State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin, 130022, PR China; School of Applied Chemistry and Engineering, University of Science and Technology of China, Hefei, Anhui, 230026, PR China.
State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin, 130022, PR China.
Biosens Bioelectron. 2024 Dec 15;266:116714. doi: 10.1016/j.bios.2024.116714. Epub 2024 Aug 27.
Developing a multi-functional green energy device that propels sustainable energy development and concurrently purifies environmental pollutants offers an irresistibly compelling vision for a cleaner future. Herein, we reported a bias-free glucose/O bio-photoelectrochemical system (BPECS) for both energy conversion and phenolic pollutants degradation. Coupling a glucose dehydrogenase (GDH) modified self-assembled meso-tetrakis (4-carboxyphenyl)-porphyrin (SA-TCPP)-sensitized TiO biophotoanode for glucose oxidation and nitrogen/oxygen doped cobalt single-atom catalyst (CoNOC) cathode for two-electron oxygen reduction, both solar and biochemical energies were converted into electric power in BPECS with a maximum power density of 296.98 μW cm (0.49 V). Working in synergy with horseradish peroxidase (HRP) biocatalysis, the cathode-generated HO, a by-product, is effectively redeployed for degrading phenol, attaining an impressive degradation efficiency of approximately 100% within 60 min. Additionally, aiming to scale up this ingenious BPECS approach, peroxidase-mimicking CoO nanozyme were engineered as a substitute for natural HRP. Remarkably, these nanozyme demonstrated a comparable degradation efficiency, achieving the same result in 90 min. In this work, our results demonstrate that this bias-free glucose/O BPECS model marks a significant step forward in integrating renewable energy harvesting with environmental remediation, but also opens new avenues for the versatile application of nanozymes.
开发一种多功能绿色能源设备，既能推动可持续能源发展，又能同时净化环境污染物，为更清洁的未来提供了一个极具吸引力的愿景。在此，我们报道了一种无偏置葡萄糖/O 生物光电化学系统（BPECS），用于能量转换和酚类污染物降解。通过耦合葡萄糖脱氢酶（GDH）修饰的自组装介孔四（4-羧基苯基）卟啉（SA-TCPP）敏化 TiO2 生物光电阳极用于葡萄糖氧化和氮/氧掺杂钴单原子催化剂（CoNOC）阴极用于两电子氧还原，BPECS 可以将太阳能和生物化学能转化为电能，最大功率密度为 296.98 μW cm（0.49 V）。与辣根过氧化物酶（HRP）生物催化协同作用，阴极生成的 HO，一种副产物，被有效地重新用于降解苯酚，在 60 分钟内达到了令人印象深刻的 100%降解效率。此外，为了推广这种巧妙的 BPECS 方法，我们设计了过氧化物酶模拟的 CoO 纳米酶作为天然 HRP 的替代品。值得注意的是，这些纳米酶表现出相当的降解效率，在 90 分钟内达到了相同的结果。在这项工作中，我们的结果表明，这种无偏置葡萄糖/O BPECS 模型标志着将可再生能源收集与环境修复相结合的重要一步，同时也为纳米酶的多功能应用开辟了新的途径。
