Synthesis of Ni2+–Al3+–LDHs with flower-like morphology assembled from an ultrathin platelets structure: Phenomenon of enhanced photocatalytic performance
Source abstract
Abstract
This study was initiated to explore a method for producing higher photocatalytic performance in layered double hydroxides (LDHs) through the preparation of ultrathin nanosheets, which would generate higher surface area (SA). Herein, a method is detailed for fabricating Ni2+-Al3+-LDHs with flower-like morphology assembled from an ultrathin nanosheet (Ni2+-Al3+-LDHs-U) employing a low temperature-reflux method together with a surfactant. The resulting products’ structures, morphologies, porous properties, and bandgaps were investigated using a series of characterization techniques, which confirmed the formation of Ni2+-Al3+-LDHs-U with an ultrathin nanosheet structure (4–8 nm) and large SA (151 m2/g), which were nearly three times greater than the Ni2+-Al3+-LDHs comprising a thick nanosheet structure (50 nm, Ni2+-Al3+-LDHs-T). In addition, the bandgaps of these new Ni2+-Al3+-LDHs-U materials were 5.11 electron volts lower than the Ni2+-Al3+-LDHs-T material (5.26 eV). These flower-like morphology assembled from an ultrathin nanosheet exhibited a greatly enhanced light response that utterly decomposed methyl orange and Rhodamine B in water, which represented far better photodegradation under similar conditions compared to the thicker Ni2+-Al3+-LDHs-T and thicker Ni2+-Fe3+-LDHs-T. The increased photoreaction efficiency was explained by higher SA and catalytically active sites of the experimental product.
Source: crossref · Quality: baseline
Research context
OpenAlex topics: Layered Double Hydroxides Synthesis and Applications · Advanced Photocatalysis Techniques · Supercapacitor Materials and Fabrication
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Shaanxi Laboratory for the Utilization of Clean Low Metamorphic Coal, Chemistry and Chemical Engineering School, Yulin University 1 , Yulin, Shaanxi 71900, China
Laboratory for Efficient Use and Processing of Coal, Education Ministry, University of Mining and Technology 2 , Xuzhou, Jiangsu 221116, China
Funding
Science and Technology Project of Yulin · High-tech Zone Project of Yulin · Key Science and Technology Program of Shaanxi Province · National Nature Science Foundation of China · Shaanxi Province Science and Technology Resources Open Sharing Platform Project · The doctor starts-up funds of Yulin University
References (39)
Show source-provided references
1. Nanocatalysts and other nanomaterials for water remediation from organic pollutants10.1016/j.ccr.2020.213180 ↗
2. Heterogeneous fenton catalytic oxidation for water treatment10.7536/PC200201 ↗
3. Adsorption of organic pollutants by amine functionalized mesoporous silica in aqueous solution. Effects of pH, ionic strength and some consequences of APTES stability10.1016/j.jece.2019.103325 ↗
4. Adsorption of organic stormwater pollutants onto activated carbon from sewage sludge10.1016/j.jenvman.2017.04.011 ↗
5. Novel Fenton-like process (pre-magnetized Fe/H2O2) for efficient degradation of organic pollutants10.1016/j.seppur.2016.06.011 ↗
6. Recent advances in the synthesis of monolithic metal-organic frameworks10.1007/s40843-020-1585-1 ↗
7. Synthesis of new low-cost organic ultrafiltration membrane made from Polysulfone/Polyetherimide blends and its application for soluble azoic dyes removal10.1016/j.jmrt.2020.02.102 ↗
8. Behaviour of polysulfone ultrafiltration membrane for dyes removal10.2166/wst.2018.124 ↗
9. Sequential electrochemical oxidation and bio-treatment of the azo dye Congo red and textile effluent10.1016/j.jphotobiol.2019.111655 ↗
10. Photocatalytic degradation of rhodamine B under visible light using nanostructured zinc doped cobalt ferrite: Kinetics and mechanism10.1016/j.ceramint.2016.09.191 ↗
11. Facile synthesis of ZnO nanoplates and nanoparticle aggregates for highly efficient photocatalytic degradation of organic dyes10.1016/j.jpcs.2018.04.023 ↗
12. Biomimetic fabrication of g-C3N4/TiO2 nanosheets with enhanced photocatalytic activity toward organic pollutant degradation10.1016/j.cej.2014.08.072 ↗
13. Crystal structures of some double hydroxide minerals10.1180/minmag.1973.039.304.01 ↗
14. Intercalation of organic and inorganic anions into layered double hydroxides10.1039/c39890000926 ↗
15. Deintercalation of Li/Al LDH and its application to recover adsorbed chromate from used adsorbent10.1016/j.clay.2006.10.007 ↗
16. Hierarchical Ni−Al hydrotalcite supported Pt catalyst for efficient catalytic oxidation of formaldehyde at room temperature10.1016/s1872-2067(18)63143-2 ↗
17. Layered double hydroxides-based photocatalysts and visible-light driven photodegradation of organic pollutants: A review10.1016/j.cej.2019.123684 ↗
18. Layered double hydroxides as highly efficient photocatalysts for visible light oxygen generation from water10.1021/ja905467v ↗
19. Exfoliation of layered double hydroxides for enhanced oxygen evolution catalysis10.1038/ncomms5477 ↗
20. Water-plasma-enabled exfoliation of ultrathin layered double hydroxide nanosheets with multivacancies for water oxidation10.1002/adma.201701546 ↗
21. Large-scale synthesis of highly dispersed layered double hydroxide powders containing delaminated single layer nanosheets10.1039/c3cc42918k ↗
22. One-step direct synthesis of layered double hydroxide single-layer nanosheets10.1039/c5nr01077b ↗
23. Synthesis of layered double hydroxide single-layer nanosheets in formamide10.1021/acs.inorgchem.6b02203 ↗
24. Study on formation process for Co2+-Ni2+-Fe3+-CO32− LDHs prepared by trisodium citrate complexing agent-assisted homogeneous precipitation method10.1080/09276440.2016.1091685 ↗
25. Preparation of Ni2+-Fe3+ layered double hydroxide material with high crystallinity and well-defined hexagonal shapes10.1021/cm7023789 ↗
26. Deintercalation of carbonate ions from a hydrotalcite-like compound: Enhanced decarbonation using acid−salt mixed solution10.1021/cm049579g ↗
27. IR characteristics of hydrotalcite-like compounds10.1007/bf00348744 ↗
28. Structural study of zinc-substituted nickel hydroxides10.1039/a908517c ↗
29. Effect of preparation method on the physical and catalytic property of nanocrystalline Fe2O310.1016/j.jallcom.2010.05.119 ↗
30. Influence of microwave radiation on the textural properties of layered double hydroxides10.1016/j.micromeso.2006.03.038 ↗
31. A novel TiO2/biochar composite catalysts for photocatalytic degradation of methyl orange10.1016/j.chemosphere.2019.01.132 ↗
32. Bimetallic CuPd alloy nanoparticles decorated ZnO nanosheets with enhanced photocatalytic degradation of methyl orange dye10.1016/j.jcis.2022.09.054 ↗
33. Composites of TiO2 pillared sericite: Synthesis, characterization and photocatalytic degradation of methyl orange10.1016/j.clay.2023.107044 ↗
34. ZnO Nanoparticles immobilized on flaky layered double hydroxides as photocatalysts with enhanced adsorptivity for removal of acid red G10.1021/la1019313 ↗
35. Layered double hydroxides as efficient photocatalysts for visible-light degradation of rhodamine B10.1016/j.jcis.2013.05.064 ↗
36. Photoeffects on the potentials of thin metal films on a n-TiO2 crystal wafer. The mechanism of semiconductor photocatalysts10.1016/0009-2614(82)80253-4 ↗
37. Copperphthalocyanine immobilized Zn/Al LDH as photocatalyst under solar radiation for decolorization of methylene blue10.1016/j.molcata.2006.11.035 ↗
38. Local spatial charge separation and proton activation induced by surface hydroxylation promoting photocatalytic hydrogen evolution of polymeric carbon nitride10.1016/j.nanoen.2018.05.053 ↗
39. A review on BiVO4, photocatalyst: Activity enhancement methods for solar photocatalytic applications10.1016/j.apcata.2018.02.010 ↗