Carbonate-coordinated cobalt co-catalyzed BiVO4/WO3 composite photoanode tailored for CO2 reduction to fuels

Kim, Jin Hyun; Magesh, Ganesan; Kang, Hyun Joon; Marimuthu, Banu; Kim, Ju Hun; Lee, Jun Young; Lee, Jae Sung

doi:10.1016/j.nanoen.2015.04.022

Cited by 123 publications

(85 citation statements)

References 39 publications

(79 reference statements)

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“…S15b) after soaking in the above three electrolytes show that the PEC activity of the porous BiVO4 photoanode could keep unchanged in KHCO3 solution, while it is decreased in K2SO4 and KOH solution, especially sharp decreased in KOH solution. These results suggest that the porous BiVO4 photoanode is stable in KHCO3 weak alkaline solution [11,53]. The instability of BiVO4/NiFe-LDH photoanode in KOH may originate from the instability of pristine BiVO4 photoanode.…”

Section: Resultsmentioning

confidence: 77%

“…At an applied potential of about 0.75 V vs. RHE, the maximum ABPE of 1.07% can be achieved for BiVO4/NiFe-LDH photoanode. Moreover, the high efficiency achieved at a potential as low as 0.75 V vs. RHE provides a promising approach for assembling a tandem cell (water splitting [18,[43][44][45][46][47][48] or oxygen evolution coupling CO2 reduction to fuels [11,49,50]) or a PEC diode [1]. To further investigate the photoresponse of the BiVO4 and BiVO4/NiFe-LDH photoanodes, transient photocurrent measurements were carried out by LSV and chronoamperometry under chopped light illumination.…”

Section: Resultsmentioning

confidence: 99%

“…Metal oxides acting as photoanodes for PEC light conversion, such as TiO2 [5,6], α-Fe2O3 [7][8][9][10], WO3 [11,12], have attracted wide attention because of their low cost, environment-friendliness and stability under oxidizing conditions. Among them, BiVO4 is the top performer due to its relatively small band gap, adequate conduction band edge position and moderate charge transport properties [13][14][15][16][17][18].…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Promoting charge carrier utilization by integrating layered double hydroxide nanosheet arrays with porous BiVO4 photoanode for efficient photoelectrochemical water splitting

Huang

Xin

et al. 2017

Sci. China Mater.

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The increasing exploration of renewable and clean power sources have driven the development of highly active materials for photoelectrochemical (PEC) water splitting. However, it is still a great challenge to enhance the charge utilization. Herein, we report a facile method to fabricate composite photoanode with porous BiVO4 film as the photon absorber and layered double hydroxide (LDH) nanosheet arrays as the oxygen-evolution cocatalysts (OECs). The as-prepared BiVO4/NiFe-LDH photoanode shows an excellent performance for PEC water splitting benefitting from the synergistic effect of the superior charge separation efficiency facilitated by porous BiVO4 film and the excellent water oxidation activity resulting from LDH nanosheet arrays. A photocurrent density is 4.02 mA cm −2 at 1.23 V vs. the reversible hydrogen electrode (RHE). Furthermore, the O2 evolution rate at the surface of BiVO4/NiFe-LDH photoanode is as high as 29.6 µmol h −1 cm −2 and the high activity for water oxidation is maintained for over 30 h. Impressively, the performance of the as-fabricated composite photoanode for PEC water splitting can be further enhanced through incorporating a certain amount of Co 2+ cation into NiFe-LDH as OEC. The photocurrent density is achieved up to 4.45 mA cm −2 at 1.23 V vs. RHE. This value is the highest yet reported for un-doped BiVO4-based photoanodes so far.

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Section: Resultsmentioning

confidence: 77%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Promoting charge carrier utilization by integrating layered double hydroxide nanosheet arrays with porous BiVO4 photoanode for efficient photoelectrochemical water splitting

Huang

Xin

et al. 2017

Sci. China Mater.

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“…Using the same OEC system at neutral pH, Jin Hyun Kim et al [54] reported a shift in the onset potential after adding Co-Ci to a BiVO 4 /WO 3 photoelectrode, that is, from 0.5 V vs. RHE to 0.2 V vs. RHE. The Co-Ci/BiVO 4 /WO 3 material yielded a photocurrent density of 3.5 mA/cm 2 at 1.23 V vs. RHE, which was higher than the 2.5 mA/cm 2 produced at the same potential by the BiVO 4 /WO 3 without any OEC.…”

Section: Strategies Adopted To Enhance Reaction Kinetics In Solar Watmentioning

confidence: 99%

Recent Advances in the BiVO4 Photocatalyst for Sun-Driven Water Oxidation: Top-Performing Photoanodes and Scale-Up Challenges

2017

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Photoelectrochemical (PEC) water splitting, which is a type of artificial photosynthesis, is a sustainable way of converting solar energy into chemical energy. The water oxidation half-reaction has always represented the bottleneck of this process because of the thermodynamic and kinetic challenges that are involved. Several materials have been explored and studied to address the issues pertaining to solar water oxidation. Significant advances have recently been made in the use of stable and relatively cheap metal oxides, i.e., semiconducting photocatalysts. The use of BiVO 4 for this purpose can be considered advantageous because this catalyst is able to absorb a substantial portion of the solar spectrum and has favourable conduction and valence band edge positions. However, BiVO 4 is also associated with poor electron mobility and slow water oxidation kinetics and these are the problems that are currently being investigated in the ongoing research in this field. This review focuses on the most recent advances in the best-performing BiVO 4 -based photoanodes to date. It summarizes the critical parameters that contribute to the performance of these photoanodes, and highlights so far unresolved critical features related to the scale-up of a BiVO 4 -based PEC water-splitting device.

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“…With Cu as the cathode and cobalt carbonate (Co‐Ci) OEC modified BiVO 4 /WO 3 composite as the photoanode, better PEC performance for CO 2 reduction can be achieved ( Figure a) . Co‐Ci/BiVO 4 /WO 3 shows the best photocurrent density of 3.5 mA cm −2 at 1.23 V vs RHE, an onset potential of 0.2 V vs RHE under 1 sun illumination in CO 2 ‐saturated KHCO 3 (KCi, pH = 7) electrolyte and a recorded IPCE of ≈60% up to 450 nm (Figure b,c).…”

Section: Photoanode and Electrocathode Systemmentioning

confidence: 99%

Recent Progress on Photo‐Electrocatalytic Reduction of Carbon Dioxide

Wang

et al. 2018

Part & Part Syst Charact

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Ever‐increasing carbon dioxide emission has led to serious greenhouse effect and global warming in recent years. Photo‐electrocatalysis is the most significant approach to convert carbon dioxide into hydrocarbon fuels to alleviate the greenhouse effect as well as ensure the global carbon cycling with inexhaustible solar energy resource. There are four typical configurations in the photo‐electrocatalytic (PEC) carbon dioxide reduction system, i.e., photocathode coupling with anode cell, photoanode combining with cathode cell, photocathode integrating photoanode cell, and a photovoltaic‐photo‐electrocatalytic tandem cell. This review briefly summarizes the state‐of‐the‐art progress of above four configurations for photo‐electrocatalytic carbon dioxide reduction with a focus on the rational design of the electrode materials to achieve higher efficiency. In addition, the innovative design of the PEC system for efficient carbon dioxide reduction has also been concisely introduced. Finally, the perspectives on the challenges and future development of photo‐electrocatalytic carbon dioxide reduction based on the discussed configurations are presented.

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Carbonate-coordinated cobalt co-catalyzed BiVO4/WO3 composite photoanode tailored for CO2 reduction to fuels

Cited by 123 publications

References 39 publications

Promoting charge carrier utilization by integrating layered double hydroxide nanosheet arrays with porous BiVO4 photoanode for efficient photoelectrochemical water splitting

Promoting charge carrier utilization by integrating layered double hydroxide nanosheet arrays with porous BiVO4 photoanode for efficient photoelectrochemical water splitting

Recent Advances in the BiVO4 Photocatalyst for Sun-Driven Water Oxidation: Top-Performing Photoanodes and Scale-Up Challenges

Recent Progress on Photo‐Electrocatalytic Reduction of Carbon Dioxide

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