梭形Fe-MOFs的制备及电催化氧化葡萄糖的性质研究
Controlled Synthesis of Spindle-shaped Fe-MOFs for Glucose Oxidation Reaction Electrocatalytic Activity
袁菲菲 1王雪 2程启静 2李艺喆 2张恩立2
作者信息
- 1. 蚌埠医科大学公共基础学院,安徽 蚌埠 233030;安徽师范大学化学与材料科学学院,安徽分子基材料省级实验室,安徽 芜湖 241002
- 2. 蚌埠医科大学公共基础学院,安徽 蚌埠 233030
- 折叠
摘要
电催化葡萄糖氧化反应(GOR),由于其相对较低的热力学势和自然界中生物质丰富的葡萄糖来源,是各种电催化氧化反应中有前途的替代电催化水分解中的阳极氧化反应.然而,开发高活性、低成本的GOR电催化剂仍是一个难题.本文合成了高催化活性、低成本、具有梭形结构的Fe-MOFs电催化剂,即MIL-88A(Fe),将其应用于电催化GOR反应中,具有高效的催化效率.实验表明,所制得的梭形Fe-MOFs电催化剂在 1.0 mol·L-1 KOH电解质溶液中,进行电催化水分解阳极氧化反应需要约1.60 V的电位,才能提供100 mA·cm-2的电流密度.然而,在含有0.05 mol·L-1葡萄糖和 1.0 mol·L-1 KOH的混合电解质中,只需要约 1.54 V的电位,即可达到 100 mA·cm-2 的电流密度.由此可见,Fe-MOFs电催化剂在含有葡萄糖的KOH混合溶液中的催化GOR活性比在KOH溶液中的OER电催化活性更强,并且通过计时电位测试发现所得催化剂具有良好的耐受性,稳定性显著.梭形Fe-MOFs催化剂为电催化氧化葡萄糖酸的实际应用提供了一种新的催化剂选择.
Abstract
Electrocatalytic glucose oxidation(GOR),due to its relatively low thermodynamic potential and abundant glucose sources from biomass in nature,is a promising alternative to oxygen evolution reaction in electrocatalytic water splitting among various electrocat-alytic oxidation reactions.However,the development of highly active and low-cost GOR electrocatalysts remains a difficult problem.In this paper,MIL-88A(Fe),the Fe-MOFs electrocatalyst with high catalytic activity,low cost and special spindle-shaped structure,had been synthesized and applied to the electrocatalytic GOR reaction successfully.The prepared spindle-shaped Fe-MOFs were charac-terized by XRD,FESEM,TEM and FTIR.The experimental results showed that the prepared Fe-MOFs electrocatalyst needed the poten-tial of about 1.60 V to provide the current density of 100 mA·cm-2 for the OER in 1.0 mA·cm-2 KOH electrolyte solution.However,in the electrolyte solution containing 0.05 mol·L-1 glucose and 1.0 mol·L-1 KOH,experiments showed that the Fe-MOFs electrocatalyst re-quired only the potential of about 1.54 V to afford the current density of 100 mA·cm-2 for the GOR.It was found that the catalytic activ-ity of Fe-MOFs electrocatalyst in the KOH solution containing glucose was higher than that of in KOH solution.Simultaneously,the spin-dle-shaped Fe-MOFs electrocatalyst also displayed significant long-term stability.Obviously,the spindle-shaped Fe-MOFs catalyst provides a new catalyst choice for the practical application of electrocatalytic oxidation of glucose to produce gluconic acid.
关键词
Fe-MOFs/电催化剂/析氧反应/葡萄糖氧化反应Key words
Fe-MOFs/electrocatalyst/oxygen evolution reaction/glucose oxidation reaction引用本文复制引用
基金项目
安徽省高校自然科学研究重点项目(KJ2021A0730)
安徽省高校自然科学研究重点项目(2022AH051472)
安徽省高校自然科学研究重点项目(2023AH051962)
安徽分子基材料省级实验室(省部共建重点培育)开放基金(fzj22014)
安徽省大学生创新创业训练计划项目(S202210367148)
出版年
2024
NETL
NSTL
万方数据