Sustainable Materials and Technologies最新文献

英文中文

Reusing cellulose acetate microplastic fibres derived from discarded cigarette butts as superior adsorbent for lead ions: UV ageing, adsorption mechanisms and DOM investigation

IF 8.6 2区工程技术 Q1 ENERGY & FUELS

Sustainable Materials and Technologies

Pub Date : 2025-02-22 DOI: 10.1016/j.susmat.2025.e01319

A.G. Sethulakshmi, M.P. Saravanakumar

Cigarette butts (CBs), the residual components of cigarettes post-consumption, are primarily composed of cellulose acetate microplastic fibres (CA MP_f), which significantly contribute to the global excess of non-biodegradable plastic trash. Consequently, for the first time, this study examines the reusability of hazardous CA MP_f by extracting it from discarded CBs, recycling it, and employing as an effective adsorbent for Pb (II) removal from aquatic environments. Further, the UV ageing characteristics, adsorption behavior, and dissolved organic matter (DOM) investigation of CA MP_f embedded within CBs have been examined, to comprehend the heavy metal adsorption characteristics in water environment. Subsequently, under UV irradiations, a novel cow urine-based ageing approach for CA MP_f has been explored to enhance the ageing properties, which was not previously the subject of any research. Notably, the cow urine-aged CA MP_f demonstrated a remarkable increase in removal efficacy (96 %) for Pb (II), compared to the pristine CA MP_f. The lower half-life capacity of 1.748 min and higher HCC of 60 mg/L obtained for aged CA MP_f revealed rapid adsorption potential and higher removal efficiency. The DOM investigation of pristine and cow urine-aged MP_f shows possible leaching of humic acid-like components as environmental pollutant “vectors.” CA MP_f's reusability as an adsorbent guarantees a sustainable approach and is aligned with the Sustainable Development Goal.

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引用次数: 0

Azobisisobutyronitrile-induced biocarbon with high edge-nitrogen density: A metal-free redox-catalyst for electrochemical detection and reduction of 4-nitrophenol

IF 8.6 2区工程技术 Q1 ENERGY & FUELS

Sustainable Materials and Technologies

Pub Date : 2025-02-21 DOI: 10.1016/j.susmat.2025.e01304

Pooja V. Chavan, Anteneh F. Baye, Pramod V. Rathod, Hern Kim

Enhancing the specific nitrogen dopant concentration within the sp²-C domain of carbon materials is a promising approach to developing metal-free redox catalysts for electrochemical detection and remediation, thereby eliminating the need for toxic chemicals and complex procedures. However, achieving precise control over the type and concentration of nitrogen within the sp²-C domain during pyrolysis remains challenging. In this study, we synthesized unique nitrogen-doped biocarbons (AIBN_XOC) by pyrolyzing orange peel waste with azobisisobutyronitrile (AIBN) under nitrogen atmosphere, introducing AIBN as a novel nitrogen dopant. These material were tested for electrochemical detection and reduction of 4-nitrophenol (4-NP). By varying the concentrations of AIBN (X), a nitrogen-rich carbon framework with distinctive functionalities, such as pyridinic-N, graphitic-N, and carbonyl (C=O) groups was achieved. These functionalities successfully enhanced electrochemical performance by facilitating accelerated electron transfer and increasing 4-NP adsorption. The optimized AIBN₁OC-modified glassy carbon electrode (AIBN₁OC/GCE) exhibited excellent sensing capabilities, with a low detection limit of 0.4 nM and strong selectivity against potential interferences. Additionally, AIBN_XOC were applied for the catalytic reduction of 4-NP to 4-aminophenol in the presence of NaBH₄, leveraging the synergistic effects of pyridinic-N and CO sites for efficient hydride (H^δ+/H^δ-) formation. Practical applicability was demonstrated by detecting 4-NP in river water samples, showcasing the material's potential for real-world environmental monitoring.

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引用次数: 0

Mixed fatty acid cellulose esters from diosmectite oxalate-assisted surface esterification. Investigating properties, techno-economics and sustainability

IF 8.6 2区工程技术 Q1 ENERGY & FUELS

Sustainable Materials and Technologies

Pub Date : 2025-02-21 DOI: 10.1016/j.susmat.2025.e01299

Muzamil Jalil Ahmed , Jaweria Ashfaq , Sarim Ahmed , Saeeda Nadir Ali , Ali Dad Chandio , Iftikhar Ahmed Channa

Preparation of fatty acid cellulose esters (FACEs) is much mired in high costs, process complexity and requirements for specialized handling and safety. The present work proposes a novel oxalic acid clay-assisted surface esterification of microcrystalline cellulose (MCC) in a two-stage modified Fischer-Speier Esterification. The proposed method has substantial potential as a process with high reactant recyclability, esterification degree and FACEs with high degree of substitutions, ca. 0.86–2.16. The coconut oil esterifying agent rich in C₁₂-C₁₄ fatty acids has been directly used, reducing the need for derivatization steps. Optimization has been performed in terms of %weight proportions of the co-reactant, time, temperature, and the feedstock. FTIR, ¹H NMR and ¹³C NMR confirm the synthesis of a mixed FACE having either lauroyl or myristoyl fatty acid groups, in combination or by themselves. Thermal and XRD characterization further reveals high thermal stability up to ≥360 °C (by TGA/DTG) and crystallinity upto 23 % – 43 % (XRD) which provides significant appeal as potential thermoplastic material for additive utilization and blending. In this paper, we further demonstrate the applicability of the Green Chemistry Metrics (GCM) and the E-factor (ca. 0.18) approach to quantify how the above procedure compares with the tenets of Green Chemistry Principles, with reference to other reported methods to prepare FACE.

Synopsis

The article relates to sustainability in chemistry regarding novel cellulose modification characterized by high reactant recyclability, OH conversion and cost-effective use of green reagents and auxiliaries.

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引用次数: 0

Aqueous synthesis of bio-based multifunctional additives for polylactic acid with flame retardation, expedited degradation and crystallization

IF 8.6 2区工程技术 Q1 ENERGY & FUELS

Sustainable Materials and Technologies

Pub Date : 2025-02-21 DOI: 10.1016/j.susmat.2025.e01313

Jun Lu, Juanjuan Su, Jian Han

Bio-based flame retardants have attracted significant attention in the flame retardant modification of polylactic acid (PLA). In this work, a bio-based flame retardant AA is controllably synthesized by ion exchange of arginine (Ar) and amino-trimethylene phosphonic acid (ATMP). The optimal interfacial compatibility and nano-size dispersion endow it with robust flame retardant and reinforcement effects simultaneously. The PLA/3AA composite, with the addition of only 3 wt% AA, exhibits a LOI of 28.5 % and a UL-94 of V-0 rating. Additionally, the tensile strength of PLA/3AA composites is up to 71 MPa, which is 14.3 % higher than that of pure PLA. Meanwhile, AA possesses the function of accelerating the decomposition and promoting the crystallization of PLA. This study paves a promising approach for the development of highly efficient bio-based flame retardant and its engineering application in PLA materials.

引用次数: 0

Sustainable multifunctional foams for cold-chain packaging: Stabilizing polyethylene glycol with cellulose and pomegranate peel for antibacterial protection and temperature control

IF 8.6 2区工程技术 Q1 ENERGY & FUELS

Sustainable Materials and Technologies

Pub Date : 2025-02-19 DOI: 10.1016/j.susmat.2025.e01312

Hossein Baniasadi , Roozbeh Abidnejad , Cristina D. Cruz , Ziba Fathi , Päivi Tammela , Eero Kontturi , Erlantz Lizundia

Here, we developed multifunctional, bio-based foams specifically designed for cold-chain packaging. Polyethylene glycol (PEG 400) is integrated as a phase change material within a cellulose and pomegranate peel matrix. The foams exhibited high porosity, low thermal conductivity, and effective thermal regulation with a phase transition at around 2 °C, storing approximately 65 J/g of latent heat. Importantly, the foams demonstrated stable thermal behavior across repeated heating-cooling cycles, with no leakage of PEG observed. Antibacterial testing revealed significant inhibition of Staphylococcus aureus, and antioxidant activity reached close to 100 %, underscoring the foams' potential for microbial control and oxidative stability in temperature-sensitive applications. A life cycle assessment further supported the environmental benefits, showing a 25 % reduction in carbon footprint compared to conventional petroleum-based foams. Additional benefits were achieved over benchmark foams when material criticality was considered. Overall, this work introduced a sustainable packaging solution for cold-chain transport, combining temperature stability, antibacterial and antioxidant activities, and reduced environmental impact.

在此，我们开发了专门用于冷链包装的多功能生物基泡沫。聚乙二醇（PEG 400）作为相变材料被集成在纤维素和石榴皮基质中。这种泡沫具有高孔隙率、低导热率和有效的热调节功能，在 2 °C 左右发生相变，可储存约 65 焦耳/克的潜热。重要的是，这种泡沫在反复加热-冷却循环中表现出稳定的热性能，没有观察到 PEG 泄漏。抗菌测试表明，这种泡沫对金黄色葡萄球菌有明显的抑制作用，抗氧化活性接近 100%，这表明这种泡沫在温度敏感型应用中具有控制微生物和氧化稳定性的潜力。生命周期评估进一步证实了其环境效益，与传统的石油基泡沫相比，碳足迹减少了 25%。考虑到材料的临界性，与基准泡沫相比，还取得了更多的优势。总之，这项工作为冷链运输引入了一种可持续的包装解决方案，将温度稳定性、抗菌和抗氧化活性以及减少对环境的影响结合在一起。

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引用次数: 0

Effect of polylimonene on the release behavior and physico-chemical properties of photo-cross-linkable alginate-based hydrogels

IF 8.6 2区工程技术 Q1 ENERGY & FUELS

Sustainable Materials and Technologies

Pub Date : 2025-02-19 DOI: 10.1016/j.susmat.2025.e01311

Roniérik Pioli Vieira , Guilherme Frey Schutz , Laurens Parmentier , Sandra Van Vlierberghe

Herein, we report the synthesis and characterization of methacryloyl-modified sodium alginate (AlgMA)-based hydrogels incorporating an antioxidant limonene-derived oligomer (PLM) for potential biomedical applications. ¹H NMR spectroscopy confirmed the successful synthesis of AlgMA, enabling hydrogel formation via in-situ photo-cross-linking in the presence of PLM. The effect of 2.5 %, 5 %, and 10 % PLM was meticulously assessed on the material's properties. High PLM loads tended to decrease the hydrogel storage modulus, changing from 4.4 kPa (AlgMA) to 2.2 kPa (AlgMA/PLM10), enabling tuning from stiff to softer materials. Both physical properties and HR-MAS ¹H NMR spectroscopy results indicated a decrease in cross-linking efficiency upon increasing PLM concentration, with double bonds conversion ranging from 91 % to 68 % depending on PLM load. Moreover, cytotoxicity evaluations revealed AlgMA/PLM5 as an upper threshold to maintain cell viability above 70 %, while AlgMA/PLM2.5 showed improved cytocompatibility. PLM release from hydrogels followed Weibull kinetics, experiencing a burst release followed by a sustained release phase, allowing for quick application to deliver antioxidants. Overall, AlgMA-based hydrogels incorporating PLM offer tunable physico-chemical properties, retained antioxidant activity, and a release profile within a defined therapeutic window, showcasing their potential as novel biomaterials exhibiting antioxidant properties.

{"title":"Effect of polylimonene on the release behavior and physico-chemical properties of photo-cross-linkable alginate-based hydrogels","authors":"Roniérik Pioli Vieira , Guilherme Frey Schutz , Laurens Parmentier , Sandra Van Vlierberghe","doi":"10.1016/j.susmat.2025.e01311","DOIUrl":"10.1016/j.susmat.2025.e01311","url":null,"abstract":"<div><div>Herein, we report the synthesis and characterization of methacryloyl-modified sodium alginate (AlgMA)-based hydrogels incorporating an antioxidant limonene-derived oligomer (PLM) for potential biomedical applications. <sup>1</sup>H NMR spectroscopy confirmed the successful synthesis of AlgMA, enabling hydrogel formation <em>via in-situ</em> photo-cross-linking in the presence of PLM. The effect of 2.5 %, 5 %, and 10 % PLM was meticulously assessed on the material's properties. High PLM loads tended to decrease the hydrogel storage modulus, changing from 4.4 kPa (AlgMA) to 2.2 kPa (AlgMA/PLM10), enabling tuning from stiff to softer materials. Both physical properties and HR-MAS <sup>1</sup>H NMR spectroscopy results indicated a decrease in cross-linking efficiency upon increasing PLM concentration, with double bonds conversion ranging from 91 % to 68 % depending on PLM load. Moreover, cytotoxicity evaluations revealed AlgMA/PLM5 as an upper threshold to maintain cell viability above 70 %, while AlgMA/PLM2.5 showed improved cytocompatibility. PLM release from hydrogels followed Weibull kinetics, experiencing a burst release followed by a sustained release phase, allowing for quick application to deliver antioxidants. Overall, AlgMA-based hydrogels incorporating PLM offer tunable physico-chemical properties, retained antioxidant activity, and a release profile within a defined therapeutic window, showcasing their potential as novel biomaterials exhibiting antioxidant properties.</div></div>","PeriodicalId":22097,"journal":{"name":"Sustainable Materials and Technologies","volume":"43 ","pages":"Article e01311"},"PeriodicalIF":8.6,"publicationDate":"2025-02-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143464107","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}

引用次数: 0

Efficient UV-shielding coatings with carbon quantum dots

IF 8.6 2区工程技术 Q1 ENERGY & FUELS

Sustainable Materials and Technologies

Pub Date : 2025-02-19 DOI: 10.1016/j.susmat.2025.e01301

Clara Ponte , Lucas C. Grosche , Yury V. Kolen'ko , Juliana P.S. Sousa

Most polymers are susceptible to ultraviolet (UV) radiation, showing irreversible damage after extended exposures, which consequently affects the durability of paints. The currently used inorganic UV protective compounds struggle to remediate this problem due to their short UV absorption range and poor photostability, resulting in the deterioration of the polymeric coatings. Recently, carbon quantum dots (CQDs) have been raising great interest owing to their excellent UV absorption and photostability with high compatibility in different polymeric systems, making them promising UV absorbers.

The present work reports the synthesis of nitrogen-doped CQDs and their characterization by well-established techniques regarding their chemical composition, morphology, size, thermal stability, and optical properties. Different amounts of CQDs were incorporated in a commercial polyurethane (PU)-based matrix. The UV-shielding capacity, and chemical and mechanical properties of the developed coatings were evaluated. The present study reports the preparation of 40 μm thick CQDs@PU coatings with a high UV-shielding capacity of up to 98% under direct sunlight. Also, the prepared coatings were revealed to be resistant to abrasion and have good washability and adhesion to the metallic substrate.

{"title":"Efficient UV-shielding coatings with carbon quantum dots","authors":"Clara Ponte , Lucas C. Grosche , Yury V. Kolen'ko , Juliana P.S. Sousa","doi":"10.1016/j.susmat.2025.e01301","DOIUrl":"10.1016/j.susmat.2025.e01301","url":null,"abstract":"<div><div>Most polymers are susceptible to ultraviolet (UV) radiation, showing irreversible damage after extended exposures, which consequently affects the durability of paints. The currently used inorganic UV protective compounds struggle to remediate this problem due to their short UV absorption range and poor photostability, resulting in the deterioration of the polymeric coatings. Recently, carbon quantum dots (CQDs) have been raising great interest owing to their excellent UV absorption and photostability with high compatibility in different polymeric systems, making them promising UV absorbers.</div><div>The present work reports the synthesis of nitrogen-doped CQDs and their characterization by well-established techniques regarding their chemical composition, morphology, size, thermal stability, and optical properties. Different amounts of CQDs were incorporated in a commercial polyurethane (PU)-based matrix. The UV-shielding capacity, and chemical and mechanical properties of the developed coatings were evaluated. The present study reports the preparation of 40 μm thick CQDs@PU coatings with a high UV-shielding capacity of up to 98% under direct sunlight. Also, the prepared coatings were revealed to be resistant to abrasion and have good washability and adhesion to the metallic substrate.</div></div>","PeriodicalId":22097,"journal":{"name":"Sustainable Materials and Technologies","volume":"43 ","pages":"Article e01301"},"PeriodicalIF":8.6,"publicationDate":"2025-02-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143471701","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}

引用次数: 0

Intelligent color-varying windows: High contrast electrochromic triarylamine-based polyimide devices

IF 8.6 2区工程技术 Q1 ENERGY & FUELS

Sustainable Materials and Technologies

Pub Date : 2025-02-18 DOI: 10.1016/j.susmat.2025.e01303

Xiangwen Wu , Xiaopeng Zhang , Dongwei Zhang , Imran Murtaza , Dongwen Zou , Meimei Zhu , Yanan Zhu , Yaowu He , Hong Meng

Electrochromic devices (ECDs) spanning from colorless to black have garnered increasing attention in both fundamental scientific research and potential applications in recent years. To address the need for a multi-response optoelectronic material capable of efficient black conversion (black color/emission dual switching), we developed a novel triarylamine-based polyimide polymer, named CpO-PI, employing an innovative design strategy. This polymer incorporates two triphenylenediamine monomers linked to CpODA, resulting in exceptional properties. CpO-PI exhibits full wavelength absorption across the visible light spectrum in both natural and oxidized states, with boasting commendable solubility, thermal stability, and photoluminescence (PL) activity. Leveraging tungsten trioxide as the counter electrode in the optimized ECD, it achieved remarkable optical contrast (up to 99 %), distinct pure EC characteristics, robust memory performance, and high coloring efficiency (CE = 695 cm²·C⁻¹) in the energized oxidation state. Our study not only presents a pioneering approach towards developing efficient EC materials but also underscores the potential of utilizing triphenylamine chromophore-based polyimides in the next generation of electrochromic fluorescent devices. These findings are poised to invigorate further exploration in the field of EC technology.

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引用次数: 0

Heat generation in perovskite/CZTSSe tandem solar cells

IF 8.6 2区工程技术 Q1 ENERGY & FUELS

Sustainable Materials and Technologies

Pub Date : 2025-02-18 DOI: 10.1016/j.susmat.2025.e01308

Mohammad Bahrami , Mohammad Mahdi Najafali , Javad Maleki , Fatemeh Khalaji , Mansour Kanani , Mohammad Moaddeli , Nima E. Gorji

Tandem of Perovskite and other materials for solar cell structure have attracted the attention of many researchers. Here, we developed a strong coupled model to investigate the heat generation and thermal stability of Perovskite/CZTSSe Tandem Solar Cells. Studying the opto-electro-thermal (OET) properties of tandem solar cells is essential to better understand the optical absorption, carrier transport, and their thermodynamic behavior. In recent years, thermal losses in solar cells have received more attention and heat generation in solar cell structure has said to be effective on long-term stability and performance. Temperature distribution and heat generation of tandem solar cells has been rarely investigated in literature. The heat generation through Peltier heat, Thermalization heat, Joule heat, Non-radiative recombination heat and Surface recombination heat has been mapped using COMSOL. CZTSSe bottom cell generates more Joule heat (H_Joul_e = 224.65 W/m²) compared to Perovskite top cell (H_Joule = 78.3 W/m²). H_{Thermalization} = 166.34 W/m² and H_peltier = 136 W/m² are also higher in CZTSSe bottom cell compared to lower value in perovskite top cell (H_{Thermalization} = 58.73 W/m², H_peltier = 111.78 W/m²). Non-radiative recombination heat is negligible in Perovskite top cell compared to CZTSSe bottom cell (H_non-rad = 4.41 W/m²).

{"title":"Heat generation in perovskite/CZTSSe tandem solar cells","authors":"Mohammad Bahrami , Mohammad Mahdi Najafali , Javad Maleki , Fatemeh Khalaji , Mansour Kanani , Mohammad Moaddeli , Nima E. Gorji","doi":"10.1016/j.susmat.2025.e01308","DOIUrl":"10.1016/j.susmat.2025.e01308","url":null,"abstract":"<div><div>Tandem of Perovskite and other materials for solar cell structure have attracted the attention of many researchers. Here, we developed a strong coupled model to investigate the heat generation and thermal stability of Perovskite/CZTSSe Tandem Solar Cells. Studying the opto-electro-thermal (OET) properties of tandem solar cells is essential to better understand the optical absorption, carrier transport, and their thermodynamic behavior. In recent years, thermal losses in solar cells have received more attention and heat generation in solar cell structure has said to be effective on long-term stability and performance. Temperature distribution and heat generation of tandem solar cells has been rarely investigated in literature. The heat generation through Peltier heat, Thermalization heat, Joule heat, Non-radiative recombination heat and Surface recombination heat has been mapped using COMSOL. CZTSSe bottom cell generates more Joule heat (H<sub>Joul</sub><sub>e</sub> = 224.65 W/m<sup>2</sup>) compared to Perovskite top cell (H<sub>Joule</sub> = 78.3 W/m<sup>2</sup>). H<sub>Thermalization</sub> = 166.34 W/m<sup>2</sup> and H<sub>peltier</sub> = 136 W/m<sup>2</sup> are also higher in CZTSSe bottom cell compared to lower value in perovskite top cell (H<sub>Thermalization</sub> = 58.73 W/m<sup>2</sup>, H<sub>peltier</sub> = 111.78 W/m<sup>2</sup>). Non-radiative recombination heat is negligible in Perovskite top cell compared to CZTSSe bottom cell (H<sub>non-rad</sub> = 4.41 W/m<sup>2</sup>).</div></div>","PeriodicalId":22097,"journal":{"name":"Sustainable Materials and Technologies","volume":"43 ","pages":"Article e01308"},"PeriodicalIF":8.6,"publicationDate":"2025-02-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143488979","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Insight into anti-corrosion mechanism of copper in 0.5 M sulfuric acid solution via microwave-assisted synthesis of carbon quantum dots as novel inhibitors

IF 8.6 2区工程技术 Q1 ENERGY & FUELS

Sustainable Materials and Technologies

Pub Date : 2025-02-18 DOI: 10.1016/j.susmat.2025.e01305

Bochuan Tan , Yan Liu , Wenting Zhao , Zhili Gong , Xin Li , Wenpo Li , Xianghong Li , Lei Guo , Wenyan Zhang , Shijie Zhao , Riadh Marzouki , Qingwei Dai , Xi Chen

This study presents the development of a domestic, microwave-facilitated method for synthesizing carbon quantum dots (W-CDs), utilizing waste acorn caps and thiourea as dual precursors for nitrogen and sulfur doping. The corrosion inhibiting capability of W-CDs in 0.5 mol/L sulfuric acid solution towards copper was assessed, showcasing remarkable inhibition efficiencies of 98.89 %, 98.71 %, and 98.42 % at 298 K, 308 K, and 318 K respectively, when used at a concentration of 200 mg/L. The thermodynamic data of the adsorption process are discussed using the Arrhenius formula and the transition state equation. The adsorption of W-CDs onto copper was found to stem from a synergistic interplay of physical and chemical forces, consistent with the theoretical framework provided by the Langmuir adsorption model.

引用次数: 0

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