Figure 7
The PHE activity of control samples: PCMS-1-S (prepared by treatment of PCMS-1 under H2S atmosphere), PCMS-1-O (prepared by the treatment of PCMS-1 under air), PCMS-1-Pt (testing PHE activity of PCMS-1 in the presence of 1.wt% Pt) and C-ZnS-Pt (testing PHE activity of C-ZnS in the presence of Pt), C-ZnS-W (prepared by the treatment of C-ZnS at 120°C for 4 h).
