Effect of Precipitant on Structure and Room-Temperature Catalytic Oxidation Performance of CexZr1-xOy Prepared by Coprecipitation

KONG Jie; ZHAO Linna; SHI Huiqiu; TANG Ruijiu; LIU Tiancheng

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Effect of Precipitant on Structure and Room-Temperature Catalytic Oxidation Performance of Ce_xZr_1-xO_y Prepared by Coprecipitation

更新时间：2026-06-05

- Effect of Precipitant on Structure and Room-Temperature Catalytic Oxidation Performance of Ce_xZr_1-xO_y Prepared by Coprecipitation
- CIESC Journal (2026)
- 作者机构：
  
  1.云南民族大学化学与环境学院，云南昆明 650504
  2.云南国森环保科技有限公司，云南昆明 650041
- 作者简介：
- 基金信息：
- DOI：
  CLC： X511
- Received：27 March 2026，
  
  Revised：2026-06-04，
  
  Accepted：05 June 2026，
- 稿件说明：
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KONG Jie, ZHAO Linna, SHI Huiqiu, et al. Effect of Precipitant on Structure and Room-Temperature Catalytic Oxidation Performance of Ce_xZr_1-xO_y Prepared by Coprecipitation[J/OL]. CIESC Journal, 2026.
DOI：

KONG Jie, ZHAO Linna, SHI Huiqiu, et al. Effect of Precipitant on Structure and Room-Temperature Catalytic Oxidation Performance of Ce_xZr_1-xO_y Prepared by Coprecipitation[J/OL]. CIESC Journal, 2026. DOI：

摘要

采用共沉淀法制备Ce

1-x

催化剂，探究沉淀剂种类、pH值及浓度对其室温催化氧化甲醛性能的影响。结果表明，以(NH

)

为沉淀剂、pH=9、浓度2 mol/L时制得的催化剂性能最佳，比表面积达95 m

·g

-1

，表面氧空位含量为26.41%。Zr

掺杂入CeO

晶格形成固溶体，提升了Ce

浓度，促进了氧空位生成与氧迁移，从而增强了催化活性。

Abstract

A series of Ce

1-x

catalysts were synthesized via a coprecipitation method to investigate the effects of precipitant type

and precipitant concentration on their catalytic performance for formaldehyde oxidation at room temperature. The catalyst prepared using (NH₄)₂CO₃ as the pre

cipitant at a pH of 9 and a concentration of 2 mol/L exhibited the best performance

achieving a specific surface area of 95 m²·g⁻¹ and a surface oxygen vacancy content of 26.41%. The incorporation of Zr⁴⁺ into the CeO₂ lattice resulted in the formation of a solid solution

which increased the concentration of Ce³⁺

promoted the generation of oxygen vacancies

and enhanced oxygen mobility

thereby contributing to the superior catalytic activity.

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Keywords

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