Enhancement of the properties of ZnAl-LDHs for photocatalytic nitrogen reduction reaction by controlling anion intercalation

Su, Senda; Li, Xiaoman; Tan, Mengyao; Zhang, Xu; Wang, Yingying; Duan, Yanzhong; Peng, Juan; Luo, Min

doi:10.1039/d2qi02030k

Cited by 17 publications

(11 citation statements)

References 58 publications

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“…The diffraction of the (003) plane of POV/0.5%-ZnAl shifted to lower angles than that of 0.5%-ZnAl LDH, indicating that the POVs were successfully intercalated into the 0.5%-ZnAl LDH (Figure b,c and Figure S4). ,, The free electrons are typically located on sites around oxygen vacancies in many semiconductor systems. Compared to ZnAl-LDH, 0.5%-ZnAl-LDH exhibits a very strong EPR signal, attributed to the presence of oxygen vacancies that may play a role in enriching the number of free electrons (Figure S5).…”

Section: Resultsmentioning

confidence: 99%

Photochemical Ammonia Synthesis over Reduced Polyoxovanadate-Intercalated Defective ZnAl Layered Double Hydroxide Nanosheets

Chen

et al. 2023

Inorg. Chem.

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The exploration of efficient and stable N 2 fixation photocatalysts featuring a broad absorption spectrum and N 2 fixation active sites has become specifically conspicuous. Herein, a series of reduced polyoxovanadates (POVs) were intercalated into copper-induced ZnAl layered double hydroxide (0.5%-ZnAl LDH) nanosheets with oxygen vacancies via an anion exchange strategy toward green ammonia production. The intervalence charge transfer arising from mixedvalence POV materials is responsible for its light-harvesting behavior, and the LDHs lay the foundation for the chemical adsorption and activation process of nitrogen molecules; both contributions facilitate the nitrogen photofixation performance of such composite materials. As predicted, the catalytic efficiency of V 34 /0.5%-ZnAl is 7.0 times higher than 0.5%-ZnAl LDH. Therefore, such an all-inorganic system exhibits an apparent quantum efficiency of 0.3137% at 500 nm. The strategy of "working in tandem" established by POV-based light-absorber species and oxygen vacancies as the sites for N 2 activation is extremely vital for enhanced ammonia formation. This work opens up a versatile insight for the rational design of an efficient photo-driven nitrogenreduction composite catalyst toward sustainable ammonia production compared to the industrial Haber−Bosch process.

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Section: Resultsmentioning

confidence: 99%

Photochemical Ammonia Synthesis over Reduced Polyoxovanadate-Intercalated Defective ZnAl Layered Double Hydroxide Nanosheets

Chen

et al. 2023

Inorg. Chem.

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“…Until now, ESA has been mainly implemented through two reaction pathways, the nitrogen reduction reaction (NRR) and the nitrate to ammonia reaction (NRA), respectively. [29][30][31][32] NCs, as novel electrocatalysts, also display excellent activity in ESA. Yang and co-workers developed a new strategy to anchor Au 25 (PET) 18 NCs on sulfur-doped graphene, enhancing the NRR activity as well as stability.…”

Section: Electrochemical Synthesis Of Ammoniamentioning

confidence: 99%

Recent advances in atomically precise metal nanoclusters for electrocatalytic applications

Yuan

Zhu

2023

Inorg. Chem. Front.

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“…[ 144 ] Other studies based on Zn‐Al LDH with different anions intercalations showed that among the three various anions used (carbonate, suberate, PMo 12− X V X , X = 0, 1, 2, 3, 8), where the PMo 9 V 3 @ZnAl‐LDH revealed highest ammonia production of 89 µmol h −1 g −1 . [ 322 ] Another report on the sulfide‐containing NiFe‐LDH microspheres showed a NH 3 formation of ≈111 µmol L −1 h −1 , which are lesser as compared with the efficiency of atomically thin LDH nanosheets. [ 323 ]…”

Section: Applicationsmentioning

confidence: 99%

Comprehensive Insights into the Family of Atomically Thin 2D‐Materials for Diverse Photocatalytic Applications

Teja

Sakar

2023

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Abstract2D materials with their fascinating physiochemical, structural, and electronic properties have attracted researchers and have been used for a variety of applications such as electrocatalysis, photocatalysis, energy storage, magnetoresistance, and sensing. In recent times, 2D materials have gained great momentum in the spectrum of photocatalytic applications such as pollutant degradation, water splitting, CO2 reduction, NH3 production, microbial disinfection, and heavy metal reduction, thanks to their superior properties including visible light responsive band gap, improved charge separation and electron mobility, suppressed charge recombination and high surface reactive sites, and thus enhance the photocatalytic properties rationally as compared to 3D and other low‐dimensional materials. In this context, this review spot‐lights the family of various 2D materials, their properties and their 2D structure‐induced photocatalytic mechanisms while giving an overview on their synthesis methods along with a detailed discussion on their diverse photocatalytic applications. Furthermore, the challenges and the future opportunities are also presented related to the future developments and advancements of 2D materials for the large‐scale real‐time photocatalytic applications.

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Enhancement of the properties of ZnAl-LDHs for photocatalytic nitrogen reduction reaction by controlling anion intercalation

Abstract: The Layered double hydroxides (LDHs) have been shown to be efficient photocatalysts for nitrogen fixation reactions. However, the effect of interlayer anions on catalytic performance has not been reported yet....

Cited by 17 publications

References 58 publications

Photochemical Ammonia Synthesis over Reduced Polyoxovanadate-Intercalated Defective ZnAl Layered Double Hydroxide Nanosheets

Photochemical Ammonia Synthesis over Reduced Polyoxovanadate-Intercalated Defective ZnAl Layered Double Hydroxide Nanosheets

Recent advances in atomically precise metal nanoclusters for electrocatalytic applications

Comprehensive Insights into the Family of Atomically Thin 2D‐Materials for Diverse Photocatalytic Applications

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