Near-infrared (NIR) light absorption is essential for the effective utilization of photothermal solar energy, which is realized via the surface plasmon resonance of a high density of free charge carriers (FCCs). Herein, we demonstrate that S-scheme interfacial junctions (IJs) can substantially increase the FCC density and intensify absorption of silicates from the ultraviolet to NIR region. Numerous p–n IJs with S-scheme types are constructed within sheet-like Co3O4–Co2SiO4 nanoparticles, exceptionally boosting the light absorption capability over the entire solar spectrum. Moreover, this absorber can improve the photothermal performance of Mg(OH)2 via a mixture of Mg(OH)2–(Co3O4–Co2SiO4) composite. The photothermal dehydration conversion of Mg(OH)2 in this mixture considerably improves by 6.7 times under 30-min irradiation. The reversibility of the photothermal hydration–dehydration cycles of Mg(OH)2 improves by 18.3 times, and the thermal storage kinetics substantially improves via the reduction of the activation energy of dehydration (reduction of 25.4 %). Results indicate that Mg(OH)2–Co3O4–Co2SiO4 is a promising candidate for a one-step system of photothermal conversion and energy storage.
{"title":"Exceptionally boosted absorption of silicates by interfacial junctions and direct light–heat–energy storage using Mg(OH)2–(Co2SiO4–Co3O4)","authors":"Rui-Min Hao, En-Xu Ren, Wei Ran, Zhi-Bin Xu, Qin-Pei Wu","doi":"10.1016/j.susmat.2024.e01142","DOIUrl":"10.1016/j.susmat.2024.e01142","url":null,"abstract":"<div><div>Near-infrared (NIR) light absorption is essential for the effective utilization of photothermal solar energy, which is realized via the surface plasmon resonance of a high density of free charge carriers (FCCs). Herein, we demonstrate that S-scheme interfacial junctions (IJs) can substantially increase the FCC density and intensify absorption of silicates from the ultraviolet to NIR region. Numerous p–n IJs with S-scheme types are constructed within sheet-like Co<sub>3</sub>O<sub>4</sub>–Co<sub>2</sub>SiO<sub>4</sub> nanoparticles, exceptionally boosting the light absorption capability over the entire solar spectrum. Moreover, this absorber can improve the photothermal performance of Mg(OH)<sub>2</sub> via a mixture of Mg(OH)<sub>2</sub>–(Co<sub>3</sub>O<sub>4</sub>–Co<sub>2</sub>SiO<sub>4</sub>) composite. The photothermal dehydration conversion of Mg(OH)<sub>2</sub> in this mixture considerably improves by 6.7 times under 30-min irradiation. The reversibility of the photothermal hydration–dehydration cycles of Mg(OH)<sub>2</sub> improves by 18.3 times, and the thermal storage kinetics substantially improves via the reduction of the activation energy of dehydration (reduction of 25.4 %). Results indicate that Mg(OH)<sub>2</sub>–Co<sub>3</sub>O<sub>4</sub>–Co<sub>2</sub>SiO<sub>4</sub> is a promising candidate for a one-step system of photothermal conversion and energy storage.</div></div>","PeriodicalId":22097,"journal":{"name":"Sustainable Materials and Technologies","volume":"42 ","pages":"Article e01142"},"PeriodicalIF":8.6,"publicationDate":"2024-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142433295","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}
Carbonized carbons (CC) derived from cabbage were self-activated via a carbonization process at 500–900 °C in Ar. CC synthesized at 800 °C (CC-800), containing KCl, CaCO3, Ca(ClO)2, K2SO4, and Ca5(PO4)3(OH), has the highest specific surface area (SBET, 130.04 m2 g−1), a high specific capacitance (64.06 F g−1), and an excellent rate capability (65.12 %). After washing the CC-800 powder in either deionized (DI) water (AC-DI) or hydrochloric acid (HCl) followed by DI water (AC-HCl-DI), SBET values increased to 919.22 and 1146.51 m2 g−1, respectively. KCl, Ca(ClO)2, and K2SO4 are removed from the AC-DI, whereas all compounds are washed from the AC-HCl-DI. Removing these compounds enlarges SBET values, specific capacitance (114.47 F g−1 at 0.5 A g−1), and rate capability (68.95 %). A high capacitance retention of 97.56 % after 20,000 cycles was achieved from the AC-HCl-DI electrode with 6 M KOH. 0.6 M NaCl and seawater were applied as green electrolytes with the AC-HCl-DI electrode, resulting in the promising specific capacitance of 116.89 and 102.21 F g−1 at 0.5 A g−1, respectively. Symmetric AC-HCl-DI/seawater/AC-HCl-DI cell gives a high energy density of 2.32 Wh kg−1 at a large power density of 0.25 kW kg−1. The four serial AC-HCl-DI/seawater/AC-HCl-DI coin cells could light an LED over 60 s.
在氩气中于 500-900 °C的碳化过程中，从卷心菜中提取的碳化碳（CC）被自活化。在 800 °C 下合成的 CC（CC-800）含有 KCl、CaCO3、Ca(ClO)2、K2SO4 和 Ca5(PO4)3(OH)，具有最高的比表面积（SBET，130.04 m2 g-1）、高比电容（64.06 F g-1）和出色的速率能力（65.12 %）。用去离子水（AC-DI）或盐酸（HCl）再用去离子水（AC-HCl-DI）洗涤 CC-800 粉末后，SBET 值分别增至 919.22 和 1146.51 m2 g-1。从 AC-DI 中除去了 KCl、Ca(ClO)2 和 K2SO4，而从 AC-HCl-DI 中洗掉了所有化合物。除去这些化合物后，SBET 值、比电容（0.5 A g-1 时为 114.47 F g-1）和速率能力（68.95 %）均有所提高。使用 6 M KOH 的 AC-HCl-DI 电极在 20,000 次循环后的电容保持率高达 97.56%。AC-HCl-DI 电极采用 0.6 M NaCl 和海水作为绿色电解质，在 0.5 A g-1 的条件下，比电容分别达到 116.89 和 102.21 F g-1。对称的 AC-HCl-DI/seawater/AC-HCl-DI 电池在 0.25 kW kg-1 的大功率密度下可提供 2.32 Wh kg-1 的高能量密度。四个串联 AC-HCl-DI/seawater/AC-HCl-DI 纽扣电池可在 60 秒内点亮一个 LED。
{"title":"Self-activation of carbons derived from bio-waste cabbage for a green supercapacitor based on seawater electrolyte","authors":"Authit Phakkhawan , Aparporn Sakulkalavek , Narong Chanlek , Supinya Nijpanich , Yuvarat Ngernyen , Siritorn Buranurak , Samuk Pimanpang , Pawinee Klangtakai","doi":"10.1016/j.susmat.2024.e01143","DOIUrl":"10.1016/j.susmat.2024.e01143","url":null,"abstract":"<div><div>Carbonized carbons (CC) derived from cabbage were self-activated via a carbonization process at 500–900 °C in Ar. CC synthesized at 800 °C (CC-800), containing KCl, CaCO<sub>3</sub>, Ca(ClO)<sub>2</sub>, K<sub>2</sub>SO<sub>4</sub>, and Ca<sub>5</sub>(PO<sub>4</sub>)<sub>3</sub>(OH), has the highest specific surface area (<em>S</em><sub>BET</sub>, 130.04 m<sup>2</sup> g<sup>−1</sup>), a high specific capacitance (64.06 F g<sup>−1</sup>), and an excellent rate capability (65.12 %). After washing the CC-800 powder in either deionized (DI) water (AC-DI) or hydrochloric acid (HCl) followed by DI water (AC-HCl-DI), <em>S</em><sub>BET</sub> values increased to 919.22 and 1146.51 m<sup>2</sup> g<sup>−1</sup>, respectively. KCl, Ca(ClO)<sub>2</sub>, and K<sub>2</sub>SO<sub>4</sub> are removed from the AC-DI, whereas all compounds are washed from the AC-HCl-DI. Removing these compounds enlarges <em>S</em><sub>BET</sub> values, specific capacitance (114.47 F g<sup>−1</sup> at 0.5 A g<sup>−1</sup>), and rate capability (68.95 %). A high capacitance retention of 97.56 % after 20,000 cycles was achieved from the AC-HCl-DI electrode with 6 M KOH. 0.6 M NaCl and seawater were applied as green electrolytes with the AC-HCl-DI electrode, resulting in the promising specific capacitance of 116.89 and 102.21 F g<sup>−1</sup> at 0.5 A g<sup>−1</sup>, respectively. Symmetric AC-HCl-DI/seawater/AC-HCl-DI cell gives a high energy density of 2.32 Wh kg<sup>−1</sup> at a large power density of 0.25 kW kg<sup>−1</sup>. The four serial AC-HCl-DI/seawater/AC-HCl-DI coin cells could light an LED over 60 s.</div></div>","PeriodicalId":22097,"journal":{"name":"Sustainable Materials and Technologies","volume":"42 ","pages":"Article e01143"},"PeriodicalIF":8.6,"publicationDate":"2024-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142532032","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}
Pub Date : 2024-10-09DOI: 10.1016/j.susmat.2024.e01138
Madhurima Das , Avishek Ghatak , Preetam Guha Ray , Urszula Stachewicz
The escalating growth of industries, population, and urban culture has exacerbated the global challenge of contaminated water due to hazardous organic dyes. One such noxious dye, rhodamine, poses a significant threat to human health and has consequently prompted extensive research into its removal from wastewater. Nanostructured ZnO emerges as a promising photocatalyst for tackling such hazardous colorants, owing to its exceptional performance and heightened surface reactivity. This review article comprehensively examines the photocatalytic removal of rhodamine dye by various ZnO nanomaterial-based catalysts over the past few decades. The primary objective is to investigate the impact of different synthesis techniques and modifications of ZnO, including doping with metal ions, carbon, and sulfur, or the creation of composites with various low-dimensional carbon materials, metal oxides, metal sulfides, and polymers. These strategies have been explored to enhance the efficacy of rhodamine dye remediation from wastewater by harnessing the improved photocatalytic performance of ZnO nanomaterials. The review delves into recent literature reports, highlighting observed results and key findings addressing critical challenges and outlines prospects for ZnO-based photocatalysts in rhodamine dye remediation. It becomes evident that evolving synthesis methods and optimizing the heterojunction of ZnO photocatalysts are essential for advancing the efficacy of rhodamine dye removal and contributing to the creation of a cleaner and greener environment.
{"title":"Advancements in ZnO-based photocatalysts for effective rhodamine dye removal from water","authors":"Madhurima Das , Avishek Ghatak , Preetam Guha Ray , Urszula Stachewicz","doi":"10.1016/j.susmat.2024.e01138","DOIUrl":"10.1016/j.susmat.2024.e01138","url":null,"abstract":"<div><div>The escalating growth of industries, population, and urban culture has exacerbated the global challenge of contaminated water due to hazardous organic dyes. One such noxious dye, rhodamine, poses a significant threat to human health and has consequently prompted extensive research into its removal from wastewater. Nanostructured ZnO emerges as a promising photocatalyst for tackling such hazardous colorants, owing to its exceptional performance and heightened surface reactivity. This review article comprehensively examines the photocatalytic removal of rhodamine dye by various ZnO nanomaterial-based catalysts over the past few decades. The primary objective is to investigate the impact of different synthesis techniques and modifications of ZnO, including doping with metal ions, carbon, and sulfur, or the creation of composites with various low-dimensional carbon materials, metal oxides, metal sulfides, and polymers. These strategies have been explored to enhance the efficacy of rhodamine dye remediation from wastewater by harnessing the improved photocatalytic performance of ZnO nanomaterials. The review delves into recent literature reports, highlighting observed results and key findings addressing critical challenges and outlines prospects for ZnO-based photocatalysts in rhodamine dye remediation. It becomes evident that evolving synthesis methods and optimizing the heterojunction of ZnO photocatalysts are essential for advancing the efficacy of rhodamine dye removal and contributing to the creation of a cleaner and greener environment.</div></div>","PeriodicalId":22097,"journal":{"name":"Sustainable Materials and Technologies","volume":"42 ","pages":"Article e01138"},"PeriodicalIF":8.6,"publicationDate":"2024-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142442028","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}
As the demand for large lithium-ion batteries (LIBs) for automotive and other applications rapidly grows, recycling of electrode materials has become essential owing to the large amount of waste material generated by battery manufacturing (e.g., battery scrap) and end-of-life (EOL) batteries. While there have been many studies on recycling of cathode materials, we propose a direct recycling process for anode material using TiNb2O7 (TNO) as the active material, as it offers high capacity and long life. Calcination was introduced to separate the anode active material from the current-collecting foil, and a regeneration method was investigated for TNO anodes from scrap and EOL battery waste. After calcination, the active material can be easily separated from the aluminum current-collecting foil owing to the binder disappearing. The structure of the active material was investigated using X-ray diffraction and scanning electron microscopy. TNO active material recycled from scrap and EOL was found to maintain the structure of virgin material. A cell was fabricated using recycled TNO and cell performance was evaluated. The cell capacity and rate capacity were found to be almost equivalent to those of virgin material. In terms of the carbon footprints of products (CFP), CO2 emissions during the recycling process were compared between recycled material and virgin material, and it was found that CO2 emissions were reduced to 0.7-CO2eq/kg for scrap material and 3.8-CO2eq/kg for EOL waste material, compared with 4.8-CO2eq/kg for virgin material. Thus, the feasibility of low CO2 emissions during TNO anode direct recycling was confirmed in principle. A simple and low CO2 emission recycling loop can thus be constructed by employing a stable TNO active material structure and direct-recycling process with calcination.
{"title":"Direct recycling of anode active material from Li-ion batteries using TiNb2O7 anode","authors":"Asato Kondo, Taro Fukaya, Ryosuke Yagi, Keigo Hoshina, Yasuhiro Harada, Norio Takami","doi":"10.1016/j.susmat.2024.e01140","DOIUrl":"10.1016/j.susmat.2024.e01140","url":null,"abstract":"<div><div>As the demand for large lithium-ion batteries (LIBs) for automotive and other applications rapidly grows, recycling of electrode materials has become essential owing to the large amount of waste material generated by battery manufacturing (e.g., battery scrap) and end-of-life (EOL) batteries. While there have been many studies on recycling of cathode materials, we propose a direct recycling process for anode material using TiNb<sub>2</sub>O<sub>7</sub> (TNO) as the active material, as it offers high capacity and long life. Calcination was introduced to separate the anode active material from the current-collecting foil, and a regeneration method was investigated for TNO anodes from scrap and EOL battery waste. After calcination, the active material can be easily separated from the aluminum current-collecting foil owing to the binder disappearing. The structure of the active material was investigated using X-ray diffraction and scanning electron microscopy. TNO active material recycled from scrap and EOL was found to maintain the structure of virgin material. A cell was fabricated using recycled TNO and cell performance was evaluated. The cell capacity and rate capacity were found to be almost equivalent to those of virgin material. In terms of the carbon footprints of products (CFP), CO<sub>2</sub> emissions during the recycling process were compared between recycled material and virgin material, and it was found that CO<sub>2</sub> emissions were reduced to 0.7-CO<sub>2</sub>eq/kg for scrap material and 3.8-CO<sub>2</sub>eq/kg for EOL waste material, compared with 4.8-CO<sub>2</sub>eq/kg for virgin material. Thus, the feasibility of low CO<sub>2</sub> emissions during TNO anode direct recycling was confirmed in principle. A simple and low CO<sub>2</sub> emission recycling loop can thus be constructed by employing a stable TNO active material structure and direct-recycling process with calcination.</div></div>","PeriodicalId":22097,"journal":{"name":"Sustainable Materials and Technologies","volume":"42 ","pages":"Article e01140"},"PeriodicalIF":8.6,"publicationDate":"2024-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142442027","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}
Pub Date : 2024-10-09DOI: 10.1016/j.susmat.2024.e01141
Dasom Jeong , Seong Cheon Kim , Min Gu Kang , Sung Nam Lim , Ju Young Woo , Haejin Hwang , Siyoung Q. Choi , Jeasung Park
Renewable and environmentally benign hydrophilic carbon quantum dots (CQDs) were synthesized using a hydrothermal method. Subsequently, composite membranes of Nafion/CQDs, demonstrating outstanding performance metrics for vanadium redox flow batteries (VRFBs), were developed. Employing a straightforward solution-casting technique, these membranes exhibited superior proton conductivity and reduced vanadium ion permeability. Tested at an elevated current density of 120 mA/cm2, the single cell VRFB integrated with the optimized Nafion/CQDs composite membrane outperformed its commercial counterparts, achieving a high coulombic efficiency of approximately 96.13 % and an energy efficiency of nearly 85.46 %. Moreover, it demonstrated significant cycle life, retaining about 17.1 % of its capacity after 100 cycles, compared to 27.2 % capacity retention for the N-recast membrane over the same period. These results position the Nafion/CQDs composite membrane as a formidable contender in the VRFB domain, emphasizing its potential for broader commercial applications.
{"title":"Renewable and hydrophilic carbon quantum dots derived from human hair as the filler in Nafion composite membrane for vanadium redox flow battery application","authors":"Dasom Jeong , Seong Cheon Kim , Min Gu Kang , Sung Nam Lim , Ju Young Woo , Haejin Hwang , Siyoung Q. Choi , Jeasung Park","doi":"10.1016/j.susmat.2024.e01141","DOIUrl":"10.1016/j.susmat.2024.e01141","url":null,"abstract":"<div><div>Renewable and environmentally benign hydrophilic carbon quantum dots (CQDs) were synthesized using a hydrothermal method. Subsequently, composite membranes of Nafion/CQDs, demonstrating outstanding performance metrics for vanadium redox flow batteries (VRFBs), were developed. Employing a straightforward solution-casting technique, these membranes exhibited superior proton conductivity and reduced vanadium ion permeability. Tested at an elevated current density of 120 mA/cm<sup>2</sup>, the single cell VRFB integrated with the optimized Nafion/CQDs composite membrane outperformed its commercial counterparts, achieving a high coulombic efficiency of approximately 96.13 % and an energy efficiency of nearly 85.46 %. Moreover, it demonstrated significant cycle life, retaining about 17.1 % of its capacity after 100 cycles, compared to 27.2 % capacity retention for the N-recast membrane over the same period. These results position the Nafion/CQDs composite membrane as a formidable contender in the VRFB domain, emphasizing its potential for broader commercial applications.</div></div>","PeriodicalId":22097,"journal":{"name":"Sustainable Materials and Technologies","volume":"42 ","pages":"Article e01141"},"PeriodicalIF":8.6,"publicationDate":"2024-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142433294","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}
Pub Date : 2024-10-05DOI: 10.1016/j.susmat.2024.e01136
Ruijiang Sun , Bo Hou , Junjie Huang , Xiguang Li , Chang Liu , Mingjun Chen , Chunya Wu
Ice accumulation on the metallic surface usually results in seriously economic losses, resource wastes and even hazard accidents. Superhydrophobic surfaces (SHSs) are recognized as one of the most promising candidates for water repellence and anti-icing, offering both environmental and economic advantages over the traditional methods. The ordered microstructure arrays with controllable parameters play an essential role in mechanism analysis, rational design and reproducible construction of SHSs. However, the efficient fabrication of ordered microarrays on metal substrates with high resolution and high accuracy is still fraught with significant challenges. Here, a multilevel micro/nano surface with rectangular micropillars was fabricated on copper substrate by the integration of micro milling and chemical etching, which exhibits superior superhydrophobicity with water contact angle of 171.1 ± 1.5° and sliding angle of 2.2 ± 0.7°. The developed deburring scheme makes an outstanding contribution to the in-situ removal of milling burrs generated on the top of micropillars. The variation in surface wettability with microarray geometry and etching conditions indicates that a favorable surface morphology is crucial for improving the water repellency of the surface. The results of the durability experiment and the self-cleaning test demonstrate the robust comprehensive stability of the prepared SHSs against moisture, high temperature and mechanical wear, as well as the superior fouling resistance against solid and liquid contaminants, which is mainly ascribed to the hierarchical micro/nanostructures. Moreover, the present micro/nanostructures are also demonstrated to be capable of enhancing the delayed icing performance of the copper surface, with the freezing time of a 5 μL water droplet being 519.86 ± 13.53 s. Meanwhile, the superhydrophobic copper surfaces exhibit remarkable anti-icing behavior against saline solutions, as evidenced by the freezing time of 1078.42 ± 31.24 s for a 5 μL NaCl droplet. This work provides a sustainable and high-precision approach for the fabrication of metal-based SHSs, expecting to advance the theoretical research and industrial applications of anti-icing functional surfaces.
{"title":"Wettability/anti-icing properties of hierarchical Micro/nanostructured copper surface prepared by Micro milling and chemical etching","authors":"Ruijiang Sun , Bo Hou , Junjie Huang , Xiguang Li , Chang Liu , Mingjun Chen , Chunya Wu","doi":"10.1016/j.susmat.2024.e01136","DOIUrl":"10.1016/j.susmat.2024.e01136","url":null,"abstract":"<div><div>Ice accumulation on the metallic surface usually results in seriously economic losses, resource wastes and even hazard accidents. Superhydrophobic surfaces (SHSs) are recognized as one of the most promising candidates for water repellence and anti-icing, offering both environmental and economic advantages over the traditional methods. The ordered microstructure arrays with controllable parameters play an essential role in mechanism analysis, rational design and reproducible construction of SHSs. However, the efficient fabrication of ordered microarrays on metal substrates with high resolution and high accuracy is still fraught with significant challenges. Here, a multilevel micro/nano surface with rectangular micropillars was fabricated on copper substrate by the integration of micro milling and chemical etching, which exhibits superior superhydrophobicity with water contact angle of 171.1 ± 1.5° and sliding angle of 2.2 ± 0.7°. The developed deburring scheme makes an outstanding contribution to the in-situ removal of milling burrs generated on the top of micropillars. The variation in surface wettability with microarray geometry and etching conditions indicates that a favorable surface morphology is crucial for improving the water repellency of the surface. The results of the durability experiment and the self-cleaning test demonstrate the robust comprehensive stability of the prepared SHSs against moisture, high temperature and mechanical wear, as well as the superior fouling resistance against solid and liquid contaminants, which is mainly ascribed to the hierarchical micro/nanostructures. Moreover, the present micro/nanostructures are also demonstrated to be capable of enhancing the delayed icing performance of the copper surface, with the freezing time of a 5 μL water droplet being 519.86 ± 13.53 s. Meanwhile, the superhydrophobic copper surfaces exhibit remarkable anti-icing behavior against saline solutions, as evidenced by the freezing time of 1078.42 ± 31.24 s for a 5 μL NaCl droplet. This work provides a sustainable and high-precision approach for the fabrication of metal-based SHSs, expecting to advance the theoretical research and industrial applications of anti-icing functional surfaces.</div></div>","PeriodicalId":22097,"journal":{"name":"Sustainable Materials and Technologies","volume":"42 ","pages":"Article e01136"},"PeriodicalIF":8.6,"publicationDate":"2024-10-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142418585","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}
Pub Date : 2024-10-05DOI: 10.1016/j.susmat.2024.e01135
M. Enterría , L. Medinilla , S.N. Faisal , Y. Zhang , J.M. López del Amo , I. Ruiz De Larramendi , L. Lezama , D.L. Officer , G.G. Wallace , N. Ortiz-Vitoriano
Sodium‑oxygen (NaO2) batteries are promising high-capacity devices for future energy storage, replacing the unsustainable dependence on fossil fuels. These batteries convert molecular oxygen into sodium superoxide (NaO2) which is deposited during discharge at the cathode. It has been demonstrated that the morphology of the discharged NaO2 is critical for battery performance, as the insulating nature of these solid products leads to premature cell death by passivating the cathode surface at high discharge capacities. These constraints seriously affect the battery rechargeability by hindering the oxidation of NaO2 during charge. In this context, the size and distribution of the discharged solid particles is crucial for the implementation of these batteries. Here, we present a template-assisted electro crystallization of NaO2 in NaO2 batteries by using a graphene cathode enriched with atomic defects. The high free energy of such atomic defects induces the nucleation of few-micron sized NaO2 cubes strategically localized at dispersed points of the surface. The high dispersion of small superoxide particles, by a surface-controlled crystallization, increases the cyclability of the battery at high discharge capacities, which is the major bottleneck in metal-air battery technology.
{"title":"Surface-controlled deposition of discharge products in NaO2 batteries using a defect-rich graphene cathode","authors":"M. Enterría , L. Medinilla , S.N. Faisal , Y. Zhang , J.M. López del Amo , I. Ruiz De Larramendi , L. Lezama , D.L. Officer , G.G. Wallace , N. Ortiz-Vitoriano","doi":"10.1016/j.susmat.2024.e01135","DOIUrl":"10.1016/j.susmat.2024.e01135","url":null,"abstract":"<div><div>Sodium‑oxygen (Na<img>O<sub>2</sub>) batteries are promising high-capacity devices for future energy storage, replacing the unsustainable dependence on fossil fuels. These batteries convert molecular oxygen into sodium superoxide (NaO<sub>2</sub>) which is deposited during discharge at the cathode. It has been demonstrated that the morphology of the discharged NaO<sub>2</sub> is critical for battery performance, as the insulating nature of these solid products leads to premature cell death by passivating the cathode surface at high discharge capacities. These constraints seriously affect the battery rechargeability by hindering the oxidation of NaO<sub>2</sub> during charge. In this context, the size and distribution of the discharged solid particles is crucial for the implementation of these batteries. Here, we present a template-assisted electro crystallization of NaO<sub>2</sub> in Na<img>O<sub>2</sub> batteries by using a graphene cathode enriched with atomic defects. The high free energy of such atomic defects induces the nucleation of few-micron sized NaO<sub>2</sub> cubes strategically localized at dispersed points of the surface. The high dispersion of small superoxide particles, by a surface-controlled crystallization, increases the cyclability of the battery at high discharge capacities, which is the major bottleneck in metal-air battery technology.</div></div>","PeriodicalId":22097,"journal":{"name":"Sustainable Materials and Technologies","volume":"42 ","pages":"Article e01135"},"PeriodicalIF":8.6,"publicationDate":"2024-10-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142418583","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}
Pub Date : 2024-10-04DOI: 10.1016/j.susmat.2024.e01137
Yiu Lun Alan Tang, Jiali Yu, Cheng Hao Lee, Yanming Wang, Chi-Wai Kan
The feasibility of using different forms of limonene biosolvents as dyeing medium in rhamnolipid (RL) biosurfactant-based reverse micellar dyeing system for cotton fabrics is investigated, with different dyeing profiles. Experimental results reveal that limonene-dyed fabrics can achieve generally higher colour yield than water-dyed fabrics while samples dyed by one-step dyeing method could obtain higher colour yield, but poorer relative unlevelness index (RUI) values when compared with samples dyed by two-step method. The CIE L*a*b* value and reflectance of water-dyed and limonene-dyed samples were examined. The pH value of aqueous and non-aqueous dye liquor was measured. SEM images of limonene-dyed cotton fabrics and TEM images of reverse micelle morphology were evaluated. Washing and crocking fastness of the dyed samples were also assessed. The resulting evidence validate that limonene is feasible for reverse micellar reactive dyeing of cotton fabric with the use of RL biosurfactant and it can be one of the alternative solvents, making the dyeing process more natural, more biodegradable and environmentally more sustainable.
研究了在基于鼠李糖脂（RL）生物表面活性剂的棉织物反向胶束染色体系中使用不同形式的柠檬烯生物溶剂作为染色介质的可行性。实验结果表明，与水染织物相比，柠檬烯染色织物的得色率普遍较高，而采用一步染色法染色的样品得色率较高，但与采用两步染色法染色的样品相比，相对匀染指数（RUI）值较低。考察了水染和柠檬烯染色样品的 CIE L*a*b* 值和反射率。测量了水性和非水性染液的 pH 值。评估了柠檬素染色棉织物的 SEM 图像和反向胶束形态的 TEM 图像。此外，还评估了染色样品的耐洗牢度和耐克牢度。结果证明，使用 RL 生物表面活性剂对棉织物进行反向胶束活性染色是可行的，它可以作为替代溶剂之一，使染色过程更天然、更可生物降解，在环境上更具可持续性。
{"title":"Limonene biosolvent-based non-aqueous dyeing medium for salt-free and alkali-free rhamnolipid (RL) biosurfactant reverse micellar dyeing of cotton fabric with reactive dyes","authors":"Yiu Lun Alan Tang, Jiali Yu, Cheng Hao Lee, Yanming Wang, Chi-Wai Kan","doi":"10.1016/j.susmat.2024.e01137","DOIUrl":"10.1016/j.susmat.2024.e01137","url":null,"abstract":"<div><div>The feasibility of using different forms of limonene biosolvents as dyeing medium in rhamnolipid (RL) biosurfactant-based reverse micellar dyeing system for cotton fabrics is investigated, with different dyeing profiles. Experimental results reveal that limonene-dyed fabrics can achieve generally higher colour yield than water-dyed fabrics while samples dyed by one-step dyeing method could obtain higher colour yield, but poorer relative unlevelness index (RUI) values when compared with samples dyed by two-step method. The CIE <em>L*a*b*</em> value and reflectance of water-dyed and limonene-dyed samples were examined. The pH value of aqueous and non-aqueous dye liquor was measured. SEM images of limonene-dyed cotton fabrics and TEM images of reverse micelle morphology were evaluated. Washing and crocking fastness of the dyed samples were also assessed. The resulting evidence validate that limonene is feasible for reverse micellar reactive dyeing of cotton fabric with the use of RL biosurfactant and it can be one of the alternative solvents, making the dyeing process more natural, more biodegradable and environmentally more sustainable.</div></div>","PeriodicalId":22097,"journal":{"name":"Sustainable Materials and Technologies","volume":"42 ","pages":"Article e01137"},"PeriodicalIF":8.6,"publicationDate":"2024-10-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142418584","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}
Pub Date : 2024-09-30DOI: 10.1016/j.susmat.2024.e01134
Zemeng Yang , Yucun Zhang , Zhe Li , Shijie Lin , Zhonghua Zhang , Linfei Fu , Junwu Kan
The current vortex-induced vibration piezoelectric wind energy harvesters have a narrow operating wind speed range, while galloping piezoelectric energy harvesters are at risk of damage from excessive amplitude at high wind speeds, a novel high-performance deformable piezoelectric wind energy harvester based on coupled vibrations (DPWEH) has been proposed. The alteration of the compound blunt body shape effectively modifies the shedding characteristics and intensity of vortices, subsequently influencing the vibration mode and output voltage of the system. The vibration mode transitions from galloping to coupled vibration, ultimately to vortex-induced vibration. The rigid wing and long elastic beam suppress galloping at high wind speeds. A thinner flexible wing can extend the duration of coupled vibration. A smaller wing width ratio and larger Y-type base wing width are beneficial for increasing the output voltage. By optimizing the parameters of the compound blunt body, the onset wind speed can be effectively reduced, the effective wind speed bandwidth can be expanded, and the DPWEH can undergo coupled vibration for an extended duration while stably generating electricity. The peak output power is 0.36 mW at a load of 150 kΩ. Moreover, the energy harvester demonstrates the prolonged power generation capability of signal transmitters and 100 LED lights.
目前的涡流诱导振动压电风能收集器工作风速范围较窄，而疾驰压电风能收集器在高风速下有可能因振幅过大而损坏，因此提出了一种基于耦合振动的新型高性能可变形压电风能收集器（DPWEH）。改变复合钝体的形状可有效改变涡流的脱落特性和强度，从而影响系统的振动模式和输出电压。振动模式从奔腾振动过渡到耦合振动，最终过渡到涡流诱导振动。刚性机翼和长弹性梁抑制了高风速下的奔腾。较薄的弹性机翼可延长耦合振动的持续时间。较小的翼宽比和较大的 Y 型基翼宽度有利于提高输出电压。通过优化复合钝体的参数，可以有效降低起始风速，扩大有效风速带宽，延长 DPWEH 的耦合振动时间，同时稳定发电。在负载为 150 kΩ 时，峰值输出功率为 0.36 mW。此外，该能量收集器还展示了信号发射器和 100 盏 LED 灯的长时间发电能力。
{"title":"Design and characteristic analysis of a high-performance deformable piezoelectric wind energy harvester based on coupled vibrations","authors":"Zemeng Yang , Yucun Zhang , Zhe Li , Shijie Lin , Zhonghua Zhang , Linfei Fu , Junwu Kan","doi":"10.1016/j.susmat.2024.e01134","DOIUrl":"10.1016/j.susmat.2024.e01134","url":null,"abstract":"<div><div>The current vortex-induced vibration piezoelectric wind energy harvesters have a narrow operating wind speed range, while galloping piezoelectric energy harvesters are at risk of damage from excessive amplitude at high wind speeds, a novel high-performance deformable piezoelectric wind energy harvester based on coupled vibrations (DPWEH) has been proposed. The alteration of the compound blunt body shape effectively modifies the shedding characteristics and intensity of vortices, subsequently influencing the vibration mode and output voltage of the system. The vibration mode transitions from galloping to coupled vibration, ultimately to vortex-induced vibration. The rigid wing and long elastic beam suppress galloping at high wind speeds. A thinner flexible wing can extend the duration of coupled vibration. A smaller wing width ratio and larger Y-type base wing width are beneficial for increasing the output voltage. By optimizing the parameters of the compound blunt body, the onset wind speed can be effectively reduced, the effective wind speed bandwidth can be expanded, and the DPWEH can undergo coupled vibration for an extended duration while stably generating electricity. The peak output power is 0.36 mW at a load of 150 kΩ. Moreover, the energy harvester demonstrates the prolonged power generation capability of signal transmitters and 100 LED lights.</div></div>","PeriodicalId":22097,"journal":{"name":"Sustainable Materials and Technologies","volume":"42 ","pages":"Article e01134"},"PeriodicalIF":8.6,"publicationDate":"2024-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142418586","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}
Pub Date : 2024-09-28DOI: 10.1016/j.susmat.2024.e01133
Ye Zhang , Huanhuan Luo , Yingying Li , Zhiqi Li , Yutong Wen , Zhen Wang , Bing Fan , Qiaoyu Li , Ying Li
Sustainable food packaging films play a crucial role in maintaining the freshness and quality of the food, while prioritizing environmental sustainability. In this paper, a transparent film with antibacterial properties and excellent tensile property was prepared utilizing keratin extracted from waste chicken feathers, combined with citric acid-modified cellulose nanocrystals (CNC-CA). The film exhibited an elongation at break of 209%, highlighting its substantial potential for food packaging applications and addressing the brittleness problem associated with keratin-based films. Microstructural analysis revealed that, the network formed by keratin and CNC-CA with the presence of extensive sliding hydrogen bonds and the transformation of keratin's secondary structure from α-helix to β-sheet were pivotal in enhancing the tensile strength of the Keratin/CNC-CA film. The citric acid not only act as crosslinkers, but also contribute to the sustained antimicrobial and antioxidant capabilities of the prepared Keratin/CNC-CA film, eliminating the need for adding chemically synthesized antimicrobial agents. The high stretchability of the Keratin/CNC-CA film facilitates the secure packaging of loose food items, effectively preserving freshness by minimizing air exposure, and could be degraded rapidly upon disposal, converting into organic fertilizer in the soil, and thereby mitigating the environmental problems induced by conventional plastic packaging films. This work highlights the great potential of waste biomass-derived material keratin in preparation of functional films with antibacterial property, offering promising application prospects in food packaging contexts.
{"title":"Antimicrobial keratin-based sustainable food packaging films reinforced with citric acid-modified cellulose nanocrystals","authors":"Ye Zhang , Huanhuan Luo , Yingying Li , Zhiqi Li , Yutong Wen , Zhen Wang , Bing Fan , Qiaoyu Li , Ying Li","doi":"10.1016/j.susmat.2024.e01133","DOIUrl":"10.1016/j.susmat.2024.e01133","url":null,"abstract":"<div><div>Sustainable food packaging films play a crucial role in maintaining the freshness and quality of the food, while prioritizing environmental sustainability. In this paper, a transparent film with antibacterial properties and excellent tensile property was prepared utilizing keratin extracted from waste chicken feathers, combined with citric acid-modified cellulose nanocrystals (CNC-CA). The film exhibited an elongation at break of 209%, highlighting its substantial potential for food packaging applications and addressing the brittleness problem associated with keratin-based films. Microstructural analysis revealed that, the network formed by keratin and CNC-CA with the presence of extensive sliding hydrogen bonds and the transformation of keratin's secondary structure from α-helix to β-sheet were pivotal in enhancing the tensile strength of the Keratin/CNC-CA film. The citric acid not only act as crosslinkers, but also contribute to the sustained antimicrobial and antioxidant capabilities of the prepared Keratin/CNC-CA film, eliminating the need for adding chemically synthesized antimicrobial agents. The high stretchability of the Keratin/CNC-CA film facilitates the secure packaging of loose food items, effectively preserving freshness by minimizing air exposure, and could be degraded rapidly upon disposal, converting into organic fertilizer in the soil, and thereby mitigating the environmental problems induced by conventional plastic packaging films. This work highlights the great potential of waste biomass-derived material keratin in preparation of functional films with antibacterial property, offering promising application prospects in food packaging contexts.</div></div>","PeriodicalId":22097,"journal":{"name":"Sustainable Materials and Technologies","volume":"42 ","pages":"Article e01133"},"PeriodicalIF":8.6,"publicationDate":"2024-09-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142359687","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}
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