JCIS open最新文献_第2页

Porous hard carbon derived from coconut biomass waste as electrode material for supercapacitor 从椰子生物质废料中提取多孔硬碳作为超级电容器电极材料

JCIS open Pub Date : 2025-08-20 DOI: 10.1016/j.jciso.2025.100147

Muhammadin Hamid , Indri Dayana , Habib Satria , Dadan Ramdan , Junaidi , Muhammad Fadlan Siregar , Dewi Sholeha , Juliaster Marbun , Hadi Wijoyo

{"title":"Porous hard carbon derived from coconut biomass waste as electrode material for supercapacitor","authors":"Muhammadin Hamid , Indri Dayana , Habib Satria , Dadan Ramdan , Junaidi , Muhammad Fadlan Siregar , Dewi Sholeha , Juliaster Marbun , Hadi Wijoyo","doi":"10.1016/j.jciso.2025.100147","DOIUrl":"10.1016/j.jciso.2025.100147","url":null,"abstract":"<div><div>The synthesis of porous hard carbon from coconut biomass waste using physical activation through pyrolysis and chemical activation with orange juice as an organic activator at varying temperatures, including 500 °C, 600 °C, and 700 °C, has been carried out. The purpose of this research is to develop materials for faradaic-type supercapacitor electrodes based on these temperature variations. Characterization and testing methods used include X-ray diffraction (XRD), scanning electron microscopy (SEM), Brunauer-Emmett-Teller (BET), cyclic voltammetry (CV), and electrochemical impedance spectroscopy (EIS). BET analysis showed that the PHC-700 sample exhibited a relatively high specific surface area with porous characteristics and a narrow pore size distribution around 17–18 nm. The PHC-700 sample also exhibited the best electrochemical performance with a specific capacitance of 485.23 F/g and a total resistance of 24.29 Ω. GCD measurements revealed stable triangular curves, indicating good charge-discharge reversibility and confirming the superior capacitive behavior of PHC-700. The study confirmed that the higher the temperature used, the better the supercapacitor electrode obtained. This is evidenced by the pores on the surface that help improve the quality of the electrode and the XRD test results which are directly proportional to the increase in temperature. It is hoped that this research can enhance understanding of supercapacitor electrode applications.</div></div>","PeriodicalId":73541,"journal":{"name":"JCIS open","volume":"19 ","pages":"Article 100147"},"PeriodicalIF":0.0,"publicationDate":"2025-08-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144890911","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}

引用次数: 0

Biogenic CuO-ZnO nanocomposites synthesized from Jatropha curcas for methylene blue dye degradation 麻疯树制备降解亚甲基蓝染料的CuO-ZnO纳米复合材料

JCIS open Pub Date : 2025-08-13 DOI: 10.1016/j.jciso.2025.100146

Yojana Sharma , Vikas Anand , Vikas Dhiman , Pawan Heera

{"title":"Biogenic CuO-ZnO nanocomposites synthesized from Jatropha curcas for methylene blue dye degradation","authors":"Yojana Sharma , Vikas Anand , Vikas Dhiman , Pawan Heera","doi":"10.1016/j.jciso.2025.100146","DOIUrl":"10.1016/j.jciso.2025.100146","url":null,"abstract":"<div><div>The growing demand for sustainable nanomaterial synthesis has driven the development of green, bio-mediated approaches. In this study, CuO-ZnO nanocomposites (Cu<sub>x</sub>Zn<sub>1−x</sub>O; x = 0, 0.025, 0.05, 0.075, and 0.1) were synthesized via a phytochemical using the latex of <em>Jatropha curcas</em> an underexplored natural source as a <em>reducing, capping,</em> and <em>stabilizing agent</em>. This eco-friendly, latex-assisted approach avoids toxic chemicals and harsh synthesis conditions, making it fully compliant with green chemistry principles. The synthesized nanocomposites were systematically characterized to assess their structural and physicochemical properties. X-ray diffraction (XRD) confirmed the formation of a predominant hexagonal wurtzite ZnO phase with a secondary monoclinic CuO phase. Field emission scanning electron microscopy (FE-SEM) revealed quasi-spherical nanoparticles with well-defined facets, while energy-dispersive X-ray spectroscopy (EDS) verified the successful incorporation of Cu and Zn. Zeta potential analysis, UV–Visible spectroscopy, and FT-IR spectroscopy provided further insights into colloidal stability, optical properties and surface functionalities respectively. Among the synthesized materials, Cu<sub>0.05</sub>Zn<sub>0.95</sub>O exhibited the highest photocatalytic activity, achieving 88.7 % degradation of methylene blue with a kinetic rate constant of 0.01831 min<sup>−1</sup>. Reusability tests and scavenger studies confirmed the catalyst's durability and mechanistic reliability. To the best of our knowledge, there are very few or no reports employing <em>Jatropha curcas</em> latex for Cu-doped ZnO synthesis, particularly targeting photocatalytic applications, thereby demonstrating a novel eco-friendly pathway. Overall, this work demonstrates the efficacy of Jatropha-assisted green synthesis for producing stable and efficient CuO-ZnO nanocomposites, offering a promising solution for the photocatalytic treatment of dye-contaminated wastewater.</div></div>","PeriodicalId":73541,"journal":{"name":"JCIS open","volume":"19 ","pages":"Article 100146"},"PeriodicalIF":0.0,"publicationDate":"2025-08-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144853025","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}

引用次数: 0

Encapsulation of Mucuna pruriens seed extract using nanocellulose and its evaluation for Parkinson's treatment 纳米纤维素包封麻瓜籽提取物及其对帕金森病治疗效果的评价

JCIS open Pub Date : 2025-07-21 DOI: 10.1016/j.jciso.2025.100144

Ratnaningsih Eko Sardjono , Ramdhan Gunawan , Asep Kadarohman , Budiman Anwar , Hamidie Ronald Daniel Ray , Suci Nur Vikasari , Erdiwansyah , Siti Fatimah , Young Gun Ko

{"title":"Encapsulation of Mucuna pruriens seed extract using nanocellulose and its evaluation for Parkinson's treatment","authors":"Ratnaningsih Eko Sardjono , Ramdhan Gunawan , Asep Kadarohman , Budiman Anwar , Hamidie Ronald Daniel Ray , Suci Nur Vikasari , Erdiwansyah , Siti Fatimah , Young Gun Ko","doi":"10.1016/j.jciso.2025.100144","DOIUrl":"10.1016/j.jciso.2025.100144","url":null,"abstract":"<div><div><em>Mucuna pruriens</em> (MP), a natural source of L-DOPA, holds potential as a Parkinson's disease (PD) treatment. This study developed two encapsulation systems for MP using nanocellulose (NC-MP) and nanocellulose-chitosan-tripolyphosphate (NCT-MP) to enhance therapeutic efficacy. The encapsulation process was performed via ultrasonication and characterized by FTIR, SEM, and TEM, revealing polydisperse spherical particles with sizes of 566.37 ± 37.41 nm (NC-MP) and 756.66 ± 51.44 nm (NCT-MP). The anti-parkinsonian effects were evaluated in a catalepsy-induced mouse model using the horizontal bar test. Both encapsulated systems significantly reduced catalepsy duration (∗p∗ < 0.001). NC-MP demonstrated superior efficacy at low doses (5–20 mg/kg), attributed to its smaller particle size and neutral charge, which may facilitate blood-brain barrier penetration. In contrast, NCT-MP showed enhanced effects at 25 mg/kg, likely due to chitosan's cationic charge promoting active transport and tripolyphosphate-mediated matrix stabilization. These findings highlight the potential of encapsulation systems to optimize MP's therapeutic profile, with formulation efficacy dependent on dosage requirements.</div></div>","PeriodicalId":73541,"journal":{"name":"JCIS open","volume":"19 ","pages":"Article 100144"},"PeriodicalIF":0.0,"publicationDate":"2025-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144704053","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}

引用次数: 0

From surface design to cellular Response: Insights into aryl-functionalized iron oxide nanoparticles with and without protein corona 从表面设计到细胞反应：有或没有蛋白冠的芳基功能化氧化铁纳米颗粒的见解

JCIS open Pub Date : 2025-07-17 DOI: 10.1016/j.jciso.2025.100143

Solange Mailen Selzer , Laura Vanesa Bonnet , María Belén Piccoli , Santiago Daniel Salas , Mauricio Galiano , Raquel Viviana Vico , Nancy Fabiana Ferreyra

{"title":"From surface design to cellular Response: Insights into aryl-functionalized iron oxide nanoparticles with and without protein corona","authors":"Solange Mailen Selzer , Laura Vanesa Bonnet , María Belén Piccoli , Santiago Daniel Salas , Mauricio Galiano , Raquel Viviana Vico , Nancy Fabiana Ferreyra","doi":"10.1016/j.jciso.2025.100143","DOIUrl":"10.1016/j.jciso.2025.100143","url":null,"abstract":"<div><div>Iron oxide magnetic nanoparticles (IONPs) are widely utilized in biomedical and industrial applications due to their unique properties, including biocompatibility, superparamagnetism, and ease of functionalization. However, their behavior in biological environments is heavily influenced by surface functionalization and the formation of the protein corona. This study investigates the impact of aryl-functionalization of iron oxide nanoparticles with carboxylic and amine groups on colloidal stability, protein corona formation, and biological interactions. The IONPs were synthesized and characterized for their physicochemical properties, including size, zeta potential, magnetic properties, and dispersibility in different media. The interaction of the nanoparticles with dipalmitoylphosphatidylcholine monolayers, as a model membrane, was evaluated. Cytotoxicity and autophagy induction were assessed in Chinese hamster ovary (CHO-K1) and cervical cancer (HeLa) cells, respectively. The results demonstrate that surface functionalization significantly alters protein corona composition, which in turn modulates nanoparticle stability, cellular uptake, and biological responses. The aryl-functionalized nanoparticles exhibited reduced interactions with cell membranes compared to unfunctionalized counterparts, and also lower autophagy induction, emphasizing the importance of surface design in minimizing adverse effects.</div></div>","PeriodicalId":73541,"journal":{"name":"JCIS open","volume":"19 ","pages":"Article 100143"},"PeriodicalIF":0.0,"publicationDate":"2025-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144672143","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}

引用次数: 0

Enhanced biomedical performance of magnetic Fe3O4@chitosan nanocomposites: A comparative study of synthesis methods for hyperthermia and chemotherapy applications 磁性Fe3O4@chitosan纳米复合材料增强生物医学性能：热疗和化疗应用合成方法的比较研究

JCIS open Pub Date : 2025-05-30 DOI: 10.1016/j.jciso.2025.100142

Ahmed F. Aman , Omayma A. Ghazy , Hoda Saleh , Ismaiel A. Ali , Neamat H. Ahmed , Sameh A. Rizk , Zakaria I. Ali

{"title":"Enhanced biomedical performance of magnetic Fe3O4@chitosan nanocomposites: A comparative study of synthesis methods for hyperthermia and chemotherapy applications","authors":"Ahmed F. Aman , Omayma A. Ghazy , Hoda Saleh , Ismaiel A. Ali , Neamat H. Ahmed , Sameh A. Rizk , Zakaria I. Ali","doi":"10.1016/j.jciso.2025.100142","DOIUrl":"10.1016/j.jciso.2025.100142","url":null,"abstract":"<div><div>This study investigates the synthesis of magnetite/chitosan nanocomposites (Fe<sub>3</sub>O<sub>4</sub>@CS) using <em>in-situ</em> and <em>ex-situ</em> methods. The nanocomposites were characterized by FTIR, XRD, TEM, and VSM analyses. Their potential in nanomedicine was assessed through chemosensitivity tests on Ehrlich ascites carcinoma (EAC) and hyperthermic performance under an alternating magnetic field. The particle size of Fe<sub>3</sub>O<sub>4</sub> nanoparticles was 10–20 nm and 20–40 nm for <em>in-situ</em> and <em>ex-situ</em> prepared samples as revealed by TEM images. FTIR indicated strong interactions between magnetite and chitosan, while XRD revealed a more uniform crystalline structure of Fe<sub>3</sub>O<sub>4</sub> nanoparticles in <em>ex-situ</em> prepared samples. VSM analysis showed higher magnetization saturation for the <em>ex-situ</em> samples, with magnetization decreasing as chitosan content increased. <em>In vitro</em> assays demonstrated that both synthesis routes influenced the cytotoxicity of the nanocomposites against EAC cells, with <em>in-situ</em> samples showing greater early-stage cytotoxicity causing 40 % reduction in cell viability at 10 μg/mL. Under an alternating magnetic field, Fe<sub>3</sub>O<sub>4</sub>@CS nanocomposites reached therapeutic hyperthermia temperatures, with <em>in-situ</em> samples achieving 40.1–41.4 °C and <em>ex-situ</em> samples reaching 41–43 °C. These results highlight the importance of synthesis method and chitosan content in tailoring Fe<sub>3</sub>O<sub>4</sub>@CS nanocomposites for efficient and targeted hyperthermia-based cancer treatment.</div></div>","PeriodicalId":73541,"journal":{"name":"JCIS open","volume":"19 ","pages":"Article 100142"},"PeriodicalIF":0.0,"publicationDate":"2025-05-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144231275","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}

引用次数: 0

A clear-cut synthesis of silver nanoparticles using glycerol as a multipurpose medium toward catalytic hydrogenation and antibacterial 用甘油作为催化加氢和抗菌的多用途介质合成纳米银

JCIS open Pub Date : 2025-05-27 DOI: 10.1016/j.jciso.2025.100141

Van-Hoa Nguyen , Hoa-Hung Lam , Minh-Tam K. Nguyen , Thi-An-Sa Do , Hong-Phuong Phan , Trung Dang-Bao

{"title":"A clear-cut synthesis of silver nanoparticles using glycerol as a multipurpose medium toward catalytic hydrogenation and antibacterial","authors":"Van-Hoa Nguyen , Hoa-Hung Lam , Minh-Tam K. Nguyen , Thi-An-Sa Do , Hong-Phuong Phan , Trung Dang-Bao","doi":"10.1016/j.jciso.2025.100141","DOIUrl":"10.1016/j.jciso.2025.100141","url":null,"abstract":"<div><div>Adapting for a green and safe protocol, this work developed a straightforward polyol method for synthesizing spherical silver nanoparticles (AgNPs), with a median size of 12.2 nm in glycerol at a low temperature (60 °C). The multipurpose nature of glycerol, acting as both a reductant and an immobilizer, was explored, demonstrating the long-term stability of AgNPs in the resulting colloidal solution. The stability of AgNPs in glycerol was also contrasted with their stability in water and other polyols. The multiple applications of AgNPs in glycerol included their use as antibacterial agents (against both <em>E. coli</em> and <em>S. aureus</em> strains) and as an eco-friendly catalyst. At room temperature, the selective hydrogenation of 4-nitrophenol (4-NP) to 4-aminophenol (4-AP) obeyed a pseudo first-order kinetic model, exhibiting a rate constant of 0.1064 min<sup>−1</sup>. The kinetic and thermodynamic results confirmed that the rate-determining step involved an electron-transfer process from adsorbed hydrogen to 4-nitrophenolate on the AgNPs surface. Utilizing glycerol as a non-toxic solvent, this colloidal AgNPs solution can be easily stored and directly used without any additional purification.</div></div>","PeriodicalId":73541,"journal":{"name":"JCIS open","volume":"19 ","pages":"Article 100141"},"PeriodicalIF":0.0,"publicationDate":"2025-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144170380","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}

引用次数: 0

Colloidal structure, energy extensivity and Monte Carlo sampling properties of improved short-range interaction models for surfactant-coated magnetic nanoparticles 表面活性剂包覆磁性纳米颗粒改进的短程相互作用模型的胶体结构、能量延展性和蒙特卡罗采样特性

JCIS open Pub Date : 2025-05-13 DOI: 10.1016/j.jciso.2025.100138

Aimê Gomes da Mata Kanzaki , Tiago de Sousa Araújo Cassiano , João Valeriano , Fabio Luis de Oliveira Paula , Leonardo Luiz e Castro

{"title":"Colloidal structure, energy extensivity and Monte Carlo sampling properties of improved short-range interaction models for surfactant-coated magnetic nanoparticles","authors":"Aimê Gomes da Mata Kanzaki , Tiago de Sousa Araújo Cassiano , João Valeriano , Fabio Luis de Oliveira Paula , Leonardo Luiz e Castro","doi":"10.1016/j.jciso.2025.100138","DOIUrl":"10.1016/j.jciso.2025.100138","url":null,"abstract":"<div><div>The standard DLVO theory offers a limited description of ionic-surfacted magnetic colloids in near aggregation regimes. Correcting the electrical double layer term for ionic surfactants is not enough to successfully simulate the systems. The correction of the van der Waals energy divergence at short interparticle distances is fundamental for proper Monte Carlo sampling of nanoparticles’ configurations. We compare different short-range interaction models and show that a more detailed model leads to Monte Carlo simulations that better match theoretical expectations. Studying the energy scaling with the number of particles, we observe a slight deviation from energy extensivity across all models, small but still detectable via Akaike’s information criterion. The more detailed model predicts a strong effect of particle-size dispersity on the transition between overall attraction and repulsion. More precise modeling can significantly affect numerical predictions, in particular, the effect of particle-size dispersity on the spatial structure of colloids with high volume fraction. This emphasizes the importance of nailing down better models for describing complex colloidal dispersions.</div></div>","PeriodicalId":73541,"journal":{"name":"JCIS open","volume":"18 ","pages":"Article 100138"},"PeriodicalIF":0.0,"publicationDate":"2025-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144098467","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}

引用次数: 0

Green approach to La2O3/ZnO nanocomposites synthesis via Jatropha curcas latex: Implications in photocatalysis 利用麻疯树乳胶合成La2O3/ZnO纳米复合材料的绿色途径：在光催化中的意义

JCIS open Pub Date : 2025-05-05 DOI: 10.1016/j.jciso.2025.100140

Amit Sharma, Sahil Singh, Khyati Sharma, Kamal Thakur, Khushbu Choudhary, Aastha Patial, Tamana, Vikas Dhiman

{"title":"Green approach to La2O3/ZnO nanocomposites synthesis via Jatropha curcas latex: Implications in photocatalysis","authors":"Amit Sharma, Sahil Singh, Khyati Sharma, Kamal Thakur, Khushbu Choudhary, Aastha Patial, Tamana, Vikas Dhiman","doi":"10.1016/j.jciso.2025.100140","DOIUrl":"10.1016/j.jciso.2025.100140","url":null,"abstract":"<div><div>This study presents a comprehensive investigation into the synthesis of zinc oxide (ZnO) nanoparticles and lanthanum oxide (La<sub>2</sub>O<sub>3</sub>)/ZnO nanocomposites using Jatropha curcas latex, emphasizing a sustainable green chemistry methodology. Characterization techniques, including X-ray diffraction (XRD), photoluminescence (PL) spectroscopy, scanning electron microscopy (SEM), and zeta sizer analysis, were employed to elucidate the crystalline structure, optical properties, morphology, and stability of the synthesized materials. The photocatalytic efficacy of the synthesized nanomaterials was rigorously evaluated for the solar-driven photocatalytic removal of methylene blue (MB) dye. Through systematic optimization, an optimal dosage of 3 mg/mL for the La<sub>2</sub>O<sub>3</sub>/ZnO nanocomposite was identified, demonstrating a significant enhancement in degradation efficiency over ZnO nanoparticles. Under these optimized conditions, the La<sub>2</sub>O<sub>3</sub>/ZnO catalyst achieved up to 87.71 % removal of MB (initial concentration of 10 mg/L in 100 mL) within 120 min of exposure to natural sunlight. Additionally, under UV irradiation, the MB solution exhibited an exceptional 95.16 % photodegradation, with an estimated rate constant of 0.03224 min<sup>−1</sup> after 90 min of treatment with the La<sub>2</sub>O<sub>3</sub>/ZnO nanocomposite. To further assess the performance and applicability of the photocatalysts, recyclability studies, scavenger studies, and hot filtration tests were conducted, confirming the potential of eco-friendly La<sub>2</sub>O<sub>3</sub>/ZnO nanocomposites as effective agents for sustainable environmental remediation strategies. This research not only advances the field of photocatalysis but also contributes to the development of sustainable materials for pollution mitigation.</div></div>","PeriodicalId":73541,"journal":{"name":"JCIS open","volume":"18 ","pages":"Article 100140"},"PeriodicalIF":0.0,"publicationDate":"2025-05-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143916615","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}

引用次数: 0

Enhanced corrosion resistance of aluminum 6061 alloy using Ti-based thin films and plasma nitriding 采用ti基薄膜和等离子渗氮增强6061铝合金的耐蚀性

JCIS open Pub Date : 2025-04-28 DOI: 10.1016/j.jciso.2025.100139

Margono , Djarot B. Darmadi , Femiana Gapsari , Teguh Dwi Widodo , Bayu Mahdi Kartika

引用次数: 0

Selective flotation of carbonate minerals 碳酸盐矿物的选择性浮选

JCIS open Pub Date : 2025-04-24 DOI: 10.1016/j.jciso.2025.100137

Manas Barai , Tanmay Dutta , Anuttam Patra

{"title":"Selective flotation of carbonate minerals","authors":"Manas Barai , Tanmay Dutta , Anuttam Patra","doi":"10.1016/j.jciso.2025.100137","DOIUrl":"10.1016/j.jciso.2025.100137","url":null,"abstract":"<div><div>This study explores the selective flotation of carbonate minerals-dolomite, magnesite, and calcite using amino acid-based single- and double-headed collectors. The separation efficiency was evaluated using microflotation experiments, ζ potential measurements, UV–Vis spectroscopy, FTIR spectroscopy, and molecular modelling. The study aimed to understand how the molecular architecture of collectors influences their adsorption behaviour on mineral surfaces, leading to selective flotation.</div><div>Flotation recoveries were measured at both natural and pH 10.5 conditions. The monocarboxylate collector (C<sub>12</sub>GlyNa) demonstrated high but non-selective recovery across all three minerals. In contrast, the double-headed collector, disodium <em>N</em>-dodecyl aminomalonate (C<sub>12</sub>MalNa<sub>2</sub>), exhibited strong selectivity, particularly for magnesite, due to optimal geometric matching between its head groups and the Mg-Mg atomic distances on the mineral surface. The amount of collector adsorbed was determined by UV–Vis analysis, while FTIR confirmed surface adsorption through characteristic alkyl stretching bands. ζ potential measurements supported these findings, showing that increased adsorption led to greater negative charge development on mineral surfaces. Molecular modelling further revealed that selective adsorption occurs when the collector's head group spacing aligns with metal-metal distances on the mineral surface, enabling effective electrostatic interactions.</div><div>These results highlight the potential for designing tailored collectors based on molecular recognition principles, offering a pathway for more efficient and selective flotation of carbonate minerals.</div></div>","PeriodicalId":73541,"journal":{"name":"JCIS open","volume":"18 ","pages":"Article 100137"},"PeriodicalIF":0.0,"publicationDate":"2025-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143894967","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}

引用次数: 0