The specific surface areas, the pore sizes, the pore volumes,and the pore distributions of paste-1, paste-2, paste-3, and paste-4 were measured, and the related data is shown in Table 1. In this measurement, the pastes were firstly coated on aluminum foils,and then were annealed at 500◦C for half hour. After annealing,the coatings were peeled off from aluminum foils and used in BET measurement.