ChemistrySelect最新文献_第5页

Photodegradation of Azo and Hydrazone Colourants on Cellulose-Based Materials: A Mass Spectrometric Screening 偶氮和腙着色剂在纤维素基材料上的光降解：质谱筛选

IF 2.3 4区化学

ChemistrySelect Pub Date : 2026-09-23 DOI: 10.1002/slct.74389

Adele Ferretti, Tommaso Nacci, Ilaria Degano

{"title":"Photodegradation of Azo and Hydrazone Colourants on Cellulose-Based Materials: A Mass Spectrometric Screening","authors":"Adele Ferretti, Tommaso Nacci, Ilaria Degano","doi":"10.1002/slct.74389","DOIUrl":"https://doi.org/10.1002/slct.74389","url":null,"abstract":"The preservation of coloured paper objects poses significant challenges to heritage science, as both cellulose-based supports and organic pigments are extremely unstable. In particular, azo dyes and hydrazone pigments remain comparatively under-investigated in degradation studies. In this work, Metanil Yellow (AY36), Orange II (AO7), and Amido Naphthol Red G (AR1) were selected to investigate the behaviour of β-naphthol, substituted β-naphthol, and diphenylamine azo dyes. Standard dyes cast on paper mock-ups were used as simplified model systems to evaluate possible differences in their behaviour upon light exposure through colourimetry, and to determine candidate molecular markers for identifying dyes in historical and severely degraded samples by chromatographic and mass spectrometric analysis. After 233 days of natural light exposure, substantial colour variations were observed (ΔE > 25), together with a 10%–20% decrease in the chromatographic peak areas of the parent dyes. Unreported degradation markers were detected and tentatively characterised, allowing us to hypothesise different photodegradation pathways involving oxidation, formaldehyde addition, azo bond cleavage, and phenylation. Although most of these degradation mechanisms have been reported in solution under strongly oxidative conditions, this work provides the first evidence of their occurrence in paper mock-ups. Some degradation products were also detected in a 20th century stage costume thread.","PeriodicalId":146,"journal":{"name":"ChemistrySelect","volume":"11 37","pages":""},"PeriodicalIF":2.3,"publicationDate":"2026-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/slct.74389","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149014658","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Temperature-Controlled Synthesis of Fe-Based Graphite Nanocomposites for Sustainable Photocatalysis and Electrocatalysis Application 铁基石墨纳米复合材料在可持续光催化和电催化中的应用

IF 2.3 4区化学

ChemistrySelect Pub Date : 2026-09-23 DOI: 10.1002/slct.74436

Mohamed S. Mahmoud, Ilyes Jedidi, Sulaiman Al Isaee, Mohamed Mihoub, Nasser A. M. Barakat

{"title":"Temperature-Controlled Synthesis of Fe-Based Graphite Nanocomposites for Sustainable Photocatalysis and Electrocatalysis Application","authors":"Mohamed S. Mahmoud, Ilyes Jedidi, Sulaiman Al Isaee, Mohamed Mihoub, Nasser A. M. Barakat","doi":"10.1002/slct.74436","DOIUrl":"https://doi.org/10.1002/slct.74436","url":null,"abstract":"<div>\u0000 \u0000 This study reports the temperature-controlled synthesis of iron-based graphite nanocomposites prepared via a sol–gel route followed by electro-spraying and evaluates their photocatalytic and electrocatalytic performance. At a calcination temperature of 750°C, the material consisted mainly of hematite (α-Fe2O3) nanoparticles dispersed in an amorphous carbon matrix. Owing to its semiconducting nature and low conductivity, this sample exhibited limited photocatalytic activity toward methylene blue degradation and weak electrocatalytic behavior for glycerol, methanol, and urea oxidation. Increasing the synthesis temperature to 850°C induced carbothermal reduction of Fe2O3, yielding zero-valent iron (Fe0) nanoparticles embedded in a semi-graphitized carbon framework. This Fe0-rich composite showed significantly enhanced photocatalytic hydrogen evolution, particularly at higher methanol concentrations, and superior electrocatalytic performance with higher current densities and lower onset potentials. The improved activity is attributed to enhanced electrical conductivity, abundant active metallic sites, and synergistic effect between Fe0 and graphitic carbon, offering clear advantages over conventional Ni-based electrocatalysts.\u0000 </div>","PeriodicalId":146,"journal":{"name":"ChemistrySelect","volume":"11 37","pages":""},"PeriodicalIF":2.3,"publicationDate":"2026-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149014659","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

Design, Synthesis and Biological Profiling of Fe(III)–Bipyridine Schiff Base Complexes: Experimental, Computational and Pharmacokinetic Insights 铁(III) -联吡啶席夫碱配合物的设计、合成和生物学分析：实验、计算和药代动力学见解

IF 2.3 4区化学

ChemistrySelect Pub Date : 2026-09-23 DOI: 10.1002/slct.74570

Swaila Bano, Saniya Firdaus, Sujeet Yadav, Farha Arshi, Saurabh Kumar, Monisha Banerjee, Harshita Gaurav, Amritesh C. Shukla, Anushka Bari, Sudheer K. Singh, Ashok K. Singh

{"title":"Design, Synthesis and Biological Profiling of Fe(III)–Bipyridine Schiff Base Complexes: Experimental, Computational and Pharmacokinetic Insights","authors":"Swaila Bano, Saniya Firdaus, Sujeet Yadav, Farha Arshi, Saurabh Kumar, Monisha Banerjee, Harshita Gaurav, Amritesh C. Shukla, Anushka Bari, Sudheer K. Singh, Ashok K. Singh","doi":"10.1002/slct.74570","DOIUrl":"https://doi.org/10.1002/slct.74570","url":null,"abstract":"<div>\u0000 \u0000 Schiff base ligands and their transition metal complexes continue to attract attention for their versatile coordination behavior and biological relevance. Herein, three thiosemicarbazone ligands (L1–L3) were synthesized from para-nitrobenzaldehyde and substituted thiosemicarbazides and converted to their corresponding iron(III)–bipyridine complexes (FT1–FT3). The compounds were characterized by FT–IR, UV–vis, 1H/13C NMR, ESI–MS, EPR, molar conductivity, and elemental analysis. Spectroscopic data confirmed coordination through the azomethine nitrogen and thione sulfur, evidenced by shifts in characteristic bands and new Fe─N and Fe─S vibrations. DFT optimization revealed a distorted octahedral geometry and provided HOMO–LUMO gaps, global reactivity descriptors, and molecular electrostatic potential maps. Anticancer (SiHa), antimycobacterial, and antifungal assays showed that FT3 was the most active, giving 72.85% antifungal inhibition at 1000 ppm together with improved anticancer and antibacterial activity. Molecular docking against HPV-18 E2 (PDB 1F9F) and CYP51 (PDB 1EA1) gave favorable binding energies that correlated with the experimental trends, FT3 forming the most stable interactions. ADME predictions indicated broadly acceptable, though preliminary, pharmacokinetic behavior. Overall, these iron(III) Schiff base complexes display promising multi-target activity warranting further mechanistic and preclinical study.\u0000 </div>","PeriodicalId":146,"journal":{"name":"ChemistrySelect","volume":"11 37","pages":""},"PeriodicalIF":2.3,"publicationDate":"2026-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149014614","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

Copper-Catalyzed C─N Cross-Coupling of Benzohydrazides with Boronic Acids for N-Aryl Amide Synthesis 铜催化苯并肼与硼酸C─N交偶联合成N-芳基酰胺

IF 2.3 4区化学

ChemistrySelect Pub Date : 2026-09-23 DOI: 10.1002/slct.74624

Jayshree Nandkumar Solanke, Rana Chatterjee, Rambabu Dandela

引用次数: 0

Phytochemical-Based In Silico Antiviral Drug Discovery From Withania somnifera and Saraca asoca Targeting Ebola and Marburg Viruses 基于硅基植物化学的抗伊波拉病毒和马尔堡病毒药物的发现

IF 2.3 4区化学

ChemistrySelect Pub Date : 2026-09-23 DOI: 10.1002/slct.202507265

Munir Ibrahim, Asmita Detroja, JayKumar Koradiya, Avani Bhimani, Tirth Chetankumar Bhatt, Gaurav Sanghvi, Ashok Kumar Bishoyi

{"title":"Phytochemical-Based In Silico Antiviral Drug Discovery From Withania somnifera and Saraca asoca Targeting Ebola and Marburg Viruses","authors":"Munir Ibrahim, Asmita Detroja, JayKumar Koradiya, Avani Bhimani, Tirth Chetankumar Bhatt, Gaurav Sanghvi, Ashok Kumar Bishoyi","doi":"10.1002/slct.202507265","DOIUrl":"https://doi.org/10.1002/slct.202507265","url":null,"abstract":"<div>\u0000 \u0000 The Ebola and Marburg viruses are among the most fatal pathogens known, often causing hemorrhagic fever with very high mortality rates. Despite their severity, therapeutic options remain limited. This study explored phytochemicals from Withania somnifera and Saraca asoca to evaluate their ability to interact with and potentially inhibit the VP24 protein, a key factor in the replication of both viruses. The molecular characteristics and drug-likeness of selected compounds were examined using the MolSoft server, while pharmacokinetic behavior was predicted through the ProTox and pkCSM platforms. Molecular docking experiments were performed with PyRx, and the stability of the best-scoring complexes was analyzed through a 100-ns molecular dynamics simulation using GROMACS. The investigation identified withaferin-A from W. somnifera as a promising inhibitor of the Ebola VP24 protein, while Catechin from Saraca asoca showed notable affinity toward the Marburg VP24 protein. These findings provide a robust computational foundation for the development of plant‑derived antiviral agents; however, experimental validation, lead optimization, pharmacokinetic evaluation, and toxicity assessment are required to establish their therapeutic potential. Overall, the study highlights the value of phytochemicals in antiviral drug discovery and supports global health efforts in line with Sustainable Development Goal 3 (SDG-3) by encouraging innovative strategies against emerging infectious diseases.\u0000 </div>","PeriodicalId":146,"journal":{"name":"ChemistrySelect","volume":"11 37","pages":""},"PeriodicalIF":2.3,"publicationDate":"2026-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149014662","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

A Comprehensive First-Principles Investigation of the Structural and Physical Properties of the Complete Bismuth Oxyhalide Family BiOX (X = F, Cl, Br, I) 完整氧化卤化铋族BiOX （X = F, Cl, Br， I）结构和物理性质的第一性原理综合研究

IF 2.3 4区化学

ChemistrySelect Pub Date : 2026-09-23 DOI: 10.1002/slct.74622

Pengju Li, Xiong Zhang, Chao Wang, Yanning Yang, Shuili Zhang, Wenxiang Liu

{"title":"A Comprehensive First-Principles Investigation of the Structural and Physical Properties of the Complete Bismuth Oxyhalide Family BiOX (X = F, Cl, Br, I)","authors":"Pengju Li, Xiong Zhang, Chao Wang, Yanning Yang, Shuili Zhang, Wenxiang Liu","doi":"10.1002/slct.74622","DOIUrl":"https://doi.org/10.1002/slct.74622","url":null,"abstract":"<div>\u0000 \u0000 First‑principles DFT calculations systematically investigate the structural, electronic, elastic, thermodynamic, and optical properties of the complete BiOX (X = F, Cl, Br, I) family. All compounds adopt a tetragonal P4/nmm layered structure, with lattice constants increasing monotonically with halogen size, in excellent agreement with experiments. Electronic structure reveals a progressive bandgap narrowing from 3.132 eV (BiOF) to 1.577 eV (BiOI), driven by the upward shift of halogen np orbitals at the valence band maximum, while the conduction band minimum remains Bi 6p in character. Elastic constants satisfy all mechanical stability criteria; BiOF exhibits the highest bulk (118 GPa) and shear (40 GPa) moduli, yet Vickers hardness increases monotonically from 1.93 GPa (BiOF) to 7.30 GPa (BiOI) due to a halogen‑induced ductile‑to‑brittle transition (Pugh's G/B ratio). Quasi‑harmonic thermodynamic calculations show decreasing Debye temperatures (285–235 K) and composition‑dependent Grüneisen parameters. Optically, the absorption edge red‑shifts from BiOF to BiOI, with BiOI showing the strongest visible‑light response. This unified work establishes halogen‑tunable trends across multiple physical properties, providing a robust theoretical foundation for designing BiOX‑based photocatalysts and optoelectronic devices. The results highlight the critical role of halogen substitution in simultaneously modulating lattice, electronic, mechanical, thermal, and optical behavior.\u0000 </div>","PeriodicalId":146,"journal":{"name":"ChemistrySelect","volume":"11 37","pages":""},"PeriodicalIF":2.3,"publicationDate":"2026-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149014773","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

Advances in Hydrocarbon Adsorptive Materials: Rational Design, Adsorption Chemistry, and Frontier Applications 烃类吸附材料的研究进展：合理设计、吸附化学及前沿应用

IF 2.3 4区化学

ChemistrySelect Pub Date : 2026-09-23 DOI: 10.1002/slct.74487

Junyan Chen, Bin Guan, Lei Zhu, Tiankui Zhu, Shiying Chang, Jiangli Ma, Rong Wang, Dongxia Yang, Zhen Huang

{"title":"Advances in Hydrocarbon Adsorptive Materials: Rational Design, Adsorption Chemistry, and Frontier Applications","authors":"Junyan Chen, Bin Guan, Lei Zhu, Tiankui Zhu, Shiying Chang, Jiangli Ma, Rong Wang, Dongxia Yang, Zhen Huang","doi":"10.1002/slct.74487","DOIUrl":"https://doi.org/10.1002/slct.74487","url":null,"abstract":"<div>\u0000 \u0000 This review comprehensively and critically examines the research progress on hydrocarbon (HC) adsorbent materials in three key application scenarios: engine cold-start HC emission control, industrial VOC recovery, and petrochemical HC separation. Written in a general-to-specific structure, the review first outlines the sources and hazards of HC and the advantages of adsorption technology, then explores in detail the adsorption mechanisms, material design, and performance of zeolite molecular sieves, metal–organic frameworks (MOFs), carbon-based materials, and composites by section. In the application reviews, the review points out that zeolite molecular sieves (e.g., ZSM-5) are the mainstream materials for cold-start HC traps due to their unique channel structure, tunable hydrophobicity, and excellent hydrothermal stability; while for olefin/paraffin separation, metal–organic frameworks (such as MOF-74 series with open metal sites) exhibit ultra-high selectivity via π-complexation, making them potential alternatives to energy-intensive distillation. Finally, the review summarizes current challenges in the trade-off between adsorption capacity and selectivity, as well as issues of stability and cost for these materials, and looks ahead to future directions such as novel porous materials, machine learning-aided design, and integrated adsorption-catalysis technologies.\u0000 </div>","PeriodicalId":146,"journal":{"name":"ChemistrySelect","volume":"11 37","pages":""},"PeriodicalIF":2.3,"publicationDate":"2026-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149014777","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

Recent Advances in Molecularly Imprinted Polymer-Based Electrochemical Sensors for Ascorbic Acid Detection 抗坏血酸分子印迹聚合物电化学传感器的研究进展

IF 2.3 4区化学

ChemistrySelect Pub Date : 2026-09-23 DOI: 10.1002/slct.74537

Jyoti Lodhi, Ayushi Singhal, Mohd. Abubakar Sadique, Raju Khan

{"title":"Recent Advances in Molecularly Imprinted Polymer-Based Electrochemical Sensors for Ascorbic Acid Detection","authors":"Jyoti Lodhi, Ayushi Singhal, Mohd. Abubakar Sadique, Raju Khan","doi":"10.1002/slct.74537","DOIUrl":"https://doi.org/10.1002/slct.74537","url":null,"abstract":"<div>\u0000 \u0000 Vitamin C, or ascorbic acid (AA), is a water-soluble vitamin widely recognized for its antioxidant properties and is essential for collagen synthesis, immune function, neurotransmitter production, and protection against oxidative stress. Physiological AA concentrations in healthy human plasma typically range from 30 to 90 µM, whereas levels below 11 µM indicate severe deficiency (scurvy). Detecting AA is important in various fields, such as food monitoring and disease management. The demand for precise, efficient, and sensitive AA detection methods has driven significant advances in sensor technology. Numerous analytical techniques, including spectroscopy, HPLC, and electroanalytical methods, are used to identify and quantify AA. Among these, molecularly imprinted polymer (MIP)-based electrochemical sensors have emerged as important tools due to their high selectivity, sensitivity, chemical stability, low cost, and reusability. This review comprehensively discusses recent advances in MIP-based electrochemical sensors for selective, high-performance AA detection, highlighting the role of conductive nanomaterials in enhancing sensor performance. Finally, current challenges, including the complexity of the imprinting process, are discussed, along with future perspectives involving smart sensing technologies, portable devices, and real-time monitoring for clinical, food, and environmental applications.\u0000 </div>","PeriodicalId":146,"journal":{"name":"ChemistrySelect","volume":"11 37","pages":""},"PeriodicalIF":2.3,"publicationDate":"2026-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149014612","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

Facile Synthesis of Rice Husk Derived SiO2/g-C3N4 Heterostructures for Enhanced Photocatalytic Degradation of Dyes and Antibiotics Under Visible Light 稻壳衍生SiO2/g-C3N4异质结构在可见光下的快速合成及其对染料和抗生素的光催化降解

IF 2.3 4区化学

ChemistrySelect Pub Date : 2026-09-23 DOI: 10.1002/slct.74605

A. Janaki Ramya, Vinothkumar Arumugam, V. Loganathan, S. Kumaran

{"title":"Facile Synthesis of Rice Husk Derived SiO2/g-C3N4 Heterostructures for Enhanced Photocatalytic Degradation of Dyes and Antibiotics Under Visible Light","authors":"A. Janaki Ramya, Vinothkumar Arumugam, V. Loganathan, S. Kumaran","doi":"10.1002/slct.74605","DOIUrl":"https://doi.org/10.1002/slct.74605","url":null,"abstract":"<div>\u0000 \u0000 In this work, SiO2/g-C3N4 photocatalyst was prepared using rice-husk-derived silica (SiO2-RH) and urea-derived g-C3N4 by a simple calcination method. The SiO2/g-C3N4 composites were prepared with different g-C3N4 loadings (20, 25, and 30 wt%) and analyzed for visible-light degradation of methylene blue (MB) and ciprofloxacin (CIP). X-ray diffraction (XRD) results confirmed the presence of amorphous SiO2 and the intact g-C3N4 structure. UV–vis DRS results showed that the band gap decreased from 3.25 eV (g-C3N4) to 2.81 XRD results confirmed predominantly amorphous rice-husk-derived SiO2 together with the characteristic g-C3N4 structure. eV (SiO2-CN25). Photoluminescence (PL) results, photocurrent (7.6 µA cm−2) and EIS (Rct = 28.7 Ω cm2) confirmed better charge transfer and lower electron–hole recombination. Textural analysis showed a large surface area of 168.3 m2 g−1 and mesopores (8–10 nm) for SiO2-CN25. Under visible light (λ > 420 nm), SiO2-CN25 degraded 94% of MB and 89% of CIP in 90 min, with rate constants of 0.031 and 0.027 min−1. The optimized SiO2-CN25 also showed good stability, retaining 90% of its initial photocatalytic activity after five consecutive reuse cycle 2.8s. The biomass-derived, metal-free SiO2-CN25 shows high efficiency, stability and eco-friendliness for visible-light wastewater treatment.\u0000 </div>","PeriodicalId":146,"journal":{"name":"ChemistrySelect","volume":"11 37","pages":""},"PeriodicalIF":2.3,"publicationDate":"2026-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149014613","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

Eggshell-Derived Hydroxyapatite Coupled With Graphitic Carbon Nitride for High-Performance Adsorptive Removal of Pb (II) From Aqueous Solution 蛋壳衍生羟基磷灰石偶联石墨氮化碳高效吸附去除水溶液中的铅（II）

IF 2.3 4区化学

ChemistrySelect Pub Date : 2026-09-23 DOI: 10.1002/slct.74615

Akash B V, Chandru G, N. Priyadarshini, Ilaiyaraja Perumal

{"title":"Eggshell-Derived Hydroxyapatite Coupled With Graphitic Carbon Nitride for High-Performance Adsorptive Removal of Pb (II) From Aqueous Solution","authors":"Akash B V, Chandru G, N. Priyadarshini, Ilaiyaraja Perumal","doi":"10.1002/slct.74615","DOIUrl":"https://doi.org/10.1002/slct.74615","url":null,"abstract":"<div>\u0000 \u0000 The hydroxyapatite–graphitic carbon nitride (HAp–GCN) nanocomposite was synthesized. The chemical structure, crystalline features, surface morphology, elemental composition, and textural properties of HAp–GCN were obtained using FTIR, XRD, FESEM, EDX, elemental mapping, and BET characterization techniques. HAp–GCN nanocomposite demonstrated quick adsorption kinetics and effective Pb(II) removal from aqueous solutions. Langmuir isotherm model provided the most suitable description of the equilibrium adsorption behavior, indicating predominantly homogeneous monolayer adsorption and yielding a maximum adsorption capacity of (227.7 ± 10.1 mg g−1). The van't Hoff analysis of temperature dependent adsorption data revealed a positive standard enthalpy change (ΔH°= + 139.9 kJ mol−1), indicating that Pb(II) adsorption onto HAp–GCN is an endothermic process. Desorption and recyclability studies performed using 0.5 M HCl over three successive adsorption-desorption cycles showed a gradual decline in desorption performance, however, the HAp–GCN nanocomposite retained appreciable Pb(II) adsorption efficiency. The result obtained confirms the potential of the material for effective remediation of Pb(II)-contaminated aqueous systems.\u0000 </div>","PeriodicalId":146,"journal":{"name":"ChemistrySelect","volume":"11 37","pages":""},"PeriodicalIF":2.3,"publicationDate":"2026-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149014792","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