In this study, photocatalytic degradation of ammonia in petrochemical wastewater is investigated by solar light photocatalysis. Two-dimensional ultra-thin atomic layer structured MoS2 are synthesized via a simple hydrothermal method. We examine all prepared samples by means of physical techniques, such as SEM-EDX, HRTEM, FT-IR, BET, XRD, XPS, DRS and PL. And, we use fullerene modified MoS2 nanosheets to enhance the activity of photochemically generated oxygen (PGO) species. Surface area and pore volumes of the MoS2-fullerene samples significantly increase due to the existence of MoS2. And, PGO oxidation of MB, TBA and TMST, causing its concentration in aqueous solution to decrease, is confirmed by the results of PL. The generation of reactive oxygen species is detected through the oxidation reaction from 1,5-diphenyl carbazide (DPCI) to 1,5-diphenyl carbazone (DPCO). It is found that the photocurrent density and the PGO effect increase in the case with modified fullerene. The experimental results show that this heterogeneous catalyst has a degradation of 88.43% achieved through visible light irradiation. The product for the degradation of NH3 is identified as N2, but not NO2−or NO3−.

Abstract
1. Introduction
2. Experimental
    2.1 Materials
    2.2 Oxidation of fullerene surface
    2.3 Synthesis of MoS2-fullerene composite
    2.4 Characterization of MoS2-fullerene compounds
    2.5 Catalytic degradation of MB, TBA and TMST(telmisartan)
    2.6 Evaluation of reactive oxygen species
    2.7 Degradation of NH3
3. Results and Discussion
    3.1 Elemental analysis of the samples
    3.2 Surface characteristics of the samples
    3.3 Physico-chemical and surface properties
    3.4 Structural analysis
    3.5 UV-vis diffuse reflectance spectroscopy
    3.6 Photoluminescence spectra of samples
    3.7 Photocatalytic activity of samples
    3.8 Oxidation mechanism of NH3
4. Conclusion
References

• Cong-Yang Zou(Suzhou University of Science and Technology, Jiangsu Key Laboratory of Environmental Functional)
• Ze-Da Meng(Suzhou University of Science and Technology, Jiangsu Key Laboratory of Environmental Functional) Corresponding author
• Wei Zhao(Dept. of Materials Science and Engineering, Sichuan University of Science and Engineering)
• Won-Chun Oh(Department of Advanved Materials Science and Engineering, Hanseo University) Corresponding author