{"title":"Graphene oxide from biomass waste: A pathway to electrochemical hydrogen production and capacitive applications","authors":"Aayush Gupta , Amit Kumar , Sachin Jaidka , Kaveri Ajravat , Loveleen Kaur Brar","doi":"10.1016/j.physb.2024.416765","DOIUrl":null,"url":null,"abstract":"<div><div>In the pursuit of sustainable energy, hydrogen stands out as a promising alternative to fossil fuels due to its clean and efficient energy properties. This study investigates a novel approach to synthesize graphene oxide (GO) from biomass waste for sustainable hydrogen production. Three biomass sources - walnut shells, peanut shells, and parthenium hysterophorus - were used to produce GO, which was then used as electrode material in electrochemical hydrogen evolution reactions (HER). The highest yield of GO was obtained for the walnut shells (20 %). It demonstrated the best electrocatalytic performance, achieving a current density of −29.32 mA/cm<sup>2</sup> at −0.82 V, surpassing GO obtained from peanut shells and parthenium hysterophorus. A detailed structural and electrochemical analysis revealed a low Tafel slope (163.06 mV/decade), a high electrochemical surface area (25.0), and an onset potential of −0.68 V for walnut shell-derived GO. This novel use of biomass offers a renewable and affordable resource.</div></div>","PeriodicalId":20116,"journal":{"name":"Physica B-condensed Matter","volume":"698 ","pages":"Article 416765"},"PeriodicalIF":2.8000,"publicationDate":"2024-11-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Physica B-condensed Matter","FirstCategoryId":"101","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0921452624011062","RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"PHYSICS, CONDENSED MATTER","Score":null,"Total":0}
引用次数: 0
Abstract
In the pursuit of sustainable energy, hydrogen stands out as a promising alternative to fossil fuels due to its clean and efficient energy properties. This study investigates a novel approach to synthesize graphene oxide (GO) from biomass waste for sustainable hydrogen production. Three biomass sources - walnut shells, peanut shells, and parthenium hysterophorus - were used to produce GO, which was then used as electrode material in electrochemical hydrogen evolution reactions (HER). The highest yield of GO was obtained for the walnut shells (20 %). It demonstrated the best electrocatalytic performance, achieving a current density of −29.32 mA/cm2 at −0.82 V, surpassing GO obtained from peanut shells and parthenium hysterophorus. A detailed structural and electrochemical analysis revealed a low Tafel slope (163.06 mV/decade), a high electrochemical surface area (25.0), and an onset potential of −0.68 V for walnut shell-derived GO. This novel use of biomass offers a renewable and affordable resource.
在追求可持续能源的过程中，氢因其清洁高效的能源特性而成为替代化石燃料的理想选择。本研究探讨了一种利用生物质废弃物合成氧化石墨烯（GO）以实现可持续制氢的新方法。研究人员利用核桃壳、花生壳和牡丹壳这三种生物质来源来生产 GO，然后将其用作电化学氢进化反应（HER）的电极材料。核桃壳的 GO 产率最高（20%）。它的电催化性能最好，在-0.82 V电压下的电流密度为-29.32 mA/cm2，超过了从花生壳和parthenium hysterophorus中获得的GO。详细的结构和电化学分析表明，核桃壳提取的 GO 具有较低的塔菲尔斜率（163.06 mV/decade）、较高的电化学表面积（25.0）和-0.68 V 的起始电位。这种对生物质的新颖利用提供了一种可再生且经济实惠的资源。
期刊介绍：
Physica B: Condensed Matter comprises all condensed matter and material physics that involve theoretical, computational and experimental work.
Papers should contain further developments and a proper discussion on the physics of experimental or theoretical results in one of the following areas:
-Magnetism
-Materials physics
-Nanostructures and nanomaterials
-Optics and optical materials
-Quantum materials
-Semiconductors
-Strongly correlated systems
-Superconductivity
-Surfaces and interfaces
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