Synthesis of MOF-derived Co@C composites and application for efficient hydrolysis of sodium borohydride

Structural and catalytic properties of Ni–Co spinel and its composites

“…Therefore, many scientists have proposed alternative catalysts that do not contain noble metals, such as: Co 3 O 4 hollow fibre [16], bimetallic Co-Ni-based complex catalyst [17][18][19], Nipolymer nanogel hybrid particles [20], chitosan-mediated Co-Ce-B nanoparticles [21], Co-B [22], Ni-Co-B hollow nanospheres [23], salicylaldimine-Ni complex supported on Al 2 O 3 [24], Cu-Fe-B nanopowders [25], hydroxyapatitesupported cobalt(0) nanoclusters [26] and many others. Various composite catalytic masses and composites have also been proposed: NaBH 4 -NH 3 BH 3 composite promoted by AlCl 3 [27], MgH 2 -LiNH 2 [28], Co-Co 2 B and Ni-Ni 3 B [29], CoCl 2 on PAN [30], Mg-oxide composites [31], CoB on SiO 2 [32], Co-B/glassy carbon and Co-B/graphite [33], CuFe 2 O 4 /RGO [34], Co@C [35], Co-W-P/carbon cloth [36], cellulose-based hydrogel-nanometal composites [37], magnetically recyclable [38] and many others.…”

Protonated Poly(ethylene imine)‐Coated Silica Nanoparticles for Promoting Hydrogen Generation from the Hydrolysis of Sodium Borohydride

“…Proposed mechanism of NaBH 4 hydrolysis catalyzed by SiO 2 @H + PEI. 36.4 kJ mol À 1 for Ru/ZIF-67, [13] 40.7 kJ mol À 1 for AuCo/Cu, [34] 49.2 kJ mol À 1 for Co/Fe 3 O 4 @C, [27] 56.9 kJ mol À 1 for Co@C composites, [28] etc.). It indicates that the fabricated SiO 2 @H + PEI catalyst has great potential in practical H 2 production applications.…”

“…The E a of the catalyzed reactions was calculated at about 32.01 kJ mol −1 (Figure b). This value is comparable with or even less than the activation energy of many other NaBH 4 hydrolysis reactions catalyzed by metal catalysts (32.66 kJ mol −1 for hydrogel‐Ni composites, 36.4 kJ mol −1 for Ru/ZIF‐67, 40.7 kJ mol −1 for AuCo/Cu, 49.2 kJ mol −1 for Co/Fe 3 O 4 @C, 56.9 kJ mol −1 for Co@C composites, etc.). It indicates that the fabricated SiO 2 @H + PEI catalyst has great potential in practical H 2 production applications.…”

“…In the last years, varieties of metal catalysts for promoting NaBH 4 hydrolysis, including Ru, [12][13][14][15] Pd, [16] Ag, [17] Mn, [18] Co, [19][20][21][22][23][24][25][26][27][28][29] Ni, [20,[30][31][32] and complexes of them, [33][34][35][36][37][38][39][40][41][42] have been extensively investigated. Although these metal catalysts have shown excellent catalytic performance in NaBH 4 hydrolysis, their high cost and complicated fabrication are obstacles on their way to practical applications.…”

Nanopore‐Supported Metal Nanocatalysts for Efficient Hydrogen Generation from Liquid‐Phase Chemical Hydrogen Storage Materials

“…Apart from the zeolites and MOFs with ordered porous structures, the porous carbon materials, especially those derived from MOFs were also commonly used supports for the immobilization of metal NPs for the NaBH 4 hydrolysis. [ 223,224,233 ] Lin and co‐workers prepared a porous magnetic cobalt/carbon composite (MCCC) by the carbonization of ZIF‐67 at 600 °C under N 2 atmosphere ( Figure A). [ 223 ] The SEM and TEM images of MCCC showed that the ZIF‐67‐derived porous carbon roughly retained the morphology of ZIF‐67 crystals, and small CoO NPs were distributed homogeneously throughout porous carbon supports (Figure 19B).…”