Surface-Induced Engineering: P-Induced Formation of Surface Bonding States Based on the ZIF Synthesis Strategy for Photocatalytic Hydrogen Evolution

Abstract

The development of clean energy is one of the effective strategies to solve carbon peak and carbon neutrality. The severe recombination of photogenerated carriers is one of the fundamental reasons that hinder the development of photocatalysis. In this work, NiCo-MOF/ZIF was obtained by the “ZIF on MOF” strategy for the first time, and a stable bonding state of surface P­(δ–)–Co/Ni­(δ+)–O­(δ–) was formed on the surface of the catalyst by a one-step oxidation-phosphorus doping strategy. The X-ray photoelectron spectroscopy technique proves that phosphorus doping forms a unique bonding state on the surface of CoO–NiO. The novel surface bonding state can effectively inhibit the recombination of photogenerated carriers and can increase the migration rate of photogenerated electrons, which accelerates the process of photocatalytic hydrogen evolution. Photocatalytic hydrogen evolution kinetics verifies that the formation of P­(δ–)–Co/Ni­(δ+)–O­(δ–) bonding states can accelerate the process of photocatalytic hydrogen evolution, and the durability of the catalyst is verified by cycling experiments. This work provides a new strategy for catalyst synthesis, new horizons, and effective strategies for the surface design of catalysts and the development of photocatalytic hydrogen evolution.

A novel graphdiyne (CnH2n−2) synthesis strategy: design and application of an organic/inorganic conjugated system for photocatalytic hydrogen production

“…7,8 The technology of using solar energy to drive the decomposition of water to produce hydrogen is expected to be the main energy production method in the future, [9][10][11][12] which follows the concept of green and sustainable development from production to application and is the inevitable trend of human development in the future. 13,14 Graphdiyne (GDY) is a new type of carbon isotope, and its unique structure and properties lead us to determine that it has a wide range of application prospects. 15 The theoretical chemist Baughman was the first to suggest that graphdiyne structures formed from sp 2 and sp hybridized carbon could be stabilized, which inspired numerous scientific researchers.…”

“…7,8 The technology of using solar energy to drive the decomposition of water to produce hydrogen is expected to be the main energy production method in the future, 9–12 which follows the concept of green and sustainable development from production to application and is the inevitable trend of human development in the future. 13,14…”

Co-catalyst and heterojunction dual strategies to induce photogenerated charge separation for efficient hydrogen evolution of CdS

“…Metal organic frameworks (MOFs) are multifunctional materials that combine organic and inorganic components through coordination bonds. 21 MOFs are widely used in photocatalysis, supercapacitors and batteries. [22][23][24] MOFs with a large specific surface area, a unique structure and dispersed active sites are used as a promising photocatalyst.…”

In situ encapsulation of V2O5@ZIF-8 nanocomposites as electrode materials for high-performance supercapacitors with long term cycling stability

“…[24][25][26] Nowadays, ZIF-8 and carbon-based materials have attracted interest due to their high potential in wide areas of science and technology including gas storage and separation, hydrogen storage, catalysis, sensor and biomedical applications. [27][28][29][30] On the other hand, due to its high porosity and surface area, a ZIF with a cage structure is an ideal template/ precursor to design and fabricate high-performance electrode materials. 26 The overall performance of ZIF-based composites is expected to achieve further improvements in terms of synergistic effects by integrating the advantages of various components.…”