Main Group Chemistry最新文献_第5页

Green synthesis of CuO nanoparticles using Peganum harmala extract for photocatalytic and sonocatalytic degradation of reactive dye and organic compounds 绿色合成纳米CuO纳米颗粒的研究:用马来籽提取物光催化和声催化降解活性染料和有机化合物

IF 1.5 4区化学

Main Group Chemistry Pub Date : 2022-11-23 DOI: 10.3233/mgc-220045

Reza Fekri, S. Mirbagheri, E. Fataei, G. Ebrahimzadeh-Rajaei, L. Taghavi

{"title":"Green synthesis of CuO nanoparticles using Peganum harmala extract for photocatalytic and sonocatalytic degradation of reactive dye and organic compounds","authors":"Reza Fekri, S. Mirbagheri, E. Fataei, G. Ebrahimzadeh-Rajaei, L. Taghavi","doi":"10.3233/mgc-220045","DOIUrl":"https://doi.org/10.3233/mgc-220045","url":null,"abstract":" The present study was performed to evaluate the effectiveness of photocatalytic and sonocatalytic processes for the removal of reactive blue 5 dye and organic compounds of textile effluent in the presence of copper oxide nanoparticles (CuO NPs). CuO NPs were synthesized using Peganum harmala seed extract. The structure of NPs was confirmed using SEM, TEM, XRD, EDX, and FTIR techniques. The tests were carried out in a batch system to assess factors affecting the dye removal efficiency, including contact time, pH, NPs dosage, and initial dye concentration. The experimental results showed that the photocatalytic process (98.42%) produced a higher degradation percentage than the sonocatalytic process (76.16%). While, the dye removal efficiency was not significant in the dark conditions (without UV or US waves). The maximum removal of reactive blue 5 dye under photocatalytic and sonocatalytic conditions occurred at the presence of 0.15 g of CuO NPs and dye concentration of 40 and 60 mg/L, respectively. The kinetic data followed a pseudo-second-order model in both photocatalytic and sonocatalytic processes with a correlation coefficient higher than 0.99. Isotherm studies showed that the Langmuir model was the best isothermal model to describe the adsorptive behavior of CuO NPs in a dark condition. The results obtained from GC-MS showed that the photocatalytic process had a degradation efficiency of over 87% in the removal of organic compounds.","PeriodicalId":18027,"journal":{"name":"Main Group Chemistry","volume":"51 1","pages":""},"PeriodicalIF":1.5,"publicationDate":"2022-11-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82729061","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Lemon-juice derived highly efficient S-GQD/GO composite as a photocatalyst for regeneration of coenzyme under solar light 柠檬汁衍生的高效S-GQD/GO复合材料作为太阳光照下辅酶再生的光催化剂

IF 1.5 4区化学

Main Group Chemistry Pub Date : 2022-11-23 DOI: 10.3233/mgc-220049

Shesh Nath Yadav, B. Kumar, R. Yadav, S. K. Gupta, Pooja S. Singh, Chandani Singh, Ashutosh Kumar Singh

引用次数: 0

Evaluation of the antibacterial activity of zinc oxide nanoparticles doped with copper ions and co-doped with copper and silver ions 铜离子掺杂和铜银离子共掺杂氧化锌纳米颗粒的抗菌活性评价

IF 1.5 4区化学

Main Group Chemistry Pub Date : 2022-11-23 DOI: 10.3233/mgc-220098

Shadi Ashraf Nohegar, Arazoo Nejaei, E. Fataei, M. Ramezani, P. A. Eslami

{"title":"Evaluation of the antibacterial activity of zinc oxide nanoparticles doped with copper ions and co-doped with copper and silver ions","authors":"Shadi Ashraf Nohegar, Arazoo Nejaei, E. Fataei, M. Ramezani, P. A. Eslami","doi":"10.3233/mgc-220098","DOIUrl":"https://doi.org/10.3233/mgc-220098","url":null,"abstract":"The current feasibility study deals with the elimination of Escherichia coli (gram-negative) and Staphylococcus aureus (gram-positive) bacterial strains isolated from swimming pools using zinc oxide (ZnO) nanoparticles (NPs) doped with copper (Cu2+) ions (CuX%/ZnO NPs) and co-doped with copper (Cu2+) and silver (Ag+) ions (AgX%/CuY%/ZnO NPs) synthesized by sol-gel method. Antibacterial activity was evaluated by Agar well diffusion assay. As-produced NPs were characterized by X-ray diffraction, Field emission-scanning electron microscopy, Energy Dispersive X-Ray and Transmission electron microscopy techniques. The results showed that the size of the co-doped NPs was smaller than that of mono-doped NPs. Meanwhile, co-doped Ag5%/Cu5%/ZnO NPs had the maximum bactericidal activity, and the destructive effect on Gram-positive bacteria was greater than that on Gram-negative bacteria. The lowest effective nanoparticle concentrations were 0.1 and 0.05 g/mL. The main bactericidal mechanism, in addition to the size of co-doped NPs, was due to the formation of reactive oxygen species, so that the destruction of the bacterial cell wall and finally death occurred through the radicals formed.","PeriodicalId":18027,"journal":{"name":"Main Group Chemistry","volume":"3 1","pages":""},"PeriodicalIF":1.5,"publicationDate":"2022-11-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76245289","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

C-PCM study on the electronic and optical properties of Fe(CO)4B12N12 complexes Fe(CO)4B12N12配合物电子光学性质的C-PCM研究

IF 1.5 4区化学

Main Group Chemistry Pub Date : 2022-11-23 DOI: 10.3233/mgc-220052

Hedieh Asadzadeh, R. Ghiasi, M. Yousefi, S. Baniyaghoob

引用次数: 2

Synthesis of a new phenoxy-cyclophosphazene derivative Schiff base and its Ru(II), Co(III) complexes 一种新的苯氧基环磷腈衍生物席夫碱的合成及其Ru(II)， Co(III)配合物的合成

IF 1.5 4区化学

Main Group Chemistry Pub Date : 2022-11-23 DOI: 10.3233/mgc-220039

Kübra Nergiz, Nebahat Demirhan

引用次数: 0

Preparation and characterization of novel energetic nitrogen-rich polymers based on 1,3,5-triazine rings 基于1,3,5-三嗪环的新型富氮高聚物的制备与表征

IF 1.5 4区化学

Main Group Chemistry Pub Date : 2022-11-23 DOI: 10.3233/mgc-220051

E. Rezaii, Leila Nazmi Miardan, R. Fathi, M. Mahkam

{"title":"Preparation and characterization of novel energetic nitrogen-rich polymers based on 1,3,5-triazine rings","authors":"E. Rezaii, Leila Nazmi Miardan, R. Fathi, M. Mahkam","doi":"10.3233/mgc-220051","DOIUrl":"https://doi.org/10.3233/mgc-220051","url":null,"abstract":"Recently, the demand for new renewable and sustainable polymers, as well as their use as precursors to produce energetic materials, has emerged as a popular and burgeoning area of study. In this study, novel energetic nitrogen-rich polymers based on the 1,3,5-triazine ring were synthesized utilizing standard techniques. Four monomers were created initially: 4,6-dichloro-N-(4-chlorophenyl)-1,3,5-triazine-2-amine (A), 1,1’-bis(4,6-dichloro-1,3,5-triazine-2-yl)-1 H,1’H-5,5’-bitetrazole (B), 2,4,6-trihydrazinyl-1,3,5-triazine (C), N-(4-chlorophenyl)-4,6-dihydrazinyl-1,3,5-triazin-2-amine (D) In the second step, seven novel polymers named CHTA, TBT, TBTH, CTBT, THT, CTC, and TCT were synthesized via polyaddition reactions with monomers. Infra-red spectroscopy was used to characterize the nitrogen-rich polymers that were formed (IR). TGA measurements were utilized to investigate the thermal stability of substances. In addition, SEM and 1HNMR were utilized to describe the compounds. The results of thermal analysis indicate that TBT, CTC, and TCT are less stable than other nitrogen-rich polymers. The reaction yield for synthesized energetic polymer were 73%, 92%, 67%, 80%, 84%, 72%and 74%for CHTA, TBT, TBTH, CTBT, THT, CTC and TCT respectively.","PeriodicalId":18027,"journal":{"name":"Main Group Chemistry","volume":"112 1","pages":""},"PeriodicalIF":1.5,"publicationDate":"2022-11-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79639820","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Nano-CuOx for ciprofloxacin effective removal via wet peroxide oxidation catalysis and its practical application in wastewater 纳米cuox湿式过氧化氢催化去除环丙沙星及其在废水中的实际应用

IF 1.5 4区化学

Main Group Chemistry Pub Date : 2022-11-23 DOI: 10.3233/mgc-220104

Dan Liu, Chang-Hong Shi, Yang Nie, Wenjun Peng, Yin-an Ming

{"title":"Nano-CuOx for ciprofloxacin effective removal via wet peroxide oxidation catalysis and its practical application in wastewater","authors":"Dan Liu, Chang-Hong Shi, Yang Nie, Wenjun Peng, Yin-an Ming","doi":"10.3233/mgc-220104","DOIUrl":"https://doi.org/10.3233/mgc-220104","url":null,"abstract":"Using Cu(NO3)2·3H2O as active material and citric acid (CA) as complexing agent, heterogeneous catalyst nano-CuOx was prepared by sol-gel method. The catalytic wet peroxide oxidation (CWPO) reaction system was established accordingly. The system was used to treat ciprofloxacin (CIP) in simulated wastewater and real wastewater. The effects of the molar ratio of metal salt to CA, calcination temperature, H2O2 dosage, reaction temperature, and catalyst dosage on the physicochemical structure and the properties of CWPO were investigated. The results showed that when the molar ratio of CA to metal salt (Cu(NO3)2·3H2O) was 1.8, the calcination temperature was 500 °C, the concentration of H2O2 was 10 mmol · L–1, the reaction temperature was 95 °C, and the dosage of catalyst was 1 g · L–1, CWPO system has the best degradation effect on CIP. At thses optical conditions, the removal rate reached 86.8%, chemical oxygen demand (COD) removal rate reached 54.9%, and the recycling rate of the catalyst was very good. The refractory organics in actual pharmaceutical wastewater could be oxidized by this system as well, and the COD removal rate reaches 47%. The degradation mechanism of CIP showed that the main functions of the CWPO system were ·O2– and ·OH radicals. The possible degradation pathways were determined by ion chromatography to be intermediate products generated from piperazine ring cleavage, defluorination, decarboxylation, and quinoline hydroxylation of CIP. The catalyzing mechanism was investigated in detail; some useful information was obtained in this work.","PeriodicalId":18027,"journal":{"name":"Main Group Chemistry","volume":"92 1","pages":""},"PeriodicalIF":1.5,"publicationDate":"2022-11-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80988123","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Absorbance and emission studies in solution and the solid state and band gap determination of Pri3Ge(GePh2)4GePri3 Pri3Ge(GePh2)4GePri3在溶液中的吸光度和发射特性研究以及固态和带隙测定

IF 1.5 4区化学

Main Group Chemistry Pub Date : 2022-11-23 DOI: 10.3233/mgc-220100

F. A. Shumaker, C. S. Weinert

引用次数: 0

DFT, molecular docking and ADME prediction of tenofovir drug as a promising therapeutic inhibitor of SARS-CoV-2 Mpro 替诺福韦药物作为SARS-CoV-2 Mpro治疗抑制剂的DFT、分子对接和ADME预测

IF 1.5 4区化学

Main Group Chemistry Pub Date : 2022-11-23 DOI: 10.3233/mgc-220046

S. Shahab, M. Sheikhi, Maksim Khancheuski, H. Yahyaei, H. A. Almodarresiyeh, S. Kaviani

引用次数: 0

Easy to make highly efficient FG@ACC stable platform for sp3C-CF3 bond generation and NADH regeneration under sun light 易于制作高效FG@ACC稳定的sp3C-CF3键生成和NADH在阳光下再生的平台

IF 1.5 4区化学

Main Group Chemistry Pub Date : 2022-11-22 DOI: 10.3233/mgc-220071

Surendra Kumar Jaiswal, R. Yadav, Krishna Kumar, Satyam Singh, Surabhi Chaubey, Pooja S. Singh, S. Tripathi, S. K. Gupta, T. W. Kim, A. Singh

引用次数: 0