Green synthesis of Tungsten-doped CeO2 catalyst for selective catalytic reduction of NO with NH3 using starch bio-template

Xiong, Zhibo; Li, Zhen-zhuang; Li, Cheng-xu; Wang, Jiaqiang; Lu, Wei; Du, Yanping; Tian, Su-le

doi:10.1016/j.apsusc.2020.147719

Cited by 34 publications

(6 citation statements)

References 81 publications

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“…A recent report used microcrystalline cellulose in a sol-gel protocol to produce 8-nm sized ceria nanocrystals with a very narrow size distribution of the resulting NPs [ 32 ]. Similarly, starch templated 7–8 nm-sized ceria nanocrystals that, depending on experimental conditions, formed 7–13 nm-sized NPs [ 35 ]. In another study, alginate was used both as a precursor and a template, by providing a ceria-alginate gel, whose thermal decomposition produced spherical ceria NPs with a size < 5 nm and presence of functional groups, whose spectroscopic signatures were ascribed to carbonate and carboxylates [ 31 ].…”

Section: Biomolecular Templates For Ceria Nanomaterialsmentioning

confidence: 99%

Nanostructured Ceria: Biomolecular Templates and (Bio)applications

et al. 2021

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Ceria (CeO2) nanostructures are well-known in catalysis for energy and environmental preservation and remediation. Recently, they have also been gaining momentum for biological applications in virtue of their unique redox properties that make them antioxidant or pro-oxidant, depending on the experimental conditions and ceria nanomorphology. In particular, interest has grown in the use of biotemplates to exert control over ceria morphology and reactivity. However, only a handful of reports exist on the use of specific biomolecules to template ceria nucleation and growth into defined nanostructures. This review focusses on the latest advancements in the area of biomolecular templates for ceria nanostructures and existing opportunities for their (bio)applications.

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Section: Biomolecular Templates For Ceria Nanomaterialsmentioning

confidence: 99%

Nanostructured Ceria: Biomolecular Templates and (Bio)applications

et al. 2021

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“…Biopolymers, including alginate [ 12 , 13 , 14 ], cellulose [ 15 , 16 ], starch [ 17 , 18 ], and chitosan, have been reported as carriers for immobilizing active catalytic substances. Biopolymers with renewability, high adsorption, and metal-stabilizing properties are better candidates for constructing catalysts than inorganic and organic synthetic materials [ 19 ].…”

Section: Introductionmentioning

confidence: 99%

Collagen and Silk Fibroin as Promising Candidates for Constructing Catalysts

et al. 2023

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A catalyst determines the mechanism of an organic chemical reaction, thus enabling the commercially viable formation of desired material products. Biopolymers offer new opportunities for the construction of catalysts by virtue of their biocompatibility, environmental benignity, and sustainability, as well as their low cost. Biopolymers are especially useful as carriers and precursors in catalysis application. The employment of biocompatible and biosustainable collagen and silk fibroin materials will revolutionize state-of-the-art electronic devices and systems that currently rely on conventional technologies. In this review, we first consider the ordered hierarchical structure, origin, and processing methods of collagen and silk fibroin. Then, the unique advantages and applicability of collagen and silk fibroin for constructing catalysts are summarized. Moreover, a summary of the state-of-the-art design, fabrication, and application of collagen- and silk fibroin-based catalysts, as well as the application of collagen- and silk-based catalysts, is presented by focusing on their roles as carriers and precursors, respectively. Finally, challenges and prospects are assessed for the construction and development of collagen and silk fibroin-based catalysts.

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“…The attractiveness of the approach is associated with the wealth of possible structure-directing templates, the feasibility of large-scale synthesis, and its satisfactory reproducibility. Starch is a cheap, abundant, renewable, and eco-friendly natural polysaccharide whose ability to undergo gelatinization, when heated in water, prompted applications as a soft biotemplate in the design of nanomaterials [39][40][41][42]. Recently, we studied the effect of starch addition on the co-precipitation of Mg-Al hydrotalcites and found that the use of a biotemplate unfailingly led to the preparation of less crystalline material [43,44].…”

Section: Introductionmentioning

confidence: 99%

The Synthesis of Cu–Mn–Al Mixed-Oxide Combustion Catalysts by Co-Precipitation in the Presence of Starch: A Comparison of NaOH with Organic Precipitants

et al. 2022

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Cu–Mn mixed oxides are well known as active combustion catalysts. The common method for their synthesis is based on co-precipitation, with NaOH as a precipitant, and is burdened with the possibility of introducing undesired Na contamination. This work describes the use of two organic bases, tetrabutylammonium hydroxide and choline hydroxide, as precipitating agents in a novel alkali-free route for Cu–Mn–Al catalyst synthesis. To obtain fine crystalline precursors, which are considered advantageous for the preparation of active catalysts, co-precipitation was carried out in the presence of starch gel. Reference materials prepared with NaOH in the absence of starch were also obtained. Mixed oxides were produced by calcination at 450 °C. The precursors contained MnCO3 doped with Cu and Al, and an admixture of amorphous phases. Those prepared in the presence of starch were less crystalline and retained biopolymer residues. The combustion of these residues during calcination enhanced the formation of larger amounts of the Cu1.5Mn1.5O4 spinel phase, with better crystallinity in comparison to catalysts prepared from conventionally synthesized precursors. Tests of toluene combustion demonstrated that the catalysts prepared with starch performed better than those obtained in starch-free syntheses, and that the mixed oxides obtained by the alkali-free route were more active than catalysts prepared with NaOH. Catalytic data are discussed in terms of property–performance relationships.

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Green synthesis of Tungsten-doped CeO2 catalyst for selective catalytic reduction of NO with NH3 using starch bio-template

Cited by 34 publications

References 81 publications

Nanostructured Ceria: Biomolecular Templates and (Bio)applications

Nanostructured Ceria: Biomolecular Templates and (Bio)applications

Collagen and Silk Fibroin as Promising Candidates for Constructing Catalysts

The Synthesis of Cu–Mn–Al Mixed-Oxide Combustion Catalysts by Co-Precipitation in the Presence of Starch: A Comparison of NaOH with Organic Precipitants

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