JCIS: N-doped Ti-based MXene efficiently regulates the electronic structure to optimize the hydrogen production reaction

source：beike new material Views：3614time：2021-11-22 QQ Academic Group: 1092348845

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Research Background

The environment and the global energy crisis have put forward demands for clean energy. In this case, hydrogen has become the most promising energy carrier, and the electrocatalytic hydrogen evolution reaction is an effective hydrogen production method. However, the cost of Pt-based electrocatalysts is too expensive, and it is very necessary to develop low-cost and high-efficiency electrocatalysts.

Introduction

Recently, the research group of Professor Chao Yan of Jiangsu University of Science and Technology published a research paper entitled Efficient tuning the electronic structure of N-doped Ti-based MXene to enhance hydrogen evolution reaction in the well-known academic journal Journal of Colloid and Interface Science.

Graphic guide

Figure 1. Synthesis process of N-doped MXene.

Figure 2. SEM, TEM and element distribution test.

Figure 3. XPS and N doping rate statistics.

Figure 4. XRD, Raman and BET tests.

Figure 5. Electrocatalytic hydrogen production test.

Figure 6. Catalytic stability and horizontal comparison.

Summary of this article

In summary, we report a simple and fast strategy to achieve continuous control of N doping in MXene by ultrasonic treatment of ammonia solution under low temperature conditions. First of all, the continuous control of N in MXene can be achieved through a simple and convenient ultrasonic treatment method with adjustable temperature. Secondly, N-doped MXene can not only provide an effective electron transfer path, but also increase the interlayer distance of MXene, thereby exposing more active sites, resulting in excellent electrocatalytic performance.

Literature link:
https://doi.org/10.1016/j.jcis.2020.09.001
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