gracilaria corticata</em> proved to be a potential molecule of interest for cancer studies and diagnosis.</p></div>","PeriodicalId":296,"journal":{"name":"Current Research in Green and Sustainable Chemistry","volume":"6 ","pages":"Article 100352"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"2699606","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}

{"title":"A review of coagulation explaining its definition, mechanism, coagulant types, and optimization models; RSM, and ANN","authors":"Reem M. El-taweel ,&nbsp;Nora Mohamed ,&nbsp;Khlood A. Alrefaey ,&nbsp;Sh Husien ,&nbsp;A.B. Abdel-Aziz ,&nbsp;Alyaa I. Salim ,&nbsp;Nagwan G. Mostafa ,&nbsp;Lobna A. Said ,&nbsp;Irene Samy Fahim ,&nbsp;Ahmed G. Radwan","doi":"10.1016/j.crgsc.2023.100358","DOIUrl":"https://doi.org/10.1016/j.crgsc.2023.100358","url":null,"abstract":"<div><p>The textile business is one of the most hazardous industries since it produces several chemicals, such as dyes, which are released into water streams with ef-fluents. For the survival of the planet's life and the advancement of humanity, water is a crucial resource. One of the anthropogenic activities that pollute and consume water is the textile industry. Thus, the purpose of the current effort is to Apply coagulation as a Physico-chemical and biological treatment strat-egy with different techniques and mechanisms to treat the effluent streams of textile industries. The discharge of these effluents has a negative impact on the environment, marine life, and human health. Therefore, the treatment of these effluents before discharging is an important matter to reduce their adverse ef-fect. Many physico-chemical and biological treatment strategies for contaminants removal from polluted wastewater have been proposed. Coagulation is thought to be one of the most promising physico-chemical strategies for removing con-taminants and colouring pollutants from contaminated water. Coagulation is accompanied by a floculation process to aid precipitation, as well as the collection of the created sludge following the treatment phase.. Different commercial, and natural coagulants have been applied as a coagulants in the process of coagulation. Additionally, many factors such as; pH, coagulant dose, pollu-tants concentration are optimized to obtain high coagulants removal capacity. This review will discuss the coagulation process, coagulant types and aids in addition to the factors affecting the coagulation process. Additionally, a brief comparison between the coagulation process, and the other processes; princi-ple, advantages, disadvantages, and their efficiency were discussed throgh the review. Furthermore, it discusses the models and optimization techniques used for the coagulation process including response surface methodology (RSM), ar-tificial neural network (ANN), and several metaheuristic algorithms combined with ANN and RSM for optimization in previous work. The ANN model has more accurate results than RSM. The ANN combined with genetic algorithm gives an accurate predicted optimum solution.</p></div>","PeriodicalId":296,"journal":{"name":"Current Research in Green and Sustainable Chemistry","volume":"6 ","pages":"Article 100358"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"3136758","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}

{"title":"Site-selective electrochemical carboxylation of aromatic C(sp2)–H bonds with CO2","authors":"Rong Zhao ,&nbsp;Max Surke ,&nbsp;Zhipeng Lin ,&nbsp;Ali Alsalme ,&nbsp;Lutz Ackermann","doi":"10.1016/j.crgsc.2023.100377","DOIUrl":"10.1016/j.crgsc.2023.100377","url":null,"abstract":"<div><p>We present a facile and economical method for synthesizing aromatic carboxylic acid derivatives through direct electrochemical C(sp²)–H carboxylation of (hetero)arenes with CO₂. The reaction is carried out using a graphite felt anode and a nickel foam cathode in a user-friendly undivided cell setup under constant current conditions. Corresponding methyl carboxylates are obtained smoothly with good site-selectivity without the need of harsh chemical reductants or toxic transition metal catalysts. A cyclic voltammetry study was conducted, to distinguish between two potential mechanistic pathways. Additionally, <em>n</em>Bu₄NI was identified to serve as both electrolyte and anodic mediator. Notably, the methodology allows direct access to the desired product in a scale up manner.</p></div>","PeriodicalId":296,"journal":{"name":"Current Research in Green and Sustainable Chemistry","volume":"7 ","pages":"Article 100377"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2666086523000231/pdfft?md5=903b671c980005595d83dead8d1d76ff&pid=1-s2.0-S2666086523000231-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135843481","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}