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Influence of temperature and selenium substitution on electrical and dielectric characteristics of CoFe2O4 nanoparticles

IF 3.2 4区化学 Q2 CHEMISTRY, MULTIDISCIPLINARY

Journal of the Indian Chemical Society

Pub Date : 2025-02-11 DOI: 10.1016/j.jics.2025.101620

B. Ünal , A. Baykal , M.A. Almessiere , A. Mihmanlı

This study investigates the influence of Se⁴⁺ ion substitution on the electrical and dielectric properties of CoFe₂O₄ nanoparticles (CoFe_2-4xSe_3xO₄ (x ≤ 0.1) (NPs)) synthesized via a hydrothermal method. The electrical and dielectric characteristics were analyzed using a Novocontrol dielectric impedance analyzer. Results indicate that activation energies (E_a) remain stable at approximately 600 meV at higher temperatures (T ≥ 45 °C) but decrease significantly at lower temperatures, ranging from 300 meV (x = 0.02) to 20 meV (x = 0.08). A sharp reduction in DC conductivity, from 1.2 nS/cm (x = 0.04) to 0.27 nS/cm (x = 0.08), suggests enhanced electron mobility at this substitution level. AC conductivity exhibits strong frequency dependence, increasing from 0.15 nS/cm at 1 kHz to 0.13 μS/cm at 1 MHz for x = 0.08 at room temperature. Dielectric constant (ε′) and loss (ε′′) values exhibit significant variation with frequency, with ε′ reaching a maximum of 3.95 at 100 Hz for x = 0.08, reflecting enhanced polarization effects. Se⁴⁺ substitution also increases the real part of the electrical modulus (ReM) to 0.99 and the imaginary part (ImM) to 0.40 for x = 0.10, indicating improved energy storage and dissipation capabilities. The ImZ/ReZ ratio analysis reveals shifts in conduction mechanisms and polarization effects, with a notable transition at x = 0.04. Cole-Cole plots suggest multiple relaxation processes influenced by temperature and substitution levels, with relaxation times decreasing from 13 ms (70 °C) to 0.76 ms (120 °C) for x = 0.02. This study highlights the potential of Se⁴⁺-substituted Co-SFs for applications in electronic devices, particularly in energy storage and dissipation systems, and underscores the need for combined experimental and theoretical approaches to optimize these materials for advanced technological applications.

{"title":"Influence of temperature and selenium substitution on electrical and dielectric characteristics of CoFe2O4 nanoparticles","authors":"B. Ünal , A. Baykal , M.A. Almessiere , A. Mihmanlı","doi":"10.1016/j.jics.2025.101620","DOIUrl":"10.1016/j.jics.2025.101620","url":null,"abstract":"<div><div>This study investigates the influence of Se⁴⁺ ion substitution on the electrical and dielectric properties of CoFe<sub>2</sub>O<sub>4</sub> nanoparticles (CoFe<sub>2-4x</sub>Se<sub>3x</sub>O₄ (x ≤ 0.1) (NPs)) synthesized via a hydrothermal method. The electrical and dielectric characteristics were analyzed using a Novocontrol dielectric impedance analyzer. Results indicate that activation energies (<em>E</em><sub><em>a</em></sub>) remain stable at approximately 600 meV at higher temperatures (T ≥ 45 °C) but decrease significantly at lower temperatures, ranging from 300 meV (x = 0.02) to 20 meV (x = 0.08). A sharp reduction in DC conductivity, from 1.2 <em>nS/cm</em> (x = 0.04) to 0.27 <em>nS/cm</em> (x = 0.08), suggests enhanced electron mobility at this substitution level. AC conductivity exhibits strong frequency dependence, increasing from 0.15 <em>nS/cm</em> at 1 kHz to 0.13 <em>μS/cm</em> at 1 MHz for x = 0.08 at room temperature. Dielectric constant (ε′) and loss (ε′′) values exhibit significant variation with frequency, with ε′ reaching a maximum of 3.95 at 100 Hz for x = 0.08, reflecting enhanced polarization effects. Se⁴⁺ substitution also increases the real part of the electrical modulus (ReM) to 0.99 and the imaginary part (ImM) to 0.40 for x = 0.10, indicating improved energy storage and dissipation capabilities. The ImZ/ReZ ratio analysis reveals shifts in conduction mechanisms and polarization effects, with a notable transition at x = 0.04. Cole-Cole plots suggest multiple relaxation processes influenced by temperature and substitution levels, with relaxation times decreasing from 13 ms (70 °C) to 0.76 ms (120 °C) for x = 0.02. This study highlights the potential of Se⁴⁺-substituted Co-SFs for applications in electronic devices, particularly in energy storage and dissipation systems, and underscores the need for combined experimental and theoretical approaches to optimize these materials for advanced technological applications.</div></div>","PeriodicalId":17276,"journal":{"name":"Journal of the Indian Chemical Society","volume":"102 4","pages":"Article 101620"},"PeriodicalIF":3.2,"publicationDate":"2025-02-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143427670","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

Enhanced electrochemical properties of V2O5 and g-C3N4- V2O5 nanocomposites for rechargeable battery systems

IF 3.2 4区化学 Q2 CHEMISTRY, MULTIDISCIPLINARY

Journal of the Indian Chemical Society

Pub Date : 2025-02-10 DOI: 10.1016/j.jics.2025.101621

D. Keerthi Devi , M. Manisha , N. Venkatesham , Sridarala Ramu , Avula Edukondalu , Bandi Vittal Prasad

Nanostructured V₂O₅ (nanorods and nanoplatelets) and g-C₃N₄-V₂O₅ nanocomposite were synthesized via thermal condensation method and characterized using X-ray diffraction analysis (XRD), Fourier transform infrared spectroscopy (FTIR), UV–Visible diffuse reflectance spectroscopy (UV–Vis-DRS), Scanning electron microscopy (SEM), and Transmission electron microscopy (TEM). XRD analysis confirmed the phase purity of the samples, while IR and UV–Vis spectroscopy revealed the presence of pure V₂O₅ without impurities. The band gap of the V₂O₅ nanostructures was calculated to be approximately 2.0 eV from the optical absorption edge. SEM and TEM analysis revealed particle sizes ranging from 15 to 35 nm, with higher concentrations of oxalic acid yielding smaller particles. The quantity of oxalic acid was found to significantly influence the final morphology of the nanostructures. Electrochemical studies revealed good mobility and reversibility of cation, with reduced resistance and enhanced charge transfer kinetics in the g-C₃N₄-V₂O₅ nanocomposite. The nanocomposite exhibited a high discharge capacity of 320 mAh/g and a capacity retention of 85 % after 100 cycles. Impedance studies further revealed reduced resistance in the nanocomposite materials, indicating enhanced charge transfer kinetics. The synthesized V₂O₅ nanorods, nanoplatelets, and g-C₃N₄-V₂O₅ nanocomposite show promise as cathode materials for magnesium ion rechargeable batteries.

{"title":"Enhanced electrochemical properties of V2O5 and g-C3N4- V2O5 nanocomposites for rechargeable battery systems","authors":"D. Keerthi Devi , M. Manisha , N. Venkatesham , Sridarala Ramu , Avula Edukondalu , Bandi Vittal Prasad","doi":"10.1016/j.jics.2025.101621","DOIUrl":"10.1016/j.jics.2025.101621","url":null,"abstract":"<div><div>Nanostructured V<sub>2</sub>O<sub>5</sub> (nanorods and nanoplatelets) and g-C<sub>3</sub>N<sub>4</sub>-V<sub>2</sub>O<sub>5</sub> nanocomposite were synthesized via thermal condensation method and characterized using X-ray diffraction analysis (XRD), Fourier transform infrared spectroscopy (FTIR), UV–Visible diffuse reflectance spectroscopy (UV–Vis-DRS), Scanning electron microscopy (SEM), and Transmission electron microscopy (TEM). XRD analysis confirmed the phase purity of the samples, while IR and UV–Vis spectroscopy revealed the presence of pure V<sub>2</sub>O<sub>5</sub> without impurities. The band gap of the V<sub>2</sub>O<sub>5</sub> nanostructures was calculated to be approximately 2.0 eV from the optical absorption edge. SEM and TEM analysis revealed particle sizes ranging from 15 to 35 nm, with higher concentrations of oxalic acid yielding smaller particles. The quantity of oxalic acid was found to significantly influence the final morphology of the nanostructures. Electrochemical studies revealed good mobility and reversibility of cation, with reduced resistance and enhanced charge transfer kinetics in the g-C<sub>3</sub>N<sub>4</sub>-V<sub>2</sub>O<sub>5</sub> nanocomposite. The nanocomposite exhibited a high discharge capacity of 320 mAh/g and a capacity retention of 85 % after 100 cycles. Impedance studies further revealed reduced resistance in the nanocomposite materials, indicating enhanced charge transfer kinetics. The synthesized V<sub>2</sub>O<sub>5</sub> nanorods, nanoplatelets, and g-C<sub>3</sub>N<sub>4</sub>-V<sub>2</sub>O<sub>5</sub> nanocomposite show promise as cathode materials for magnesium ion rechargeable batteries.</div></div>","PeriodicalId":17276,"journal":{"name":"Journal of the Indian Chemical Society","volume":"102 3","pages":"Article 101621"},"PeriodicalIF":3.2,"publicationDate":"2025-02-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143395246","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

Enhanced the efficiency of TMs (Co and Ag) doped lead based mixed halides perovskite solar cells through the conduction band gap engineering

IF 3.2 4区化学 Q2 CHEMISTRY, MULTIDISCIPLINARY

Journal of the Indian Chemical Society

Pub Date : 2025-02-08 DOI: 10.1016/j.jics.2025.101618

Ali Mujtaba , M.I. Khan , Mahvish Fatima , Muhammad Atif , Merfat S. Al-Sharif , Dalia I. Saleh

This study introduces a method for improving the stability and efficiency of CsPbIBr₂ perovskite solar cells (PSCs) by using transition metals (TMs) doping. This approach not only decreases the lead (Pb) content but also reduces the conduction band offset (CBO), which helps to effectively minimize recombination losses. The structural properties of pure and transition metal doped CsPbIBr₂ perovskite film are investigated by X-ray diffraction (XRD). The XRD confirmed the cubic structure with the increased crystallite size from 18.4 to 37.8 nm. The optical properties were analyzed through UV–vis spectroscopy. The calculated energy band gap (E_g) reduced from 2.24 to 2.14 eV. So, by the transition metal doping in perovskite film, the conduction band (CB) of the perovskite layer is shifted near the CB of the electron transport layer (ETL). As a result, the conduction band offset (CBO) value decreases and a maximum number of electrons are injected from the perovskite layer into the TiO₂ ETL. The refractive index (n) increase (2.610–2.651) with Ag⁺ doping and reduced extinction coefficient (K). The electrical properties investigated by the current density-voltage (J-V) measurements, which confirm improved open-circuit voltage (V_oc) and short-circuit current density (J_sc), resulting in higher efficiency (7.35 %) compared to pure perovskite device (6.48 %). The enhanced performance is attributed to reduced recombination losses of electron-hole pairs within the perovskite layer as confirmed by reduced recombination resistance in EIS measurement, showcasing the potential of Ag doping as compared to pure and Co-doped devices for optimizing perovskite solar cells.

{"title":"Enhanced the efficiency of TMs (Co and Ag) doped lead based mixed halides perovskite solar cells through the conduction band gap engineering","authors":"Ali Mujtaba , M.I. Khan , Mahvish Fatima , Muhammad Atif , Merfat S. Al-Sharif , Dalia I. Saleh","doi":"10.1016/j.jics.2025.101618","DOIUrl":"10.1016/j.jics.2025.101618","url":null,"abstract":"<div><div>This study introduces a method for improving the stability and efficiency of CsPbIBr<sub>2</sub> perovskite solar cells (<em>PSCs</em>) by using transition metals (<em>TMs</em>) doping. This approach not only decreases the lead (Pb) content but also reduces the conduction band offset (<em>CBO</em>), which helps to effectively minimize recombination losses. The structural properties of pure and transition metal doped CsPbIBr<sub>2</sub> perovskite film are investigated by X-ray diffraction (<em>XRD</em>). The XRD confirmed the cubic structure with the increased crystallite size from 18.4 to 37.8 nm. The optical properties were analyzed through UV–vis spectroscopy. The calculated energy band gap (E<sub>g</sub>) reduced from 2.24 to 2.14 eV. So, by the transition metal doping in perovskite film, the conduction band (<em>CB</em>) of the perovskite layer is shifted near the <em>CB</em> of the electron transport layer (<em>ETL</em>). As a result, the conduction band offset (<em>CBO</em>) value decreases and a maximum number of electrons are injected from the perovskite layer into the TiO<sub>2</sub> ETL. The refractive index (<em>n</em>) increase (2.610–2.651) with Ag⁺ doping and reduced extinction coefficient (<em>K</em>). The electrical properties investigated by the current density-voltage (J-V) measurements, which confirm improved open-circuit voltage (<em>V</em><sub><em>oc</em></sub>) and short-circuit current density (<em>J</em><sub><em>sc</em></sub>), resulting in higher efficiency (7.35 %) compared to pure perovskite device (6.48 %). The enhanced performance is attributed to reduced recombination losses of electron-hole pairs within the perovskite layer as confirmed by reduced recombination resistance in EIS measurement, showcasing the potential of Ag doping as compared to pure and Co-doped devices for optimizing perovskite solar cells.</div></div>","PeriodicalId":17276,"journal":{"name":"Journal of the Indian Chemical Society","volume":"102 4","pages":"Article 101618"},"PeriodicalIF":3.2,"publicationDate":"2025-02-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143511192","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

Waste iron swarf reinforced epoxy/unsaturated polyester particulate composite films fabrication, characterization and peculiarities

IF 3.2 4区化学 Q2 CHEMISTRY, MULTIDISCIPLINARY

Journal of the Indian Chemical Society

Pub Date : 2025-02-07 DOI: 10.1016/j.jics.2025.101619

J. Sagaya Leenu Rathi , Y. Jaya Vinse Ruban , S. Ginil Mon

Waste iron swarf (WIS) reinforced epoxy/unsaturated polyester particulate composite films were fabricated. Elemental analysis was carried out on the waste iron swarf by Energy dispersive X-ray Analysis (EDAX). The waste iron swarf average particle diameter was perceived to be 0.272 μm, which is evidence from particle size analysis. The X-ray Diffraction (XRD) pattern shows the crystalline nature of the WIS filler. The waste iron swarf and engineered composite films were characterized by Fourier-Transform Infrared Spectroscopy (FTIR) to observe the existence of different functional groups. The surface topography of the fabricated composite films was captured by Field Emission Scanning Electron Microscopy (FESEM). This shows the distribution of waste iron swarf and unsaturated polyester in the epoxy matrix. Mechanical peculiarities of the fabricated films were examined with the help of Universal Testing Machine, which shows 30.4 % enhancement in tensile strength than pure epoxy.

引用次数: 0

Magnetic nanoparticles: Biosynthesis, characterization, surface functionalization and biomedical applications

IF 3.2 4区化学 Q2 CHEMISTRY, MULTIDISCIPLINARY

Journal of the Indian Chemical Society

Pub Date : 2025-02-07 DOI: 10.1016/j.jics.2025.101617

Christian Nwabunwanne , Samson O. Aisida , Rabia Javed , kovo G. Akpomie , Chawki Awada , Adil Alshoaibi , Fabian Ezema

Magnetic nanoparticles (MNPs) have become auspicious nanomaterials (NMs) having diverse biomedical applications. MNPs have become multifaceted tools in the field of biomedicine, revolutionizing diagnostics, therapeutics and regenerative medicine, including drug delivery and hyperthermia therapies. However, the toxicity and biocompatibility of MNPs are critical factors that must be considered when developing new MNPs concerning their suitability for a particular biomedical application. To enhance the biocompatibility of the samples, the method of synthesis adopted is highly indispensable for better properties of the samples. Biosynthesis is a biogenic synthesis method congenial for biomedical applications. This novel review introduces the biosynthesis approach and some characterization techniques in the fabrication of MNPs. Recent advancements in nanomedicine such as drug delivery, magnetic resonance imaging (MRI), hyperthermia and environmental remediation approaches have been expounded. Lastly, future directions of the impact of a synthesis protocol for MNPs and their biomedical applications have been summarized.

{"title":"Magnetic nanoparticles: Biosynthesis, characterization, surface functionalization and biomedical applications","authors":"Christian Nwabunwanne , Samson O. Aisida , Rabia Javed , kovo G. Akpomie , Chawki Awada , Adil Alshoaibi , Fabian Ezema","doi":"10.1016/j.jics.2025.101617","DOIUrl":"10.1016/j.jics.2025.101617","url":null,"abstract":"<div><div>Magnetic nanoparticles (MNPs) have become auspicious nanomaterials (NMs) having diverse biomedical applications. MNPs have become multifaceted tools in the field of biomedicine, revolutionizing diagnostics, therapeutics and regenerative medicine, including drug delivery and hyperthermia therapies. However, the toxicity and biocompatibility of MNPs are critical factors that must be considered when developing new MNPs concerning their suitability for a particular biomedical application. To enhance the biocompatibility of the samples, the method of synthesis adopted is highly indispensable for better properties of the samples. Biosynthesis is a biogenic synthesis method congenial for biomedical applications. This novel review introduces the biosynthesis approach and some characterization techniques in the fabrication of MNPs. Recent advancements in nanomedicine such as drug delivery, magnetic resonance imaging (MRI), hyperthermia and environmental remediation approaches have been expounded. Lastly, future directions of the impact of a synthesis protocol for MNPs and their biomedical applications have been summarized.</div></div>","PeriodicalId":17276,"journal":{"name":"Journal of the Indian Chemical Society","volume":"102 3","pages":"Article 101617"},"PeriodicalIF":3.2,"publicationDate":"2025-02-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143387289","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

In silico assessments, Design, synthesis, and biological evaluation of 5-methylisoxazole-4-carboxamide derivatives

IF 3.2 4区化学 Q2 CHEMISTRY, MULTIDISCIPLINARY

Journal of the Indian Chemical Society

Pub Date : 2025-02-04 DOI: 10.1016/j.jics.2025.101616

Pravin Khedkar, Rutuja Ukhade, Hemchandra K. Chaudhari

Isoxazole, a five-membered heterocyclic compound containing oxygen and nitrogen atoms, exhibited potent antioxidant, antibacterial, anticancer, anti-inflammatory, and antiviral activities. The 5-methylisoxazole-4-carboxylic acid molecule serves as a core structure for synthesizing various derivatives through amide bond formation. The main aim of the present work is synthesis of 12 derivatives from 5-methylisoxazole-4-carboxylic acid and evaluating their biological activities, including antimicrobial, antioxidant, and anticancer properties. Results indicate that several synthesised derivatives demonstrated significant biological activity. Notably, molecules 2, 12, and 14 exhibited superior antioxidant activity compared to the standard ascorbic acid, with molecule 14 showing the highest scavenging activity. In antimicrobial study, various compounds elicited potent inhibitory effects against Pseudomonas aeruginosa and Staphylococcus aureus. The anticancer activity revealed that most compounds reduced cell viability in the MCF-7 cell line, with IC50 values generally below 200 μg/mL, except for molecules 2, 11, and 13. This study highlights the potential of 5-methylisoxazole-4-carboxylic acid derivatives as promising candidates for further development in therapeutic applications due to their broad-spectrum biological activities.

{"title":"In silico assessments, Design, synthesis, and biological evaluation of 5-methylisoxazole-4-carboxamide derivatives","authors":"Pravin Khedkar, Rutuja Ukhade, Hemchandra K. Chaudhari","doi":"10.1016/j.jics.2025.101616","DOIUrl":"10.1016/j.jics.2025.101616","url":null,"abstract":"<div><div>Isoxazole, a five-membered heterocyclic compound containing oxygen and nitrogen atoms, exhibited potent antioxidant, antibacterial, anticancer, anti-inflammatory, and antiviral activities. The 5-methylisoxazole-4-carboxylic acid molecule serves as a core structure for synthesizing various derivatives through amide bond formation. The main aim of the present work is synthesis of 12 derivatives from 5-methylisoxazole-4-carboxylic acid and evaluating their biological activities, including antimicrobial, antioxidant, and anticancer properties. Results indicate that several synthesised derivatives demonstrated significant biological activity. Notably, molecules 2, 12, and 14 exhibited superior antioxidant activity compared to the standard ascorbic acid, with molecule 14 showing the highest scavenging activity. In antimicrobial study, various compounds elicited potent inhibitory effects against <em>Pseudomonas aeruginosa</em> and <em>Staphylococcus aureus</em>. The anticancer activity revealed that most compounds reduced cell viability in the MCF-7 cell line, with IC50 values generally below 200 μg/mL, except for molecules 2, 11, and 13. This study highlights the potential of 5-methylisoxazole-4-carboxylic acid derivatives as promising candidates for further development in therapeutic applications due to their broad-spectrum biological activities.</div></div>","PeriodicalId":17276,"journal":{"name":"Journal of the Indian Chemical Society","volume":"102 3","pages":"Article 101616"},"PeriodicalIF":3.2,"publicationDate":"2025-02-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143351177","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

Synthesis, characterization and biological evaluation of methyl dithiocarbonate-acenaphthenequinone (MDTCZ-ACQ) schiff base ligand and its coordination complexes with copper, nickel, zinc, and cobalt

IF 3.2 4区化学 Q2 CHEMISTRY, MULTIDISCIPLINARY

Journal of the Indian Chemical Society

Pub Date : 2025-02-04 DOI: 10.1016/j.jics.2025.101615

Manikandan Palaniappan , Karuppiah Nagaraj , Rajavel Rangappan , Mohammad Ahmad Wadaan , Gajanan S. Ghodake , Jeeva Vediyappan , Selvi Arumugam , Tamiliniyaa Manogaran , Kaviya Nagaraj , Ammasai Karthikeyan

This study presents the characterization of a novel Schiff base ligand, methyl dithiocarbonate with acenaphthenequinone (MDTCZ-ACQ), and its coordination complexes with copper (Cu), nickel (Ni), zinc (Zn), and cobalt (Co). The ligand and its metal complexes were synthesized and characterized through techniques such as UV–vis spectroscopy, FTIR, and NMR. Structural analysis indicated a tetrahedral geometry for the metal complexes. The electronic spectrum of the ligand showed a characteristic azomethine group absorption around 282 nm, along with a CS stretch at 1148 cm⁻¹, and an N–N group at 1045 cm⁻¹. The Schiff base ligand exhibited a strong peak at 1603 cm⁻¹, attributed to the ν(CN) bond, suggesting that the dithiocarbazate acenaphthenequinone moiety acts as a bidentate ligand coordinating through azomethine nitrogen and an oxygen atom. Biological investigations demonstrated that the Schiff base complexes showed enhanced activity against Escherichia coli, with a resistance zone of 19 mm, while the copper and zinc complexes exhibited superior antibacterial efficacy compared to nickel and cobalt complexes.

{"title":"Synthesis, characterization and biological evaluation of methyl dithiocarbonate-acenaphthenequinone (MDTCZ-ACQ) schiff base ligand and its coordination complexes with copper, nickel, zinc, and cobalt","authors":"Manikandan Palaniappan , Karuppiah Nagaraj , Rajavel Rangappan , Mohammad Ahmad Wadaan , Gajanan S. Ghodake , Jeeva Vediyappan , Selvi Arumugam , Tamiliniyaa Manogaran , Kaviya Nagaraj , Ammasai Karthikeyan","doi":"10.1016/j.jics.2025.101615","DOIUrl":"10.1016/j.jics.2025.101615","url":null,"abstract":"<div><div>This study presents the characterization of a novel Schiff base ligand, methyl dithiocarbonate with acenaphthenequinone (MDTCZ-ACQ), and its coordination complexes with copper (Cu), nickel (Ni), zinc (Zn), and cobalt (Co). The ligand and its metal complexes were synthesized and characterized through techniques such as UV–vis spectroscopy, FTIR, and NMR. Structural analysis indicated a tetrahedral geometry for the metal complexes. The electronic spectrum of the ligand showed a characteristic azomethine group absorption around 282 nm, along with a C<img>S stretch at 1148 cm⁻<sup>1</sup>, and an N–N group at 1045 cm⁻<sup>1</sup>. The Schiff base ligand exhibited a strong peak at 1603 cm⁻<sup>1</sup>, attributed to the ν(C<img>N) bond, suggesting that the dithiocarbazate acenaphthenequinone moiety acts as a bidentate ligand coordinating through azomethine nitrogen and an oxygen atom. Biological investigations demonstrated that the Schiff base complexes showed enhanced activity against <em>Escherichia coli</em>, with a resistance zone of 19 mm, while the copper and zinc complexes exhibited superior antibacterial efficacy compared to nickel and cobalt complexes.</div></div>","PeriodicalId":17276,"journal":{"name":"Journal of the Indian Chemical Society","volume":"102 3","pages":"Article 101615"},"PeriodicalIF":3.2,"publicationDate":"2025-02-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143351178","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

Zinc vanadate nanoparticle: An innovative electrochemical sensor synthesized via green fuel for the detection of ascorbic acid and its other applications

IF 3.2 4区化学 Q2 CHEMISTRY, MULTIDISCIPLINARY

Journal of the Indian Chemical Society

Pub Date : 2025-02-03 DOI: 10.1016/j.jics.2025.101607

H. Anantharama , J.R. Naveen Kumar , M. Rohit , Divya R. Basavannavar , B.M. Praveen , Asad Syed , R. Harini , G. Nagaraju , Bharath K. Devendra

Zinc vanadate (Zn₄V₂O₉) nanoparticles (NPs) have been effectively produced at 600 °C using the solution combustion technique. The as-synthesized Zn₄V₂O₉ NPs were further examined using a variety of methods, including photoluminescence (PL), Fourier transform infrared spectroscopy (FTIR), ultraviolet–visible spectroscopy (UV–Vis), and X-ray diffraction (XRD), to look at the surface morphological characteristics of a material or sample as well as its optical and crystal structural characteristics. Additionally, the synthesized Nps is employed in various processes including photocatalytic dye degradation of Rose Bengal dye and latent finger printing.Zn₄V₂O₉ NPs were discovered to have a crystal size of 45.97 nm, and the XRD pattern indicates that the synthesized NPs had a monoclinic crystallite structure. Scanning electron microscopy (SEM) is used to identify the shape of NPs. l-Ascorbic acid (LAA) presence is detected using the produced NPs. This study involves dropcasting of NPs and electrode modification. The electrode is utilized for additional research after being left overnight to dry.

{"title":"Zinc vanadate nanoparticle: An innovative electrochemical sensor synthesized via green fuel for the detection of ascorbic acid and its other applications","authors":"H. Anantharama , J.R. Naveen Kumar , M. Rohit , Divya R. Basavannavar , B.M. Praveen , Asad Syed , R. Harini , G. Nagaraju , Bharath K. Devendra","doi":"10.1016/j.jics.2025.101607","DOIUrl":"10.1016/j.jics.2025.101607","url":null,"abstract":"<div><div>Zinc vanadate (Zn<sub>4</sub>V<sub>2</sub>O<sub>9</sub>) nanoparticles (NPs) have been effectively produced at 600 °C using the solution combustion technique. The as-synthesized Zn<sub>4</sub>V<sub>2</sub>O<sub>9</sub> NPs were further examined using a variety of methods, including photoluminescence (PL), Fourier transform infrared spectroscopy (FTIR), ultraviolet–visible spectroscopy (UV–Vis), and X-ray diffraction (XRD), to look at the surface morphological characteristics of a material or sample as well as its optical and crystal structural characteristics. Additionally, the synthesized Nps is employed in various processes including photocatalytic dye degradation of Rose Bengal dye and latent finger printing.Zn<sub>4</sub>V<sub>2</sub>O<sub>9</sub> NPs were discovered to have a crystal size of 45.97 nm, and the XRD pattern indicates that the synthesized NPs had a monoclinic crystallite structure. Scanning electron microscopy (SEM) is used to identify the shape of NPs. <span>l</span>-Ascorbic acid (LAA) presence is detected using the produced NPs. This study involves dropcasting of NPs and electrode modification. The electrode is utilized for additional research after being left overnight to dry.</div></div>","PeriodicalId":17276,"journal":{"name":"Journal of the Indian Chemical Society","volume":"102 3","pages":"Article 101607"},"PeriodicalIF":3.2,"publicationDate":"2025-02-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143348521","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

Hydrothermal synthesis of Co, Cu dual doped CeO2 based nanoceramic electrolyte material and evaluation of its physical, electrochemical and dielectric properties for LTSOFC

IF 3.2 4区化学 Q2 CHEMISTRY, MULTIDISCIPLINARY

Journal of the Indian Chemical Society

Pub Date : 2025-02-03 DOI: 10.1016/j.jics.2025.101611

Kaliappan Tamilselvan, Arputharaj Samson Nesaraj

Co, Cu dual doped ceria nanoceramic electrolyte material with the composition of Ce_0.50Co_0.25Cu_0.25O_2-δ (CCCO) was synthesized by a simple hydrothermal route using stoichiometric amount of metal nitrates with sodium hydroxide precipitant. The properties of the prepared nano-ceramic particles were systematically evaluated by TGA, XRD, FTIR, EDAX, SEM and TEM. The XRD data confirmed the formation of FCC structure. FTIR data revealed the existence of M − O band in the sample. SEM and TEM photographs showed the manifestation of nano-grains in the sample. Presence of appropriate elements with atomic weight % was confirmed by the EDAX data. The circular sintered CCCO disk components were subjected to impedance and dielectric studies from room temperature to 540 ^oC in air. The oxide ion conductivity for the electrolyte was enhanced systematically from room temperature and attained a maximum value of 6.4583x10^-4 Scm^-1 at 540 ^oC. The activation energy was found to be 0.40 eV at the optimum temperature (540 ^oC). The dielectric constant of the sintered specimen was slowly enhanced with raise in temperature at varied frequency ranges. From the results, it was found that the proposed composition may be a better choice as an alternate electrolyte material for low temperature solid oxide fuel cell (LTSOFC) application.

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引用次数: 0

Enhanced antimicrobial activity: Synthesis and structural analysis of Co(II) and Cu(II) coordinated metal complexes with azo-thiol NS bidentate ligands

IF 3.2 4区化学 Q2 CHEMISTRY, MULTIDISCIPLINARY

Journal of the Indian Chemical Society

Pub Date : 2025-02-03 DOI: 10.1016/j.jics.2025.101610

Amro Ahmed Taha , Mai M. Khalaf , Hany M. Abd El-Lateef , Mohamed Gouda , Antar A. Abdelhamid , Mohamed Abdelbaset , Anas Alfarsi , Aly Abdou

In this study, we successfully designed and synthesized two novel metal complexes, Cobalt(II) (CoSDN) and Copper(II) (CuSDN), derived from the 4-[(2-sulfanylphenyl)diazenyl]naphthalen-1-ol (SDN) ligand. A suite of advanced techniques, including UV–Vis spectroscopy, mass spectrometry, infrared (IR) spectroscopy, elemental analysis, conductivity and magnetic measurements, and thermogravimetric analysis (TGA), was employed for comprehensive characterization. The IR spectroscopy results confirmed that the SDN ligand coordinates to metal ions through the nitrogen atom of its azo (-NN-) linkage and the sulfur atom of the thiol (-SH) group. Thermal analysis (TGA) revealed additional insights into the binding environment, particularly the involvement of water molecules within the complexes' structures. Furthermore, the antimicrobial potential of the SDN ligand, as well as its CoSDN and CuSDN complexes, was rigorously evaluated through in vitro testing against a spectrum of pathogenic bacteria and fungi. Notably, the CoSDN and CuSDN complexes demonstrated significantly enhanced antimicrobial activity compared to the free SDN ligand, effectively inhibiting specific microorganisms. These findings underline the exceptional promise of these metal complexes for future biomedical applications, suggesting their potential as innovative therapeutic agents to combat microbial threats.

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引用次数: 0

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