Sustainable Materials and Technologies最新文献

{"title":"Optimizing CO2/CH4 selectivity using acid-activated clay for biogas upgrading: A response surface study","authors":"Riya Aneja,&nbsp;Anuj Chauhan,&nbsp;Vipin Kumar Saini","doi":"10.1016/j.susmat.2025.e01824","DOIUrl":"10.1016/j.susmat.2025.e01824","url":null,"abstract":"<div><div>The selective removal of CO₂ from biogas is crucial for producing biomethane (Bio-CNG) with higher calorific value and cleaner combustion properties. In this work, acid activation of montmorillonite (MMT) was systematically optimized to enhance its performance as a low-cost, sustainable adsorbent for CO₂/CH₄ separation. Using a rotatable central composite design (RCCD) within the Response Surface Methodology (RSM) framework, the effects of acid concentration, activation temperature, and treatment time on CO₂ adsorption capacity and CO₂/CH₄ selectivity were investigated. Seventeen acid-activated clay samples (AC − 1 to AC-17) were synthesized, and their adsorption behavior was modeled with the Sips equation. The optimal conditions (acid concentration = 1.9 N, temperature = 28 °C, contact time = 247 min) yielded an optimized acid-activated clay (OAC) with a CO₂ uptake of 1.76 mmol·g⁻¹ and a CO₂/CH₄ selectivity of 121 at 1000 kPa, in close agreement with the predicted value of 118. Structural and textural analysis confirmed significant improvements in surface area (60 to 194 m²·g⁻¹) and pore volume (0.33 to 0.43 cm³·g⁻¹), attributed to dealumination and the formation of silanol groups. Working capacity analysis under PSA (1 bar)/VSA (1 Torr) conditions confirmed the practical separation potential of OAC. These findings demonstrate that optimized acid-activated clays provide a scalable and economical pathway for biogas upgrading, bridging the gap between high-performance synthetic adsorbents and low-cost natural materials.</div></div>","PeriodicalId":22097,"journal":{"name":"Sustainable Materials and Technologies","volume":"47 ","pages":"Article e01824"},"PeriodicalIF":9.2,"publicationDate":"2026-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145840309","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Solar driven photocatalytic glycerol and glucose reforming via noble metals free BiOX (X = Cl, Br, I)-TiO2 composites","authors":"Tayyaba Kanwal ,&nbsp;Vittorio Loddo ,&nbsp;Claudio Maria Pecoraro ,&nbsp;Giovanni Palmisano ,&nbsp;Sarah Hamdan ,&nbsp;Zhe Wang ,&nbsp;Israa Othman ,&nbsp;Leonardo Palmisano ,&nbsp;Marianna Bellardita","doi":"10.1016/j.susmat.2025.e01825","DOIUrl":"10.1016/j.susmat.2025.e01825","url":null,"abstract":"<div><div>Recent research on the valorization of biomass has received a lot of interest as it allows the obtaining of products with high added value. In this regard, this study explores aerobic and anaerobic heterogeneous photocatalytic partial oxidation under both UV and simulated solar irradiation of glycerol and glucose in aqueous medium using bismuth oxyhalide-based photocatalysts BiOX (X = Cl, Br, I). Moreover, noble metal-free BiOX-TiO₂ (P25) composites were prepared through a simple ball milling procedure. Both the formation of partial oxidation compounds, namely 1,3-dihydroxyacetone, glyceraldehyde and glycolic acid from glycerol and arabinose and formic acid from glucose in solution, and the production of CO₂ and H₂ in the gas phase, were followed. Pure BiOBr and BiOCl proved to be more effective than bare TiO₂ P25 (one of the most used and studied photocatalysts) affording a higher selectivity <!--> <!-->towards high added value products whilst the composites samples displayed high glycerol conversion values that reached 62 %. Particularly noteworthy was the effectiveness of BiOCl-P25 and BiOBr-P25 samples containing 5 and 7 wt% of BiOCl or BiOBr with respect to P25, in promoting also H₂ formation under simulated sunlight irradiation and without the presence of noble metal species such as Pt. To the best of our knowledge, BiOX-TiO₂ photocatalysts have never been used for the photoreforming of glycerol and glucose.</div></div>","PeriodicalId":22097,"journal":{"name":"Sustainable Materials and Technologies","volume":"47 ","pages":"Article e01825"},"PeriodicalIF":9.2,"publicationDate":"2026-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145840398","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Recent advances in nanostructured boron nitride based flame retardant composites: A comprehensive review","authors":"K. Deepthi Jayan ,&nbsp;Kalim Deshmukh","doi":"10.1016/j.susmat.2025.e01827","DOIUrl":"10.1016/j.susmat.2025.e01827","url":null,"abstract":"<div><div>With formerly unattainable control over material properties at the nanoscale, nanotechnology has emerged as a paradigm shift in materials research. Given the increasing demand for fire-resistant materials in industries, the use of nanomaterials in flame-retardant composites has garnered significant attention among their many other uses. The nanostructured boron nitride (BN) is a potential candidate in this area since it possesses outstanding structural and chemical properties and its two-dimensional (2D) structure endows them with thermal stability, high surface area, and natural flame resistance making them extremely valuable for fire safety improvement in many materials. In recent years, progress in the synthesis, functionalization, and use of nanostructured BN in flame retardant composites cast new light on the fundamental processes that underlie their flame-retardant properties but also triggered the creation of new, high-performance flame-retardant materials. This review provides an integral overview of the most recent advancements in nanostructured BN-based flame-retardant composites, systematically exploring the synthesis routes, properties, characterization methods, and flame retardancy mechanisms. The review explores the underlying principles of the flame-resistant BN-based composites, emphasizing their versatile applications in different industries highlighting their vast potential as next-generation flame retardants. The future trends and challenges associated with the extensive utilization of the nanostructured BN in flame retardant applications are briefed. With a detailed description of the state-of-the-art in nanostructured BN with flame-retardant composites, the current review intends to promote research activities in this emerging area leading to the progress of next-generation sustainable flame-retardant materials with excellent performance.</div></div>","PeriodicalId":22097,"journal":{"name":"Sustainable Materials and Technologies","volume":"47 ","pages":"Article e01827"},"PeriodicalIF":9.2,"publicationDate":"2026-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145840396","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A sustainable strategy to produce biodegradable electrodes for the electrochemical detection of rutin and quercetin in grape samples","authors":"Geanderson Emilio de Almeida ,&nbsp;Emanuel Airton de Oliveira Farias ,&nbsp;Cláudio Guilherme de Sousa Macedo ,&nbsp;Ismagno Alves de Carvalho ,&nbsp;Manuela Nunes da Silva ,&nbsp;Káliton Pereira Mororó ,&nbsp;Márcia Eduarda Marinho Nunes ,&nbsp;Thays Beatryce Pereira Vilante ,&nbsp;Fábio de Oliveira Silva Ribeiro ,&nbsp;Amando Oliveira Matias ,&nbsp;Carla Eiras","doi":"10.1016/j.susmat.2025.e01830","DOIUrl":"10.1016/j.susmat.2025.e01830","url":null,"abstract":"<div><div>The development of environmentally friendly electrochemical platforms is essential to reduce the environmental impact of disposable sensors while maintaining high analytical performance. This study reports a biodegradable sensor fabricated from a gelatin- and gum-based matrix derived from <em>Amburana cearensis</em> (GAmb) exudate, replacing conventional polymers with renewable, biodegradable materials. The device was produced by stencil printing using a conductive ink formulated with multi-walled carbon nanotubes (MWCNTs) and an aqueous GAmb solution. As a proof-of-concept, the sensor was used to detect quercetin (QCT) and rutin (RU), natural antioxidants present in grapes. The sensor exhibited remarkable analytical performance, with a linear response over 1–100 μM and detection limits of 25.6 nM for QCT and 9.1 nM for RU. Interference studies showed signal variation of less than 10 % in the presence of standard components of the grape matrix and up to 30 % in the presence of pesticides. The analysis of grape extracts required minimal sample preparation, allowing for precise quantification of QCT and RT concentrations in real samples. Recovery rates close to 102.3 % for RU and 100.2 % for QCT demonstrated the effectiveness of the method. Additionally, soil biodegradation tests showed the device's environmental friendliness: it lost structural integrity within 10 days when in contact with soil. On the other hand, maintain functionality for up to 180 days under appropriate storage conditions. This approach provides a sustainable strategy for green sensor technology and bioelectronics, offering new perspectives for the monitoring of bioactive compounds aligned with the principles of the circular economy.</div></div>","PeriodicalId":22097,"journal":{"name":"Sustainable Materials and Technologies","volume":"47 ","pages":"Article e01830"},"PeriodicalIF":9.2,"publicationDate":"2026-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145976322","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Tailoring biodegradable copolyesters from bis(2-hydroxyethyl) terephthalate and aliphatic dicarboxylic acids: Toward sustainable packaging materials","authors":"Hojun Shin ,&nbsp;Gawon Pak ,&nbsp;Shinhyeong Choe ,&nbsp;Hoseong Moon ,&nbsp;Jaewook Myung ,&nbsp;Heejong Yu ,&nbsp;Woojun Choi ,&nbsp;Jongchul Seo","doi":"10.1016/j.susmat.2026.e01868","DOIUrl":"10.1016/j.susmat.2026.e01868","url":null,"abstract":"<div><div>The increasing accumulation of plastic waste and the limited efficiency of mechanical recycling highlight the need for sustainable polymer systems that combine chemical recyclability and biodegradability. Bis(2-hydroxyethyl) terephthalate (BHET), a monomer recovered from depolymerized polyethylene terephthalate (PET), is an attractive platform for creating new recyclable and compostable materials. However, insufficient understanding of the structure–property–degradation relationships of BHET-derived copolyesters hinders their rational design for packaging applications. In this study, a series of BHET–aliphatic acid copolyesters was synthesized via melt polycondensation using aliphatic dicarboxylic acids with varying chain lengths to investigate the influence of the molecular architecture on the material performance and end-of-life behavior. Increasing the aliphatic chain length reduced the crystallinity and thermal transition temperatures, resulting in enhanced flexibility and optical transparency but reduced tensile strength and gas-barrier efficiency. Under industrial composting conditions, longer-chain copolyesters degraded more rapidly, transitioning from surface-limited erosion to bulk erosion driven by hydrolysis-induced ester bond cleavage. Compared with commercial poly(butylene adipate-<em>co</em>-terephthalate) (PBAT), the BHET–aliphatic series exhibited superior optical clarity and higher recycled carbon content, underscoring their potential as next-generation sustainable packaging materials that unify performance and circular sustainability metrics. These findings offer practical guidance for the development of biodegradable aromatic–aliphatic copolymers for sustainable packaging applications, aligned with the relationship among molecular structure, material properties, and biodegradation.</div></div>","PeriodicalId":22097,"journal":{"name":"Sustainable Materials and Technologies","volume":"47 ","pages":"Article e01868"},"PeriodicalIF":9.2,"publicationDate":"2026-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145976328","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Europium/Terbium metal-organic frameworks for multifaceted luminescent sensing: A comprehensive review","authors":"Xin Zhong ,&nbsp;Sirui Guo ,&nbsp;Xiang Xiang Li ,&nbsp;Cui Ying Pu ,&nbsp;Jun Wang ,&nbsp;Lu Lu ,&nbsp;Aparna Kushwaha ,&nbsp;Abhinav Kumar ,&nbsp;Ying Pan","doi":"10.1016/j.susmat.2025.e01805","DOIUrl":"10.1016/j.susmat.2025.e01805","url":null,"abstract":"<div><div>Metal-organic frameworks (MOFs) represent an architecturally versatile class of porous crystalline materials formed through the self-assembly of metal nodes either ions or polynuclear clusters and organic ligands bearing multiple coordination sites. Their extended three-dimensional lattice structures result from precise metal-ligand coordination interactions, enabling tunable porosity, high surface area, and structural adaptability. This synthetic flexibility has positioned MOFs at the forefront of advanced materials research, with wide-ranging applications in gas storage, separation, catalysis, and sensing. Lanthanide-based metal-organic frameworks (Ln-MOFs) represent a dynamic class of hybrid porous materials, distinguished by the integration of trivalent lanthanide ions with multifunctional organic linkers through coordination chemistry. These frameworks retain the hallmark properties of conventional MOFs tunable porosity, structural modularity, and crystallinity while uniquely incorporating the exceptional photoluminescent attributes of lanthanide ions, originating from their shielded 4f orbitals. As a result, Ln-MOFs exhibit remarkable optical characteristics, including large Stokes shifts, narrow-band emissions, high color purity, substantial quantum yields, and prolonged emission lifetimes, making them highly desirable for photonic applications. Recent progress has highlighted the utility of Ln-MOFs especially the europium/terbium MOFs in the fluorescence-based detection of a broad spectrum of analytes, ranging from metal ions and anionic species to pharmaceutical residues, biomacromolecules, agrochemical contaminants, and antimicrobial substances. This review consolidates recent advances in the field, beginning with a survey of synthetic strategies employed in the construction of Ln-MOFs, followed by an analysis of their emission behavior. Special attention is given to their application in chemical and biological sensing, with emphasis on the photophysical mechanisms governing signal modulation. The insights presented aim to facilitate the rational design of next-generation Ln-MOF optical sensors and stimulate future developments in this rapidly evolving research domain.</div></div>","PeriodicalId":22097,"journal":{"name":"Sustainable Materials and Technologies","volume":"47 ","pages":"Article e01805"},"PeriodicalIF":9.2,"publicationDate":"2026-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145748069","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Construction a biochar-based microbial agent for boosting biocontrol of Bacillus subtilis on cotton verticillium wilt","authors":"Yunyun Wang ,&nbsp;Lulu Wang ,&nbsp;Yu Qin ,&nbsp;Xiaopan Du ,&nbsp;Muhan Liang ,&nbsp;Bo Gao ,&nbsp;Genlin Zhang","doi":"10.1016/j.susmat.2025.e01802","DOIUrl":"10.1016/j.susmat.2025.e01802","url":null,"abstract":"<div><div>Biological control agents (BCAs), such as <em>Bacillus subtilis</em>, offer an eco-friendly alternative to synthetic chemicals for managing the plant diseases. However, the application of BCAs is often hampered by complex soil environmental factors, leading to low survival rate and disease control efficiency. Herein, based on the microbial cell adhesion of active functional groups on the biochar surface, we constructed a biochar-based microbial agent (K-BS191) by immobilizing the biocontrol bacterium <em>Bacillus subtilis</em> BS191 on biochar (KNWP) for biological control of cotton Verticillium wilt caused by <em>Verticillium dahliae</em>. The resulting immobilized microbial agent K-BS191 exhibited the potent inhibitory activity against <em>Verticillium dahliae</em> V592, 28.30 % higher fungistatic rate than <em>Bacillus subtilis</em> BS191 suspension. The effective viable count of K-BS191 reached 1.52 × 10¹⁰ CFU/g, and remained at 7.75 × 10⁹ CFU/g after 180 days of storage at room temperature. The pot trials confirmed that K-BS191 promoted cotton growth not only through managing Verticillium wilt (88.76 % of control efficiency, 19.67 % higher than <em>Bacillus subtilis</em> BS191) but also through enhancing soil fertility and reconstructing beneficial microbiota in soil. The findings of this study thus contribute to the development of sustainable biocontrol strategies for cotton Verticillium wilt.</div></div>","PeriodicalId":22097,"journal":{"name":"Sustainable Materials and Technologies","volume":"47 ","pages":"Article e01802"},"PeriodicalIF":9.2,"publicationDate":"2026-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145748073","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Dual-functional corrosion inhibitors from biomass-derived N, Br-carbon dots via adsorption film protection and fluorescence response","authors":"Dan Zhou ,&nbsp;Lincai Peng ,&nbsp;Xiaohong Chen ,&nbsp;Danchu Wang ,&nbsp;Pengcheng Zhou ,&nbsp;Wenpo Li","doi":"10.1016/j.susmat.2025.e01797","DOIUrl":"10.1016/j.susmat.2025.e01797","url":null,"abstract":"<div><div>Corrosion threatens the resilience of critical infrastructure, imposes massive economic burdens, and challenges global resource sustainability. The development of advanced anti-corrosion and corrosion monitoring inhibitors is of paramount importance. Nevertheless, traditional inhibitors suffer from inherent drawbacks, including a lack of ecological compatibility, uni-functionality, and non-persistent protective effects. The exploration of all-in-one inhibitors with multifunction remains limited. Herein, novel biomass-derived N, Br-co-doped carbon dots (HCDs) were synthesized for comprehensive protection of Q235 steel in hydrochloric acid environment and were capitalized on their intrinsic fluorescence by employing them as a fluorescent probe in corrosion monitoring and studying their adsorption behavior. HCDs provide outstanding corrosion inhibition (&gt;97 %) for carbon steel after 120 h at 150 mg L⁻¹. This remarkable durability stems from their abundant functional groups, which facilitate anchoring and the formation of a dense monolayer film. Results of fluorescence-quantified corrosion monitoring and adsorption behavior tracking have not only unveiled strong affinity, ultra-sensitivity (LOD: 0.274 μM), and broad detection range of HCDs toward Fe³⁺, where Fe³⁺ is the dominant corrosion product from steel dissolution; but also clarified HCDs' adsorption behavior: the initially transient adsorption and subsequently equilibrium adsorption. This work unveils a fresh vantage point for the mechanistic exploration of carbon dots as corrosion inhibitors, extends the application of inherent fluorescence of carbon dot within corrosion inhibition and enables multifunctional all-in-one CD material design in an economical, efficient, and convenient way.</div></div>","PeriodicalId":22097,"journal":{"name":"Sustainable Materials and Technologies","volume":"47 ","pages":"Article e01797"},"PeriodicalIF":9.2,"publicationDate":"2026-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145748133","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Green synthesis of Ti-MXene/Ti-MOF nano-hybrid carrying bio-inspired dopamine for advanced anti-corrosion smart coating","authors":"Hedie Kazemi ,&nbsp;Ali Dashan ,&nbsp;Seyyed Arash Haddadi ,&nbsp;Tizazu H. Mekonnen ,&nbsp;Bahram Ramezanzadeh ,&nbsp;Reza Goudarzi","doi":"10.1016/j.susmat.2025.e01813","DOIUrl":"10.1016/j.susmat.2025.e01813","url":null,"abstract":"<div><div>MXenes, as the latest advanced two-dimensional materials with exceptional chemical and physical properties, have attracted significant interest in the scope of coatings and corrosion protection. Incorporating MXene into a polymer matrix can dramatically enhance coating performance, and when synergistically combined with metal-organic frameworks (MOFs) and green corrosion inhibitors, both passive and active protection mechanisms could be achieved alongside improved mechanical properties. In this study, an epoxy-based composite coating system with intelligent active self-healing properties, superior corrosion resistance, and mechanical stability was achieved using MXene sheets decorated with a MIL-125 (Ti) MOF, which was further loaded with bio-inspired dopamine and zinc inhibitors. After 63 days of immersion in a simulated corrosive environment, the optimized coating (EPO/ZDMS-MXene) demonstrated an impedance of 22.63 GΩ.cm², compared to 0.535 GΩ.cm² for the control sample (Epoxy, EPO). Additionally, electrochemical impedance spectroscopy (EIS) tests on scratched samples revealed significantly higher resistance for the EPO/ZDMS-MXene coating. Adhesion tests confirmed superior performance, with the ZDMS-MXene coating exhibiting a disbondment radius of only 5.72 mm, versus 12 mm for the EPO. Thermomechanical evaluation further showed an increased T_g temperature (84.04 °C vs. 81.79 °C) and a 34 % higher young modulus in the EPO/ZDMS-MXene compared to the EPO control. These results highlight the dual protective strategy combining a robust passive barrier with an intelligent active self-healing mechanism, offering a promising approach for durable and high-performance protective coatings.</div></div>","PeriodicalId":22097,"journal":{"name":"Sustainable Materials and Technologies","volume":"47 ","pages":"Article e01813"},"PeriodicalIF":9.2,"publicationDate":"2026-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145797579","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Magnetic biochar functionalized with amino acid ionic liquid as a sustainable composite adsorbent: Synergistic enhancement of hydrogen bonding for effective norfloxacin adsorption","authors":"Xianzhao Zhang,&nbsp;Peirong Zhang,&nbsp;Fengmao Liu,&nbsp;Xuehui Chen,&nbsp;Qingrong Peng","doi":"10.1016/j.susmat.2025.e01810","DOIUrl":"10.1016/j.susmat.2025.e01810","url":null,"abstract":"<div><div>The increasing contamination of water with antibiotics like norfloxacin (NOR) poses a risk to the environment. This study introduced a sustainable solution by developing a novel magnetic biochar composite functionalized with amino acid ionic liquids (AAILs) for efficient NOR adsorption. The biochar was optimized using central composite design, and 1-ethyl-1-methyl-pyrrolidinium glycinate was selected for modification of the magnetic biochar. The adsorption behavior fit well to both pseudo-second-order kinetics and the Langmuir isotherm. The optimal MPBC/AAIL composite demonstrated a remarkable NOR adsorption capacity of 296.8 mg·g^-1 at 298 K, significantly surpassing that of unmodified materials (113.4 mg·g^-1). The adsorption mechanism involved multiple interactions, including electrostatic attraction, pore-filling, hydrogen bonding, and π-π electron donor-acceptor interactions. Characterization, site energy distribution and density functional theory analyses revealed that introducing AAIL enhanced the oxygen-containing functional groups and facilitated hydrogen bonding, which emerged as the primary adsorption driving force. The material was resistant to environmental variations (pH, coexisting ions, and dissolved organic matter) and retained 79% capacity after five reuse cycles, achieving over 99% NOR removal in real water, while demonstrating excellent biocompatibility. This work highlights the role of functionalized biochar composites in addressing antibiotic contamination in water, providing a sustainable alternative to conventional materials.</div></div>","PeriodicalId":22097,"journal":{"name":"Sustainable Materials and Technologies","volume":"47 ","pages":"Article e01810"},"PeriodicalIF":9.2,"publicationDate":"2026-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145797580","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}