In-situ exsolved NiS nanoparticle-socketed CdS with strongly coupled interfaces as a superior visible-light-driven photocatalyst for hydrogen evolution

In situ self-exsolved ultrasmall Fe2P quantum dots from attapulgite nanofibers as superior cocatalysts for solar hydrogen evolution

“…This clearly confirms that the exsolved Fe 2 P QDs rather than the physically loaded ones on ATP are highly stable active sites for the photocatalytic HER, which can be attributed to the strong interfacial interaction between the exsolved Fe 2 P QDs and the ATP substrate. 52…”

“…It is clear that the doped Fe ions in the purified ATP mainly exist in the mixed form of oxides (FeO and Fe 2 O 3 ) and oxyhydroxides (FeOOH). 52 After phosphidation, although these Fe oxides and oxyhydroxides are still preserved, a new FeP species is generated in the resulting Fe 2 P QDs/ATP, and this is most likely due to the partial phosphidation of FeOOH as its content decreases significantly compared to that in ATP. 49 Meanwhile, in comparison with the P 2p spectrum of the ATP that only shows the oxidized P-O peak, an additional Fe-P peak is observed in the P 2p spectrum of Fe 2 P QDs/ATP (Fig.…”

“…The enhanced S BET and the highly dispersed Fe 2 P QDs would be beneficial for providing a large surface area for the adsorption of photoactive components (dyes or semiconductor particles) and ample accessible active sites to promote the kinetics of the catalytic HER. 47,48,52 Cocatalytic activity of Fe 2 P QDs/ATP in a dye-sensitized system…”

“…This clearly confirms that the exsolved Fe 2 P QDs rather than the physically loaded ones on ATP are highly stable active sites for the photocatalytic HER, which can be attributed to the strong interfacial interaction between the exsolved Fe 2 P QDs and the ATP substrate. 52 Afterwards, the photocatalytic H 2 evolution mechanism of an ErB-sensitized Fe 2 P QDs/ATP system was investigated by photoluminescence (PL) spectroscopy measurements. Previous studies on dye-sensitized photocatalytic systems have suggested that H 2 evolution proceeds through either oxidative or reductive quenching of the excited dye, leading to the formation of dye + with electron transfer from the dye to the catalyst or dye − with electron transfer to the dye from the sacrificial electron donor TEOA.…”

Single‐Atom Phosphorus Defects Decorated CoP Cocatalyst Boosts Photocatalytic Hydrogen Generation Performance of Cd0.5Zn0.5S by Directed Separating the Photogenerated Carriers

“…[4][5][6][7][8] Unfortunately, the semiconductor-based photocatalysts still maintained an unsatisfied energy conversion efficiency and (or) photostability, which is caused by the poor visible light absorption, low photogenerated carrier separation efficiency, and inadequate reactive active sites. [9] Despite numerous strategies has been developed to solve these intrinsic constraints above, such as, doping heteroatoms, [10] exposing active crystal facets, [11] loading cocatalyst, [12] and assembling heterojunctions, [13] it is far from essentially overcoming these bottlenecks to satisfy the commercialization issues of photocatalytic hydrogen evolution.In photocatalytic hydrogen evolution process, elementary surface reactions activity of photocatalysts largely depends on the surface charge density. Loading cocatalysts on photocatalysts inevitably results in the formation of interfaces between the photocatalysts and the cocatalysts, thus changing the surface charge density.…”