“…As expected, compared with Zn 3 (VO 4 ) 2 /Ni(OH) 2 , three distinct peaks (H–OH, CO, and C–O) appear in the Zn 3 (VO 4 ) 2 /Ni(OH) 2 /rGO nanosheet arrays, which proves that Zn 3 (VO 4 ) 2 /Ni(OH) 2 nanosheets are successfully loaded onto the rGO support. 23–28 In addition, the positive shift of metal–oxygen (M–O) in binding energy linked to Zn 3 (VO 4 ) 2 /Ni(OH) 2 and rGO interactions is due to a change in the atomic coordination number or charge-transfer effects. 29 For Zn 3 (VO 4 ) 2 /Ni(OH) 2 , the respective peaks at 856.0 and 873.7 eV for Ni 2p 3/2 and Ni 2p 1/2 , are accompanied by the respective satellites at 861.6 and 879.9 eV, which can be ascribed to the characteristic peak of Ni 2+ (Fig.…”