Pub Date : 2024-11-22DOI: 10.1016/j.inoche.2024.113615
T. Veeramani , C. Venkataraju , G. Ramesh , A. Dinesh , Lalitha Gnanasekaran , Rajendra P. Patil , Manikandan Ayyar
The present work investigates the structural, optical, magneto-dielectric and antibacterial characteristics of ZnO-NiFe2O4 nanocomposites (NCs). Spinel NiFe2O4 and ZnO powders were synthesized individually by the sol–gel method. Then by using the ultrasonification technique, a series of (1-x)NiFe2O4+xZnO (x = 0.0, 0.15, 0.30, and 0.45) NCs were prepared. Powder XRD pattern confirms the existence of both spinel NiFe2O4 and ZnO peaks in the nanocomposites. The observation reveals that as the amount of ZnO in the nanocomposite, there is an increase in the lattice constant from 8.372 Å to 8.383 Å. The addition of ZnO in the nanocomposites broadens the light-absorbing range and raises the band gap (eV) energy from 1.7 eV to 2.5 eV. The dielectric constant measured at 1 kHz decreased from 496 to 403 as the ZnO content in the nanocomposite increased. However, the dielectric constant for NF0.4/ZnO0.6 NCs measured at 1 kHz increased from 403 to 583 for an applied magnetic field of 7000 Oe. Spinel NiFe2O4 with ZnO content shows lesser saturation magnetization (Ms) and coercivity compared to pure NiFe2O4. The magneto-capacitance (MC%) as a function of the magnetic field for all composition shows a positive response. NF0.55/ZnO0.45 (40 µg/ml) NCs showed better antimicrobial activity as compared to NiFe2O4 (40 µg/ml). This study may extend the scope of this composite as an electrode material in supercapacitors.
{"title":"Influence of ZnO on structural magneto-optical dielectric and antibacterial properties of NiFe2O4 (ZnO-NiFe2O4) nanocomposites prepared by sol–gel method","authors":"T. Veeramani , C. Venkataraju , G. Ramesh , A. Dinesh , Lalitha Gnanasekaran , Rajendra P. Patil , Manikandan Ayyar","doi":"10.1016/j.inoche.2024.113615","DOIUrl":"10.1016/j.inoche.2024.113615","url":null,"abstract":"<div><div>The present work investigates the structural, optical, magneto-dielectric and antibacterial characteristics of ZnO-NiFe<sub>2</sub>O<sub>4</sub> nanocomposites (NCs). Spinel NiFe<sub>2</sub>O<sub>4</sub> and ZnO powders were synthesized individually by the sol–gel method. Then by using the ultrasonification technique, a series of (1-x)NiFe<sub>2</sub>O<sub>4</sub>+xZnO (x = 0.0, 0.15, 0.30, and 0.45) NCs were prepared. Powder XRD pattern confirms the existence of both spinel NiFe<sub>2</sub>O<sub>4</sub> and ZnO peaks in the nanocomposites. The observation reveals that as the amount of ZnO in the nanocomposite, there is an increase in the lattice constant from 8.372 Å to 8.383 Å. The addition of ZnO in the nanocomposites broadens the light-absorbing range and raises the band gap (eV) energy from 1.7 eV to 2.5 eV. The dielectric constant measured at 1 kHz decreased from 496 to 403 as the ZnO content in the nanocomposite increased. However, the dielectric constant for NF<sub>0.4</sub>/ZnO<sub>0.6</sub> NCs measured at 1 kHz increased from 403 to 583 for an applied magnetic field of 7000 Oe. Spinel NiFe<sub>2</sub>O<sub>4</sub> with ZnO content shows lesser saturation magnetization (M<sub>s</sub>) and coercivity compared to pure NiFe<sub>2</sub>O<sub>4</sub>. The magneto-capacitance (MC%) as a function of the magnetic field for all composition shows a positive response. NF<sub>0.55</sub>/ZnO<sub>0.45</sub> (40 µg/ml) NCs showed better antimicrobial activity as compared to NiFe<sub>2</sub>O<sub>4</sub> (40 µg/ml). This study may extend the scope of this composite as an electrode material in supercapacitors.</div></div>","PeriodicalId":13609,"journal":{"name":"Inorganic Chemistry Communications","volume":"171 ","pages":"Article 113615"},"PeriodicalIF":4.4,"publicationDate":"2024-11-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142722756","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-11-22DOI: 10.1016/j.inoche.2024.113617
Qianqian Chen , Yuancai Lv , Junjie Pan , Weihan Chen , Gengwu Zhou , Xiaobing Yang , Kejun Cheng
Antibiotics, particularly tetracycline (TC), are extensively used in medicine, agriculture, animal husbandry, and the food industry due to their bacteriostatic and antibacterial properties. However, the widespread use of antibiotics has led to serious consequences, particularly in the form of water pollution and the emergence of numerous antibiotic-resistant microorganisms. Therefore, it is essential to implement effective measures to mitigate these environmental impacts. In this paper, we introduce a novel BiOCl@Bi-carbon heterojunction derived from Bi-MOF. The synthesized samples were thoroughly characterized through various techniques. The results demonstrate that BiOCl was successfully synthesized on the surface of Bi-MOF via in situ transformation, and that Bi-MOF was converted into Bi-doped porous carbon (Bi-carbon) after high-temperature annealing treatment. The coupling of BiOCl with Bi-carbon significantly enhances the photocurrent density. The photocatalytic activity of the samples was effectively evaluated by measuring the degradation of TC, with BiOCl@Bi-carbon demonstrating the highest photocatalytic efficiency, achieving a degradation rate of 96.27 % for TC. Additionally, BiOCl@Bi-carbon exhibits excellent stability. Its outstanding photocatalytic performance indicates significant potential for practical applications. Furthermore, we analyze the mechanism underlying the photocatalytic degradation of TC at the end of the study.
{"title":"A novel BiOCl@Bi-carbon heterojunction derived from Bi-MOF as an efficient and recyclable photocatalyst for degradation of tetracycline","authors":"Qianqian Chen , Yuancai Lv , Junjie Pan , Weihan Chen , Gengwu Zhou , Xiaobing Yang , Kejun Cheng","doi":"10.1016/j.inoche.2024.113617","DOIUrl":"10.1016/j.inoche.2024.113617","url":null,"abstract":"<div><div>Antibiotics, particularly tetracycline (TC), are extensively used in medicine, agriculture, animal husbandry, and the food industry due to their bacteriostatic and antibacterial properties. However, the widespread use of antibiotics has led to serious consequences, particularly in the form of water pollution and the emergence of numerous antibiotic-resistant microorganisms. Therefore, it is essential to implement effective measures to mitigate these environmental impacts. In this paper, we introduce a novel BiOCl@Bi-carbon heterojunction derived from Bi-MOF. The synthesized samples were thoroughly characterized through various techniques. The results demonstrate that BiOCl was successfully synthesized on the surface of Bi-MOF via in situ transformation, and that Bi-MOF was converted into Bi-doped porous carbon (Bi-carbon) after high-temperature annealing treatment. The coupling of BiOCl with Bi-carbon significantly enhances the photocurrent density. The photocatalytic activity of the samples was effectively evaluated by measuring the degradation of TC, with BiOCl@Bi-carbon demonstrating the highest photocatalytic efficiency, achieving a degradation rate of 96.27 % for TC. Additionally, BiOCl@Bi-carbon exhibits excellent stability. Its outstanding photocatalytic performance indicates significant potential for practical applications. Furthermore, we analyze the mechanism underlying the photocatalytic degradation of TC at the end of the study.</div></div>","PeriodicalId":13609,"journal":{"name":"Inorganic Chemistry Communications","volume":"171 ","pages":"Article 113617"},"PeriodicalIF":4.4,"publicationDate":"2024-11-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142722752","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-11-21DOI: 10.1016/j.inoche.2024.113600
Feride Naime Türk , Muhammet Şakir Abdullah Eren , Hasan Arslanoğlu
In this study, the removal of Reactive Yellow 145 (RB5) dye found in wastewater with halloysite clay mineral (HCM), which is easily available and cheap, was investigated. For the characterization of the adsorbent; SEM, BET, XRD, and Zeta Potential Contact Angle analyses were performed. The effect of parameters such as solution pH, temperature, contact time, initial dye concentration, and adsorbent amount on the adsorption of RB5 dye onto HCM was investigated. It has been determined that the Langmuir isotherm fits the experimental data better than other applied isotherms in mathematically defining the adsorption equilibrium. In the Langmuir isotherm, the adsorption capacity was 24.9 mg/g. To find the most suitable kinetic model for the study using experimental data, Pseudo-First-Order, Pseudo-Second-Order, Elovich, and Intra-Particle Diffusion models were tested, and it was decided that the most suitable model would be the Pseudo-Second Order kinetic model. Again, using experimental data, thermodynamic parameters (ΔG°, ΔH°, ΔS°) were calculated, and it was determined that the adsorption process was spontaneous and endothermic.
{"title":"Adsorption of Reactive Black 5 dye from aqueous solutions with a clay halloysite having a nanotubular structure: Interpretation of mechanism, kinetics, isotherm and thermodynamic parameters","authors":"Feride Naime Türk , Muhammet Şakir Abdullah Eren , Hasan Arslanoğlu","doi":"10.1016/j.inoche.2024.113600","DOIUrl":"10.1016/j.inoche.2024.113600","url":null,"abstract":"<div><div>In this study, the removal of Reactive Yellow 145 (RB5) dye found in wastewater with halloysite clay mineral (HCM), which is easily available and cheap, was investigated. For the characterization of the adsorbent; SEM, BET, XRD, and Zeta Potential Contact Angle analyses were performed. The effect of parameters such as solution pH, temperature, contact time, initial dye concentration, and adsorbent amount on the adsorption of RB5 dye onto HCM was investigated. It has been determined that the Langmuir isotherm fits the experimental data better than other applied isotherms in mathematically defining the adsorption equilibrium. In the Langmuir isotherm, the adsorption capacity was 24.9 mg/g. To find the most suitable kinetic model for the study using experimental data, Pseudo-First-Order, Pseudo-Second-Order, Elovich, and Intra-Particle Diffusion models were tested, and it was decided that the most suitable model would be the Pseudo-Second Order kinetic model. Again, using experimental data, thermodynamic parameters (ΔG°, ΔH°, ΔS°) were calculated, and it was determined that the adsorption process was spontaneous and endothermic.</div></div>","PeriodicalId":13609,"journal":{"name":"Inorganic Chemistry Communications","volume":"171 ","pages":"Article 113600"},"PeriodicalIF":4.4,"publicationDate":"2024-11-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142722758","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-11-21DOI: 10.1016/j.inoche.2024.113590
Manu Sharma , Pawan Kumar
A porous copper gallate bioinspired metal–organic framework (CuGA bio-MOF) has been synthesized using Copper (ll) chloride dihydrate and gallic acid (a polyphenol) under specific experimental environments to evaluate its antioxidant, drug tagging and release features. Initially, synthesized CuGA Bio-MOF has been analysed through various spectroscopic and microscopic techniques. To proceed further in research and gain a better understanding of readers, we have divided research work into two primary objectives: (a) evaluating the antioxidant properties of CuGA bio-MOF using the 2,2-diphenylpicrylhydrazyl (DPPH) assay and (b) exploring the release of the model drug Ibuprofen (IBU) from CuGA bio-MOF in phosphate-buffered saline (PBS). On confirmation of eminent antioxidant property (79.4 %) of pristine CuGA Bio-MOF, the tagging of Ibuprofen (IBU) on Bio-MOF, i.e., IBU@ CuGA Bio-MOF, has been confirmed through intermolecular hydrogen bonding. Our prolonged release of IBU studies endorsed 90 % release of the drug in 150 min at 37 °C, pH 7.4 in phosphate buffer saline (PBS) from IBU@ CuGA bio-MOF. Overall, the antioxidant features of CuGA bio-MOF and the drug release profile of IBU@CuGA bio-MOF exhibited potential real-world application as a suitable drug carrier.
{"title":"Synthesis and analysis of antioxidant properties of gallate based bio-MOF for drug delivery application","authors":"Manu Sharma , Pawan Kumar","doi":"10.1016/j.inoche.2024.113590","DOIUrl":"10.1016/j.inoche.2024.113590","url":null,"abstract":"<div><div>A porous copper gallate bioinspired metal–organic framework (CuGA bio-MOF) has been synthesized using Copper (ll) chloride dihydrate and gallic acid (a polyphenol) under specific experimental environments to evaluate its antioxidant, drug tagging and release features. Initially, synthesized CuGA Bio-MOF has been analysed through various spectroscopic and microscopic techniques. To proceed further in research and gain a better understanding of readers, we have divided research work into two primary objectives: (a) evaluating the antioxidant properties of CuGA bio-MOF using the 2,2-diphenylpicrylhydrazyl (DPPH) assay and (b) exploring the release of the model drug Ibuprofen (IBU) from CuGA bio-MOF in phosphate-buffered saline (PBS). On confirmation of eminent antioxidant property (79.4 %) of pristine CuGA Bio-MOF, the tagging of Ibuprofen (IBU) on Bio-MOF, i.e., IBU@ CuGA Bio-MOF, has been confirmed through intermolecular hydrogen bonding. Our prolonged release of IBU studies endorsed 90 % release of the drug in 150 min at 37 °C, pH 7.4 in phosphate buffer saline (PBS) from IBU@ CuGA bio-MOF. Overall, the antioxidant features of CuGA bio-MOF and the drug release profile of IBU@CuGA bio-MOF exhibited potential real-world application as a suitable drug carrier.</div></div>","PeriodicalId":13609,"journal":{"name":"Inorganic Chemistry Communications","volume":"171 ","pages":"Article 113590"},"PeriodicalIF":4.4,"publicationDate":"2024-11-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142743529","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-11-21DOI: 10.1016/j.inoche.2024.113592
G.K. Prashanth , A.S. Giresha , H.S. Lalithamba , Mohammed Aman , Srilatha Rao , K.N. Ravindra , Manoj Gadewar , N.P. Bhagya , M. Mahadeva Swamy , Vinita Chaturvedi
Metal oxide nanomaterials, notably ZnO NPs, have emerged as pivotal components in various industries due to their exceptional properties. This study focuses on enhancing the bioactive properties of ZnO NPs by co-doping them with Ni and Mn, employing a cost-effective and eco-friendly synthesis method utilizing S. glauca leaf extract as a bio-reductant. Characterization techniques including PXRD, SEM, EDAX, FTIR, and UV–Visible were utilized to analyse the synthesized NPs. The research evaluated the anti-carcinogenic anti-tubercular and anti-bacterial activities. Cytotoxicity of the NPs was examined towards general mammalian cells and yeast cells. Antioxidant activity was determined by Free radical scavenging, Power to reduce ferric ions and inhibition of lipid peroxidation. Also examined the potential of NPs to inhibit the Hyaluronidase enzyme activity, that breaks down Hyaluronic acid and helps in the prognosis of tumour metastasis. Results revealed, significant impacts on these biological processes, highlighting the relevance of our findings for cytotoxicity assessment, therapeutic applications, and biomedical advancements. Results indicated promising potential for Ni and Mn-doped ZnO NPs across various biomedical applications, demonstrating enhanced cytotoxicity against cancer cells, antimicrobial efficacy, antioxidant properties, and enzyme-inhibitory effects. The study concludes that the doped NPs offer versatile functionalities, paving the way for further exploration and development in biomedical and clinical applications, with potential implications for improving healthcare and patient outcomes.
{"title":"Sustainable bio-fabrication of Ni/Mn co-doped ZnO nanoparticles using Simarouba glauca leaf extract: Evaluation of non-cytotoxic, anti-carcinogenic, anti-tubercular, anti-bacterial properties, anti-oxidant and hyaluronidase inhibition activities","authors":"G.K. Prashanth , A.S. Giresha , H.S. Lalithamba , Mohammed Aman , Srilatha Rao , K.N. Ravindra , Manoj Gadewar , N.P. Bhagya , M. Mahadeva Swamy , Vinita Chaturvedi","doi":"10.1016/j.inoche.2024.113592","DOIUrl":"10.1016/j.inoche.2024.113592","url":null,"abstract":"<div><div>Metal oxide nanomaterials, notably ZnO NPs, have emerged as pivotal components in various industries due to their exceptional properties. This study focuses on enhancing the bioactive properties of ZnO NPs by co-doping them with Ni and Mn, employing a cost-effective and eco-friendly synthesis method utilizing <em>S. glauca</em> leaf extract as a bio-reductant. Characterization techniques including PXRD, SEM, EDAX, FTIR, and UV–Visible were utilized to analyse the synthesized NPs. The research evaluated the anti-carcinogenic anti-tubercular and anti-bacterial activities. Cytotoxicity of the NPs was examined towards general mammalian cells and yeast cells. Antioxidant activity was determined by Free radical scavenging, Power to reduce ferric ions and inhibition of lipid peroxidation. Also examined the potential of NPs to inhibit the Hyaluronidase enzyme activity, that breaks down Hyaluronic acid and helps in the prognosis of tumour metastasis. Results revealed, significant impacts on these biological processes, highlighting the relevance of our findings for cytotoxicity assessment, therapeutic applications, and biomedical advancements. Results indicated promising potential for Ni and Mn-doped ZnO NPs across various biomedical applications, demonstrating enhanced cytotoxicity against cancer cells, antimicrobial efficacy, antioxidant properties, and enzyme-inhibitory effects. The study concludes that the doped NPs offer versatile functionalities, paving the way for further exploration and development in biomedical and clinical applications, with potential implications for improving healthcare and patient outcomes.</div></div>","PeriodicalId":13609,"journal":{"name":"Inorganic Chemistry Communications","volume":"171 ","pages":"Article 113592"},"PeriodicalIF":4.4,"publicationDate":"2024-11-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142743115","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-11-20DOI: 10.1016/j.inoche.2024.113598
Longhui Nie, Caihong Fang, Sitian Xin, Yiqiong Yang, Heng Chen, Xingru Chen, Xueling Li
The accumulation of antibiotics (as emerging pollutants) in water will produce adverse impacts on all aquatic living. Herein, the removal of tetracycline hydrochloride (TCH) was investigated on porous Co3O4@N doped C supported on honeycomb ceramics (Co3O4@NC-HC) Fenton-like catalysts. The enrichment of pyridine N, Co3+ surface active sites and oxygen vacancy (VO) in Co3O4@NC-HC favors PMS activation to generate reactive oxygen species (ROS, such as ⋅OH, ⋅SO4−, ⋅O2− radicals and 1O2) for TCH oxidation. The Co3O4@NC-HC catalysts exhibited excellent activity (84 % removal efficiency in the first 5 min at 35 mg L−1 on 1.0Co3O4@NC-HC) and relatively good stability for Fenton-like TCH oxidation with PMS in the dark and a wide pH range (pH = 2–11). The related catalytic mechanism over Co3O4@NC/HC for TCH oxidation was investigated. The results of the toxicity evaluation showed that the toxicity of TCH was significantly reduced after degradation. The features of porous structure and large macroscopic size for Co3O4@NC-HC enable it to have a low fluid resistance and be easily recycled, which promotes its actual application.
{"title":"Effective removal of tetracycline hydrochloride from wastewater over porous Co3O4@NC/honeycomb ceramics by Fenton-like catalysis","authors":"Longhui Nie, Caihong Fang, Sitian Xin, Yiqiong Yang, Heng Chen, Xingru Chen, Xueling Li","doi":"10.1016/j.inoche.2024.113598","DOIUrl":"10.1016/j.inoche.2024.113598","url":null,"abstract":"<div><div>The accumulation of antibiotics (as emerging pollutants) in water will produce adverse impacts on all aquatic living. Herein, the removal of tetracycline hydrochloride (TCH) was investigated on porous Co<sub>3</sub>O<sub>4</sub>@N doped C supported on honeycomb ceramics (Co<sub>3</sub>O<sub>4</sub>@NC-HC) Fenton-like catalysts. The enrichment of pyridine N, Co<sup>3+</sup> surface active sites and oxygen vacancy (V<sub>O</sub>) in Co<sub>3</sub>O<sub>4</sub>@NC-HC favors PMS activation to generate reactive oxygen species (ROS, such as ⋅OH, ⋅SO<sub>4</sub><sup>−</sup>, ⋅O<sub>2</sub><sup>−</sup> radicals and <sup>1</sup>O<sub>2</sub>) for TCH oxidation. The Co<sub>3</sub>O<sub>4</sub>@NC-HC catalysts exhibited excellent activity (84 % removal efficiency in the first 5 min at 35 mg L<sup>−1</sup> on 1.0Co<sub>3</sub>O<sub>4</sub>@NC-HC) and relatively good stability for Fenton-like TCH oxidation with PMS in the dark and a wide pH range (pH = 2–11). The related catalytic mechanism over Co<sub>3</sub>O<sub>4</sub>@NC/HC for TCH oxidation was investigated. The results of the toxicity evaluation showed that the toxicity of TCH was significantly reduced after degradation. The features of porous structure and large macroscopic size for Co<sub>3</sub>O<sub>4</sub>@NC-HC enable it to have a low fluid resistance and be easily recycled, which promotes its actual application.</div></div>","PeriodicalId":13609,"journal":{"name":"Inorganic Chemistry Communications","volume":"171 ","pages":"Article 113598"},"PeriodicalIF":4.4,"publicationDate":"2024-11-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142706290","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-11-20DOI: 10.1016/j.inoche.2024.113602
Xing-Peng Wei, Yu-Ting Yang, Zi-Yi Zheng, Wang-Bo Yuan, Hong-Gang Ni
A minimalist approach to fabricate the synthetic composite Ti/TiO2/BiVO4 was proposed. Concurrently, the photoelectrocatalytic performance and activity of the Ti/TiO2/BiVO4 electrode were evaluated. Specifically, the relationship between composition, morphology, and photocurrent response was initially discussed. Then, the transient photocurrent, linear sweep voltammetry, photoconversion efficiency, and electrochemical impedance spectroscopy were employed to test the photoelectrochemical performance. To evaluate the photoelectrocatalytic activity of this composite electrode, rhodamine B (RhB) degradation under optimized experimental conditions was selected as a typical case study. Compared with other similar electrodes, the present electrode had a short preparation time, excellent photocurrent response, high RhB removal, and high stability. Based on the measurements of trapping experiments, Mott−Schottky spectroscopy (M−S), UV–visible diffuse reflectance spectra (UV–Vis DRS), electron paramagnetic resonance (EPR), and degradation intermediate products, a possible photoelectrocatalytic degradation mechanism of Ti/TiO2/BiVO4 was proposed. According to our results, ·O2− should be the dominant oxidative species. The Z-scheme heterojunction of Ti/TiO2/BiVO4 has a new microstructure with potential in wastewater treatment.
{"title":"A simple preparation method of Ti/TiO2/BiVO4 and implications for enhanced photoelectrocatalytic performance under visible light illumination","authors":"Xing-Peng Wei, Yu-Ting Yang, Zi-Yi Zheng, Wang-Bo Yuan, Hong-Gang Ni","doi":"10.1016/j.inoche.2024.113602","DOIUrl":"10.1016/j.inoche.2024.113602","url":null,"abstract":"<div><div>A minimalist approach to fabricate the synthetic composite Ti/TiO<sub>2</sub>/BiVO<sub>4</sub> was proposed. Concurrently, the photoelectrocatalytic performance and activity of the Ti/TiO<sub>2</sub>/BiVO<sub>4</sub> electrode were evaluated. Specifically, the relationship between composition, morphology, and photocurrent response was initially discussed. Then, the transient photocurrent, linear sweep voltammetry, photoconversion efficiency, and electrochemical impedance spectroscopy were employed to test the photoelectrochemical performance. To evaluate the photoelectrocatalytic activity of this composite electrode, rhodamine B (RhB) degradation under optimized experimental conditions was selected as a typical case study. Compared with other similar electrodes, the present electrode had a short preparation time, excellent photocurrent response, high RhB removal, and high stability. Based on the measurements of trapping experiments, Mott−Schottky spectroscopy (M−S), UV–visible diffuse reflectance spectra (UV–Vis DRS), electron paramagnetic resonance (EPR), and degradation intermediate products, a possible photoelectrocatalytic degradation mechanism of Ti/TiO<sub>2</sub>/BiVO<sub>4</sub> was proposed. According to our results, ·O<sub>2</sub><sup>−</sup> should be the dominant oxidative species. The Z-scheme heterojunction of Ti/TiO<sub>2</sub>/BiVO<sub>4</sub> has a new microstructure with potential in wastewater treatment.</div></div>","PeriodicalId":13609,"journal":{"name":"Inorganic Chemistry Communications","volume":"171 ","pages":"Article 113602"},"PeriodicalIF":4.4,"publicationDate":"2024-11-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142706340","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-11-20DOI: 10.1016/j.inoche.2024.113603
Fatemeh Sadat Seyed Atashi, Felora Heshmatpour
This study investigates the synthesis and application of a TiO2/NiFe2-xCexO4/rGO ternary magnetic nanocomposite as an efficient and recyclable photocatalyst. The nanocomposite was characterized using Fourier-transform infrared(FTIR), X-ray diffraction(XRD), Field emission scanning electron microscopy(FE-SEM), magnetic measurements, UV–Vis diffuse reflectance spectroscopy(DRS), and X-ray photoelectron spectroscopy (XPS). FTIR analysis confirmed the formation of the inverse spinel cubic structure, with significant vibrational bands related to metal–oxygen complexes. XRD patterns showed successful incorporation of Ce3+ ions into the NiFe2O4 lattice, with shifts in diffraction peaks indicating changes in crystallite size and lattice parameters. FE-SEM images revealed a well-dispersed distribution of TiO2 and NiFe2O4 nanoparticles on the reduced graphene oxide (rGO) surface, enhancing the nanocomposite’s structural integrity. Energy dispersive X-ray(EDX) analysis demonstrated the presence of Ti, Ni, Fe, Ce, O, and C elements in the ternary nanocomposite without impurities, confirming the high purity of the material. Magnetic measurements indicated increased magnetization due to Ce3+ doping. DRS revealed optical band gaps (Bg), and XPS provided detailed insights into the surface chemical composition and valence states. XPS analysis confirmed the presence of Ni2+, Fe3+, Ti4+, and Ce3+ ions, and verified the reduction of graphene oxide to rGO. Importantly, the XPS data also indicated a reduction in the binding energy of oxygen species, which suggests effective electron trapping. The photocatalytic performance was assessed by the degradation of methylene blue (MB) under UV and Vis light. The TiO2/NiFe2-xCexO4/rGO nanocomposite demonstrated superior photocatalytic activity with high degradation rates. The enhanced photocatalytic efficiency is attributed to efficient electron trapping, which reduces electron-hole recombination. Furthermore, the nanocomposite showed excellent reusability, maintaining high photocatalytic efficiency over multiple cycles of use, which underscores its potential for practical applications in environmental remediation.
{"title":"TiO2/NiFe2-xCexO4/rGO ternary magnetic nanocomposite as separable and recyclable photocatalyst","authors":"Fatemeh Sadat Seyed Atashi, Felora Heshmatpour","doi":"10.1016/j.inoche.2024.113603","DOIUrl":"10.1016/j.inoche.2024.113603","url":null,"abstract":"<div><div>This study investigates the synthesis and application of a TiO<sub>2</sub>/NiFe<sub>2-x</sub>Ce<sub>x</sub>O<sub>4</sub>/rGO ternary magnetic nanocomposite as an efficient and recyclable photocatalyst. The nanocomposite was characterized using Fourier-transform infrared(FTIR), X-ray diffraction(XRD), Field emission scanning electron microscopy(FE-SEM), magnetic measurements, UV–Vis diffuse reflectance spectroscopy(DRS), and X-ray photoelectron spectroscopy (XPS). FTIR analysis confirmed the formation of the inverse spinel cubic structure, with significant vibrational bands related to metal–oxygen complexes. XRD patterns showed successful incorporation of Ce<sup>3+</sup> ions into the NiFe<sub>2</sub>O<sub>4</sub> lattice, with shifts in diffraction peaks indicating changes in crystallite size and lattice parameters. FE-SEM images revealed a well-dispersed distribution of TiO<sub>2</sub> and NiFe<sub>2</sub>O<sub>4</sub> nanoparticles on the reduced graphene oxide (rGO) surface, enhancing the nanocomposite’s structural integrity. Energy dispersive X-ray(EDX) analysis demonstrated the presence of Ti, Ni, Fe, Ce, O, and C elements in the ternary nanocomposite without impurities, confirming the high purity of the material. Magnetic measurements indicated increased magnetization due to Ce<sup>3+</sup> doping. DRS revealed optical band gaps (Bg), and XPS provided detailed insights into the surface chemical composition and valence states. XPS analysis confirmed the presence of Ni<sup>2+</sup>, Fe<sup>3+</sup>, Ti<sup>4+</sup>, and Ce<sup>3+</sup> ions, and verified the reduction of graphene oxide to rGO. Importantly, the XPS data also indicated a reduction in the binding energy of oxygen species, which suggests effective electron trapping. The photocatalytic performance was assessed by the degradation of methylene blue (MB) under UV and Vis light. The TiO<sub>2</sub>/NiFe<sub>2-x</sub>Ce<sub>x</sub>O<sub>4</sub>/rGO nanocomposite demonstrated superior photocatalytic activity with high degradation rates. The enhanced photocatalytic efficiency is attributed to efficient electron trapping, which reduces electron-hole recombination. Furthermore, the nanocomposite showed excellent reusability, maintaining high photocatalytic efficiency over multiple cycles of use, which underscores its potential for practical applications in environmental remediation.</div></div>","PeriodicalId":13609,"journal":{"name":"Inorganic Chemistry Communications","volume":"171 ","pages":"Article 113603"},"PeriodicalIF":4.4,"publicationDate":"2024-11-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142707352","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-11-20DOI: 10.1016/j.inoche.2024.113574
S.M. Abu Nayem , Yuda Prima Hardianto , Abubakar Dahiru Shuaibu , Syed Shaheen Shah , Santa Islam , Mohammad Abu Jafar Mazumder , Md. Abdul Aziz , A.J. Saleh Ahammad
Iron-nickel layered double hydroxides (FeNi LDHs) are attractive alternatives to precious metals for sustainable and cost-effective oxygen evolution reaction catalysts due to their availability, environmental friendliness, and high catalytic potential. This work hydrothermally synthesizes a highly effective FeNi LDH electrocatalyst using amino acids derived from biomass as morphology-directing agents. Amino acids helped produce sheet-like nanostructures, improve electrostatic interactions in LDH layers, and optimize electrocatalytic characteristics. The resulting FeNi LDH nanosheets exhibited remarkable OER performance, achieving an overpotential of 324 mV at 10 mA cm−2 and a Tafel slope of 100 mV dec−1. Additionally, the catalyst demonstrated excellent stability, maintaining high performance for over 10 h of continuous operation in a 1 M KOH electrolyte. These results underscore the potential of amino-acid-assisted FeNi LDHs as scalable and effective electrocatalysts for water splitting and clean energy applications, offering a promising avenue toward developing sustainable energy technologies.
铁镍层状双氢氧化物（FeNi LDHs）因其可获得性、环境友好性和高催化潜能而成为贵金属的替代品，可用于可持续且具有成本效益的氧进化反应催化剂。本研究以生物质中提取的氨基酸为形态引导剂，通过水热法合成了一种高效的铁镍 LDH 电催化剂。氨基酸有助于产生片状纳米结构，改善 LDH 层中的静电相互作用，并优化电催化特性。所制备的铁镍 LDH 纳米片表现出卓越的 OER 性能，在 10 mA cm-2 条件下过电位为 324 mV，Tafel 斜率为 100 mV dec-1。此外，该催化剂还表现出卓越的稳定性，在 1 M KOH 电解液中连续工作 10 小时以上仍能保持高性能。这些结果凸显了氨基酸辅助的 FeNi LDHs 作为可扩展的高效电催化剂在水分离和清洁能源应用方面的潜力，为开发可持续能源技术提供了一条前景广阔的途径。
{"title":"Biomass derived amino acid assisted synthesis of FeNi layered double hydroxide for efficient oxygen evolution reaction","authors":"S.M. Abu Nayem , Yuda Prima Hardianto , Abubakar Dahiru Shuaibu , Syed Shaheen Shah , Santa Islam , Mohammad Abu Jafar Mazumder , Md. Abdul Aziz , A.J. Saleh Ahammad","doi":"10.1016/j.inoche.2024.113574","DOIUrl":"10.1016/j.inoche.2024.113574","url":null,"abstract":"<div><div>Iron-nickel layered double hydroxides (FeNi LDHs) are attractive alternatives to precious metals for sustainable and cost-effective oxygen evolution reaction catalysts due to their availability, environmental friendliness, and high catalytic potential. This work hydrothermally synthesizes a highly effective FeNi LDH electrocatalyst using amino acids derived from biomass as morphology-directing agents. Amino acids helped produce sheet-like nanostructures, improve electrostatic interactions in LDH layers, and optimize electrocatalytic characteristics. The resulting FeNi LDH nanosheets exhibited remarkable OER performance, achieving an overpotential of 324 mV at 10 mA cm<sup>−2</sup> and a Tafel slope of 100 mV dec<sup>−1</sup>. Additionally, the catalyst demonstrated excellent stability, maintaining high performance for over 10 h of continuous operation in a 1 M KOH electrolyte. These results underscore the potential of amino-acid-assisted FeNi LDHs as scalable and effective electrocatalysts for water splitting and clean energy applications, offering a promising avenue toward developing sustainable energy technologies.</div></div>","PeriodicalId":13609,"journal":{"name":"Inorganic Chemistry Communications","volume":"171 ","pages":"Article 113574"},"PeriodicalIF":4.4,"publicationDate":"2024-11-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142722755","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Alzheimer’s disease (AD) is a progressive neurodegenerative disorder marked by cognitive decline, memory loss, and behavioral instability. As the global population ages, the prevalence of AD is projected to triple by 2050, highlighting the urgent requirement for effective therapeutics. The blood–brain barrier (BBB) presents a significant challenge in the treatment of AD, as it restricts the delivery of therapeutic agents to the brain.
Advancements in nanotechnology present promising solutions to these challenges. Metallic nanoparticles (MNPs) have been precisely engineered to enhance the delivery of brain-targeted drugs, improving efficacy, safety, stability, and bioavailability. MNPs such as gold, selenium, and ruthenium, with their high surface area-to-volume ratio and multivalency, can cross the BBB, transport therapeutic agents straight to the brain, and reduce oxidative stress, which is critical in AD progression. However, conventional MNP synthesis methods are costly and use toxic chemicals, limiting their application. In contrast, green synthesis with plant extracts provides an eco-friendly and biocompatible alternative. Green-synthesized MNPs, like zinc oxide, silver, and gold, offer the same benefits as traditional MNPs but with improved safety and reduced environmental impact, making them promising for crossing the BBB and enhancing AD treatment.
This review explores the challenges of conventional drug delivery methods for brain-targeted therapies, emphasizing the use of MNPs to overcome these barriers. Unlike prior research, which has primarily focused on chemically synthesized MNPs, this review highlights the innovative use of plant-based MNPs as a more sustainable and biocompatible option for AD treatment. By examining recent developments, it investigates the potential of green-synthesized MNPs to effectively cross the BBB, offering a more eco-friendly and efficient approach to AD therapy. The review also discusses toxicity and safety issues, providing a thorough evaluation of the emerging role of green-synthesized MNPs in brain-targeted drug delivery, a field that remains relatively underexplored in recent studies.
{"title":"Innovative strategies for overcoming blood-brain barrier challenges in Alzheimer’s disease: A focus on green-synthesized metallic nanoparticles","authors":"Kushagra Nagori , Kartik T. Nakhate , Krishna Yadav , Amrita Thakur , Ajazuddin , Madhulika Pradhan","doi":"10.1016/j.inoche.2024.113604","DOIUrl":"10.1016/j.inoche.2024.113604","url":null,"abstract":"<div><div>Alzheimer’s disease (AD) is a progressive neurodegenerative disorder marked by cognitive decline, memory loss, and behavioral instability. As the global population ages, the prevalence of AD is projected to triple by 2050, highlighting the urgent requirement for effective therapeutics. The blood–brain barrier (BBB) presents a significant challenge in the treatment of AD, as it restricts the delivery of therapeutic agents to the brain.</div><div>Advancements in nanotechnology present promising solutions to these challenges. Metallic nanoparticles (MNPs) have been precisely engineered to enhance the delivery of brain-targeted drugs, improving efficacy, safety, stability, and bioavailability. MNPs such as gold, selenium, and ruthenium, with their high surface area-to-volume ratio and multivalency, can cross the BBB, transport therapeutic agents straight to the brain, and reduce oxidative stress, which is critical in AD progression. However, conventional MNP synthesis methods are costly and use toxic chemicals, limiting their application. In contrast, green synthesis with plant extracts provides an eco-friendly and biocompatible alternative. Green-synthesized MNPs, like zinc oxide, silver, and gold, offer the same benefits as traditional MNPs but with improved safety and reduced environmental impact, making them promising for crossing the BBB and enhancing AD treatment.</div><div>This review explores the challenges of conventional drug delivery methods for brain-targeted therapies, emphasizing the use of MNPs to overcome these barriers. Unlike prior research, which has primarily focused on chemically synthesized MNPs, this review highlights the innovative use of plant-based MNPs as a more sustainable and biocompatible option for AD treatment. By examining recent developments, it investigates the potential of green-synthesized MNPs to effectively cross the BBB, offering a more eco-friendly and efficient approach to AD therapy. The review also discusses toxicity and safety issues, providing a thorough evaluation of the emerging role of green-synthesized MNPs in brain-targeted drug delivery, a field that remains relatively underexplored in recent studies.</div></div>","PeriodicalId":13609,"journal":{"name":"Inorganic Chemistry Communications","volume":"171 ","pages":"Article 113604"},"PeriodicalIF":4.4,"publicationDate":"2024-11-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142743532","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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