Abstract Ethylenediaminetetraacetic acid disodium (EDTA) can form stable complexes with many metals. To improve the leaching rate of gold and the consumption rate of thiosulfate, EDTA and ammonia were combined with copper ions to form a copper-EDTA-ammonia-thiosulfate system. Electrochemical methods were used to study the effect of thiosulfate, copper ion, EDTA, and polarization voltage. The results showed that increasing the concentrations of thiosulfate, copper ions, and EDTA promoted the dissolution of gold, which changed from electrochemical control to diffusion control after adding EDTA. The order of influence was thiosulfate > EDTA > copper ion. The pure gold leaching experiment showed that the dissolution rate of gold in the EDTA-ammonium-copper thiosulfate system was higher than that in the EDTA-copper-thiosulfuric acid system, thus achieving synergistic gold leaching.
{"title":"Electrochemical analysis of copper-EDTA-ammonia-gold thiosulfate dissolution system","authors":"P. Xiang, G. Ye","doi":"10.1515/gps-2023-0110","DOIUrl":"https://doi.org/10.1515/gps-2023-0110","url":null,"abstract":"Abstract Ethylenediaminetetraacetic acid disodium (EDTA) can form stable complexes with many metals. To improve the leaching rate of gold and the consumption rate of thiosulfate, EDTA and ammonia were combined with copper ions to form a copper-EDTA-ammonia-thiosulfate system. Electrochemical methods were used to study the effect of thiosulfate, copper ion, EDTA, and polarization voltage. The results showed that increasing the concentrations of thiosulfate, copper ions, and EDTA promoted the dissolution of gold, which changed from electrochemical control to diffusion control after adding EDTA. The order of influence was thiosulfate > EDTA > copper ion. The pure gold leaching experiment showed that the dissolution rate of gold in the EDTA-ammonium-copper thiosulfate system was higher than that in the EDTA-copper-thiosulfuric acid system, thus achieving synergistic gold leaching.","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":"41349037","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 Felodipine (FEL)–tetracyanoethylene (TCNE)–2,2′-bipyridine (Bpy) complex was prepared with FEL, TCNE–Bpy and characterized by fluorescence, ultraviolet, and infrared. By exploring the concentration and dosage of Bpy, it was found that 1 mL 2 × 10−3 mol‧L−1 of Bpy had the best effect. The sequence of reagent addition was determined to be followed by FEL, then by TCNE, and then followed by Bpy. The concentration of FEL was 2.5 × 10−4 to 9.0 × 10−3 mol‧L−1, which had a good linear relationship with fluorescence intensity. The compound had good accuracy, precision, and specificity, and could be used for the determination of phelodipine content in FEL sustained-release tablets.
摘要以非洛地平（FEL）、四氰基乙烯（TCNE）-2，2′-联吡啶（Bpy）为原料，制备了非洛地平-四氰基烯（TCNE。通过对Bpy的浓度和剂量的探索，发现1 mL 2×10−3 mol·L−1的Bpy效果最好。试剂添加的顺序被确定为随后是FEL，然后是TCNE，然后是Bpy。FEL浓度为2.5×10−4～9.0×10−3 mol·L−1，与荧光强度呈良好的线性关系。该化合物具有良好的准确度、精密度和特异性，可用于非洛地平缓释片中非洛地平含量的测定。
{"title":"Construction of fluorescence system of felodipine–tetracyanovinyl–2,2′-bipyridine complex","authors":"Yan Lang, Yuanjun Zeng, Chunbin Zhang, Kuilin Lv","doi":"10.1515/gps-2022-8134","DOIUrl":"https://doi.org/10.1515/gps-2022-8134","url":null,"abstract":"Abstract Felodipine (FEL)–tetracyanoethylene (TCNE)–2,2′-bipyridine (Bpy) complex was prepared with FEL, TCNE–Bpy and characterized by fluorescence, ultraviolet, and infrared. By exploring the concentration and dosage of Bpy, it was found that 1 mL 2 × 10−3 mol‧L−1 of Bpy had the best effect. The sequence of reagent addition was determined to be followed by FEL, then by TCNE, and then followed by Bpy. The concentration of FEL was 2.5 × 10−4 to 9.0 × 10−3 mol‧L−1, which had a good linear relationship with fluorescence intensity. The compound had good accuracy, precision, and specificity, and could be used for the determination of phelodipine content in FEL sustained-release tablets.","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":"48080167","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}
Paniz Zinsaz, Hoda Jafarizadeh-Malmiri, N. Anarjan, A. Nekoueifard, A. Javadi
Abstract Artemia urumiana extract was prepared and used in gold nanoparticles (Au NPs) synthesis via ultraviolet radiation accelerated technique. Response surface methodology was used to evaluate the effects of amount of extract (2–8 mL) and its pH (6.5–10.5) on the particle size, polydispersity index (PDI), zeta potential, and antioxidant activity of the fabricated Au NPs. Obtained results revealed that Au NPs with small particle size (61 nm) and PDI (0.387), and high zeta potential (−18.8 mV) and antioxidant activity (13.25%) were fabricated using 5.4 mL of the prepared A. urumiana extract with a pH value of 10.5. These optimum conditions were used in Au NPs synthesis, and NPs characteristics were assessed. Results indicated that the colloidal solution containing synthesized Au NPs had a broad emission peak at a wavelength of 562 nm. Furthermore, transmission electron microscopy analysis show that the fabricated spherical NPs had a mean particle size of 25 nm. Finally, bactericidal effects of the fabricated Au NPs were assessed against four selected bacteria strains, namely, Staphylococcus aureus, Escherichia coli, Bacillus subtilis, and Pseudomonas aeruginosa, and results indicated that synthesized NPs had strong antibacterial activity toward those, with clear zone diameters of 16, 17, 11, and 17 mm, respectively.
{"title":"Effectiveness of pH and amount of Artemia urumiana extract on physical, chemical, and biological attributes of UV-fabricated biogold nanoparticles","authors":"Paniz Zinsaz, Hoda Jafarizadeh-Malmiri, N. Anarjan, A. Nekoueifard, A. Javadi","doi":"10.1515/gps-2022-8062","DOIUrl":"https://doi.org/10.1515/gps-2022-8062","url":null,"abstract":"Abstract Artemia urumiana extract was prepared and used in gold nanoparticles (Au NPs) synthesis via ultraviolet radiation accelerated technique. Response surface methodology was used to evaluate the effects of amount of extract (2–8 mL) and its pH (6.5–10.5) on the particle size, polydispersity index (PDI), zeta potential, and antioxidant activity of the fabricated Au NPs. Obtained results revealed that Au NPs with small particle size (61 nm) and PDI (0.387), and high zeta potential (−18.8 mV) and antioxidant activity (13.25%) were fabricated using 5.4 mL of the prepared A. urumiana extract with a pH value of 10.5. These optimum conditions were used in Au NPs synthesis, and NPs characteristics were assessed. Results indicated that the colloidal solution containing synthesized Au NPs had a broad emission peak at a wavelength of 562 nm. Furthermore, transmission electron microscopy analysis show that the fabricated spherical NPs had a mean particle size of 25 nm. Finally, bactericidal effects of the fabricated Au NPs were assessed against four selected bacteria strains, namely, Staphylococcus aureus, Escherichia coli, Bacillus subtilis, and Pseudomonas aeruginosa, and results indicated that synthesized NPs had strong antibacterial activity toward those, with clear zone diameters of 16, 17, 11, and 17 mm, respectively.","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":"46563721","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}
Mai Thi Thanh Thuy, Nguyen Thi Van Anh, Mai Thi Xuan, T. Vinh, Phan Thi Binh
Abstract The reduced TiO2 film on which a photoelectrocatalytic (PEC) process had occurred was created from TiO2 nanotube film electrodes by the electrochemical reduction method. The obtained samples’ structure and morphology were characterized using UV-Vis diffuse reflectance spectroscopy, scanning electron microscopy, high-resolution transmission electron microscopy, photoluminescence, and X-ray diffraction. Cyclic voltammetry, linear sweep voltammetry, electrochemical impedance spectroscopy, chronoamperometry, UV-Vis absorbance spectroscopy, and Mott–Schottky plots were employed to examine the electrochemical and photoelectrochemical activities of the prepared electrodes. The results showed that the optimal conditions of cathodic polarization were a potential of −1.4 V for 60 min. The reduced TiO2 nanotube film electrode had better photoelectrochemical activities than pristine TiO2 under UV light due to the higher photocurrent density (13.7 mA‧cm−2) at 1.5 V (vs Ag/AgCl, sat. KCl reference electrode) compared to pristine TiO2 achieving 7.3 mA‧cm−2, indicating more effective charge separation and transport. The degradation of methyl orange (MO) on pristine TiO2 and reduced TiO2 electrodes was carried out in electrocatalytic (EC) and PEC conditions. The PEC process on the reduced TiO2 electrode had the highest MO processing efficiency (98.4%), and the EC process for MO removal on reduced TiO2 had higher efficiency (95.1%) than the PEC process on pristine TiO2 (89.2%).
{"title":"Study on the photoelectrocatalytic activity of reduced TiO2 nanotube films for removal of methyl orange","authors":"Mai Thi Thanh Thuy, Nguyen Thi Van Anh, Mai Thi Xuan, T. Vinh, Phan Thi Binh","doi":"10.1515/gps-2022-8159","DOIUrl":"https://doi.org/10.1515/gps-2022-8159","url":null,"abstract":"Abstract The reduced TiO2 film on which a photoelectrocatalytic (PEC) process had occurred was created from TiO2 nanotube film electrodes by the electrochemical reduction method. The obtained samples’ structure and morphology were characterized using UV-Vis diffuse reflectance spectroscopy, scanning electron microscopy, high-resolution transmission electron microscopy, photoluminescence, and X-ray diffraction. Cyclic voltammetry, linear sweep voltammetry, electrochemical impedance spectroscopy, chronoamperometry, UV-Vis absorbance spectroscopy, and Mott–Schottky plots were employed to examine the electrochemical and photoelectrochemical activities of the prepared electrodes. The results showed that the optimal conditions of cathodic polarization were a potential of −1.4 V for 60 min. The reduced TiO2 nanotube film electrode had better photoelectrochemical activities than pristine TiO2 under UV light due to the higher photocurrent density (13.7 mA‧cm−2) at 1.5 V (vs Ag/AgCl, sat. KCl reference electrode) compared to pristine TiO2 achieving 7.3 mA‧cm−2, indicating more effective charge separation and transport. The degradation of methyl orange (MO) on pristine TiO2 and reduced TiO2 electrodes was carried out in electrocatalytic (EC) and PEC conditions. The PEC process on the reduced TiO2 electrode had the highest MO processing efficiency (98.4%), and the EC process for MO removal on reduced TiO2 had higher efficiency (95.1%) than the PEC process on pristine TiO2 (89.2%).","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":"45501968","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 study synthesized Pluronic F-127 nanoparticles that encapsulate Fe 2 O 3 (PF127Fe 2 O 3 NPs), nanoparticles, characterized their formation, and evaluated their cytotoxicity and anticancer activity using Berberis vulgaris leaf extract, using various analytical methods such as FTIR, Ultraviolet-visible, photoluminescence, dynamic light scattering, X-ray diffraction, and morphology analysis. We assessed the antioxidant properties of PF127Fe 2 O 3 NPs, cytotoxicity, and apoptosis through 3-[4,5-dimethylthiazol-2-yl]-2,5 diphenyl tetrazolium bromide (MTT) assay and acridine orange/ethidium bromide staining in breast cancer cells, such as MCF7, and MDA-MB-231. The characterization results demonstrated that PF-127 was coated with Fe 2 O 3 nanoparticles. MTT assay data revealed that PF127Fe 2 O 3 NPs effectively prevent cancer cells from proliferating and act as an anticancer drug. The antimicrobial results revealed that the fabricated nanoparticles are effective against gram-negative ( Klebsiella pneumoniae , Escherichia coli , and Shigella dysenteriae ) and gram-positive ( Streptococcus pneumoniae , Staphylococcus aureus , and Bacillus subtilis ) bacteria. Treatment of PF127Fe 2 O 3 NPs in a dose-dependent manner on MCF7, and MDA-MB-231, exhibited increased antioxidant activity, nuclear damage, and apoptotic activity. These results confirm the apoptotic activity of PF127Fe 2 O 3 NPs. The study concludes that MCF7 appears to be more sensitive to PF127Fe 2 O 3 NPs than MDA-MB-231. In conclusion, we have found that it can be used as an effective antioxidant and anticancer agent in therapeutics.
{"title":"A study of the anticancer potential of Pluronic F-127 encapsulated Fe<sub>2</sub>O<sub>3</sub> nanoparticles derived from <i>Berberis vulgaris</i> extract","authors":"Abdullah R. Alzahrani","doi":"10.1515/gps-2023-0126","DOIUrl":"https://doi.org/10.1515/gps-2023-0126","url":null,"abstract":"Abstract The study synthesized Pluronic F-127 nanoparticles that encapsulate Fe 2 O 3 (PF127Fe 2 O 3 NPs), nanoparticles, characterized their formation, and evaluated their cytotoxicity and anticancer activity using Berberis vulgaris leaf extract, using various analytical methods such as FTIR, Ultraviolet-visible, photoluminescence, dynamic light scattering, X-ray diffraction, and morphology analysis. We assessed the antioxidant properties of PF127Fe 2 O 3 NPs, cytotoxicity, and apoptosis through 3-[4,5-dimethylthiazol-2-yl]-2,5 diphenyl tetrazolium bromide (MTT) assay and acridine orange/ethidium bromide staining in breast cancer cells, such as MCF7, and MDA-MB-231. The characterization results demonstrated that PF-127 was coated with Fe 2 O 3 nanoparticles. MTT assay data revealed that PF127Fe 2 O 3 NPs effectively prevent cancer cells from proliferating and act as an anticancer drug. The antimicrobial results revealed that the fabricated nanoparticles are effective against gram-negative ( Klebsiella pneumoniae , Escherichia coli , and Shigella dysenteriae ) and gram-positive ( Streptococcus pneumoniae , Staphylococcus aureus , and Bacillus subtilis ) bacteria. Treatment of PF127Fe 2 O 3 NPs in a dose-dependent manner on MCF7, and MDA-MB-231, exhibited increased antioxidant activity, nuclear damage, and apoptotic activity. These results confirm the apoptotic activity of PF127Fe 2 O 3 NPs. The study concludes that MCF7 appears to be more sensitive to PF127Fe 2 O 3 NPs than MDA-MB-231. In conclusion, we have found that it can be used as an effective antioxidant and anticancer agent in therapeutics.","PeriodicalId":12758,"journal":{"name":"Green Processing and Synthesis","volume":"46 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":"135611757","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 Phorate, a highly toxic organophosphorus pesticide, poses significant risks due to its efficiency, versatility, and affordability. Therefore, studying pretreatment and detection methods for phorate in complex samples is crucial. In this study, we synthesized core-shell phorate aptamer-functionalized magnetic nanoparticles using solvothermal and self-assembly techniques. Subsequently, we developed a magnetic dispersive solid-phase extraction and detection method to identifying phorate in plasma samples. Under optimal conditions, we achieved quantitation of phorate within a range of 2–700 ng·mL −1 using gas chromatography-mass spectrometry. The detection limit ( S / N = 3) was 0.46 ng·mL −1 , and the intraday and interday relative standard deviation were 3.4% and 4.1%, respectively. In addition, the material exhibited excellent specificity, an enrichment capacity (EF = 416), and reusability (≥15). During phorate extraction from real plasma samples, spiked recoveries ranged from 86.1% to 101.7%. These results demonstrate that our method offers superior extraction efficiency and detection capability for phorate in plasma samples.
{"title":"Studies on the extraction performance of phorate by aptamer-functionalized magnetic nanoparticles in plasma samples","authors":"Ting Wang, Junpeng Tan, Shenghui Xu, Yong Li, Hongxia Hao","doi":"10.1515/gps-2023-0065","DOIUrl":"https://doi.org/10.1515/gps-2023-0065","url":null,"abstract":"Abstract Phorate, a highly toxic organophosphorus pesticide, poses significant risks due to its efficiency, versatility, and affordability. Therefore, studying pretreatment and detection methods for phorate in complex samples is crucial. In this study, we synthesized core-shell phorate aptamer-functionalized magnetic nanoparticles using solvothermal and self-assembly techniques. Subsequently, we developed a magnetic dispersive solid-phase extraction and detection method to identifying phorate in plasma samples. Under optimal conditions, we achieved quantitation of phorate within a range of 2–700 ng·mL −1 using gas chromatography-mass spectrometry. The detection limit ( S / N = 3) was 0.46 ng·mL −1 , and the intraday and interday relative standard deviation were 3.4% and 4.1%, respectively. In addition, the material exhibited excellent specificity, an enrichment capacity (EF = 416), and reusability (≥15). During phorate extraction from real plasma samples, spiked recoveries ranged from 86.1% to 101.7%. These results demonstrate that our method offers superior extraction efficiency and detection capability for phorate in plasma samples.","PeriodicalId":12758,"journal":{"name":"Green Processing and Synthesis","volume":"8 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":"135318209","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, a modified synthetic zeolite adsorbent was synthesized by the hydrothermal method using coal fly ash as the main raw material, and the enhanced phosphorus adsorption properties from aqueous solutions were then evaluated. The modification parameters were specifically studied and optimized. Moreover, the effects of initial phosphorus concentration, adsorption time, and pH value on phosphorus absorption were also investigated. The adsorbent was characterized by the energy-dispersive spectrometer analysis, scanning electron microscopy, and Fourier transform infrared spectroscopy. Furthermore, the phosphorus adsorption properties of the zeolite adsorbent were preliminarily discussed through the perspectives of isothermal adsorption experiments, adsorption kinetics experiments, and adsorption thermodynamics calculations. The results show that the lanthanum ions were physically loaded on the surface and micropores of the adsorbent after modification, which helps to enhance the adsorption effect of phosphorus components from the aqueous solution. The phosphorus removal rate has been increased by about 65%. The adsorption process better fitted the Langmuir and Elovich equations. The theoretical calculation and analysis of adsorption thermodynamics showed that the adsorption and removal of phosphorus in water happens spontaneously.
{"title":"The enhanced adsorption properties of phosphorus from aqueous solutions using lanthanum modified synthetic zeolites","authors":"Dongsheng He, Beibei Chen, Yuan Tang, Qianqian Li, Kecheng Zhang, Zhili Li, Changming Xu","doi":"10.1515/gps-2023-0106","DOIUrl":"https://doi.org/10.1515/gps-2023-0106","url":null,"abstract":"Abstract In this study, a modified synthetic zeolite adsorbent was synthesized by the hydrothermal method using coal fly ash as the main raw material, and the enhanced phosphorus adsorption properties from aqueous solutions were then evaluated. The modification parameters were specifically studied and optimized. Moreover, the effects of initial phosphorus concentration, adsorption time, and pH value on phosphorus absorption were also investigated. The adsorbent was characterized by the energy-dispersive spectrometer analysis, scanning electron microscopy, and Fourier transform infrared spectroscopy. Furthermore, the phosphorus adsorption properties of the zeolite adsorbent were preliminarily discussed through the perspectives of isothermal adsorption experiments, adsorption kinetics experiments, and adsorption thermodynamics calculations. The results show that the lanthanum ions were physically loaded on the surface and micropores of the adsorbent after modification, which helps to enhance the adsorption effect of phosphorus components from the aqueous solution. The phosphorus removal rate has been increased by about 65%. The adsorption process better fitted the Langmuir and Elovich equations. The theoretical calculation and analysis of adsorption thermodynamics showed that the adsorption and removal of phosphorus in water happens spontaneously.","PeriodicalId":12758,"journal":{"name":"Green Processing and Synthesis","volume":"37 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":"135445403","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}
C. Raveendiran, P. Prabukanthan, J. Madhavan, P. A. Vivekanand, N. Arumugam, A. Almansour, Raju Suresh Kumar, S. Alaqeel, Karthikeyan Perumal
Abstract 2-Fluoro-N,N-diphenylbenzamide (2FNNDPBA), a natural nonlinear optical (NLO) single crystal, was incorporated from diphenylamine utilizing 2-fluoro benzoyl chloride as a side chain. The single crystals were successfully developed by a slothful evaporation arrangement approach utilizing ethyl acetate as a dissolvable solvent at room temperature. The synthesized compound fragmented ion peak (m/z = 291) was affirmed by gas-chromatographic mass spectrometry investigation. The unit cell dimensions were assessed using single-crystal X-ray diffraction analysis, which reveals that the crystals possess the orthorhombic system with space group Pbca. The existence of proton and carbon in a compound was affirmed by 1H and 13C nuclear magnetic resonance. The functional groups therein of 2FNNDPBA have been identified from FT-IR and FT-Raman studies and amide carbonyl stretching frequency peak appeared at 1,662 cm−1. The lower cut-off wavelength of 2FNNDPBA is found to be 240 nm and the experimental and theoretical optical band gap was calculated as 3.21 and 3.1083 eV. The UV-Visible spectrum of 2FNNDPBA shows two high-flying peaks at 240 and 273 nm. Major weight losses were observed between 160°C and 275°C for the designated compound. The thermal property for 2FNNDPBA was estimated by thermogravimetric analysis/differential thermal analysis investigation, which shows immense thermal strength up to 171°C. Density functional theory method with Gaussian 09 software for theoretical investigations of 2FNNDPBA for Mulliken charge analysis, highest occupied molecular orbital–lowest-lying unoccupied molecular orbital, and molecular electrostatic potential properties has been analyzed. The SHG productivity was proved by Kurtz-Perry powder strategy and has an efficiency 2.22 times that of standard potassium dihydrogen phosphate. The laser damage threshold of 2FNNDPBA crystals was discovered to be 1.18 GW·cm−2. The hyperpolarizability simulations further show that the current material has an excellent NLO activity tendency. The melting point of the developed crystal is 158°C. Graphical abstract
{"title":"Synthetic pathway of 2-fluoro-N,N-diphenylbenzamide with opto-electrical properties: NMR, FT-IR, UV-Vis spectroscopic, and DFT computational studies of the first-order nonlinear optical organic single crystal","authors":"C. Raveendiran, P. Prabukanthan, J. Madhavan, P. A. Vivekanand, N. Arumugam, A. Almansour, Raju Suresh Kumar, S. Alaqeel, Karthikeyan Perumal","doi":"10.1515/gps-2022-0097","DOIUrl":"https://doi.org/10.1515/gps-2022-0097","url":null,"abstract":"Abstract 2-Fluoro-N,N-diphenylbenzamide (2FNNDPBA), a natural nonlinear optical (NLO) single crystal, was incorporated from diphenylamine utilizing 2-fluoro benzoyl chloride as a side chain. The single crystals were successfully developed by a slothful evaporation arrangement approach utilizing ethyl acetate as a dissolvable solvent at room temperature. The synthesized compound fragmented ion peak (m/z = 291) was affirmed by gas-chromatographic mass spectrometry investigation. The unit cell dimensions were assessed using single-crystal X-ray diffraction analysis, which reveals that the crystals possess the orthorhombic system with space group Pbca. The existence of proton and carbon in a compound was affirmed by 1H and 13C nuclear magnetic resonance. The functional groups therein of 2FNNDPBA have been identified from FT-IR and FT-Raman studies and amide carbonyl stretching frequency peak appeared at 1,662 cm−1. The lower cut-off wavelength of 2FNNDPBA is found to be 240 nm and the experimental and theoretical optical band gap was calculated as 3.21 and 3.1083 eV. The UV-Visible spectrum of 2FNNDPBA shows two high-flying peaks at 240 and 273 nm. Major weight losses were observed between 160°C and 275°C for the designated compound. The thermal property for 2FNNDPBA was estimated by thermogravimetric analysis/differential thermal analysis investigation, which shows immense thermal strength up to 171°C. Density functional theory method with Gaussian 09 software for theoretical investigations of 2FNNDPBA for Mulliken charge analysis, highest occupied molecular orbital–lowest-lying unoccupied molecular orbital, and molecular electrostatic potential properties has been analyzed. The SHG productivity was proved by Kurtz-Perry powder strategy and has an efficiency 2.22 times that of standard potassium dihydrogen phosphate. The laser damage threshold of 2FNNDPBA crystals was discovered to be 1.18 GW·cm−2. The hyperpolarizability simulations further show that the current material has an excellent NLO activity tendency. The melting point of the developed crystal is 158°C. Graphical abstract","PeriodicalId":12758,"journal":{"name":"Green Processing and Synthesis","volume":"11 1","pages":"1148 - 1162"},"PeriodicalIF":4.3,"publicationDate":"2022-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49195855","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}
Ting Su, Bozhou Xianyu, Wen-wen Gao, Y. Gao, Pingqiang Gao, Cuiying Lu
Abstract Powder adsorbent made by coal gasification slag (CGS) was used to adsorb pollutants from coking wastewater (CW). This study initially focused on the removal efficiency of volatile phenol, NH3–N, and chemical oxygen demand (COD) from CW. The removal rate of volatile phenol increased from 48.90% to 70.50% after acid precipitation of CW by 4.0 mL reagent of sulfuric acid (3.0 M) and optimization of adsorption process by central composite design-response surface methodology with optimized conditions. Volume ratio of liquid and solid adsorbent (V L/S) and pH were the significant factors in the adsorption process. Batch experiment improved the volatile phenol, NH3–N, and COD removal rate to 85.1%, 41.6%, and 77.3%, respectively. Multi-grade batch process in grade 3 made a further promotion of pollutants removal rate as 98.5%, 73.6%, and 80.5%, respectively. Scanning electron microscope-energy dispersive spectrum and Fourier-transform infrared spectrometer were used to confirm the adsorption effect. CGS-based adsorbent for CW treatment has potential advantages due to the features of good adsorption performance and low cost.
{"title":"High removal efficiency of volatile phenol from coking wastewater using coal gasification slag via optimized adsorption and multi-grade batch process","authors":"Ting Su, Bozhou Xianyu, Wen-wen Gao, Y. Gao, Pingqiang Gao, Cuiying Lu","doi":"10.1515/gps-2022-8130","DOIUrl":"https://doi.org/10.1515/gps-2022-8130","url":null,"abstract":"Abstract Powder adsorbent made by coal gasification slag (CGS) was used to adsorb pollutants from coking wastewater (CW). This study initially focused on the removal efficiency of volatile phenol, NH3–N, and chemical oxygen demand (COD) from CW. The removal rate of volatile phenol increased from 48.90% to 70.50% after acid precipitation of CW by 4.0 mL reagent of sulfuric acid (3.0 M) and optimization of adsorption process by central composite design-response surface methodology with optimized conditions. Volume ratio of liquid and solid adsorbent (V L/S) and pH were the significant factors in the adsorption process. Batch experiment improved the volatile phenol, NH3–N, and COD removal rate to 85.1%, 41.6%, and 77.3%, respectively. Multi-grade batch process in grade 3 made a further promotion of pollutants removal rate as 98.5%, 73.6%, and 80.5%, respectively. Scanning electron microscope-energy dispersive spectrum and Fourier-transform infrared spectrometer were used to confirm the adsorption effect. CGS-based adsorbent for CW treatment has potential advantages due to the features of good adsorption performance and low cost.","PeriodicalId":12758,"journal":{"name":"Green Processing and Synthesis","volume":"12 1","pages":""},"PeriodicalIF":4.3,"publicationDate":"2022-12-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47678182","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}
Zhaoshuai Li, Guxia Wang, Jun Yan, Yongqiang Qian, Shengwei Guo, Yuan Liu, Dan Li
Abstract Comprehensive utilization of coal fly ashes (CFA) solid waste is a worldwide urgent issue. In China, tens of millions of tons of CFA are un-utilized and stored or discarded in landfills per year, causing a significant waste of resources and a serious environmental hazard. Herein, we developed a new process to reuse CFA and recycled polyvinyl chloride (r-PVC) to produce door or window sub-frame (DWSF) composite materials, realized CFA and r-PVC trash to treasure. In this process, aluminate-modified CFA mixing with r-PVC and other additives obtain a mixture, subsequently extruding into pellets, re-extrusion, cooling, shaping, hauling, and cutting to DWSF materials. The mechanical properties of these are excellent and meet the National Standards, with static bending and tensile strengths of 33 and 13.6 MPa, respectively, and a hardness of 89.2 HRR. Compared with the traditional CaCO3-based DWSF, our CFA-based DWSFs have higher competitive both from the perspective of “carbon neutrality” and production costs. More strikingly, this process is simple, robust, and easy to industrialize, which allows large-scale, value-added utilization of CFA.
{"title":"Value-added utilization of coal fly ash and recycled polyvinyl chloride in door or window sub-frame composites","authors":"Zhaoshuai Li, Guxia Wang, Jun Yan, Yongqiang Qian, Shengwei Guo, Yuan Liu, Dan Li","doi":"10.1515/gps-2023-0002","DOIUrl":"https://doi.org/10.1515/gps-2023-0002","url":null,"abstract":"Abstract Comprehensive utilization of coal fly ashes (CFA) solid waste is a worldwide urgent issue. In China, tens of millions of tons of CFA are un-utilized and stored or discarded in landfills per year, causing a significant waste of resources and a serious environmental hazard. Herein, we developed a new process to reuse CFA and recycled polyvinyl chloride (r-PVC) to produce door or window sub-frame (DWSF) composite materials, realized CFA and r-PVC trash to treasure. In this process, aluminate-modified CFA mixing with r-PVC and other additives obtain a mixture, subsequently extruding into pellets, re-extrusion, cooling, shaping, hauling, and cutting to DWSF materials. The mechanical properties of these are excellent and meet the National Standards, with static bending and tensile strengths of 33 and 13.6 MPa, respectively, and a hardness of 89.2 HRR. Compared with the traditional CaCO3-based DWSF, our CFA-based DWSFs have higher competitive both from the perspective of “carbon neutrality” and production costs. More strikingly, this process is simple, robust, and easy to industrialize, which allows large-scale, value-added utilization of CFA.","PeriodicalId":12758,"journal":{"name":"Green Processing and Synthesis","volume":" ","pages":""},"PeriodicalIF":4.3,"publicationDate":"2022-12-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47886919","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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