Volatile
organic compounds (VOCs) are atmospheric pollutants that
have been of concern for researchers in recent years because they
are toxic, difficult to remove, and widely sourced and easily cause
damage to the environment and human body. Most scholars use low-temperature
plasma biological treatment, catalytic oxidation, adsorption, condensation,
and recovery techniques to treat then effectively. Among them, catalytic
oxidation technology has the advantages of a high catalytic efficiency,
low energy consumption, high safety factor, high treatment efficiency,
and less secondary pollution; it is currently widely used for VOC
degradation technology. In this paper, the catalytic oxidation technology
for the degradation of multiple types of VOCs as well as the development
of a single metal oxide catalyst have been briefly introduced. We
also focus on the research progress of composite metal oxide catalysts
for the removal of VOCs by comparing and analyzing the metal component
ratio, preparation method, and types of precursors and the catalysts’
influence on the catalytic performance. In addition, the reason for
catalyst deactivation and a correlation between the chemical state
of the catalyst and the electron distribution are discussed. Development
of a composite metal oxide catalyst for the catalytic oxidation of
VOCs has been proposed.
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