Fahao Ma , Shuhua Wang , Xueqin Gong , Xiaolei Liu , Zeyan Wang , Peng Wang , Yuanyuan Liu , Hefeng Cheng , Ying Dai , Zhaoke Zheng , Baibiao Huang
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引用次数: 47
Abstract
Electrochemical hydrogen evolution reaction (HER) coupled with microplastics reforming are critical for marine energy and environmental engineering, but filled with challenges. Herein, Ni3N/W5N4 Janus nanostructure with barrier-free heterointerface was designed via transition metal nitrides-inducing growth strategy. Benefiting from the interface synergistic effect, super-hydrophilic surface and multilevel Janus structure, Ni3N/W5N4 electrode displays Pt-like HER performance and the outstanding stability (~300 h) under industrially current. Meanwhile, Ni3N/W5N4 also exhibits high activity and selectivity toward electro-reforming of plastics, showing an ultralow overpotential of 1.33 V (η10) and generating the value-added HCOOH with the high Faradic efficiency of ~85%. Impressively, driven by solar panels, the bifunctional Ni3N/W5N4 electrocatalyst achieves the highly efficient production of H2 and HCOOH (η10 =1.4 V, ηsolar to hydrogen=16.04%) in seawater full of plastics. This work underlines the on-site upgrading of plastic wastes and energy-saving hydrogen evolution in seawater enabled by the design of Janus heterostructures for metal nitrides.
电化学析氢反应(HER)耦合微塑料重整在海洋能源和环境工程中具有重要意义，但仍存在挑战。采用过渡金属氮化物诱导生长策略，设计了具有无障碍异质界面的Ni3N/W5N4 Janus纳米结构。得益于界面协同效应、超亲水性表面和多层Janus结构，Ni3N/W5N4电极具有与pt相似的HER性能和优异的工业电流稳定性(~300 h)。同时，Ni3N/W5N4对塑料的电重整也表现出了很高的活性和选择性，其过电位为1.33 V (η10)，并产生了高附加值的HCOOH，其法拉迪效率高达85%。令人印象深刻的是，在太阳能电池板的驱动下，双功能Ni3N/W5N4电催化剂在充满塑料的海水中实现了H2和HCOOH的高效生成(η10 =1.4 V， ηsolar to hydrogen=16.04%)。这项工作强调了通过设计金属氮化物的Janus异质结构来实现塑料废物的现场升级和海水中的节能析氢。
期刊介绍：
Applied Catalysis B: Environment and Energy (formerly Applied Catalysis B: Environmental) is a journal that focuses on the transition towards cleaner and more sustainable energy sources. The journal's publications cover a wide range of topics, including:
1.Catalytic elimination of environmental pollutants such as nitrogen oxides, carbon monoxide, sulfur compounds, chlorinated and other organic compounds, and soot emitted from stationary or mobile sources.
2.Basic understanding of catalysts used in environmental pollution abatement, particularly in industrial processes.
3.All aspects of preparation, characterization, activation, deactivation, and regeneration of novel and commercially applicable environmental catalysts.
4.New catalytic routes and processes for the production of clean energy, such as hydrogen generation via catalytic fuel processing, and new catalysts and electrocatalysts for fuel cells.
5.Catalytic reactions that convert wastes into useful products.
6.Clean manufacturing techniques that replace toxic chemicals with environmentally friendly catalysts.
7.Scientific aspects of photocatalytic processes and a basic understanding of photocatalysts as applied to environmental problems.
8.New catalytic combustion technologies and catalysts.
9.New catalytic non-enzymatic transformations of biomass components.
The journal is abstracted and indexed in API Abstracts, Research Alert, Chemical Abstracts, Web of Science, Theoretical Chemical Engineering Abstracts, Engineering, Technology & Applied Sciences, and others.
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