Electronic modulation of NiO by constructing an amorphous/crystalline heterophase to improve photocatalytic hydrogen evolution

Abstract

The interface between amorphous and crystalline plays an important role in improving the photocatalytic performance due to the optimization of both conductivity and reaction activity of active sites of cocatalysts...

Copolymerization synthesis of highly hydrophilic carbon nitride for efficient solar hydrogen production

“…5–7 Nonetheless, the photoactivity of pristine PCN is hampered by the constraints on the marginal visible-light absorption and the rapid recombination of photoinduced charge carriers. 8–10 Therefore, multifarious methods have been adopted to enhance the photocatalytic activity, such as the construction of heterojunctions, 11 loading of cocatalysts, 12,13 engineering nanoarchitecture, 14,15 element doping, 16,17 and surface-engineering. 18,19…”

“…[5][6][7] Nonetheless, the photoactivity of pristine PCN is hampered by the constraints on the marginal visible-light absorption and the rapid recombination of photoinduced charge carriers. [8][9][10] Therefore, multifarious methods have been adopted to enhance the photocatalytic activity, such as the construction of heterojunctions, 11 loading of cocatalysts, 12,13 engineering nanoarchitecture, 14,15 element doping, 16,17 and surfaceengineering. 18,19 Given that the catalysis occurs on the surface of catalysts, regulating their surface states such as surface area, hydrophilicity, and affinity is capable of regulating the catalytic activity, selectivity, and durability.…”

Amorphous/crystalline heterophase electrocatalysts: synthesis, applications and perspectives

“…5(i) and (j)). 59 The used laser beam produced from an equipment had a wavelength of 532 nm, pulse width of 10 ns and operating frequency of 10 Hz. For comparison, the crystalline counterpart was synthesized by annealing a/c heterophase NiO at 400 °C in air.…”

Enhanced photocatalytic activity in ZnO nanoparticles developed using novel Lepidagathis ananthapuramensis leaf extract

“…Over the last decade, various metal oxides such as ZnO, 1–3 CuO, 4 NiO, 5 CoO, 6 Fe 2 O 3 , 7 MnO 2 , 8 TiO 2 , 9,10 SnO 2 , 11 MgO, 12 etc have been synthesised for numerous applications, among which photocatalytic applications and waste water treatment have been explored enormously. Among various metal oxides, ZnO and TiO 2 NPs are studied the most due to their non-toxic nature, cost effectiveness, chemical stability and inertness, eco-friendliness, potential photocatalytic efficiency, etc.…”

“…etc for synthesising metal oxide NPs. [1][2][3][4][5][6][7][8][9][10][11][12] But these methods fail to address the problems related to toxicity, cost, waste production and environmental contamination. In order to overcome them, today's researchers have been immensely focusing on the green chemistry route for synthesizing metal oxides.…”