A critical review on layered double hydroxide (LDH)-derived functional nanomaterials as potential and sustainable photocatalysts

Abstract

Significant advancement has been made in semiconductor based photocatalysis to simultaneously address environmental pollution and energy dilemma; aiming to the beginning of greener and sustainable technology. Nevertheless, photocatalysis still mandates...

Facilitated Visible-Light-Driven Peroxymonosulfate Activation by a Co–Fe Layered Double Hydroxide Derived p–n Heterostructure for Sulfadiazine Degradation: Affecting Parameters, Kinetics, and Mechanistic Insights

“…The MMOs thus formed not only possess characteristic features but also some inherited properties from the precursor LDHs. A lot of research work has been published about LDH-derived MMOs for photocatalytic applications. , However, to our best knowledge, there is no such research concerning CoFe LDH-derived MMOs with built-in p–n heterojunctions following S-scheme charge-transfer dynamics.…”

MXene Schottky Functionalized Z-scheme Ternary Heterostructure for Enhanced Photocatalytic H2O2 Production and H2 Evolution

“…Up to now, various diversities of photocatalysts have been used for H 2 O 2 photoproduction and H 2 evolution, such as metal oxides, metal sulfides, layered double hydroxides, metal organic frameworks, and organic polymers. − Among these, graphitic carbon nitride (g-C 3 N 4 ) is considered as a superexcellent photocatalyst and is widely used in photoproduction of H 2 O 2 as it can selectively reduce O 2 to H 2 O 2 via 1,4-endoperoxide formation and also has the ability to reduce H 2 O for H 2 evolution. − Nevertheless, bulk g-C 3 N 4 suffers from fast charge recombination and harvests lower solar radiation, impeding its efficiency toward photocatalysis. − Apart from many modification strategies, morphology modification to form nanosheets and intrinsic doping with a nonmetallic heteroatom have been adopted widely and were reported for various photocatalytic reactions. − In this regard, O-doped tube-shaped g-C 3 N 4 was reported by Fu et al for better CO 2 photoreduction activity . Yu et al studied photocatalytic H 2 O 2 production by P-modified porous g-C 3 N 4 .…”

Molecular-polaron-coupling-enhanced photocatalytic CO2 reduction on copper phthalocyanine/NiMgFe layered double hydroxide nanocomposites

“…When bulk LDHs are exfoliated into ultrathin nanosheets, the positively charged LDH lamellae can induce other functional anions to selfassemble. 18,19 This assembly via electrostatic interactions not only does not disrupt the structure of the functional molecules, but also has the potential for creating unique electronic structures to generate special effects. 20,21 It is possible to assemble Pc molecules on LDH nanosheets to create a composite, optimizing the various excited states (such as excited triplet states and polaron states) to maximize photocatalytic CO 2 reduction.…”