Ternary g‐C3N4/ZnNCN@ZIF‐8 Hybrid Photocatalysts with Robust Interfacial Interactions and Enhanced CO2 Reduction Performance,Solar RRL

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Ternary g‐C3N4/ZnNCN@ZIF‐8 Hybrid Photocatalysts with Robust Interfacial Interactions and Enhanced CO2 Reduction Performance
Solar RRL ( IF 6.0 ) Pub Date : 2020-01-24 , DOI: 10.1002/solr.201900440
Yi Xie ₁ , Yifan Zhuo ₁ , Shengwei Liu ₁ , Yunan Lin ₁ , Daren Zuo ₁ , Xi Wu ₁ , Chuanhao Li ₁ , Po Keung Wong _{2,

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Affiliation

Carbon dioxide (CO₂) is one of the main greenhouse gases in the atmosphere and its concentration continues to rise, which has become a global environmental problem. The artificial photosynthesis technology involving the photocatalytic conversion of CO₂ to solar fuels is one of the most promising strategies to reduce CO₂ and utilize it to produce alternative chemical energy such as methane and methanol. Unfortunately, photocatalytic CO₂ reduction performance based on graphitic carbon nitride (g‐C₃N₄) is usually limited by poor charge separation ability and limited CO₂ adsorption ability. Herein, novel ternary g‐C₃N₄/ZnNCN@ZIF‐8 hybrid photocatalysts with robust interfacial interactions via ZnN bonding are constructed by sequential in situ interfacial reactions, to overcome the aforementioned two shortcomings and to enhance photocatalytic CO₂ conversion efficiency. Because of the synergetic effects of g‐C₃N₄/ZnNCN interfacial Z‐scheme heterostructuring and surface‐passivated ZIF‐8 grafting in improving light harvesting ability, enhancing CO₂ capture capacity, and promoting interfacial charge transfer efficiency, the photocatalytic CO₂ reduction activity of novel ternary g‐C₃N₄/ZnNCN@ZIF‐8 hybrid photocatalyst is significantly improved by 104.6%, relative to that of g‐C₃N₄. This study will offer new insights for exploiting novel efficient g‐C₃N₄‐based hybrid photocatalyst systems for artificial photosynthesis and in modulating the complex photocatalytic processes systematically.

中文翻译：

具有坚固的界面相互作用和增强的CO2还原性能的三元g-C3N4 / ZnNCN @ ZIF-8杂化光催化剂

二氧化碳（CO ₂）是大气中主要的温室气体之一，其浓度持续上升，这已成为全球性的环境问题。涉及将CO ₂光催化转化为太阳能的人工光合作用技术是减少CO ₂并利用其产生替代化学能（例如甲烷和甲醇）的最有希望的策略之一。不幸的是，基于石墨碳氮化物（g-C ₃ N ₄）的光催化CO ₂还原性能通常受限于较差的电荷分离能力和有限的CO ₂吸附能力。在此，新型三元g‐C ₃ N ₄/ ZnNCN @ ZIF-8经由锌健壮的界面相互作用的混合光催化剂 N键被顺序原位界面反应构造，以克服上述两个缺点，并提高光催化CO ₂的转换效率。由于g‐C ₃ N ₄ / ZnNCN界面Z方案异质结构化和表面钝化的ZIF-8接枝在提高光收集能力，增强CO ₂捕获能力和促进界面电荷转移效率方面的协同作用，因此光催化CO ₂三元g‐C ₃ N _4的还原活性相对于g-C ₃ N ₄，/ ZnNCN @ ZIF-8杂化光催化剂显着提高了104.6％。这项研究将为开发新型有效的基于gC ₃ N ₄的混合光催化剂体系进行人工光合作用以及系统地调节复杂的光催化过程提供新的见解。

更新日期：2020-01-24

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