CeO2/Ni-MOF with Synergistic Function of Enrichment and Activation: Efficient Reduction of 4-Nitrophenol Pollutant to 4-Aminophenol,Inorganic Chemistry

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CeO2/Ni-MOF with Synergistic Function of Enrichment and Activation: Efficient Reduction of 4-Nitrophenol Pollutant to 4-Aminophenol
Inorganic Chemistry ( IF 4.3 ) Pub Date : 2022-11-23 , DOI: 10.1021/acs.inorgchem.2c02937
Huaiquan Zhao ₁ , Xuliang Pang ₁ , Yifei Huang ₁ , Chuan Ma ₁ , Hongye Bai ₁ , Weiqiang Fan _{1,

2}

Affiliation

The conversion of organic pollutants to value-added chemicals has been considered as a sustainable approach to solve environmental problems. However, it is still a challenge to construct a suitable heterogeneous catalyst that can synchronously achieve the enrichment and activation of organic pollutants (such as 4-nitrophenol, 4-NP). Here, an organic–inorganic hybrid catalyst (CeO₂/Ni-MOF) was successfully fabricated for efficiently reducing 4-NP to 4-aminophenol (4-AP) with water as the hydrogen source. Based on the synergistic effect of Ni-MOF (adsorption action) and CeO₂ (active sites), CeO₂/Ni-MOF could achieve a reaction rate of 1.102 μmol min^–1 mg^–1 with an ultrahigh Faraday efficiency (FE) (99.9%) and conversion (97.6%). In addition, the catalytic mechanism of 4-NP reduction over CeO₂/Ni-MOF was elaborated in depth. This work presents a new avenue for the effective reduction of pollutants and provides a new strategy for designing high-performance catalysts for rare-earth metals.

中文翻译：

富集活化协同作用的CeO2/Ni-MOF：高效还原4-硝基苯酚污染物为4-氨基苯酚

将有机污染物转化为增值化学品已被认为是解决环境问题的可持续途径。然而，构建合适的能够同时实现有机污染物（如4-硝基苯酚，4-NP）富集和活化的多相催化剂仍然是一个挑战。在这里，成功地制备了一种有机-无机杂化催化剂 (CeO ₂ /Ni-MOF)，以水为氢源将 4-NP 有效还原为 4-氨基苯酚 (4-AP)。基于Ni-MOF（吸附作用）和CeO ₂（活性位点）的协同作用，CeO ₂ /Ni-MOF可达到1.102 μmol min ^–1 mg ^{–1的反应速率}具有超高法拉第效率 (FE) (99.9%) 和转化率 (97.6%)。此外，还深入阐述了CeO _{2 /Ni-MOF 还原4-NP 的催化机理。}这项工作为有效减少污染物提供了一条新途径，并为设计高性能稀土金属催化剂提供了新策略。

更新日期：2022-11-23

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