节能,可持续的级联氧化葡萄糖电氧化成葡萄糖酸
Mingming He1, Chao Huang1,2, Mingzi Sun1
1Department of Chemistry and State Key Laboratory of Marine Environmental Health, City University of Hong Kong, Hong Kong, P. R. China.
Advanced materials (Deerfield Beach, Fla.)
|December 24, 2025
概括
这项研究介绍了一种节能合系统,用于从葡萄糖中生产葡萄糖酸 (GRA). 新方法显著降低了能源消耗,并为生物质利用提供了可持续的途径.
科学领域:
- 电化学 电化学 电化学
- 生物质的价值化 生物质的价值化
- 绿色化学 绿色化学
背景情况:
- 葡萄糖酸 (GRA) 是可生物降解材料的关键平台化学物质.
- 目前的葡萄糖电氧化到GRA是能源密集的,需要超过1.2V的电位.
- 可持续的生物质利用需要更高效的化学生产方法.
研究的目的:
- 开发一种高能效的双联电催化系统,用于合成葡萄糖 (GLU) 到葡萄糖酸 (GRA).
- 为了将氧化过程分成两个级联步骤:GLU到葡萄糖酸 (GNA) 和GNA到GRA.
- 提高GRA生产的整体能源效率和经济可行性.
主要方法:
- 一种使用Au/C催化剂进行化氧化和AuPt/C催化剂进行氧化的一对系统.
- 通过电化学氧化,将葡萄糖氧化为葡萄糖酸,随后氧化为葡萄糖酸.
- 时光度测量以评估催化剂稳定性和基质转化.
主要成果:
- 在0.6VRHE下实现了91.8%的法拉代克效率和近100%的GLU到GNA的转换.
- 在0.55VRHE下达到81%的法拉代克效率和90%的GNA转换为GRA.
- 与单步方法相比,GLU到GRA的整体能源效率从13.8%提高到31.8%.
结论:
- 开发的联系统为葡萄糖酸电合成提供了高能效和稳定的途径.
- 这种方法使可持续的生物质价值化成为可能,并支持循环,碳中和的化学生产.
- 该系统显示了在GRA生产过程中产生电力的潜力,进一步提高了经济可行性.
相关概念视频
Outcomes of Glycolysis
106.5K
Nearly all the energy used by cells comes from the bonds that make up complex organic compounds. These organic compounds are broken down into simpler molecules, such as glucose. As a result, cells extract energy from glucose over many chemical reactions—a process called cellular respiration.
Cellular respiration can occur aerobically (with oxygen) or anaerobically (without oxygen). In the presence of oxygen, cellular respiration starts with glycolysis and continues with pyruvate...
Cellular respiration can occur aerobically (with oxygen) or anaerobically (without oxygen). In the presence of oxygen, cellular respiration starts with glycolysis and continues with pyruvate...
106.5K
Energy-requiring Steps of Glycolysis
171.0K
Glucose is the source of nearly all energy used by organisms. The first step of converting glucose into usable energy is called glycolysis. Glycolysis occurs in the cytosol of the cell over two phases: an energy-requiring phase and an energy-releasing phase. Over the first three steps, glucose is converted into different forms and attached to two phosphate groups donated by two ATP molecules, resulting in an unstable sugar. In the next two stages, the unstable sugar splits into two sugar...
171.0K
Glycolysis: Preparatory Phase
16.3K
In cellular metabolism (the complete breakdown of glucose to extract energy), glycolysis is the first step. Glycolysis takes place in the cytoplasm of both prokaryotic and eukaryotic cells. Glucose enters heterotrophic cells in two ways. One method is through secondary active transport, where the transport takes place against the glucose concentration gradient. The other mechanism uses a group of integral proteins called GLUT proteins, also known as glucose transporter proteins. These...
16.3K
Glycolysis
1.4K
Glycolysis, the Embden-Meyerhof pathway, is a central metabolic pathway involved in glucose catabolism. It is highly conserved across most organisms, reflecting its fundamental role in cellular energy production. This process occurs in the cytoplasm and can function both in the presence and absence of oxygen, making it versatile for various organisms and environmental conditions.Stages of GlycolysisGlycolysis is a ten-step pathway that converts glucose into pyruvate, generating a net gain of...
1.4K
Carbohydrate Catabolism
923
Carbohydrate catabolism is a fundamental process in cellular metabolism that enables energy extraction from glucose through two primary pathways: cellular respiration and fermentation. Both pathways begin with glycolysis, which operates independently of oxygen availability.Glycolysis: A Shared Starting PointGlycolysis is an oxygen-independent process that breaks down glucose into two molecules of pyruvic acid. During this process, a net gain of two ATP molecules and two NADH molecules is...
923
The Citric Acid Cycle: Output
10.2K
The citric acid cycle is termed an amphibolic pathway as it operates both anabolically and catabolically. The cyclic reactions balance the flux of the substrates to provide an optimal concentration of NADH and ATP to the cell.
Regulation of Citric Acid Cycle
The citric acid cycle is regulated in several ways, including feedback inhibition, regulation of enzyme activities, and associated anaplerotic or cataplerotic pathways.
The primary substrate of the TCA cycle—acetyl CoA—is...
Regulation of Citric Acid Cycle
The citric acid cycle is regulated in several ways, including feedback inhibition, regulation of enzyme activities, and associated anaplerotic or cataplerotic pathways.
The primary substrate of the TCA cycle—acetyl CoA—is...
10.2K


