TY - JOUR
T1 - NH2-MIL-125(Ti) doped CdS/Graphene composite as electro and photo catalyst in basic medium under light irradiation
AU - Nivetha, Ravi
AU - Gothandapani, Kannan
AU - Raghavan, Vimala
AU - Jacob, George
AU - Sellapan, Raja
AU - Kannan, A. M.
AU - Pitchaimuthu, Sudhagar
AU - Pandiaraj, Saravanan
AU - Almuqrin, Aljawhara H.
AU - Alodhayb, Abdullah
AU - Muthuramamoorthy, Muthumareeswaran
AU - Van Le, Quyet
AU - Jeong, Soon Kwan
AU - Grace, Andrews Nirmala
N1 - Funding Information:
Author Abdullah Alodhayb acknowledges Researchers Supporting Project number (RSP-2021/304), King Saud University, Riyadh, Saudi Arabia.
Publisher Copyright:
© 2021 Elsevier Inc.
PY - 2021/9
Y1 - 2021/9
N2 - The development of active electrocatalysts and photocatalysts for hydrogen evolution reaction (HER) and for environmental remediation is a huge challenge. Research is still underway on the development of low-cost catalytic materials with appreciable efficiency for HER. In the present study, a composite of metal organic framework (MOF) with CdS and graphene (NH2-MIL-125(Ti)/CdS-graphene) composites were developed with different loadings of graphene material via solvothermal technique. Further the electrocatalytic activity of the synthesized catalysts were investigated for HER and photocatalytic degradation of dye. Results show that the synthesized catalyst with a less amount of graphene was more active. HER results showed a less Tafel slope of 70.8 and 61.9 mVdec−1 with 15.6 mA/cm2 and 15.46 mA/cm2 current densities under light on and off conditions. Further the dye degradation activity of the synthesized catalysts was tested with Rhodamine B dye and results showed that the catalyst showed excellent activity for low weight loading of graphene with a degradation efficiency of 95 % and followed pseudo first order kinetic model. Overall results showed that the synthesized composites are promising for HER and photocatalytic applications.
AB - The development of active electrocatalysts and photocatalysts for hydrogen evolution reaction (HER) and for environmental remediation is a huge challenge. Research is still underway on the development of low-cost catalytic materials with appreciable efficiency for HER. In the present study, a composite of metal organic framework (MOF) with CdS and graphene (NH2-MIL-125(Ti)/CdS-graphene) composites were developed with different loadings of graphene material via solvothermal technique. Further the electrocatalytic activity of the synthesized catalysts were investigated for HER and photocatalytic degradation of dye. Results show that the synthesized catalyst with a less amount of graphene was more active. HER results showed a less Tafel slope of 70.8 and 61.9 mVdec−1 with 15.6 mA/cm2 and 15.46 mA/cm2 current densities under light on and off conditions. Further the dye degradation activity of the synthesized catalysts was tested with Rhodamine B dye and results showed that the catalyst showed excellent activity for low weight loading of graphene with a degradation efficiency of 95 % and followed pseudo first order kinetic model. Overall results showed that the synthesized composites are promising for HER and photocatalytic applications.
KW - Hydrogen evolution reaction (HER)
KW - NH-MIL-125(Ti)/CdS/Graphene
KW - Photocatalysis
KW - Rhodamine-B
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U2 - 10.1016/j.envres.2021.111719
DO - 10.1016/j.envres.2021.111719
M3 - Article
C2 - 34293309
AN - SCOPUS:85111076185
SN - 0013-9351
VL - 200
JO - Environmental Research
JF - Environmental Research
M1 - 111719
ER -