Solar photoelectrocatalytic oxidation of urea in water coupled to green hydrogen production

Rioja-Cabanillas, Adriana; McMichael, Stuart; Tolosana-Moranchel, A.; Alkharabsheh, Salem; Skillen, Nathan; Fernández‐Ibáñez, Pilar; Byrne, John

doi:10.1016/j.jclepro.2023.138200

Cited by 11 publications

(5 citation statements)

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“…In addition to electrocatalytic urea electrolysis devices, photoelectrocatalytic urea electrolysis devices also have broad prospects for H 2 production. 51,261–263 For instance, Rioja-Cabanillas et al synthesized WO 3 platelets on fluorine-doped tin oxide glass as the anode and assembled it with a Pt-coated Ti mesh cathode to form the UOR‖HER photoelectrochemical system (Fig. 22a).…”

Section: Uor In Energy Environment and Other Applicationsmentioning

confidence: 99%

“…Simultaneously, H 2 production reached 3.09 × 10 −1 mmol after 1 h irradiation, with an average rate of 309 μmol h −1 and an FE of 87.3%. 261 Kim et al further reduced the energy consumption of the photoelectrocatalytic urea electrolysis system. They combined WO 3 and g-C 3 N 4 as a direct Z-scheme photocatalyst and electroplated it on Ni-deposited carbon felt to obtain Ni-modified WO 3 /g-C 3 N 4 nanocomposite (WO/CN–Ni@CF).…”

Section: Uor In Energy Environment and Other Applicationsmentioning

confidence: 99%

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Urea catalytic oxidation for energy and environmental applications

Gao,

Zhang,

Wang

et al. 2024

Chem. Soc. Rev.

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Section: Uor In Energy Environment and Other Applicationsmentioning

confidence: 99%

Section: Uor In Energy Environment and Other Applicationsmentioning

confidence: 99%

Urea catalytic oxidation for energy and environmental applications

Gao,

Zhang,

Wang

et al. 2024

Chem. Soc. Rev.

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“…Under illumination, the semiconductor electrode can produce ROS with strong oxidation. It is widely used in various photochemical transformations containing pollutants removal, ROS production, and the reduction of proton/water to molecular hydrogen [83][84][85][86][87][88][89][90][91][92][93][94][95][96][97][98].…”

Section: Photo-electrocatalytic Hydrogen Production Coupled With Poll...mentioning

confidence: 99%

Hydrogen Production via Electrolysis of Wastewater

Huang,

Fang,

Pan

et al. 2024

Nanomaterials

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The high energy consumption of traditional water splitting to produce hydrogen is mainly due to complex oxygen evolution reaction (OER), where low-economic-value O2 gas is generated. Meanwhile, cogeneration of H2 and O2 may result in the formation of an explosive H2/O2 gas mixture due to gas crossover. Considering these factors, a favorable anodic oxidation reaction is employed to replace OER, which not only reduces the voltage for H2 production at the cathode and avoids H2/O2 gas mixture but also generates value-added products at the anode. In recent years, this innovative strategy that combines anodic oxidation for H2 production has received intensive attention in the field of electrocatalysis. In this review, the latest research progress of a coupled hydrogen production system with pollutant degradation/upgrading is systematically introduced. Firstly, wastewater purification via anodic reaction, which produces free radicals instead of OER for pollutant degradation, is systematically presented. Then, the coupled system that allows for pollutant refining into high-value-added products combined with hydrogen production is displayed. Thirdly, the photoelectrical system for pollutant degradation and upgrade are briefly introduced. Finally, this review also discusses the challenges and future perspectives of this coupled system.

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“…This "one-stone-two-bird" strategy presents a straightforward protocol for efficiently breaking C─C bonds in organic and biomass transformations via PEC oxidation. WO 3 , Fe 2 O 3 , BiVO 4 , and CdS have been used in PEC systems [26][27][28][29][30][31][32][33] Surface engineering, interface engineering, and bulk engineering techniques have been utilized to enhance the PEC performances of semiconductor photoelectrodes, attributed to the semiconductor bandgap, light absorption range, and self-limiting nature [34][35][36][37][38][39] The modulation of the electronic structure significantly influences the reactivity of the electrodes [40,41] The d-band center theory of electrode structure (i.e., the movement of the d-band center) can change the adsorption/desorption capacity of the electrode toward the reaction substrates and its intermediates [42,43] Shen et al achieved modulation of the d-band center by constructing a heterojunction to optimize the electronic structure of Co through charge transfer at the interface, resulting in weak adsorption of *H at the electrode [44] Hu et al quantitatively investigated the size dependence of the activity using d-band centers by controlling the size of Ru nanocrystals on the electrode surface [45] For bulk engineering, doping can lead to a lattice distortion-induced lattice strain effect in native phase crystals. The lattice strain effect has also been shown to be used to modulate the adsorption/desorption capacity between substrates and catalyst surfaces, which has become a common strategy for improving electrode performance.…”

Section: Introductionmentioning

confidence: 99%

Precise Lattice‐Strain Modulation of Hematite Enabled by Gradient Doping of Mn for Enhanced Photoelectrocatalytic Oxidative C─C Bond Scission

Li,

Wu,

et al. 2024

Small Structures

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The high‐value utilization of biomass feedstock is fascinating but limited by efficient C─H activation to break C─C bonds. Herein, F‐Fe2O3‐Mn photoanodes with modulable compressive strain are fabricated by gradient infusion of Mn into F‐doped hematite (F‐Fe2O3), which is illustrated to be highly efficient for oxidative C─C bond cleavage of various bio‐based 1,2‐diols to produce benzoic acids or aromatic ketones (94.5–97.2% yields) in photoelectrocatalytic (PEC) device, coupling with a high H2 production of 1180 μmol cm−2 (≈96% yield). The gradient doping of Mn species into the photoelectrode bulk results in improved photoexcited carriers separation and transfer efficiency of the photoelectrode (3.41 mA cm−2). On the other hand, the lattice distortion induced by Mn doping also leads to a strain effect on F─Fe2O3─Mn, which can precisely modulate the photoelectrode electronic structure. Control experiments, in situ characterization, and theoretical calculations elaborate that compressive strain is capable of adjusting the position of the d‐band center to facilitate C─H activation, remarkably enabling PEC oxidative C─C bond breaking of 1,2‐diol and the desorption of the oxidized product. This “one‐stone‐two‐bird” strategy presents a straightforward protocol for efficiently breaking C─C bonds in organic and biomass transformations via PEC oxidation.

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Solar photoelectrocatalytic oxidation of urea in water coupled to green hydrogen production

Cited by 11 publications

References 50 publications

Urea catalytic oxidation for energy and environmental applications

Urea catalytic oxidation for energy and environmental applications

Hydrogen Production via Electrolysis of Wastewater

Precise Lattice‐Strain Modulation of Hematite Enabled by Gradient Doping of Mn for Enhanced Photoelectrocatalytic Oxidative C─C Bond Scission

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