Solution Combustion Synthesis of Nanoscale Materials

Abstract

Solution combustion is an exciting phenomenon, which involves propagation of self-sustained exothermic reactions along an aqueous or sol-gel media. This process allows for the synthesis of a variety of nanoscale materials, including oxides, metals, alloys, and sulfides. This Review focuses on the analysis of new approaches and results in the field of solution combustion synthesis (SCS) obtained during recent years. Thermodynamics and kinetics of reactive solutions used in different chemical routes are considered, and the role of process parameters is discussed, emphasizing the chemical mechanisms that are responsible for rapid self-sustained combustion reactions. The basic principles for controlling the composition, structure, and nanostructure of SCS products, and routes to regulate the size and morphology of the nanoscale materials are also reviewed. Recently developed systems that lead to the formation of novel materials and unique structures (e.g., thin films and two-dimensional crystals) with unusual properties are outlined. To demonstrate the versatility of the approach, several application categories of SCS produced materials, such as for energy conversion and storage, optical devices, catalysts, and various important nanoceramics (e.g., bio-, electro-, magnetic), are discussed.

Facile synthesis of amorphous Cr2O3/N‐doped carbon nanosheets and its excellent lithium storage property

“…However, the XRD profile of the a ‐Cr 2 O 3 /NC composite shows no obvious Bragg diffraction peaks, indicating that the product is amorphous. During SCS, the energy generated by the chemical reaction depends on the ratio of fuel to metal nitrates and usually governs state of the products . For the XRD result, it is ascribed that the dehydration and carbonization reaction of glucose needs to absorb energy, leading to that the energy evolved from the combustion process is insufficient to facilitate the crystallization of the products.…”

“…The released heat can sustain the entire reaction, and the quality of the combustion products can be controlled by adjusting the combustion parameters. Most importantly, all reactants materials with the homogeneous mixing at the molecular level in the solution renders the uniform distribution of the compositions of the products . In the synthesis process, chromium nitrate and glucose are transformed into chromium oxide and carbon, respectively, and amorphous chromium oxide is homogeneously distributed in the carbon sheet support.…”

Pt-Co and Pt-Ni Catalysts of Low Metal Content for H2 Production by Reforming of Oxygenated Hydrocarbons and Comparison with Reported Pt-Based Catalysts

“…Two different methods were used to incorporate the metals to the support: (i) the common simultaneous incipient wetness impregnation (IWI) of the metal precursors, followed by slow calcination; (ii) the method of simultaneous wet impregnation of the metal precursors with urea, followed by the fast combustion of the urea matrix (UMC) [14,15,17]. In both cases, the support used was c-Al 2 2 , and Co(NO 3 ) 2 (all Sigma Aldrich, R.P.A).…”

Peculiarities of LaFeO3 nanocrystals formation via glycine-nitrate combustion

“…The most important factor among them is the redox composition of the initial solution, which was previously shown [21][22][23] to define the combustion conditions and temperature in the reaction zone. Despite much research [10,24,25] being focused on obtaining lanthanum orthoferrite by solution combustion synthesis, the influence of redox composition on processes of LaFeO 3 nanocrystal formation has not been studied in detail.…”