electrical conductivity of the MOF NSs limit their electrocatalytic activity far from practical applications. In addition, timeconsuming coating procedures are always needed to attach powdered MOF NSs onto the surface of the electrode with the assistance of polymeric binders, which may decrease their original activity and cause mechanical stability problems.To address these issues, one effective and feasible way is directly growing the ultrathin BMNSs on self-supported 3D macroporous conductive substrates. In this kind of hierarchical structure, first, the oriented and close arrangement of the ultrathin MOF NSs can avoid the restacking and guarantee the fully exposed electroactive sites. Second, the hierarchical pore structure of the electrode can not only enhance the mass transfer but also facilitate bubble dissipating in gas-generated reactions. [8] Moreover, the close and strong binding of ultrathin MOF NSs with the underlying conductive support gains more efficient electron transfer between them and guarantees the ultrahigh structural stability of the electrodes. [5a,9] However, until now, the controllable growth of different ultrathin BMNSs on various conductive substrates, especially the chemical inert substrates (such as carbon cloth (CC) and carbon fiber paper (CFP)), still remains a challenge because there are only few nucleation sites on the substrates and MOFs tend to form bulk crystals under conventional synthetic conditions. [10] Therefore, it is of great significance to develop a general and effective synthesis strategy to directly grow different ultrathin BMNSs on various conductive substrates to accelerate the practical application of MOFs in electrocatalysis.Herein, we report a general strategy to synthesize various ultrathin BMNSs arrays on different conductive substrates through the in situ transformation of presynthesized layered double hydroxides (LDHs) NSs arrays, which provide an appropriate dissolution rate of metal ions in a mixed solvent. This strategy with LDHs as precursor is adaptable to bimetal-MOFs with different organic ligands and metal ions (such as NiCo-BDC (BDC = 1,4-dicarboxybenzene), NiCo-NDC (NDC = naphthalene-2,6-dicarboxylic acid), NiCo-TDA (TDA = 2,5-thiophenedicarboxylic acid), ZnCo-BDC BMNSs) on various substrates (such as nickel foam (NF), CC, and CFP, benefiting from the multimetal tunability and flexibility of LDHs. In addition, trimetal-MOF NSs Structure engineering of ultrathin metal-organic framework (MOF) nanosheets to self-supporting and well-aligned MOF superstructures is highly desired for diverse applications, especially important for electrocatalysis. In this work, a facile layered double hydroxides in situ transformation strategy is developed to synthesize ultrathin bimetal-MOF nanosheets (BMNSs) arrays on conductive substrates. This approach is versatile, and applicable to obtain various BMNSs or even trimetal-MOF nanosheets arrays on different substrates. As a proof of concept application, the obtained ultrathin NiCo-BDC BMNSs array exhibits an excellent...

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The implementation of "1+X" certificate system has played a positive role in promoting the vocational education of application-oriented undergraduate universities in China. Through field investigation, the authors found that current universities' curriculum can neither meet enterprises' needs of information talents, nor match the vocational education related to "Big data, intelligence, mobile Internet, cloud computing" ("BIMC" in abbreviation) information technology. It is difficult to meet the personalized needs of students. Thus, this paper puts forward how to construct course-certificate integrated curriculum system based on "BIMC" technology from the aspect that universities should establish the selection and elimination mechanism of x certificate based on big data analysis, revise the talent cultivation scheme, and by the construction of smart classroom and virtual simulation laboratory develop combined optional courses corresponding to x certificates. The research result is not only of great promoting effect for the x certificate pilot work, but prospective and enlightening for the cultivation of information technology talents in universities.