fig6

Figure 6. (A) Schematic illustration of the synthetic procedure for the mPDA/MXene heterostructure. This figure is quoted with permission from Li et al.^[59]; (B) Schematic illustration of the construction of OMCTs. This figure is quoted with permission from Liu et al.^[62]. mPDA: Mesoporous polydopamine; OMCTs: ordered mesoporous carbon/titanium carbide heterostructures.