in separating the costly catalyst from resultants. However, heterogeneous
photocatalysts are magnetic and can be effectively separated for reuse by magnetic
method (Zeng et al. 2018).
The decreased photocatalytic efficiency during cyclic-runs of MoS 2 can be
attributed to oxidization of photocatalyst, by OH⦁ and ⦁O 2
À radicals. This affects
reusability and efficiency, which can be overcome by addition of co-catalyst materials, which will inhibit oxidation due to active radicals.
MoS 2 and few of its composites are hydrophobic, and have difficulty for complete
dispersion in water. However, few nanocomposites of MoS 2 with MMT assists in
improving the dispersion of catalyst in water along with its efficiency (Peng et al.
2017).
4.9 Conclusion
Capability of MoS 2 based nanocomposites to degrade the industrial pollutants has
exhibited promising results. The emphasis on environment protection and restriction
on industries against discharge of toxic elements into atmosphere or water stream has
accelerated the research in this sector. Catalytic property of MoS 2 is enhanced by
doping and forming heterojunction with other semiconductors. The Z-scheme and
active dye degradation mechanisms are extrapolated to many other toxic pollutants
in the industry. Usage of noble metals and utilising the SPR has extended the
degradation capability of the nanocomposites. The ease of separating the
nanocomposite after degradation and maintaining the degradation efficiency even
after repetitions will decide its commercialisation. Extended research is being done
to produce magnetically separable MoS 2 based nanocomposite. The selection of
co-catalyst with good synergistic effect has achieved promising results. These
findings ensure the potential capability of MoS 2 based nanocomposites for removal
of industrial pollutants in an advantageous manner.
References
Abinaya R, Archana J, Harish S, Navaneethan M, Ponnusamy S, Muthamizhchelvan C,
Shimomura M, Hayakawa Y (2018) Ultrathin layered MoS 2 nanosheets with rich active sites
for enhanced visible light photocatalytic activity. RSC Adv 8:26664–26675. https://doi.org/10.
1039/C8RA02560F
Akhundi A, Habibi-Yangjeh A (2016) Novel G-C 3 N 4 /Ag 2 SO 4 nanocomposites: fast microwaveassisted preparation and enhanced photocatalytic performance towards degradation of organic
pollutants under visible light. J Colloid Interface Sci 482:165. https://doi.org/10.1016/j.jcis.
2016.08.002
Cao L, Wang R, Wang D, Li X, Jia H (2015) MoS 2 -hybridized TiO 2 nanosheets with exposed
{001} facets to enhance the visible-light photocatalytic activity. Mater Lett 160:286–290.
https://doi.org/10.1016/j.matlet.2015.07.149
112
M. Kaur et al.
photocatalysts are magnetic and can be effectively separated for reuse by magnetic
method (Zeng et al. 2018).
The decreased photocatalytic efficiency during cyclic-runs of MoS 2 can be
attributed to oxidization of photocatalyst, by OH⦁ and ⦁O 2
À radicals. This affects
reusability and efficiency, which can be overcome by addition of co-catalyst materials, which will inhibit oxidation due to active radicals.
MoS 2 and few of its composites are hydrophobic, and have difficulty for complete
dispersion in water. However, few nanocomposites of MoS 2 with MMT assists in
improving the dispersion of catalyst in water along with its efficiency (Peng et al.
2017).
4.9 Conclusion
Capability of MoS 2 based nanocomposites to degrade the industrial pollutants has
exhibited promising results. The emphasis on environment protection and restriction
on industries against discharge of toxic elements into atmosphere or water stream has
accelerated the research in this sector. Catalytic property of MoS 2 is enhanced by
doping and forming heterojunction with other semiconductors. The Z-scheme and
active dye degradation mechanisms are extrapolated to many other toxic pollutants
in the industry. Usage of noble metals and utilising the SPR has extended the
degradation capability of the nanocomposites. The ease of separating the
nanocomposite after degradation and maintaining the degradation efficiency even
after repetitions will decide its commercialisation. Extended research is being done
to produce magnetically separable MoS 2 based nanocomposite. The selection of
co-catalyst with good synergistic effect has achieved promising results. These
findings ensure the potential capability of MoS 2 based nanocomposites for removal
of industrial pollutants in an advantageous manner.
References
Abinaya R, Archana J, Harish S, Navaneethan M, Ponnusamy S, Muthamizhchelvan C,
Shimomura M, Hayakawa Y (2018) Ultrathin layered MoS 2 nanosheets with rich active sites
for enhanced visible light photocatalytic activity. RSC Adv 8:26664–26675. https://doi.org/10.
1039/C8RA02560F
Akhundi A, Habibi-Yangjeh A (2016) Novel G-C 3 N 4 /Ag 2 SO 4 nanocomposites: fast microwaveassisted preparation and enhanced photocatalytic performance towards degradation of organic
pollutants under visible light. J Colloid Interface Sci 482:165. https://doi.org/10.1016/j.jcis.
2016.08.002
Cao L, Wang R, Wang D, Li X, Jia H (2015) MoS 2 -hybridized TiO 2 nanosheets with exposed
{001} facets to enhance the visible-light photocatalytic activity. Mater Lett 160:286–290.
https://doi.org/10.1016/j.matlet.2015.07.149
112
M. Kaur et al.