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Dear Alaka Samal
The calculations for g-C3N4 is as follows:
CB and VB for C3N4
For C:   EIE = 1086.5   kj/mol     ¡Â   96.48  = 11.26 eV
              EEA =  121.8   kj/mol     ¡Â  96.48  = 1.26 eV
XC = 1/2(11.26+1.26) = 6.26
For N:
            EIE = 1402.3   kj/mol     ¡Â   96.48  = 14.53 eV
           EEA = 7           kj/mol     ¡Â  96.48  =  0.07 eV
XN = 1/2(14.53+0.07) = 7.3
XC3N4 = (6.26¡Á6.26¡Á6.26¡Á7.3¡Á7.3¡Á7.3¡Á7.3)1/7 = 4.73
Eg = 2.7 eV
CBC3N4 = 4.73 - 4.5 - 2/7/2 = -1.13 eV
VBC3N4 = -1.13 + 2.7 = 1.57 eV
ÎÒËãÁËһϸù±¾²»ÊÇ4.73¶øÊÇ
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