Emerging frontiers of nickel-aluminium layered double hydroxide heterojunctions for photocatalysis.

The unique benefits of nickel-aluminium layered double hydroxide (Ni-Al LDH)-based heterojunctions, including large surface area, tunable bandgap and morphology, abundant reaction sites, and high activity, selectivity, and photostability, make them extremely promising for photocatalytic applications. Given the importance and benefits of Ni-Al LDH-based heterojunctions in photocatalysis, it is necessary to provide a summary of Ni-Al LDH-based heterojunctions for photocatalytic applications. Hence, in this review, we thoroughly described the material design for Ni-Al LDH-based heterojunctions, along with their recent developments in various photocatalytic applications, , H evolution, CO reduction, and pollutant removal.

Challenges in Photocatalytic Carbon Dioxide Reduction.

An energy crisis and significant anthropogenic CO emissions as a result of rising fossil fuel consumption have caused a rapid increase in global temperature. One of the best solutions to these two issues is thought to be the photocatalytic reduction of CO into value-added carbon-containing products. In this aspect, the main challenges mainly include the photocatalytic mechanism, reaction activity, and product selectivity, especially in ambiguous reaction pathways and product selectivity, an unclear charge transfer mechanism, and an overestimate of product yield.

Correction: Critical role of hydrogen bonding between microcrystalline cellulose and g-CN enables highly efficient photocatalysis.

Correction for 'Critical role of hydrogen bonding between microcrystalline cellulose and g-CN enables highly efficient photocatalysis' by Zhaoqiang Wang , , 2024, , 204-207, https://doi.org/10.1039/D3CC04800D.

Recent Advances in LDH/g-CN Heterojunction Photocatalysts for Organic Pollutant Removal.

Environmental pollution has been decreased by using photocatalytic technology in conjunction with solar energy. An efficient method to obtain highly efficient photocatalysts is to build heterojunction photocatalysts by combining graphitic carbon nitride (g-CN) with layered double hydroxides (LDHs). In this review, recent developments in LDH/g-CN heterojunctions and their applications for organic pollutant removal are systematically exhibited.

Critical role of hydrogen bonding between microcrystalline cellulose and g-CN enables highly efficient photocatalysis.

Developing a highly efficient photocatalyst for energy and environmental applications is urgently required. Herein, graphitic carbon nitride (CN) coupled with microcrystalline cellulose (MCC) (denoted as MCC-X/CN) shows excellent photocatalytic performance for tetracycline (TC) degradation and H evolution. And the optimized MCC-0.

Size effect of ruthenium nanoparticles on water cracking properties with different crystal planes for boosting electrocatalytic hydrogen evolution.

Small size ruthenium (Ru) nanoparticles have shown remarkable potential for electrocatalytic hydrogen evolution reaction (HER). Nevertheless, the complicated preparation and relatively low activity of small size Ru nanoparticles are two key challenges. In this work, carbon nanotubes supported Ru nanoparticles catalysts (cnts@NC-Ru t °C) with different sizes were prepared via using the combination of L-3,4-dihydroxyphenylalanine (l-dopa) self-polymerization oxidation reaction and different high temperature annealing to study the variation of particle activity with size.

Kinetically and Thermodynamically Favorable Ni-Al Layered Double Hydroxide/Ni-Doped ZnCdS S-Scheme Heterojunction Triggering Photocatalytic H Evolution.

Layered double hydroxide (LDH)-based photocatalysts have attracted more attention in photocatalysis due to their low cost, wide band gaps, and adjustable photocatalytic active sites; however, their low photogenerated carrier separation efficiency limits their photocatalytic efficiency. Herein, a NiAl-LDH/Ni-doped ZnCdS (LDH/Ni-ZCS) S-scheme heterojunction is rationally designed and constructed from kinetically and thermodynamically favorable angles. The 15% LDH/1% Ni-ZCS displays comparable photocatalytic hydrogen evolution (PHE) activity with a rate of 6584.

Ag-modified α-FeO spherical particles interspersed on hierarchical flower-like NiAl-LDH microspheres with Z-scheme for significantly enhanced CO photoreduction into CO.

The conversion of carbon dioxide (CO) into value-added C1 and/or C2 chemicals by photocatalytic technology has been regarded as a "one stone-two birds" solution for environmental degradation and energy shortage. In this work, a novel Z-scheme mechanism photocatalyst of Ag-modified α-FeO spherical particles interspersed on hierarchical flower-like layered nickel-aluminum hydroxides (NiAl-LDH) microspheres (α-FeO/Ag/NiAl-LDH, designated as FALDH) is successfully prepared by a combined in-situ hydrothermal and grating strategy. As expected, the optimal sample of FALDH-5/10 exhibits significantly enhanced photocatalytic performance for CO reduction with a highest CO yield up to 46.

Bridging between NiAl-LDH and g-CN by using carbon quantum dots for highly enhanced photoreduction of CO into CO.

A series of treble NiAl-LDH/g-CN/carbon quantum dots (LDH/CN/CQDs) photocatalysts is successfully prepared for the photoreduction of CO to CO via a facile hydrothermal pathway. In the 3D flower-like LDH/CN/CQDs, CQDs not only achieve the efficient inhibition of charge recombination but also act as the unhindered "electronic bridges" to synergistically construct a classical type-Ⅱ charge transfer configuration, which synchronously permits the effluence of photogenerated electrons from CN to LDH and holes from LDH to CN, and promotes ultraviolet-visible irradiation respondence. The sample of LDH/CN/CQDs-6 is the optimal one amongst the LDH/CN/CQDs with a larger special surface area (98.

Interior and Surface Synergistic Modifications Modulate the SnNbO/Ni-Doped ZnInS S-Scheme Heterojunction for Efficient Photocatalytic H Evolution.

Interior and surface synergistic modifications can endow the photocatalytic reaction with tuned photogenerated carrier flow at the atomic level. Herein, a new class of 2D/2D SnNbO/Ni-doped ZnInS (SNO/Ni-ZIS) S-scheme heterojunctions is synthesized by a simple hydrothermal strategy, which was used to evaluate the synergy between interior and surface modifications. Theoretical calculations show that the S-scheme heterojunction boosts the desorption of H atoms for rapid H evolution.

Boosting H Production over C -Mediated NH -MIL-125(Ti)/Zn Cd S S-Scheme Heterojunction via Enhanced Interfacial Carrier Separation.

Improving greatly the separation efficiency of interfacial charge carrier is a major challenge in photocatalysis. Herein, a new class of C -mediated NH -MIL-125(Ti)/Zn Cd S S-scheme heterojunction with enhanced interfacial charge carrier separation is designed and synthesized. The constructed S-scheme heterojunction thermodynamically favors photocatalytic H evolution because of the large driving force resulting from its strong redox abilities.