Thermochemical splitting of CO2 using solution combustion synthesized lanthanum–strontium–manganese perovskites

Takalkar, Gorakshnath; Bhosale, Rahul R.; Almomani, Fares; Rashid, Suliman; Qiblawey, Hazim; Saad, Mohamed; Khraisheh, Majeda; Kumar, Gopalakrishnan; Gupta, Ram B.; Shende, Rajesh V.

doi:10.1016/j.fuel.2020.119154

Cited by 24 publications

(18 citation statements)

References 42 publications

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“…Dey et al 18 examined the redox reactivity of Ln 0.5 A 0.5 MnO 3 (Ln = Lanthanide, A = Ca, Sr) perovskites toward thermochemical WS and CDS cycles conducted in the temperature range of 1200°C (TR step) and 900°C (re‐oxidation step). As per Takalkar et al, 19 among the La x Sr 1‐x MnO 3‐δ (where x = 0.1‐0.9) perovskites synthesized via combustion method, La 0.6 Sr 0.41 Mn 0.99 O 2.993 and La 0.30 Sr 0.70 Mn 0.99 O 2.982 showed the highest O 2 release and CO production aptitude, respectively. Cooper et al 20 reported that the O 2 exchange capacity of the La‐Mn‐O perovskites could be enhanced by placing Ca/Sr on the A‐site and Al on the B‐site.…”

Section: Introductionmentioning

confidence: 66%

Thermodynamic analysis of Mg _x Fe _3‐x O ₄ redox CO ₂ conversion solar thermochemical cycle

Bhosale

Rashid

2021

Intl J of Energy Research

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Summary The solar‐to‐fuel energy conversion efficiency (0.25emηsolar−to−fuel) of the MgxFe3‐xO4 (x = 0.2‐1.0) based CO2 splitting (CDS) cycle is estimated at steady reduction (Tred) and oxidation temperatures (Toxd) equal to 1673 K and 1273 K, respectively. The efficiency analysis is performed using the experimental results reported in the sol‐gel‐derived MgxFe3‐xO4 based CDS cycle. The redox nonstoichiometry allied with the MgxFe3‐xO4 during the reduction (δred) and oxidation steps (δoxd) is determined based on the experimentally obtained results. Efficiency analysis is conducted by considering the heat energy required to heat inert sweep gas and CO2. Heat penalty allied with the separation of the inert sweep gas from O2 and CO2 from CO is also considered. The solid‐to‐solid heat recovery effectiveness (εss) is assumed to be zero, whereas the gas‐to‐gas heat recovery effectiveness (εgg) kept steady at 0.5. The release of a high amount of O2 and the production of an elevated CO level is responsible for the rise in the energy penalty associated with both separators. The obtained results also indicate that the total thermal energy required (Q̇MgF−TC) to drive the cycle depends heavily on the sensible heat required (Q̇MgF−sens) for raising the temperature of MgxFe3‐xO4 from Toxd to Tred. The obtained results also show that 0.25emηsolar−to−fuel depends heavily on the amount of CO produced and hence recorded to be the highest (4.3%) in the case of MgFe2O4.

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Section: Introductionmentioning

confidence: 66%

Thermodynamic analysis of Mg _x Fe _3‐x O ₄ redox CO ₂ conversion solar thermochemical cycle

Bhosale

Rashid

2021

Intl J of Energy Research

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“…e europium sorption isotherms as a function of time were developed by estimating the concentration of europium nitrate retained in tausonite at different contact times (1,2,3,4,5,7,16,18,20,22,24, and 48 h). Sorption kinetics were modelled using pseudo-order expressions (0.5 ≤ n ≤ 2), based on the reduced Van't Hoff equation (see equation (1)) and compared with empirical pseudo-first-order model (Lagergren and Elovich equation), pseudo-second-order, and intraparticle diffusion.…”

Section: Sorption Kinetics Modellingmentioning

confidence: 99%

“…Among the different structures of perovskites, those of the ATiO 3 type (A � Ca, Ba, Sr, etc.) are the most interesting due to their optical and electronic properties [6,7]. Perovskites have high tolerance to metal substitution in their crystalline structure, excellent thermal stability, and resistance to sintering of substituted metals [8].…”

Section: Introductionmentioning

confidence: 99%

Prediction of Europium Retention in Perovskite: Potential Candidates for an Engineering Barrier in the Disposal of Radioactive Waste

Ortiz-Oliveros

Espinosa

Ávila-Pérez

et al. 2021

Journal of Chemistry

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Perovskites, such as tausonite, are crystalline metal oxides with excellent optical and photocatalytic properties and have also been used successfully in the retention of metals, simulating the isotopes of uranium and plutonium. In this work, different pseudo-order and thermodynamic models were studied to achieve the prediction of the sorption of Eu3+ (chemical analogous for actinides) in tausonite. The effects of gamma irradiation and temperature on the structural characteristics of the material were determined, as an additional step in the evaluation of material as an engineering barrier in the disposal of radioactive waste. The results obtained show that the tausonite is resistant to the gamma irradiation and thermal energy. Likewise, it was possible to determine that europium sorption occurs through an exothermic and spontaneous reaction, as well as through the formation of surface complexes, where Eu3+ ions bind to sites on the tausonite by dipole-dipole interaction. Furthermore, it was shown that the sorption mechanism is influenced by diffusive phenomena, which participate in the formation of surface complexes. Additionally, a new sorption model with respect to pH was proposed, which allowed determining the physical parameter π. The evidence obtained suggests that π is a physical parameter that relates pH to an optimal value and could explain the equilibrium between the surface complexes that tausonite forms with europium. Likewise, the evidence suggests that 50 kg of tausonite would have the capacity to retain at least 26.59 g of alpha-emitting radionuclides, equivalent to a waste package (900 kg) with a maximum activity of 4000 Bq/g.

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“…Despite these drawbacks that have severely limited their advanced applications, , perovskites have attracted significant attention after being rediscovered nearly a decade ago by the solar cell community. Their excellent performance, including tunable emission, extended visible range activity, high photoluminescence (PL) quantum yields (QYs), and narrow-band emission are important characteristics for particular applications. , Several reports have also recently been published reinforcing the candidature of the perovskites for promising uses, such as solar cells, artificial photochemistry, light-emitting devices, and optoelectronics. − …”

Section: Introductionmentioning

confidence: 99%

Highly Water-Stable Polymer–Perovskite Nanocomposites

Carrizo

Belmonte

Santos

et al. 2021

ACS Appl. Mater. Interfaces

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The excellent performance of hybrid metal-halide perovskite nanocrystals (NCs) contrasts with their unsatisfactory stability in a high-humidity environment or water. Herein, polymer composite lead-halide perovskites (LHPs) NCs were prepared by casting or spin-coating to produce a high fluorescence yield and a fully water-resistant material. Poly(L-lactide) (PLla), polypropylene glycol (PPGly), and polysulfone (PSU) commercial polymers were used to prepare suspensions of MAPbBr 3 −HDA NCs (MA: CH 3 NH 3 ; HDA: hexadecylamine). The MAPbBr 3 −HDA@PLla suspension exhibited a maximum fluorescence quantum yield of 93% compared to 43% for the pristine MAPbBr 3 −HDA NCs. Strong emissions around 528 nm were also observed, with the same full width at half maximum value of 20 nm, demonstrating the successful fabrication of brightly luminescent LHP NCs@polymer combinations. Time-resolved photoluminescence measurements directly observed the enhanced spontaneous emission of the NCs induced by the polymeric environment. However, the cast films of MAPbBr 3 −HDA NCs mixed with PLla or PPGly did not resist water immersion. On the contrary, MAPbBr 3 −HDA@PPGly/PSU films containing well-dispersed ∼10 nm LHP NCs retained a bright green fluorescence emission even after 18 months under air conditions or water immersion up to 45 °C. From water contact angle measurements, profilometry, and X-ray photoelectron spectroscopy data, it could be assumed that the slightly hydrophobic PSU polymer is responsible for the high water stability of the fluorescent films, which avoids MAPbBr 3 −HDA NC degradation. This work shows that the LHP NC dispersion in dissolved commodity polymers holds great promise toward the long-term stability of LHP NC composites for the future development of wearable electronic devices and other waterproof applications.

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Thermochemical splitting of CO2 using solution combustion synthesized lanthanum–strontium–manganese perovskites

Cited by 24 publications

References 42 publications

Thermodynamic analysis of Mg _x Fe _3‐x O ₄ redox CO ₂ conversion solar thermochemical cycle

Thermodynamic analysis of Mg _x Fe _3‐x O ₄ redox CO ₂ conversion solar thermochemical cycle

Prediction of Europium Retention in Perovskite: Potential Candidates for an Engineering Barrier in the Disposal of Radioactive Waste

Highly Water-Stable Polymer–Perovskite Nanocomposites

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Thermochemical splitting of CO2 using solution combustion synthesized lanthanum–strontium–manganese perovskites

Cited by 24 publications

References 42 publications

Thermodynamic analysis of Mg x Fe 3‐x O 4 redox CO 2 conversion solar thermochemical cycle

Thermodynamic analysis of Mg x Fe 3‐x O 4 redox CO 2 conversion solar thermochemical cycle

Prediction of Europium Retention in Perovskite: Potential Candidates for an Engineering Barrier in the Disposal of Radioactive Waste

Highly Water-Stable Polymer–Perovskite Nanocomposites

Contact Info

Product

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Thermodynamic analysis of Mg _x Fe _3‐x O ₄ redox CO ₂ conversion solar thermochemical cycle

Thermodynamic analysis of Mg _x Fe _3‐x O ₄ redox CO ₂ conversion solar thermochemical cycle