CO<sub>2</sub>, water, and sunlight to hydrocarbon fuels: a sustained sunlight to fuel (Joule-to-Joule) photoconversion efficiency of 1%

Sorcar, Saurav; Hwang, Yunju; Lee, Jaewoong; Kim, Hwapyong; Grimes, Keltin M.; Grimes, Craig A.; Jung, Jin Seung; Cho, Chang‐Hee; Majima, Tetsuro; Hoffmann, Michael R.; In, Su‐Il

doi:10.1039/c9ee00734b

Cited by 121 publications

(86 citation statements)

References 69 publications

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“…[ 1,2 ] Due to sunlight merely available in the daytime, it is urgently needed to develop efficient approach for solar energy storage. The reported approaches include photocatalytic water splitting [ 3–12 ] and CO 2 reduction [ 13–32 ] to synthesize solar fuels, and so on. Among the approaches, photocatalytic CO 2 reduction is very appealing because it could afford an approach of simultaneously addressing the two issues of global warming and solar energy storage.…”

Section: Introductionmentioning

confidence: 99%

Formation of NiCo Alloy Nanoparticles on Co Doped Al₂O₃ Leads to High Fuel Production Rate, Large Light‐to‐Fuel Efficiency, and Excellent Durability for Photothermocatalytic CO₂ Reduction

Zhang

et al. 2020

Advanced Energy Materials

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Unique nanocomposites of NiCo alloy nanoparticles with Ni/Co molar ratios of 1.86, 1.60, and 0.38 supported on Co‐doped Al2O3 nanosheets are prepared by a facile approach. Very high fuel production rates of CO (rCO) and H2 (rH2) (70.53 and 63.46 mmol min−1 g−1) and light‐to‐fuel efficiency (η, 29.7%) are achieved via photothermocatalytic CO2 reduction by methane (CRM) on Ni1.60Co/Co‐Al2O3 simply utilizing focused UV‐visible‐infrared (UV‐vis‐IR) illumination. Ni1.60Co/Co‐Al2O3 also demonstrates high rCO and rH2 values (50.99 and 39.72 mmol min−1 g−1) as well as high η value (26.3%) under λ > 560 nm focused vis‐IR illumination. The high photothermocatalytic activity is derived from the light‐driven thermocatalytic CRM. A novel photoactivation is found to substantially promote the light‐driven thermocatalytic CRM due to the apparent activation energy being considerably reduced upon illumination. It is found that the Ni/Co molar ratio in the NiCo/Co‐Al2O3 samples has an important effect on the photothermocatalytic durability. The samples of Ni1.60Co/Co‐Al2O3 and Ni1.86Co/Co‐Al2O3 with a higher Ni/Co molar ratio demonstrate excellent photothermocatalytic durability, while the Ni0.38Co/Co‐Al2O3 with a lower Ni/Co molar ratio has less durability. This is attributed to carbon deposition rate being significantly reduced on Ni1.60Co/Co‐Al2O3 and Ni1.86Co/Co‐Al2O3 as compared to its single metal counterparts.

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Section: Introductionmentioning

confidence: 99%

Formation of NiCo Alloy Nanoparticles on Co Doped Al₂O₃ Leads to High Fuel Production Rate, Large Light‐to‐Fuel Efficiency, and Excellent Durability for Photothermocatalytic CO₂ Reduction

Zhang

et al. 2020

Advanced Energy Materials

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“…[25] XPS analysis of Pt provided peaks at 71.2 and 74.6 eV, which were assigned to metallic states. [26] TEM and HRTEM images provided further information on the particle size and distribution of Cu 0.1 Pt 0.5 /PC-50. Some nanoparticles were dispersed on PC-50 with diameters from 3.5 to 6 nm (see Figure S4).…”

Section: Angewandte Chemiementioning

confidence: 99%

Platinum‐ and CuO_x‐Decorated TiO₂ Photocatalyst for Oxidative Coupling of Methane to C₂ Hydrocarbons in a Flow Reactor

Xie

Rao

et al. 2020

Angewandte Chemie

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Oxidative coupling of methane (OCM) is considered one of the most promising catalytic technologies to upgrade methane. However, C 2 products (C 2 H 6 /C 2 H 4) from conventional methane conversion have not been produced commercially owing to competition from overoxidation and carbon accumulation at high temperatures. Herein, we report the codeposition of Pt nanoparticles and CuO x clusters on TiO 2 (PC-50) and use of the resulting photocatalyst for OCM in a flow reactor operated at room temperature under atmospheric pressure for the first time. The optimized Cu 0.1 Pt 0.5 /PC-50 sample showed a highest yield of C 2 product of 6.8 mmol h À1 at a space velocity of 2400 h À1 , more than twice the sum of the activity of Pt/PC-50 (1.07 mmol h À1) and Cu/PC-50 (1.9 mmol h À1), it might also be the highest among photocatalytic methane conversions reported so far under atmospheric pressure. A high C 2 selectivity of 60 % is also comparable to that attainable by conventional high-temperature (> 943 K) thermal catalysis. It is proposed that Pt functions as an electron acceptor to facilitate charge separation, while holes could transfer to CuO x to avoid deep dehydrogenation and the overoxidation of C 2 products.

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“…However, when the concentration of Na2S is high, the pH becomes high. High pH values are thermodynamically disadvantageous in the reaction represented by Equation (4). As described in the Equations (5)-(7), SO3 2− and S 2− consume holes, and promote hydrogen generation reaction.…”

Section: Proposed Hydrogenation Mechanismmentioning

confidence: 99%

“…Global energy shortage and the environmental pollution associated with burning fossil fuels have stimulated people's interest in clean and sustainable energy. Photocatalytic hydrogen evolution through water splitting and photocatalytic CO 2 reduction on semiconductor photocatalysts, are of interest due to their intriguing application to converting solar energy to chemical energy [1][2][3][4][5][6]. Among the two processes, the photocatalytic hydrogen production plays an important role, producing hydrogen for society.…”

Section: Introductionmentioning

confidence: 99%

The Effect of Cu and Ga Doped ZnIn2S4 under Visible Light on the High Generation of H2 Production

et al. 2019

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A Cu+ and Ga3+ co-doped ZnIn2S4 photocatalyst (Zn(1−2x)(CuGa)xIn2S4) with controlled band gap was prepared via a simple one-step solvothermal method. Zn(1−2x)(CuGa)xIn2S4 acted as an efficient photocatalyst for H2 evolution under visible light irradiation (λ > 420 nm; 4500 µW/cm2). The effects of the (Cu and Ga)/Zn molar ratios of Zn(1−2x)(CuGa)xIn2S4 on the crystal structure (hexagonal structure), morphology (microsphere-like flower), optical property (light harvesting activity and charge hole separation ability), and photocatalytic activity have been investigated in detail. The maximum H2 evolution rate (1650 µmol·h−1·g−1) was achieved over Zn0.84(CuGa)0.13In2S4, showing a 3.3 times higher rate than that of untreated ZnIn2S4. The bandgap energy of Zn(1−2x)(CuGa)xIn2S4 decreased from 2.67 to 1.90 eV as the amount of doping Cu+ and Ga3+ increased.

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CO₂, water, and sunlight to hydrocarbon fuels: a sustained sunlight to fuel (Joule-to-Joule) photoconversion efficiency of 1%

Abstract: Cu–Pt bimetallic nanoparticles deposited over blue titania exhibiting record photoconversion efficiency for CO2 photoreduction into fuels.

Cited by 121 publications

References 69 publications

Formation of NiCo Alloy Nanoparticles on Co Doped Al₂O₃ Leads to High Fuel Production Rate, Large Light‐to‐Fuel Efficiency, and Excellent Durability for Photothermocatalytic CO₂ Reduction

Formation of NiCo Alloy Nanoparticles on Co Doped Al₂O₃ Leads to High Fuel Production Rate, Large Light‐to‐Fuel Efficiency, and Excellent Durability for Photothermocatalytic CO₂ Reduction

Platinum‐ and CuO_x‐Decorated TiO₂ Photocatalyst for Oxidative Coupling of Methane to C₂ Hydrocarbons in a Flow Reactor

The Effect of Cu and Ga Doped ZnIn2S4 under Visible Light on the High Generation of H2 Production

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CO2, water, and sunlight to hydrocarbon fuels: a sustained sunlight to fuel (Joule-to-Joule) photoconversion efficiency of 1%

Abstract: Cu–Pt bimetallic nanoparticles deposited over blue titania exhibiting record photoconversion efficiency for CO2 photoreduction into fuels.

Cited by 121 publications

References 69 publications

Formation of NiCo Alloy Nanoparticles on Co Doped Al2O3 Leads to High Fuel Production Rate, Large Light‐to‐Fuel Efficiency, and Excellent Durability for Photothermocatalytic CO2 Reduction

Formation of NiCo Alloy Nanoparticles on Co Doped Al2O3 Leads to High Fuel Production Rate, Large Light‐to‐Fuel Efficiency, and Excellent Durability for Photothermocatalytic CO2 Reduction

Platinum‐ and CuOx‐Decorated TiO2 Photocatalyst for Oxidative Coupling of Methane to C2 Hydrocarbons in a Flow Reactor

The Effect of Cu and Ga Doped ZnIn2S4 under Visible Light on the High Generation of H2 Production

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CO₂, water, and sunlight to hydrocarbon fuels: a sustained sunlight to fuel (Joule-to-Joule) photoconversion efficiency of 1%

Formation of NiCo Alloy Nanoparticles on Co Doped Al₂O₃ Leads to High Fuel Production Rate, Large Light‐to‐Fuel Efficiency, and Excellent Durability for Photothermocatalytic CO₂ Reduction

Formation of NiCo Alloy Nanoparticles on Co Doped Al₂O₃ Leads to High Fuel Production Rate, Large Light‐to‐Fuel Efficiency, and Excellent Durability for Photothermocatalytic CO₂ Reduction

Platinum‐ and CuO_x‐Decorated TiO₂ Photocatalyst for Oxidative Coupling of Methane to C₂ Hydrocarbons in a Flow Reactor