Pub Date : 2024-07-25DOI: 10.14233/ajchem.2024.31921
Mohammed Humayun Rashid Choudhury, Md Nizam Uddin, Partha Partim Nath, I. A. Siddiquey, Mohammad Razaul Karim, Md. Azharul Arafath, C. Ramana, Mohammed Muzibur Rahman
This work demonstrates the enhanced photocatalytic and antibacterial activities of copper and nitrogen-co-doped ZnO (Cu-N-ZnO) nanomaterials deposited onto soda-lime glass using a low-cost chemical approach. The effect of combined Cu-N doping is significant on the structure, properties, and performance of ZnO, as revealed from the characterization results. The synthesized materials crystallize in a hexagonal wurtzite structure of ZnO with a high degree of crystallinity, according to X-ray diffraction (XRD) experiments. The scanning electron microscopy (SEM) analysis indicated a uniformly distributed morphology with spherical-like ZnO nanoparticles. The optical studies revealed that the band gap decreases significantly in 5% Cu-5% N co-doped ZnO (2.89 eV) compared to intrinsic ZnO (3.36 eV). The photocatalytic and antibacterial activities of the samples were evaluated by the degradation of methylene blue dye in aqueous media and the inactivation of E. coli bacteria under visible light irradiation. The 5% Cu-5% N doped ZnO showed the highest dye degradation efficiency, which was 64.44% higher than that of the intrinsic ZnO and inactivated 62.53% more bacteria in the presence of light compared to that in a dark condition. Moreover, Cu-N co-doped ZnO inactivated 79.06% and 23.22% more bacteria than bare glass slides and ZnO under visible light irradiation, respectively.
这项研究利用一种低成本化学方法，证明了沉积在钠钙玻璃上的铜氮复合掺杂氧化锌（Cu-N-ZnO）纳米材料具有更强的光催化和抗菌活性。表征结果表明，铜氮联合掺杂对氧化锌的结构、性质和性能有显著影响。根据 X 射线衍射（XRD）实验，合成的材料结晶为六方菱锌矿结构的氧化锌，具有很高的结晶度。扫描电子显微镜（SEM）分析表明，氧化锌纳米粒子呈均匀分布的球状形态。光学研究表明，与本征 ZnO（3.36 eV）相比，5% Cu-5% N 共掺杂 ZnO 的带隙显著减小（2.89 eV）。在可见光照射下，通过降解水介质中的亚甲基蓝染料和灭活大肠杆菌，评估了样品的光催化和抗菌活性。5% Cu-5% N 掺杂氧化锌的染料降解效率最高，比固有氧化锌高出 64.44%，在光照条件下比黑暗条件下多灭活 62.53% 的细菌。此外，在可见光照射下，Cu-N 共掺杂氧化锌灭活的细菌数量分别比裸玻璃片和氧化锌多 79.06% 和 23.22%。
{"title":"Copper and Nitrogen co-doped ZnO Nanomaterials with Enhanced Photocatalytic and Antibacterial Activities","authors":"Mohammed Humayun Rashid Choudhury, Md Nizam Uddin, Partha Partim Nath, I. A. Siddiquey, Mohammad Razaul Karim, Md. Azharul Arafath, C. Ramana, Mohammed Muzibur Rahman","doi":"10.14233/ajchem.2024.31921","DOIUrl":"https://doi.org/10.14233/ajchem.2024.31921","url":null,"abstract":"This work demonstrates the enhanced photocatalytic and antibacterial activities of copper and nitrogen-co-doped ZnO (Cu-N-ZnO) nanomaterials deposited onto soda-lime glass using a low-cost chemical approach. The effect of combined Cu-N doping is significant on the structure, properties, and performance of ZnO, as revealed from the characterization results. The synthesized materials crystallize in a hexagonal wurtzite structure of ZnO with a high degree of crystallinity, according to X-ray diffraction (XRD) experiments. The scanning electron microscopy (SEM) analysis indicated a uniformly distributed morphology with spherical-like ZnO nanoparticles. The optical studies revealed that the band gap decreases significantly in 5% Cu-5% N co-doped ZnO (2.89 eV) compared to intrinsic ZnO (3.36 eV). The photocatalytic and antibacterial activities of the samples were evaluated by the degradation of methylene blue dye in aqueous media and the inactivation of E. coli bacteria under visible light irradiation. The 5% Cu-5% N doped ZnO showed the highest dye degradation efficiency, which was 64.44% higher than that of the intrinsic ZnO and inactivated 62.53% more bacteria in the presence of light compared to that in a dark condition. Moreover, Cu-N co-doped ZnO inactivated 79.06% and 23.22% more bacteria than bare glass slides and ZnO under visible light irradiation, respectively.","PeriodicalId":8494,"journal":{"name":"Asian Journal of Chemistry","volume":"47 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141803931","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-07-25DOI: 10.14233/ajchem.2024.31484
V. A. Doshi, Yogesh S. Patel
This work presents a comprehensive study on the design, synthesis, spectral characterization and antimicrobial assessment of new hydrazide-hydrazone incorporated benzimidazole compounds (6a-p). The synthesis of these compounds (6a-p) involved the condensation of benzimidazole derivative, 4-(1-methyl-5-nitro-1H-benzo[d]imidazol-2-yl)butane hydrazide with substituted aromatic aldehydes, utilizing an efficient and environmentally benign synthetic route. The IR, NMR and mass spectrometry were among the spectroscopic methods used to characterize the novel synthesized substances to confirm their chemical structures. The antimicrobial properties of the synthesized benzimidazole-based hydrazide-hydrazone compounds (6a-p) were systematically assessed against a panel of pathogenic microorganisms, including two Gram-positive and two Gram-negative bacteria and three fungi. The potency of antimicrobial drugs was assessed by determining their minimum inhibitory concentrations (MIC). The findings demonstrate that compounds 6k and 6p have moderated antibacterial action against positive-Gram bacteria S. pyogenus (MTCC 442) and S. aureus (MTCC 96), but considerable antimicrobial activity against Gram-negative bacteria E. coli (MTCC 443) and P. aeruginosa (MTCC 1688). Although every drug exhibits mild to moderate antifungal efficacy against A. niger (MTCC 282), A. clavatus (MTCC 1323) and C. albicans (MTCC 227). Furthermore, in silico prediction of compounds pharmacokinetic properties was also conducted.
这项工作全面研究了新的肼-腙结合苯并咪唑化合物（6a-p）的设计、合成、光谱表征和抗菌评估。这些化合物（6a-p）的合成涉及苯并咪唑衍生物、4-(1-甲基-5-硝基-1H-苯并[d]咪唑-2-基)丁烷酰肼与取代的芳香醛的缩合，采用的是高效、环保的合成路线。红外光谱、核磁共振和质谱是表征新型合成物质的光谱方法，以确认其化学结构。对合成的苯并咪唑类酰肼化合物（6a-p）的抗菌性能进行了系统评估，这些化合物针对的病原微生物包括两种革兰氏阳性菌、两种革兰氏阴性菌和三种真菌。通过测定最低抑菌浓度（MIC）来评估抗菌药物的效力。研究结果表明，化合物 6k 和 6p 对阳性革兰氏细菌化脓性链球菌（MTCC 442）和金黄色葡萄球菌（MTCC 96）具有中度抗菌作用，但对革兰氏阴性细菌大肠杆菌（MTCC 443）和绿脓杆菌（MTCC 1688）具有相当强的抗菌活性。虽然每种药物都对 A. niger（MTCC 282）、A. clavatus（MTCC 1323）和 C. albicans（MTCC 227）具有轻度到中度的抗真菌功效。此外，还对化合物的药代动力学特性进行了硅学预测。
{"title":"Novel Benzimidazole based Hydrazide-hydrazone Compounds: Synthesis, Characterization and Antimicrobial Assessment","authors":"V. A. Doshi, Yogesh S. Patel","doi":"10.14233/ajchem.2024.31484","DOIUrl":"https://doi.org/10.14233/ajchem.2024.31484","url":null,"abstract":"This work presents a comprehensive study on the design, synthesis, spectral characterization and antimicrobial assessment of new hydrazide-hydrazone incorporated benzimidazole compounds (6a-p). The synthesis of these compounds (6a-p) involved the condensation of benzimidazole derivative, 4-(1-methyl-5-nitro-1H-benzo[d]imidazol-2-yl)butane hydrazide with substituted aromatic aldehydes, utilizing an efficient and environmentally benign synthetic route. The IR, NMR and mass spectrometry were among the spectroscopic methods used to characterize the novel synthesized substances to confirm their chemical structures. The antimicrobial properties of the synthesized benzimidazole-based hydrazide-hydrazone compounds (6a-p) were systematically assessed against a panel of pathogenic microorganisms, including two Gram-positive and two Gram-negative bacteria and three fungi. The potency of antimicrobial drugs was assessed by determining their minimum inhibitory concentrations (MIC). The findings demonstrate that compounds 6k and 6p have moderated antibacterial action against positive-Gram bacteria S. pyogenus (MTCC 442) and S. aureus (MTCC 96), but considerable antimicrobial activity against Gram-negative bacteria E. coli (MTCC 443) and P. aeruginosa (MTCC 1688). Although every drug exhibits mild to moderate antifungal efficacy against A. niger (MTCC 282), A. clavatus (MTCC 1323) and C. albicans (MTCC 227). Furthermore, in silico prediction of compounds pharmacokinetic properties was also conducted.","PeriodicalId":8494,"journal":{"name":"Asian Journal of Chemistry","volume":"19 2","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141804192","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-07-25DOI: 10.14233/ajchem.2024.31729
Tan Tai Nguyen
The advancement of techniques for synthesizing nanoparticles is an important step in the field of nanotechnology. Gold nanoparticles (AuNPs) are increasing popular for detection of a multitude of biomolecules, proteins and nucleic acids. Incorporating AuNPs onto the sensing surface of biosensors to identify molecules with improved signals has been the subject of extensive research in the past ten years. This brief review describes the methods of AuNPs synthesis and their applications. It also describes a recent method to enhance surface plasmon resonance (SPR) detection capabilities using AuNPs.
{"title":"Gold Nanoparticles for Targeting of Biomedical Applications: A Review","authors":"Tan Tai Nguyen","doi":"10.14233/ajchem.2024.31729","DOIUrl":"https://doi.org/10.14233/ajchem.2024.31729","url":null,"abstract":"The advancement of techniques for synthesizing nanoparticles is an important step in the field of nanotechnology. Gold nanoparticles (AuNPs) are increasing popular for detection of a multitude of biomolecules, proteins and nucleic acids. Incorporating AuNPs onto the sensing surface of biosensors to identify molecules with improved signals has been the subject of extensive research in the past ten years. This brief review describes the methods of AuNPs synthesis and their applications. It also describes a recent method to enhance surface plasmon resonance (SPR) detection capabilities using AuNPs.","PeriodicalId":8494,"journal":{"name":"Asian Journal of Chemistry","volume":"45 23","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141805332","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-07-25DOI: 10.14233/ajchem.2024.31836
Ravi Akash, A. S. Nesaraj
Molybdate-based nanocrystalline materials have been considered as promising candidates in various energy and environmental remediation applications owing to their distinct characteristics and versatile functionalities. This article furnishes a comprehensive overview of recent advancements that have been made in synthesis techniques, characterization and applications of molybdate-based nanocrystalline materials in the realm of energy transformation and ecological restoration technologies. Molybdate-based nanomaterials may be classified as sulfides, phosphates and mixed-metal compounds which can be synthesized effectively by wet chemical method. The mechanisms underlying the enhanced performance of molybdate-based nanocrystalline materials are interpreted, along with strategies for improving their efficiency and stability.
{"title":"Molybdate-based Nanocrystalline Materials for Efficient Environmental Remediation and Electrochemical Energy Conversion Applications: An Update","authors":"Ravi Akash, A. S. Nesaraj","doi":"10.14233/ajchem.2024.31836","DOIUrl":"https://doi.org/10.14233/ajchem.2024.31836","url":null,"abstract":"Molybdate-based nanocrystalline materials have been considered as promising candidates in various energy and environmental remediation applications owing to their distinct characteristics and versatile functionalities. This article furnishes a comprehensive overview of recent advancements that have been made in synthesis techniques, characterization and applications of molybdate-based nanocrystalline materials in the realm of energy transformation and ecological restoration technologies. Molybdate-based nanomaterials may be classified as sulfides, phosphates and mixed-metal compounds which can be synthesized effectively by wet chemical method. The mechanisms underlying the enhanced performance of molybdate-based nanocrystalline materials are interpreted, along with strategies for improving their efficiency and stability.","PeriodicalId":8494,"journal":{"name":"Asian Journal of Chemistry","volume":"31 2","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141802539","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-07-25DOI: 10.14233/ajchem.2024.31953
Saikat Sarkar, Avijit Sarkar, Y. Aydogdu, F. Dagdelen, Sougata Sarkar, Krishna Chattopadhyay
A new ionic copper(II) complex of 1,10-phenanthroline was synthesized and structurally characterized by elemental and spectroscopic analyses, molar conductance and magnetic moment measurements. The crystal structure of complex was also investigated through single crystal X-ray diffraction analysis and suggestted a distorted octahedral geometry around copper(II), where one N atom from 1,10-phenanthroline and three O atoms from three H2O molecules occupying the basal plane while another Nphen and one Cl atom remain at the apical positions. Thus, the presence of three coordinated waters and chloride group along with the counter chloride ion and water of crystallization is responsible for extensive hydrogen bonding present in the molecule. Thus, the complex forms a 3D gigantic H-bonded network. The two types of intermolecular O–H···Cl and O–H···O hydrogen bonding play the pivotal role in crystal packing and plausible conductivity mechanism through the π-π interacting supports. The electrical conductivity and optical properties were also measured and the results focus on the semiconducting nature of the complex with optical band gap (Egd) value 1.23 eV.
通过元素分析、光谱分析、摩尔电导和磁矩测量，合成了一种新的 1,10-菲罗啉离子铜（II）配合物，并对其结构进行了表征。此外，还通过单晶 X 射线衍射分析研究了该复合物的晶体结构，结果表明铜（II）周围存在扭曲的八面体几何结构，其中来自 1,10- 菲罗啉的一个 N 原子和来自三个 H2O 分子的三个 O 原子占据基面，而另一个 Nphen 原子和一个 Cl 原子则位于顶端位置。因此，分子中存在的三个配位水和氯基，以及反氯离子和结晶水是造成广泛氢键的原因。因此，该复合物形成了一个巨大的三维氢键网络。分子间的 O-H-Cl 和 O-H-O 两种类型的氢键通过 π-π 相互作用的支撑物在晶体堆积和合理的导电机制中发挥了关键作用。此外，还测量了该复合物的导电性和光学特性，结果表明其具有半导体性质，光带隙（Egd）值为 1.23 eV。
{"title":"Synthesis, X-Ray Crystal Structure, Solid State Electrical and Optical Properties of New Copper(II) Complex with 1,10-Phenanthroline Ligand","authors":"Saikat Sarkar, Avijit Sarkar, Y. Aydogdu, F. Dagdelen, Sougata Sarkar, Krishna Chattopadhyay","doi":"10.14233/ajchem.2024.31953","DOIUrl":"https://doi.org/10.14233/ajchem.2024.31953","url":null,"abstract":"A new ionic copper(II) complex of 1,10-phenanthroline was synthesized and structurally characterized by elemental and spectroscopic analyses, molar conductance and magnetic moment measurements. The crystal structure of complex was also investigated through single crystal X-ray diffraction analysis and suggestted a distorted octahedral geometry around copper(II), where one N atom from 1,10-phenanthroline and three O atoms from three H2O molecules occupying the basal plane while another Nphen and one Cl atom remain at the apical positions. Thus, the presence of three coordinated waters and chloride group along with the counter chloride ion and water of crystallization is responsible for extensive hydrogen bonding present in the molecule. Thus, the complex forms a 3D gigantic H-bonded network. The two types of intermolecular O–H···Cl and O–H···O hydrogen bonding play the pivotal role in crystal packing and plausible conductivity mechanism through the π-π interacting supports. The electrical conductivity and optical properties were also measured and the results focus on the semiconducting nature of the complex with optical band gap (Egd) value 1.23 eV.","PeriodicalId":8494,"journal":{"name":"Asian Journal of Chemistry","volume":"43 17","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141803865","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-07-25DOI: 10.14233/ajchem.2024.31894
M. Bhanu, D. Ravinder, Police Vishnuvardhan Reddy, K. Rajashekhar, G. Sunitha, G. Kumar, J. L. Naik, G. Vinod
A series of rare earth (Ho3+) doped magnesium-copper nanoferrites with the general chemical compositions of Mg0.5Cu0.5HoxFe2-xO4 (where x = 0.000, 0.005, 0.010, 0.015, 0.020, 0.025 and 0.030) was fabricated by citrate sol-gel auto-combustion technique. The fabricated materials were investigated through powder XRD, FESEM, EDX, HRTEM, FTIR, UV-Vis, DC resistivity, TEP and VSM for magnetic properties. The crystallite size of the samples was determined to be in the range of 33-40 nm with increased Ho3+ content and the powder-XRD investigations validated the spinel cubic structure of the samples with the space group Fd3m. The analysis demonstrated that the lattice constant was reduced from 8.403 to 8.356 Å and according to the FE-SEM micrographs, the morphology of the samples were found to be spherical. The HR-TEM micrographs show that average particle size decreases from 64 to 48 nm. The FTIR examination revealed that their ν1 and ν2 absorption bands were located between 412-401 cm–1 and 562-547 cm–1, respectively and the optical band gap was found to be 2.77-3.28 eV. In Mg-Cu nanoferrites with Ho doping, there was no obvious increase in the elasticity moduli. It was observed that the thermal energy required to transform the p-type Mg-Cu nanoferrites from semiconducting to n-type semiconducting behaviour increases with increasing Ho doping and composition. The M-H loop saturation magnetization (Ms), coercivity (Hc) and retentivity (Mr) values were all enhanced when the Ho3+ concentration increased and varied anisotropically with Ho doping. The findings of this study suggested that Mg-Cu ferrites doped with Ho3+ might be beneficial for magnetic resonance imaging in biomedicine.
{"title":"Impact of Ho3+ Substitution on Structural, Morphological, Optical, Electrical, Thermoelectrical and Magnetic Properties of MgCuHoxFe2-xO4 (0 < x < 0.030) System","authors":"M. Bhanu, D. Ravinder, Police Vishnuvardhan Reddy, K. Rajashekhar, G. Sunitha, G. Kumar, J. L. Naik, G. Vinod","doi":"10.14233/ajchem.2024.31894","DOIUrl":"https://doi.org/10.14233/ajchem.2024.31894","url":null,"abstract":"A series of rare earth (Ho3+) doped magnesium-copper nanoferrites with the general chemical compositions of Mg0.5Cu0.5HoxFe2-xO4 (where x = 0.000, 0.005, 0.010, 0.015, 0.020, 0.025 and 0.030) was fabricated by citrate sol-gel auto-combustion technique. The fabricated materials were investigated through powder XRD, FESEM, EDX, HRTEM, FTIR, UV-Vis, DC resistivity, TEP and VSM for magnetic properties. The crystallite size of the samples was determined to be in the range of 33-40 nm with increased Ho3+ content and the powder-XRD investigations validated the spinel cubic structure of the samples with the space group Fd3m. The analysis demonstrated that the lattice constant was reduced from 8.403 to 8.356 Å and according to the FE-SEM micrographs, the morphology of the samples were found to be spherical. The HR-TEM micrographs show that average particle size decreases from 64 to 48 nm. The FTIR examination revealed that their ν1 and ν2 absorption bands were located between 412-401 cm–1 and 562-547 cm–1, respectively and the optical band gap was found to be 2.77-3.28 eV. In Mg-Cu nanoferrites with Ho doping, there was no obvious increase in the elasticity moduli. It was observed that the thermal energy required to transform the p-type Mg-Cu nanoferrites from semiconducting to n-type semiconducting behaviour increases with increasing Ho doping and composition. The M-H loop saturation magnetization (Ms), coercivity (Hc) and retentivity (Mr) values were all enhanced when the Ho3+ concentration increased and varied anisotropically with Ho doping. The findings of this study suggested that Mg-Cu ferrites doped with Ho3+ might be beneficial for magnetic resonance imaging in biomedicine.","PeriodicalId":8494,"journal":{"name":"Asian Journal of Chemistry","volume":"54 4","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141804663","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-07-25DOI: 10.14233/ajchem.2024.31255
N. Srivastava, K. Raees
Textile dyes are a prominent source of coloured organic substances that present an increasingly concerning risk to biodiversity. This problem could be remediated by incorporating nanoparticles as photocatalysts in photodegradation activities. The photocatalytic degradation of brilliant blue and Amaranth dyes has been investigated using ZnO-Fe2O3 bimetallic nanoparticles (Zn-Fe BN) in an aqueous media under sun rays. The Zn-Fe BN was synthesized using a chemical synthesis technique utilizing FeCl3 and ZnSO4·7H2O as starting materials and further characterized using XRD, FTIR, SEM, EDAX and DLS techniques. The degradation rate was examined by recording the absorbance value via a UV-Vis spectrophotometer. The experimental results demonstrated that the synthesized Zn-Fe BN was an effective catalyst in removing the dyes from water. The decomposition rate was effective with variations in the reaction parameters. As the concentration of the NaOH solution was increased, an increment in the rate of degradation was observed simultaneously, as well as for different amounts of catalyst. Hence, the removal of textile dyes could be made easier by adopting the methodology.
{"title":"Synthesis of Zinc-based Bimetallic Nanoparticles for the Degradation of Industrial Dyes","authors":"N. Srivastava, K. Raees","doi":"10.14233/ajchem.2024.31255","DOIUrl":"https://doi.org/10.14233/ajchem.2024.31255","url":null,"abstract":"Textile dyes are a prominent source of coloured organic substances that present an increasingly concerning risk to biodiversity. This problem could be remediated by incorporating nanoparticles as photocatalysts in photodegradation activities. The photocatalytic degradation of brilliant blue and Amaranth dyes has been investigated using ZnO-Fe2O3 bimetallic nanoparticles (Zn-Fe BN) in an aqueous media under sun rays. The Zn-Fe BN was synthesized using a chemical synthesis technique utilizing FeCl3 and ZnSO4·7H2O as starting materials and further characterized using XRD, FTIR, SEM, EDAX and DLS techniques. The degradation rate was examined by recording the absorbance value via a UV-Vis spectrophotometer. The experimental results demonstrated that the synthesized Zn-Fe BN was an effective catalyst in removing the dyes from water. The decomposition rate was effective with variations in the reaction parameters. As the concentration of the NaOH solution was increased, an increment in the rate of degradation was observed simultaneously, as well as for different amounts of catalyst. Hence, the removal of textile dyes could be made easier by adopting the methodology.","PeriodicalId":8494,"journal":{"name":"Asian Journal of Chemistry","volume":"49 24","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141805184","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}
Heavy metals abatement from polluted water through the use of green biosorbents is a growing research area due to its renewability and inexpensive. This study investigates the idea of utilizing Aegle marmelos (Bael) leaves as a biosorbent for the removal of heavy metal ions Cd(II), Pb(II) and Cr(VI) from simulated wastewater. The surface area, functionality, surface morphology and elemental analysis of biosorbent were analyzed by BET, FTIR, FE-SEM with EDX, respectively. Batch studies were done for biosorption of heavy metal ions. The maximum biosorption capacity of heavy metal ions were optimized by varying the pH (2-9), metal ions concentration (20-80 mg/L), biosorbent dose (0.02-0.2 g/L) and contact time (30-210 min). The Langmuir adsorption isotherms and pseudo-second order kinetics models were the most suitable for the biosorption of heavy metal ions and the maximum adsorption capacity was 11.85, 10.35 and 8.55 mg/g for Pb(II), Cd(II) and Cr(VI) heavy metals, respectively at optimized time 120 min. Thermodynamics studies revealed that biosorption of Pb(II), Cd(II) and Cr(VI) on A. marmelos biosorbent was exothermic and spontaneous in nature. Finally, the removal efficiency of A. marmelos biosorbent against the all three metals were found maximum for Pb(II) followed by Cd(II) and Cr(VI) due to the variations in hydration energy of these heavy metals.
{"title":"Sequestration of Heavy Metals from Water by Aegle marmelos (Bael) Leaves as Promising Biomaterial: Kinetic and Equilibrium Studies","authors":"Indu Rani, Sachin Kumari, Sushila Singh, Bhagya Shree, Muskan, Manju","doi":"10.14233/ajchem.2024.31987","DOIUrl":"https://doi.org/10.14233/ajchem.2024.31987","url":null,"abstract":"Heavy metals abatement from polluted water through the use of green biosorbents is a growing research area due to its renewability and inexpensive. This study investigates the idea of utilizing Aegle marmelos (Bael) leaves as a biosorbent for the removal of heavy metal ions Cd(II), Pb(II) and Cr(VI) from simulated wastewater. The surface area, functionality, surface morphology and elemental analysis of biosorbent were analyzed by BET, FTIR, FE-SEM with EDX, respectively. Batch studies were done for biosorption of heavy metal ions. The maximum biosorption capacity of heavy metal ions were optimized by varying the pH (2-9), metal ions concentration (20-80 mg/L), biosorbent dose (0.02-0.2 g/L) and contact time (30-210 min). The Langmuir adsorption isotherms and pseudo-second order kinetics models were the most suitable for the biosorption of heavy metal ions and the maximum adsorption capacity was 11.85, 10.35 and 8.55 mg/g for Pb(II), Cd(II) and Cr(VI) heavy metals, respectively at optimized time 120 min. Thermodynamics studies revealed that biosorption of Pb(II), Cd(II) and Cr(VI) on A. marmelos biosorbent was exothermic and spontaneous in nature. Finally, the removal efficiency of A. marmelos biosorbent against the all three metals were found maximum for Pb(II) followed by Cd(II) and Cr(VI) due to the variations in hydration energy of these heavy metals.","PeriodicalId":8494,"journal":{"name":"Asian Journal of Chemistry","volume":"44 6","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141803987","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-07-25DOI: 10.14233/ajchem.2024.31661
Dayanand Lalasangi, S. Hanagodimath, Mangesh S. Jadhav, Tairabi Khanadal, B. Padmashali
The fluorescence and absorption properties of (5-amino-1-phenylindolizin-3-yl)(4-methoxyphenyl)methanone were studied at room temperature in 15 solvents with dissimilar polarities. The impacts of solvent and GCRD parameters on the properties of the spectra are discussed. By utilizing the Gaussian 09 program, the ground-state dipole moments (µg) were have been measured experimentally and compared with theoretical values. After determining the ground-state dipole moments, the Kawski-Chamma-Viallet, Bakhshiev and Lippert equations were utilized to calculate the exciterted-state dipole moments (µe). It was observed that µe has been greater than the ground state for the dye. In this work, the impact of solvent on the absorption and emission spectra of (5-amino-1-phenylindolizin-3-yl)(4-methoxyphenyl)methanone was computed and estimated their dipole moments. For every molecule studied, there was a substantial change in the Stokes shift values increasing polarity.
{"title":"Estimation of Ground State and Excited State Dipole Moments of (5-Amino-1-phenylindolizin-3-yl)(4-methoxyphenyl)methanone","authors":"Dayanand Lalasangi, S. Hanagodimath, Mangesh S. Jadhav, Tairabi Khanadal, B. Padmashali","doi":"10.14233/ajchem.2024.31661","DOIUrl":"https://doi.org/10.14233/ajchem.2024.31661","url":null,"abstract":"The fluorescence and absorption properties of (5-amino-1-phenylindolizin-3-yl)(4-methoxyphenyl)methanone were studied at room temperature in 15 solvents with dissimilar polarities. The impacts of solvent and GCRD parameters on the properties of the spectra are discussed. By utilizing the Gaussian 09 program, the ground-state dipole moments (µg) were have been measured experimentally and compared with theoretical values. After determining the ground-state dipole moments, the Kawski-Chamma-Viallet, Bakhshiev and Lippert equations were utilized to calculate the exciterted-state dipole moments (µe). It was observed that µe has been greater than the ground state for the dye. In this work, the impact of solvent on the absorption and emission spectra of (5-amino-1-phenylindolizin-3-yl)(4-methoxyphenyl)methanone was computed and estimated their dipole moments. For every molecule studied, there was a substantial change in the Stokes shift values increasing polarity.","PeriodicalId":8494,"journal":{"name":"Asian Journal of Chemistry","volume":"28 12","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141804477","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-07-25DOI: 10.14233/ajchem.2024.31669
Tushar S. Umasare, Sanjay K. Patil, Jyotsna G. Pargaonkar
The metal(II) complexes of ML type of Co(II), Ni(II), Cu(II) and Zn(II) were synthesized using hydrazone Schiff base, N',N"-((1E,2E)-acenaphthylene-1,2-diylidene)bis(2-hydroxy benzohydrazide), which was synthesized by the condensation of acenaphthaquinone and 2-hydroxy benzohydrazide (1:2 molar ratio) in ethanol and characterized by various spectroscopic and analytical techniques, including UV-visible, FTIR, 1H NMR, 13C NMR, LC-MS, TGA-DSC, powder XRD and atomic absorption measurements. The magnetic susceptibility and electronic spectral data suggested that the Ni(II) and Cu(II) complexes have octahedral geometry, while the Co(II) and Zn(II) complexes have tetrahedral geometry. It has also been found that all the metal(II) complexes are paramagnetic, except Zn(II) complex. The molar conductance values indicated that all the metal(II) complexes are non-electrolytes in DMSO solvent. The stability of metal(II) complexes, the absence of coordinated and lattice water molecules in complexes and the proposed formula were all validated by the thermal analysis. All the compounds have average crystallite sizes on the nanoscale, according to powder XRD results. All of the compounds were tested for their in vitro antimicrobial activities against six bacteria (B. subtilis, S. aureus, Corynebacterium, P. aeruginosa, K. pneumoniae and E. coli) and three fungi (C. albicans, A. flavus and A. niger) at two different concentrations.
使用腙席夫碱、N',N"-((1E,2E)-苊烯-1,2-二亚基)双(2-羟基苯并吡嗪)合成了 Co(II)、Ni(II)、Cu(II)和 Zn(II)的 ML 型金属(II)配合物，该腙席夫碱是由苊醌和 2-羟基苯并吡嗪（摩尔比为 1：通过各种光谱和分析技术，包括紫外可见光、傅立叶变换红外光谱、1H NMR、13C NMR、LC-MS、TGA-DSC、粉末 XRD 和原子吸收测量，对其进行了表征。磁感应强度和电子能谱数据表明，镍（II）和铜（II）配合物具有八面体几何形状，而钴（II）和锌（II）配合物具有四面体几何形状。研究还发现，除 Zn(II) 复合物外，所有金属(II)复合物都具有顺磁性。摩尔电导值表明，所有金属（II）配合物在二甲基亚砜溶剂中都是非电解质。金属（II）络合物的稳定性、络合物中配位水分子和晶格水分子的缺失以及所提出的公式都通过热分析得到了验证。根据粉末 X 射线衍射结果，所有化合物的平均结晶尺寸均为纳米级。测试了所有化合物在两种不同浓度下对六种细菌（枯草杆菌、金黄色葡萄球菌、棒状杆菌、绿脓杆菌、肺炎双球菌和大肠杆菌）和三种真菌（白僵菌、黄曲霉和黑曲霉）的体外抗菌活性。
{"title":"Co(II), Ni(II), Cu(II) and Zn(II) Metal Complexes of Hydrazone Schiff Base Ligand: Synthesis, Characterization, Thermal Behaviour, Antioxidant and Antimicrobial Studies","authors":"Tushar S. Umasare, Sanjay K. Patil, Jyotsna G. Pargaonkar","doi":"10.14233/ajchem.2024.31669","DOIUrl":"https://doi.org/10.14233/ajchem.2024.31669","url":null,"abstract":"The metal(II) complexes of ML type of Co(II), Ni(II), Cu(II) and Zn(II) were synthesized using hydrazone Schiff base, N',N\"-((1E,2E)-acenaphthylene-1,2-diylidene)bis(2-hydroxy benzohydrazide), which was synthesized by the condensation of acenaphthaquinone and 2-hydroxy benzohydrazide (1:2 molar ratio) in ethanol and characterized by various spectroscopic and analytical techniques, including UV-visible, FTIR, 1H NMR, 13C NMR, LC-MS, TGA-DSC, powder XRD and atomic absorption measurements. The magnetic susceptibility and electronic spectral data suggested that the Ni(II) and Cu(II) complexes have octahedral geometry, while the Co(II) and Zn(II) complexes have tetrahedral geometry. It has also been found that all the metal(II) complexes are paramagnetic, except Zn(II) complex. The molar conductance values indicated that all the metal(II) complexes are non-electrolytes in DMSO solvent. The stability of metal(II) complexes, the absence of coordinated and lattice water molecules in complexes and the proposed formula were all validated by the thermal analysis. All the compounds have average crystallite sizes on the nanoscale, according to powder XRD results. All of the compounds were tested for their in vitro antimicrobial activities against six bacteria (B. subtilis, S. aureus, Corynebacterium, P. aeruginosa, K. pneumoniae and E. coli) and three fungi (C. albicans, A. flavus and A. niger) at two different concentrations.","PeriodicalId":8494,"journal":{"name":"Asian Journal of Chemistry","volume":"47 23","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141805288","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}
京公网安备 11010802042870号
京ICP备2023020795号-1
扫码关注我们
求助内容：
应助结果提醒方式：