Effects of morphology and crystallinity of MoS2 nanocrystals on the catalytic reduction of p-nitrophenol

  • Yang Li
  • Qiushuang Chen
  • Zhenwei Zhang
  • Qiuhao Li
  • Xiuqing QiaoEmail author
Research Paper


p-Nitrophenol (p-NP), a well-known organic pollutant in industrial and agricultural wastewater, is difficult to degrade. Therefore, an exploiting efficient and economical reductant is of great significance for environmental remediation and human health. Herein, MoS2 nanocrystals with different morphologies were successfully prepared by a simple hydrothermal method in the mixed solution of ethylenediamine and ethylene glycol. The morphology can be readily controlled by tuning the volume ratio of ethylenediamine to the solvent (R). Moreover, well-crystallized MoS2 nanocrystals were developed by the following heat treatment process. The as-prepared MoS2 nanocrystals were employed as catalysts for the reduction of toxic p-NP to industrially beneficial p-aminophenol (p-AP). It was clearly revealed that both the morphology and crystallinity play critical roles in the catalytic reduction efficiency. Among the MoS2 samples, the optimized R75 sample with a rough surface exhibits the highest rate constant of kapp = 0.3906 min−1 for the reduction of p-NP, while improved crystallinity will decrease the catalytic efficiency. These novel findings can promote the development of a new non-noble metal catalyst which can be used for wastewater reductive treatment.


MoS2 p-Nitrophenol Nanostructured catalyst Hydrothermal method Crystallinity 


Funding information

The research was financially supported by the National Natural Science Foundation (No. 51502155).

Compliance with ethical standards

Conflict of interest

The authors declare that they have no conflict of interest.


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© Springer Nature B.V. 2018

Authors and Affiliations

  1. 1.College of Materials and Chemical Engineering, Hubei Provincial Collaborative Innovation Center for New Energy, Microgrid, Key Laboratory of Inorganic Nonmetallic, Crystalline and Energy Conversion MaterialsChinaThree Gorges UniversityYichangPeople’s Republic of China

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