Ultra-low single-atom Pt on g-C3N4 for electrochemical hydrogen peroxide production,Carbon Energy

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Ultra-low single-atom Pt on g-C3N4 for electrochemical hydrogen peroxide production
Carbon Energy ( IF 19.5 ) Pub Date : 2023-02-16 , DOI: 10.1002/cey2.337
Hongcen Yang ₁ , Niandi Lu ₁ , Juntao Zhang ₂ , Rui Wang ₁ , Shuhao Tian ₁ , Mengjun Wang ₂ , Zhixia Wang ₁ , Kun Tao ₁ , Fei Ma ₁ , Shanglong Peng ₁

Affiliation

Platinum-based materials show excellent electrocatalytic performance and have good potential for use in fuel cells. However, the high cost and scarce reserves have restricted their wide application. Therefore, it is a challenging task to reduce the amount of Pt as well as ensure good catalytic performance. Herein, anchoring of Pt single atoms (0.21 wt‰) with ultra-low content on g-C₃N₄ nanosheets (Pt_0.21/CN) has been successfully achieved. The obtained Pt_0.21/CN catalyst shows excellent two-electron oxygen reduction (2e⁻ ORR) capability for hydrogen peroxide (H₂O₂). Compared with CN, its H₂O₂ selectivity increased from 80% to 98% in 0.1 M KOH, surpassing those in most of the reported studies. Besides, the H₂O₂ production rate of Pt_0.21/CN is 767 mmol g_cat⁻¹ h⁻¹, which is 11.1 times that of CN. This work may pave the way toward the development of an effective method for the design of noble-metal electrocatalysts with low metal loading and high catalytic activity.

中文翻译：

g-C3N4 上的超低单原子 Pt 用于电化学过氧化氢生产

铂基材料表现出优异的电催化性能，在燃料电池中具有良好的应用潜力。然而，成本高、储量稀缺限制了其广泛应用。因此，减少Pt的用量并保证良好的催化性能是一项具有挑战性的任务。在此，成功实现了超低含量的Pt单原子（0.21wt‰）在gC ₃ N ₄纳米片（Pt _{0.21 /CN）上的锚定。}所得Pt _0.21 /CN催化剂对过氧化氢(H ₂ O ₂ )表现出优异的双电子氧还原(2e ^- ORR)能力。与CN相比，其H ₂ O ₂在 0.1 M KOH 中，选择性从 80% 增加到 98%，超过了大多数已报道的研究。_{此外，Pt 0.21} /CN的H ₂ O ₂产率为767 mmol g _cat^-1 h ^-1，是CN的11.1倍。这项工作可能为开发一种有效方法来设计具有低金属负载量和高催化活性的贵金属电催化剂铺平道路。

更新日期：2023-02-16

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