Materials Today Sustainability最新文献

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A green and low-cost approach to recover graphite for high-performance aluminum ion battery cathode 回收石墨用于高性能铝离子电池阴极的绿色低成本方法
IF 7.1 3区 材料科学
Materials Today Sustainability Pub Date : 2024-08-13 DOI: 10.1016/j.mtsust.2024.100957
Dai Zhang , Zhenshuai Wang , Xingyang Bao , Ruoyu Hong , Xing Zhang , Jinjia Xu
{"title":"A green and low-cost approach to recover graphite for high-performance aluminum ion battery cathode","authors":"Dai Zhang ,&nbsp;Zhenshuai Wang ,&nbsp;Xingyang Bao ,&nbsp;Ruoyu Hong ,&nbsp;Xing Zhang ,&nbsp;Jinjia Xu","doi":"10.1016/j.mtsust.2024.100957","DOIUrl":"10.1016/j.mtsust.2024.100957","url":null,"abstract":"<div><p>The recovery of spent graphite (SG) from lithium-ion batteries (LIBs) has been neglected due to its relatively low value and the lack of effective recovery methods. In this study, a green and cost-effective water washing process was used to recycle the spent graphite of LIBs anode, and the recovered graphite (RG) was used as the cathode material of aluminum ion batteries (AIBs). The RG retained the integrated graphite structure after the water washing process, showing a slightly enlarged interlayer spacing. When used as a cathode material for AIBs, it exhibits better electrochemical performance than commercial artificial graphite. At a current density of 50 mA g<sup>−1</sup>, the RG shows a high specific capacity of 95.2 mAh g<sup>−1</sup>. At a high current density of 2000 mA g<sup>−1</sup>, the specific capacity still maintains 51 mAh g<sup>−1</sup>, demonstrating excellent rate performance. Meanwhile, the average specific capacity of 72.5 mAh g<sup>−1</sup> was steadily cycled for 10,000 cycles at a current density of 1000 mA g<sup>−1</sup>, showing excellent cycle performance. This work provides a novel approach to the high-value-added application of spent graphite from lithium batteries and a development of high-performance graphite cathode materials for AIBs.</p></div>","PeriodicalId":18322,"journal":{"name":"Materials Today Sustainability","volume":"28 ","pages":"Article 100957"},"PeriodicalIF":7.1,"publicationDate":"2024-08-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142050022","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Solar brilliance unleashed: Maximizing performance of novel carbon-based Rb-doped CsSnI3 perovskite solar cells by gradient doping 释放太阳能光辉:通过梯度掺杂最大限度地提高新型碳基掺铒 CsSnI3 包晶体太阳能电池的性能
IF 7.1 3区 材料科学
Materials Today Sustainability Pub Date : 2024-08-13 DOI: 10.1016/j.mtsust.2024.100955
Neetika Yadav , Ayush Khare , Manish Kumar
{"title":"Solar brilliance unleashed: Maximizing performance of novel carbon-based Rb-doped CsSnI3 perovskite solar cells by gradient doping","authors":"Neetika Yadav ,&nbsp;Ayush Khare ,&nbsp;Manish Kumar","doi":"10.1016/j.mtsust.2024.100955","DOIUrl":"10.1016/j.mtsust.2024.100955","url":null,"abstract":"<div><p>The commercialization of state-of-the-art perovskite solar cells (PSCs) is hindered by lead toxicity, high production costs, and stability issues. The current study addresses these challenges by exploring lead-free Rb-doped CsSnI<sub>3</sub> perovskite with carbon-based materials. Herein, the impact of Rb-doping in CsSnI<sub>3</sub> perovskite has been thoroughly investigated on its structural, electrical, and optical properties via DFT studies. The results show that the incorporation of Rb-cation into CsSnI<sub>3</sub> significantly enhances the stability of the perovskite active layer (PAL), addressing the major challenge of degradation under environmental conditions. Further, DFT results are used to investigate the potential of Cs<sub>0.75</sub>Rb<sub>0.25</sub>SnI<sub>3</sub> as a PAL in device architecture FTO/ETL/Cs<sub>0.75</sub>Rb<sub>0.25</sub>SnI<sub>3</sub>/CNTs/C via SCAPS-1D with different electron transport layer (ETL) and carbon-based hole transport layer and back contact. Simulation results show that among different ETLs, WO<sub>3</sub> demonstrates the best performance. Further, we have employed a gradient doping (GD) strategy in PAL, dividing it into two sub-layers of thickness 200 nm each with different doping concentrations in the simulated device FTO/WO<sub>3</sub>/CsRbSnI<sub>3</sub>/CNTs/C. The aim of implementing GD is to strengthen the electric field and improve the energy band alignments which helps in reducing interfacial recombination. Besides, the impact of band-gap, interfacial defects, hysteresis effect, and C–V and C–F analysis are examined. The results reveal that at doping gradient G = 300, the device attains the best PCE of 19.05% with E<sub>g</sub> of 1.32 eV (PAL-1) and 1.22 eV (PAL-2). This study can serve as a benchmark for developing high-performance and low-cost CsRbSnI<sub>3</sub>-based PSCs utilizing a gradient doping strategy.</p></div>","PeriodicalId":18322,"journal":{"name":"Materials Today Sustainability","volume":"28 ","pages":"Article 100955"},"PeriodicalIF":7.1,"publicationDate":"2024-08-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142002343","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Carbon-based metal-oxides and MOFs for efficient CO2 detection/reduction to chemical/fuels 用于高效检测二氧化碳/将其还原为化学品/燃料的碳基金属氧化物和 MOFs
IF 7.1 3区 材料科学
Materials Today Sustainability Pub Date : 2024-08-06 DOI: 10.1016/j.mtsust.2024.100952
Deepak Kumar , Pashupati Pratap Neelratan , Anshika Gupta , Neeru Sharma , Manisha Sharma , Sangeeta Shukla , Satendra Pal Singh , Jong-Sung Yu , Ajeet Kaushik , Sanjeev K. Sharma
{"title":"Carbon-based metal-oxides and MOFs for efficient CO2 detection/reduction to chemical/fuels","authors":"Deepak Kumar ,&nbsp;Pashupati Pratap Neelratan ,&nbsp;Anshika Gupta ,&nbsp;Neeru Sharma ,&nbsp;Manisha Sharma ,&nbsp;Sangeeta Shukla ,&nbsp;Satendra Pal Singh ,&nbsp;Jong-Sung Yu ,&nbsp;Ajeet Kaushik ,&nbsp;Sanjeev K. Sharma","doi":"10.1016/j.mtsust.2024.100952","DOIUrl":"10.1016/j.mtsust.2024.100952","url":null,"abstract":"<div><p>This article explores nanocarbons (NCs) decorated metal oxides (MOx) and metal-organic frameworks (MOFs) hybrid nanosystems for efficient CO<sub>2</sub> detection and conversion to energy for environment sustainability. NCs have emerged as promising low-cost sensing and catalytic materials for conversion, which are decorated MOx and MOFs to fabricate hybrid nanosystems. These systems are considered for the next generation of CO<sub>2</sub> detection and value-added products using photo/electro/biological catalytic processes. To cater to state-of-the-art knowledge and aspects, this article summarises the research progress of functional C-based MOx and MOF hybrid materials as effective platforms for desired absorption/adsorption of CO<sub>2</sub> and conversion technologies, which will be part of a circular economy. At the end of this article, limitations, challenges, and future perspectives of C-based materials are summarized to understand and implement the knowledge for advanced sensing devices and efficient reduction of fuel/chemical production. NCs-decorated MOx hybrid materials have shown the potential for highly selective and fast-responsive CO<sub>2</sub> detectors due to their high carrier rates, nominal working temperature, chemical compositions, morphologies, large specific surface area, and high mechanical strength. C-based nanomaterials, such as CNTs, C<sub>60</sub>, C-QDs, and Gr, might be considered for flexible sensors that enhance stability and limit of detection (LOD). MOFs are highly recommended for CO<sub>2</sub> detection and reduction through adsorption, owing to their interconnected linker arms, cage-like structure, and extensive internal surface area. This article contributes to the ongoing research on innovative materials and strategies for addressing global environmental challenges and energy sustainability through advanced sensing and conversion technologies.</p></div>","PeriodicalId":18322,"journal":{"name":"Materials Today Sustainability","volume":"28 ","pages":"Article 100952"},"PeriodicalIF":7.1,"publicationDate":"2024-08-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141979788","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","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 the application of dolomite in membrane separation and beyond: A review on an abundant and versatile mineral 白云石在膜分离及其他领域应用的最新进展:综述一种丰富且用途广泛的矿物
IF 7.1 3区 材料科学
Materials Today Sustainability Pub Date : 2024-08-05 DOI: 10.1016/j.mtsust.2024.100951
Muhammed Sahal Siddique , N Awanis Hashim , Mohd Usman Mohd Junaidi , Aubaid Ullah , Rozita Yusoff , Mohamad Fairus Rabuni
{"title":"Recent advances in the application of dolomite in membrane separation and beyond: A review on an abundant and versatile mineral","authors":"Muhammed Sahal Siddique ,&nbsp;N Awanis Hashim ,&nbsp;Mohd Usman Mohd Junaidi ,&nbsp;Aubaid Ullah ,&nbsp;Rozita Yusoff ,&nbsp;Mohamad Fairus Rabuni","doi":"10.1016/j.mtsust.2024.100951","DOIUrl":"10.1016/j.mtsust.2024.100951","url":null,"abstract":"<div><p>Dolomite is a cost-effective and abundant natural mineral which is characterized by its versatility, non-toxicity, and simple handling. This review analyzes the available scientific literature and delves into multiple dimensions of dolomite. It begins by exploring the origin, structure, and properties of dolomite along with its extraction and purification. This is followed by a critical analysis of its application in various traditional and emerging fields. The traditional areas discussed include agriculture, construction, glass manufacturing, and refractories, with a focus on recent advancements. Similarly, emerging areas of dolomite application include adsorption of heavy metals, polymer engineering (as a mineral filler), catalysis, and membrane separation. Greater emphasis has been placed on the application of dolomite in ceramic membranes, where its composites have been observed to have excellent chemical and mechanical properties, along with high porosity. This is in addition to dolomite being very effective in all the areas mentioned in the article, including as a fertilizer, transesterification and tar removal catalyst, mineral filler, and adsorbent. By underscoring the versatility and benefits of dolomite, this review article serves as an impetus for future research on its sustainable applications.</p></div>","PeriodicalId":18322,"journal":{"name":"Materials Today Sustainability","volume":"28 ","pages":"Article 100951"},"PeriodicalIF":7.1,"publicationDate":"2024-08-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141947968","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Recycling, thermophysical characterisation and assessment of low-density polythene waste as feedstock for 3D printing 低密度聚乙烯废料作为 3D 打印原料的回收、热物理特性分析和评估
IF 7.1 3区 材料科学
Materials Today Sustainability Pub Date : 2024-08-03 DOI: 10.1016/j.mtsust.2024.100949
Rajdeep Singh Devra , Nishkarsh Srivastava , Madhu Vadali , Amit Arora
{"title":"Recycling, thermophysical characterisation and assessment of low-density polythene waste as feedstock for 3D printing","authors":"Rajdeep Singh Devra ,&nbsp;Nishkarsh Srivastava ,&nbsp;Madhu Vadali ,&nbsp;Amit Arora","doi":"10.1016/j.mtsust.2024.100949","DOIUrl":"10.1016/j.mtsust.2024.100949","url":null,"abstract":"<div><p>Low-density polyethene (LDPE) is extensively used in single-end-use food packaging and contributes significantly to global waste plastic. This study addresses this challenge by introducing a sustainable approach to reclaim and valorise waste LDPE from milk packaging by converting them into 3D printing filaments. The process involves extruding shredded LDPE pouches into continuous filaments using a modified thermal extruder. The research comprehensively investigates the effects of two key extrusion parameters, nozzle temperature and screw speed, on the resulting filament's physical and mechanical properties. Characterisation efforts include dimensional analysis, morphological evaluation, chemical integrity assessment, thermal stability analysis, and tensile testing. The results show that filaments remain consistently close to 1.75 mm diameter, which is required by most commercial FDM 3D printers. The filaments are chemically intact, thermally stable, and have high toughness across the range of extrusion parameters. The results and a preliminary demonstration of 3D printing indicate that the LDPE waste can be effectively transformed into consistent filaments that have the potential for 3D printing. A carbon footprint assessment underscores the environmental benefits of this approach, showing substantial reductions in estimated CO<sub>2</sub> emissions compared to conventional filament production methods. While challenges related to the quality of printed parts remain, the research opens avenues for optimizing 3D printing parameters and exploring multiple recycling cycles. This work represents a step towards sustainable plastic waste management and offers insights into transforming single-use plastic items into valuable resources.</p></div>","PeriodicalId":18322,"journal":{"name":"Materials Today Sustainability","volume":"28 ","pages":"Article 100949"},"PeriodicalIF":7.1,"publicationDate":"2024-08-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141979789","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Hybridization of CuFe2O4 by carbon microspheres with improved charge storage characteristics for high energy density solid-state hybrid supercapacitor 碳微球杂化 CuFe2O4 提高电荷存储特性,用于高能量密度固态混合超级电容器
IF 7.1 3区 材料科学
Materials Today Sustainability Pub Date : 2024-08-03 DOI: 10.1016/j.mtsust.2024.100950
J.J. Rushmittha , S. Radhika , Khalid A. Alrashidi , G. Maheshwaran , S. Dhinesh , S. Sambasivam
{"title":"Hybridization of CuFe2O4 by carbon microspheres with improved charge storage characteristics for high energy density solid-state hybrid supercapacitor","authors":"J.J. Rushmittha ,&nbsp;S. Radhika ,&nbsp;Khalid A. Alrashidi ,&nbsp;G. Maheshwaran ,&nbsp;S. Dhinesh ,&nbsp;S. Sambasivam","doi":"10.1016/j.mtsust.2024.100950","DOIUrl":"10.1016/j.mtsust.2024.100950","url":null,"abstract":"<div><p>The hybrid nanocomposite of Copper Ferrite/Carbon sphere (CuFe<sub>2</sub>O<sub>4</sub>/C-sphere NC) has been synthesized and their combined electrochemical activity for supercapacitors is achieved. XRD study reveals the average crystallite size of CuFe<sub>2</sub>O<sub>4</sub>/C-sphere NC as 112 nm. CuFe<sub>2</sub>O<sub>4</sub>/C-sphere NC provides a huge specific surface area of 532 m<sup>2</sup>/g. Cyclic voltammetry (CV) analysis exhibits the competitive specific capacity of CuFe<sub>2</sub>O<sub>4</sub>/C-sphere NC as 320 C/g at the sweep rate of 10 mV/s. The galvanostatic charge-discharge (GCD) study shows a good specific capacity of 264 C/g at 1 A/g and excellent cyclic stability of 82.4% for 5000 cycles. The CuFe<sub>2</sub>O<sub>4</sub>/C-sphere//AC solid-state hybrid supercapacitor provides a high specific capacity of 131 C/g along with remarkable energy density and power density of 40.9 Wh/kg and 11248 W/kg respectively.</p></div>","PeriodicalId":18322,"journal":{"name":"Materials Today Sustainability","volume":"28 ","pages":"Article 100950"},"PeriodicalIF":7.1,"publicationDate":"2024-08-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141947946","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Bifunctional electrolyte additive ammonium persulfate for high-performance aqueous zinc-ion batteries 用于高性能锌离子水电池的双功能电解质添加剂过硫酸铵
IF 7.1 3区 材料科学
Materials Today Sustainability Pub Date : 2024-08-03 DOI: 10.1016/j.mtsust.2024.100948
Yuanmei Xu , Xueshi Li , Xiatong Wang , Qijia Weng , Weijun Sun
{"title":"Bifunctional electrolyte additive ammonium persulfate for high-performance aqueous zinc-ion batteries","authors":"Yuanmei Xu ,&nbsp;Xueshi Li ,&nbsp;Xiatong Wang ,&nbsp;Qijia Weng ,&nbsp;Weijun Sun","doi":"10.1016/j.mtsust.2024.100948","DOIUrl":"10.1016/j.mtsust.2024.100948","url":null,"abstract":"<div><p>The main issues encountered in aqueous zinc-ion batteries (ZIBs) include corrosion and passivation of the zinc anode, electrolyte decomposition leading to hydrogen evolution, and dissolution consumption of cathode materials. This study proposes the use of ammonium persulfate (APS) as an electrolyte additive to enhance battery performance. The addition of APS not only adjusts the solvation structure of Zn<sup>2+</sup>, reduces water activity, but also allows NH<sup>4+</sup> ions to preferentially adsorb onto the surface of the zinc electrode, forming a protective layer and achieving dendrite-free zinc anodes. Results indicate that the inclusion of APS additive in the electrolyte can increase the specific capacity of zinc-ion batteries from 321 mAh g<sup>−1</sup> to 418 mAh g<sup>−1</sup>. Additionally, batteries with APS exhibit superior stability. Under low current density, the battery lifespan can reach 2100 h and a coulombic efficiency can up to 99.6%. This study delves into the design of multifunctional electrolyte additives and provides valuable insights for the development of practical ZIBs.</p></div>","PeriodicalId":18322,"journal":{"name":"Materials Today Sustainability","volume":"28 ","pages":"Article 100948"},"PeriodicalIF":7.1,"publicationDate":"2024-08-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141979787","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Photocatalytic Activity of TiO2-Carbon Nanocomposite Films Against Culex pipiens Mosquito Larvae Under Sunlight Irradiation 日光照射下二氧化钛-碳纳米复合膜对喙库蚊幼虫的光催化活性
IF 7.1 3区 材料科学
Materials Today Sustainability Pub Date : 2024-08-03 DOI: 10.1016/j.mtsust.2024.100945
Shaimaa A.A. Mo'men , Talal F. Qahtan , Amani M. Alansi , Abdulaziz A. Alanazi , Nawal A. Alfuhaid , Dina Salah , Ayat Yousery
{"title":"Photocatalytic Activity of TiO2-Carbon Nanocomposite Films Against Culex pipiens Mosquito Larvae Under Sunlight Irradiation","authors":"Shaimaa A.A. Mo'men ,&nbsp;Talal F. Qahtan ,&nbsp;Amani M. Alansi ,&nbsp;Abdulaziz A. Alanazi ,&nbsp;Nawal A. Alfuhaid ,&nbsp;Dina Salah ,&nbsp;Ayat Yousery","doi":"10.1016/j.mtsust.2024.100945","DOIUrl":"10.1016/j.mtsust.2024.100945","url":null,"abstract":"<div><p>Recent research has focused on developing eco-friendly nanomaterials to combat mosquito infestations. This study demonstrates the enhancement of titanium dioxide (TiO<sub>2</sub>) nanoparticles through the addition of carbon nanoparticles (C-NPs), significantly boosting their photocatalytic efficiency. This enhancement allows TiO<sub>2</sub> to purify water and act as an effective pesticide. Formulated TiO<sub>2</sub>-carbon (TiO<sub>2</sub>-C) nanocomposite films showed increased photocatalytic activity against third-instar larvae of Culex pipiens under natural sunlight. The addition of C-NPs improved sunlight absorption and reduced electron-hole recombination rates compared to pristine TiO<sub>2</sub> (P-TiO<sub>2</sub>), making it more effective for mosquito control. The superior performance of the TiO<sub>2</sub>-C nanocomposite was confirmed through X-ray Photoelectron Spectroscopy (XPS), UV-vis diffuse reflectance spectra (UV-vis DRS), and Photoluminescence emission (PL). These analyses confirmed successful carbon incorporation, expanding the absorption spectrum and enhancing optical properties. The UV-vis DRS spectra showed a decrease in the bandgap energy (Eg) of P-TiO<sub>2</sub> from 3.2 eV to 3.1 eV, improving its photocatalytic effectiveness under natural sunlight. Bioactivity tests, including catalase activity, reduced glutathione (GSH) colorimetric assay, and superoxide dismutase (SOD) assay, along with microscopic and histological examinations of treated larvae, indicated that the TiO<sub>2</sub>-C nanocomposite effectively reduces the mosquito population and causes significant physiological damage and abnormalities in larval structures and midgut cells. These findings highlight the enhanced photocatalytic capabilities of the TiO<sub>2</sub>-C nanocomposite, making it a novel and effective solution for mosquito control with significant public health and environmental benefits.</p></div>","PeriodicalId":18322,"journal":{"name":"Materials Today Sustainability","volume":"28 ","pages":"Article 100945"},"PeriodicalIF":7.1,"publicationDate":"2024-08-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141947969","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Harvesting high-performance electro-water oxidation and selective MB degradation through dual functional Gd2O3–La2O3 photo-electrocatalysts 通过双功能 Gd2O3-La2O3 光电催化剂获得高性能电氧化水和选择性降解甲基溴的能力
IF 7.8 3区 材料科学
Materials Today Sustainability Pub Date : 2024-08-03 DOI: 10.1016/j.mtsust.2024.100947
Sakthivel Chandrasekar, Nivetha Ambikapathi, Prabha Inbaraj, Qiang Jing, Bo Liu
{"title":"Harvesting high-performance electro-water oxidation and selective MB degradation through dual functional Gd2O3–La2O3 photo-electrocatalysts","authors":"Sakthivel Chandrasekar, Nivetha Ambikapathi, Prabha Inbaraj, Qiang Jing, Bo Liu","doi":"10.1016/j.mtsust.2024.100947","DOIUrl":"https://doi.org/10.1016/j.mtsust.2024.100947","url":null,"abstract":"Interestingly, catalytic oxygen evolution reaction (OER) in an alkaline medium with minimizing the overpotential is the most trustworthy electrocatalyst for the output of hydrogen energy from copious water electrochemical activity. Currently, amalgamated trivalent cations metal oxides have gained desirability as a low-cost anode electrocatalyst to replace noble metal-supported electrocatalysts for water oxidation and are also used for photo-degradation applications. In the present work, we have successfully synthesized GdO supported LaO composites via hydrothermal pathways for efficient and selective methylene blue (MB) degradation applications. XRD, UV–Vis DRS, FT-IR, XPS, SEM-EDX, HR-TEM, DLS, and BET analyzers confirmed the successful synthesis of photo-electrocatalysts. GdO–LaO composites achieved 5.66 and 3.37-fold larger surface areas than LaO and GdO, respectively. The results of the GdO supported LaO composite electrode demonstrated better performance under 1 M , and it exhibited a lower Tafel slope and overpotential of 72 mV dec and 310 mV at 10 mA cm. A chronoamperometry examination confirms that the fabricated GdO–LaO electrode has good stability at a fixed potential of 1.540 V vs. RHE for water oxidation. Although the, Gd inspired LaO electrode actively takes part in OER activity owing to its high C value of 40.222 μF cm. The selective degradation of MB dye using the GdO–LaO composite achieved an acceptable degradation efficiency of 84.80 % compared to other pollutants under UV-light irradiation for 120 min, and the specified pH condition is 9 for the degradation of MB dye, and it follows the first-order kinetics model. Notably, post-OER and photocatalytic results exhibited good stability and reusability characteristics. Therefore, the GdO–LaO catalyst can be used for real-time water oxidation and MB dye removal from polluted water.","PeriodicalId":18322,"journal":{"name":"Materials Today Sustainability","volume":"67 1","pages":""},"PeriodicalIF":7.8,"publicationDate":"2024-08-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141947972","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Carbon dots in the center of the spotlight: A full evaluation of their synthesis and understanding of their fundamental properties and applications 聚光灯下的碳点:全面评估碳点的合成,了解其基本特性和应用
IF 7.8 3区 材料科学
Materials Today Sustainability Pub Date : 2024-08-03 DOI: 10.1016/j.mtsust.2024.100937
M.C.M.D. de Conti, A.A. de Castro, L.C. Assis, N.M. Lima, A. Escriba, E. Nepovimova, K. Kuca, T.C. Ramalho, F.A. La Porta
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