Ultrafast and stable hydrogen generation from sodium borohydride in methanol and water over Fe–B nanoparticles

Surface‐modified carbon black derived from used car tires as alternative, reusable, and regenerable catalysts for H 2 release studies from sodium borohydride methanolysis

“…Unmodified CB used as catalyst directly in the methanolysis of NaBH 4 generated only around 230 mL of H 2 in 22 minutes, whereas the modified forms of CBs, CB‐PEI, and CB‐PEI‐HCl generated about 250 mL in 7 and 3.25 minutes, respectively. The activation energy of 34.7 kJ/mol for CB‐PEI‐HCl catalyst is much better when compared with most of the catalyst reported in the literature and the catalytic performance extend to subzero (from 0 down to −20°C) temperatures . Since CB‐PEI‐HCl catalyst can be reused effectively several times and can be regenerated easily, use of CB as a methanolysis catalyst is attractive alternative for its valorization.…”

“…The activation energy of 34.7 kJ/mol for CB-PEI-HCl catalyst is much better when compared with most of the catalyst reported in the literature and the catalytic performance extend to subzero (from 0 down to −20°C) temperatures. 23,[41][42][43][44][45] Since CB-PEI-HCl catalyst can be reused effectively several times and can be regenerated easily, use of CB as a methanolysis catalyst is attractive alternative for its valorization. Although there are many studies seeking better catalysts for H 2 production from NaBH 4 , none of the employed catalytic materials is based on waste products such as CB.…”

“…Additionally, the TOF value of CB-PEI-HCl 3089 ± 45 (mol H 2 /mol catalyst.min) is comparably better than most of reported TOF values Table 3. As summarized in Table 3, CB-PEI-HCl catalyst exhibits much better catalytic performances than most of catalyst used in the hydrolysis reactions in the literature [41][42][43][44] as well as better much better catalytic performances than some of the similar methanolysis reactions reported in the literature. 11,45,48 Therefore, the catalyst, CB-PEI-HCl, prepared from waste materials (used car tire), as renewable source is catalytically comparable with toxic metal nanoparticle-based catalysts as well as metal-free catalyst systems offering sustainable alternatives.…”

Surface‐Activated Amorphous Iron Borides (FexB) as Efficient Electrocatalysts for Oxygen Evolution Reaction

“…It is noted that the chemical surface state of these products are identical to that of the post‐OER FeB 2 in previous report, indicating a probable reproduction of the active surface for OER on Fe x B using chemical strategy. Moreover, the intensity of Fe x B in XPS Fe 2p and B 1s is negligible, suggesting a fully surface coverage of amorphous oxide/hydroxide layer . Thus, the as‐prepared Fe x B with active surface was denoted as Fe–B–O@Fe x B.…”

Hydrogen generation from nanoflower platinum films

“…In the area of hydrogen generation, any catalyst usually works kinetically faster for their initial runs. Then the hydrogen generation rate either stabilize and set to a lower value or the catalytic activity is worsen and even halted most probably due to the decomposition of the catalyst into other chemicals [7,19,20]. The latter is generally more expected for the nonnobel catalysts.…”