Noble‐Metal‐Free NiS/C₃N₄ for Efficient Photocatalytic Hydrogen Evolution from Water

Abstract

A NiS/C3 N4 photocatalyst containing earth-abundant elements only was constructed by means of a simple hydrothermal method. This photocatalyst shows efficient hydrogen evolution (48.2 μmol h(-1) ) under visible light when using triethanolamine as a sacrificial reagent. The optimal loading of 1.1 wt % NiS on C3 N4 as a cocatalyst can enhance the H2 production by about 250 times compared with the native C3 N4 . The highest apparent quantum efficiency of 1.9 % was recorded at 440 nm.

Surface modification of g-C3N4 by hydrazine: Simple way for noble-metal free hydrogen evolution catalysts

“…In the previous reports, MoS 2 , NiS and Ni(OH) 2 have been used as the co-catalysts for mpg-g-C 3 N 4 (Table 2), [58][59][60] which are the only few cases that g-C 3 N 4 can catalyze the photo hydrogen evolution without noble metal. However, obvious reactivity decrease was observed even in the first 2 hours for all these catalysts, that is agree with what we found above.…”

Exploration of Zr–Metal–Organic Framework as Efficient Photocatalyst for Hydrogen Production

“…Photocatalytic hydrogen production through water splitting by using solar energy has been considered as an alternative environmentally benign way, but it is limited to develop highly active and stable photocatalysts at low cost. So far, various photocatalysts have been developed for H 2 production, for instance, metal oxide (TiO 2 [5][6][7], NiO [8], CuO [9]), metal sulfide (CdS [10], CuS [11], NiS [12], MoS [13,14]), and nitride semiconductors (C 3 N 4 ) [15][16][17][18][19][20][21][22]. Recently, Yu and coworkers have made a systematic analysis of the heterojunction photocatalysts, which provides an important reference for the subsequent photocatalytic research [23].…”

Carbon nitride nanosheet/metal–organic framework nanocomposites with synergistic photocatalytic activities

“…CN, the band gap of which is typically ca. 2.7 eV, 7 has been used to catalyse a number of reactions and particularly: water splitting, 7,10 carbon dioxide reduction [11][12][13] and degradation of contaminants in water. 14,15 Its purely organic nature and facile synthesis represent the key strengths of the material.…”