Hydrogen production in a neutral aqueous solution with a water-soluble copper complex

Xin, Zhi-Juan; Si, Lina; Li, Chengbo; Lei, You-Jia; Xue, Dong‐Xu; Gao, Xue‐Wang; Wang, Hongyan

doi:10.1016/j.ijhydene.2016.11.103

Cited by 24 publications

(21 citation statements)

References 36 publications

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“…CPE under these conditions using a GC WE at E appl = −1.40 V vs NHE gave a FE H2 of 95% with a TON H2 of ∼700 after 2 h. Postelectrolysis analysis using DLS, SEM, and EDX spectroscopy showed no evidence of heterogeneous species, and solution UV–vis spectra were almost identical before and after catalysis. 333…”

Section: Homogeneous Catalysismentioning

confidence: 99%

Electro- and Solar-Driven Fuel Synthesis with First Row Transition Metal Complexes

et al. 2019

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The synthesis of renewable fuels from abundant water or the greenhouse gas CO 2 is a major step toward creating sustainable and scalable energy storage technologies. In the last few decades, much attention has focused on the development of nonprecious metal-based catalysts and, in more recent years, their integration in solid-state support materials and devices that operate in water. This review surveys the literature on 3d metal-based molecular catalysts and focuses on their immobilization on heterogeneous solid-state supports for electro-, photo-, and photoelectrocatalytic synthesis of fuels in aqueous media. The first sections highlight benchmark homogeneous systems using proton and CO 2 reducing 3d transition metal catalysts as well as commonly employed methods for catalyst immobilization, including a discussion of supporting materials and anchoring groups. The subsequent sections elaborate on productive associations between molecular catalysts and a wide range of substrates based on carbon, quantum dots, metal oxide surfaces, and semiconductors. The molecule–material hybrid systems are organized as “dark” cathodes, colloidal photocatalysts, and photocathodes, and their figures of merit are discussed alongside system stability and catalyst integrity. The final section extends the scope of this review to prospects and challenges in targeting catalysis beyond “classical” H 2 evolution and CO 2 reduction to C 1 products, by summarizing cases for higher-value products from N 2 reduction, C x >1 products from CO 2 utilization, and other reductive organic transformations.

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Section: Homogeneous Catalysismentioning

confidence: 99%

Electro- and Solar-Driven Fuel Synthesis with First Row Transition Metal Complexes

et al. 2019

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“…Square planar copper corroles can evolve H 2 electrocatalytically via an heterolytic pathway, where a Cu hydride reacts with a solution proton [28], while a Cu(II) complex bearing a non-innocent thiosemicarbazone ligand exhibits metal-assisted ligand-centered electrocatalytic H 2 evolution [29]. Other Cu(II) molecular catalysts involving tetradendate triazenido [30], Schiff base [31,32], oxamato [33], 2 of 13 oxamido [34], phenanthroline [35] and imidazole-based [36] ligands have been recently presented. Notably, many of those catalysts decompose under reductive conditions to afford H 2 evolving materials, thus part of their activity is attributed to heterogeneous deposits of nanoparticles [19].…”

Section: Introductionmentioning

confidence: 99%

“…Catalysts 2020, 10, x FOR PEER REVIEW 2 of 14 [30], Schiff base [31,32], oxamato [33], oxamido [34], phenanthroline [35] and imidazole-based [36] ligands have been recently presented. Notably, many of those catalysts decompose under reductive conditions to afford H2 evolving materials, thus part of their activity is attributed to heterogeneous deposits of nanoparticles [19].…”

Section: Introductionmentioning

confidence: 99%

Reactivity and Mechanism of Photo- and Electrocatalytic Hydrogen Evolution by a Diimine Copper(I) Complex

et al. 2020

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The tetrahedral copper(I) diimine complex [Cu(pq)2]BF4 displays high photocatalytic activity for the H2 evolution reaction with a turnover number of 3564, thus representing the first type of a Cu(I) quinoxaline complex capable of catalyzing proton reduction. Electrochemical experiments indicate that molecular mechanisms prevail and DFT calculations provide in-depth insight into the catalytic pathway, suggesting that the coordinating nitrogens play crucial roles in proton exchange and hydrogen formation.

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“…22 Recently, we demonstrated a water-soluble copper complex featuring a planar polypyridine ligand that can promote hydrogen production in a neutral aqueous solution at a low overpotential. 26 These studies indicate that a copper complex is a promising non-noble metal catalyst for hydrogen production.…”

Section: ■ Introductionmentioning

confidence: 99%

Thin Copper-Based Film for Efficient Electrochemical Hydrogen Production from Neutral Aqueous Solutions

Xin

Lei

et al. 2017

ACS Sustainable Chem. Eng.

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Here, we report a water-soluble copper(II) complex acting as a hydrogen evolution catalyst in a neutral aqueous solution, which could be further developed to form water reduction material through electrodeposition. The material with extremely low loading of 33 μg Cu cm −2 showed impressive TON value of 5876 and TOF of 734 h −1 in 8 h CPE experiment in a neutral phosphate buffer solution. In X-ray photoelectron spectroscopy (XPS), the high-resolution C 1s peak is corresponding to a CC bond at 284.8 eV, C−N bond at 285.6 eV, C−O bond at 286.4 eV, and two different types of nitrogen configurations at around 398.5 and 399.9 eV are ascribed to pyridinic CN and tertiary amine C−N bonds, respectively, which implies that the ligand might be incorporated into the copper active material. It is assumed that the presence of the ligand has an influence on the activity and stability of the deposit.

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Hydrogen production in a neutral aqueous solution with a water-soluble copper complex

Cited by 24 publications

References 36 publications

Electro- and Solar-Driven Fuel Synthesis with First Row Transition Metal Complexes

Electro- and Solar-Driven Fuel Synthesis with First Row Transition Metal Complexes

Reactivity and Mechanism of Photo- and Electrocatalytic Hydrogen Evolution by a Diimine Copper(I) Complex

Thin Copper-Based Film for Efficient Electrochemical Hydrogen Production from Neutral Aqueous Solutions

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