The synthesis of platinum nanoparticles and their deposition on the active carbon fibers in one microreactor cycle

Luty–Błocho, Magdalena; Wojnicki, Marek; Pacławski, K.; Fitzner, K.

doi:10.1016/j.cej.2013.04.008

Cited by 42 publications

(21 citation statements)

References 41 publications

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“…A reduction method can also be applied for precious metal recovery. For example, vitamin C [18,19], sodium borohydrate [20], DMAB [21][22][23], hydrazine [24], ethanol [25], and methanol [26] can be used as reductants. First of all, those methods are not selective, i.e.…”

Section: Introductionmentioning

confidence: 99%

Kinetic studies of the removal of Pt(IV) chloride complex ions from acidic aqueous solutions using activated carbon

Wojnicki

Socha

Fitzner

2017

Reac Kinet Mech Cat

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In this paper, results showing the possibility of activated carbon application in platinum recovery from aqueous solution are presented. The studies were performed with the commercially available activated carbon, and the results can be easily transferred directly to the industry. The influence of pH, mixing rate, and amount of activated carbon as well as platinum(IV) initial concentration on the rate of adsorption was investigated. It was shown that after adsorption platinum is present on the surface of activated carbon in two oxidation states, ?2 and ?4, where shares of those forms are equal to 47 and 53%. Moreover, the enthalpy and entropy of activation were determined and are equal to 16.14 ± 075 kJ mol -1 and 42.19 ± 0.28 J mol -1 K -1 .

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Section: Introductionmentioning

confidence: 99%

Kinetic studies of the removal of Pt(IV) chloride complex ions from acidic aqueous solutions using activated carbon

Wojnicki

Socha

Fitzner

2017

Reac Kinet Mech Cat

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“…Van Dam and Van Bekkum [22] investigated the process of Pt adsorption on the surface of activated carbon and postulated that it is possible to form π-complexes between Pt 2+ and oxygen-containing functional groups on the basal plane edges. It is well known that PtNPs exhibit strong surface charge [18], which keeps these nanoparticles separated. This charge is probably due to the hydroxide ions adsorbed on their surface.…”

Section: Resultsmentioning

confidence: 99%

Catalytic Properties of Platinum Nanoparticles Obtained in a Single Step Simultaneous Reduction of Pt(IV) Ions and Graphene Oxide

Wojnicki¹,

Luty–Błocho²,

Mech³

et al. 2015

J Flow Chem

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A composite material consisting of metallic platinum nanoparticles and reduced graphene oxide was successfully obtained in microflow reactor. Moreover, subnanometric platinum particles were observed. Reduced graphene oxide plays an important role as a stabilizing agent for platinum nanoparticles. Reduced graphene oxide coverage and platinum particle size as well as size distribution depend mainly on initial concentration of platinum(IV) ions. High level of reduced graphene oxide coverage by platinum nanoparticles (PtNPs) was obtained and is equal to 71%. This in turn effects significantly the mass ratio of reduced graphene oxide to PtNPs which is equal to 49% (w/w). Fourier transform infrared (FT-IR) and X-ray photoelectron spectroscopy (XPS) analysis of the obtained materials were performed. Also, catalytic properties of the obtained composite material consisting of PtNPs at reduced graphene oxide surface, towards electrochemical glucose oxidation, were investigated. It was found that the studied materials exhibit high catalytic activity for glucose electro-oxidation process.

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“…Especially on the fabrication of micro-and nano-size particles, emulsions, vesicles and etc., the control of the size can be realized in the micro-channels of such a micro-reactor. So, many researchers have studied about the application of micro-reactors to such solid or gel-like particle production in the chemical engineering fields [5][6][7][8]. However, there exists a mixing problem in such a reactor because the Reynolds number is very low.…”

Section: Introductionmentioning

confidence: 99%

Flow characteristics in a micro-cavity swept by a visco-elastic fluid

Suzuki

Hidema

Komoda

2015

Experimental Thermal and Fluid Science

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The synthesis of platinum nanoparticles and their deposition on the active carbon fibers in one microreactor cycle

Cited by 42 publications

References 41 publications

Kinetic studies of the removal of Pt(IV) chloride complex ions from acidic aqueous solutions using activated carbon

Kinetic studies of the removal of Pt(IV) chloride complex ions from acidic aqueous solutions using activated carbon

Catalytic Properties of Platinum Nanoparticles Obtained in a Single Step Simultaneous Reduction of Pt(IV) Ions and Graphene Oxide

Flow characteristics in a micro-cavity swept by a visco-elastic fluid

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