Simultaneous production of glyceric acid and hydrogen from the photooxidation of crude glycerol using TiSi2

Kondamudi, Narasimharao; Misra, M.; Banerjee, Subarna; Mohapatra, Srikanta; Mohapatra, Susanta K.

doi:10.1016/j.apcatb.2012.05.006

Cited by 36 publications

(27 citation statements)

References 33 publications

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“…One innovating aspect of the present study is the replacement of the redox couples (such as I -/I 3 -) in DSCCs with organic and inorganic compounds naturally occurring in urban wastewater, which collectively can act as an effective electrolyte. The simultaneous production of hydrogen from wastewater may also be achieved according to pioneering works on photoelectrochemical cells [18][19][20][21].…”

Section: Introductionmentioning

confidence: 99%

“…nutrients) in contaminated water and wastewater, making 11 this the main scientific and technological challenge for the water industry. In this study, 12 inspired by the PhotoFuelCell system proposed by Lianos and coworkers [16][17][18][19], we 13 demonstrate that dye-sensitized photoelectrochemical cells (DSPCs) may be valuable 14 to address this technological issue. 15 The concept of DSPCs was similar with that of dye-sensitized solar cells (DSSCs).…”

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confidence: 99%

“…19 The utilization of freely available solar energy as the only energy input makes 20 photocatalysis a sustainable and green process. However, one of the most important 21 advancement in wastewater treatment should be the development of a new process that 1 can simultaneously capture the chemical energy of the oxidized contaminants while 2 meeting the effluent quality standards [1].…”

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confidence: 99%

“…In a 16 DSSC, the sensitizer, which is usually a dye, absorbs the incident photons resulting in 17 the excitation of electrons from the highest occupied molecular orbital (HOMO) to the 18 lowest unoccupied molecular orbital (LUMO) of the dye. The excited electrons are then 19 injected to the conduction band (CB) of the photoanode material (usually TiO 2 ), they 20 further transfer to the photoanode fluorine-doped tin oxide (FTO) supporting the TiO 2 …”

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confidence: 99%

“…Briefly, the concentration of EE2 was detected by 18 High Performance Liquid Chromatography (HPLC, Agilent 1100). TOC was 19 measured by means of a Shimadzu TOC-V VPN with an ANSI-V auto sampler. TN was 20 measured using multi N/C 2100 TOC analyzer (Analytikjena, Germany).…”

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confidence: 99%

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Dye-sensitized photoelectrochemical cell on plasmonic Ag/AgCl @ chiral TiO 2 nanofibers for treatment of urban wastewater effluents, with simultaneous production of hydrogen and electricity

Wang

Puma

et al. 2015

Applied Catalysis B: Environmental

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Section: Introductionmentioning

confidence: 99%

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confidence: 99%

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confidence: 99%

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confidence: 99%

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confidence: 99%

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Dye-sensitized photoelectrochemical cell on plasmonic Ag/AgCl @ chiral TiO 2 nanofibers for treatment of urban wastewater effluents, with simultaneous production of hydrogen and electricity

Wang

Puma

et al. 2015

Applied Catalysis B: Environmental

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Kinetic modeling of Pt/C catalyzed aqueous phase glycerol conversion with in situ formed hydrogen

et al. 2015

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Detailed kinetic modeling of Pt/C catalyzed conversion of glycerol to lactic acid, glycols, and alcohols with in situ formed hydrogen is reported. Experimental concentration-time profiles were obtained in a batch slurry reactor at different glycerol concentrations, nitrogen partial pressures, and NaOH concentrations in a temperature range of 130-1608C. Six different kinetic models were evaluated to describe the competing dehydrogenation, hydrogenolysis, dehydration, and CAC cleavage reactions, and discriminated to fit the experimental data. It is found that a "dual-similar-site" mechanism involving alkali promoted dehydrogenation, on two adjacent Pt sites to affect CAC and CAO cleavage best describes the experimental data. The dehydrogenation reaction proceeds with a significantly lower activation barrier (E a 5 53 kJ/mol) compared with the noncatalytic hydrothermal conversion (E a 5 128 kJ/mol). The activation energy for glycerol hydrogenolysis on Pt/C catalyst without adding hydrogen is estimated to be 64 kJ/mol. a Rate/adsorption constants with 95% confidence level b Rate constant unit: m 3 /kg cat.h. c Unit of E a and DH: kJ/mol. d Sensitivity analysis procedures in Supporting Information Table S4-1, unit: kJ/mol. Scheme 6. Energy diagram of tandem catalysis vs. hydrothermal and conventional hydrogenolysis reactions (left: hydrothermal conversion vs. catalytic dehydrogenation; right: hydrogenolysis with external H 2 vs. with in situ H 2 ).

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Artificial photosynthesis for high‐value‐added chemicals: Old material, new opportunity

Kim

et al. 2021

Carbon Energy

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Solar energy utilization has drawn attention due to ever‐increasing environmental and energy issues. Photoelectrochemical (PEC) and photocatalytic (PC) water splitting for hydrogen production, which is the most popular and well‐established solar‐to‐chemical conversion process, has been studied thoroughly to date but is now facing limitations related to low conversion efficiency. To resolve this issue, research in PEC cells or photocatalysts has recently aimed to produce alternative value‐added chemicals by modifying their redox reactions, which potentially enables high economic reward to compensate for the low efficiency. Here, various kinds of redox reactions that decouple classic water splitting reactions to produce value‐added chemicals via PEC and PC processes are introduced. Successful coupling of CO2 reduction, O2 reduction and organic synthesis with either water oxidation or water reduction is comprehensively discussed from the perspective of basic fundamental and product selectivity in terms of the band structure of materials, cocatalyst design, and thermodynamics and kinetics of the reactions. Throughout the review, future challenges and opportunities are suggested with respect to the redesigned artificial synthesis, which might be an alternative development for the commercialization of PEC or PC value‐added chemical production technologies in the near future.

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Simultaneous production of glyceric acid and hydrogen from the photooxidation of crude glycerol using TiSi2

Cited by 36 publications

References 33 publications

Dye-sensitized photoelectrochemical cell on plasmonic Ag/AgCl @ chiral TiO 2 nanofibers for treatment of urban wastewater effluents, with simultaneous production of hydrogen and electricity

Dye-sensitized photoelectrochemical cell on plasmonic Ag/AgCl @ chiral TiO 2 nanofibers for treatment of urban wastewater effluents, with simultaneous production of hydrogen and electricity

Kinetic modeling of Pt/C catalyzed aqueous phase glycerol conversion with in situ formed hydrogen

Artificial photosynthesis for high‐value‐added chemicals: Old material, new opportunity

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