Respective electrode potential characteristics of photocatalytic fuel cell with visible-light responsive photoanode and air-breathing cathode

Liu, Qiang; Li, Lin; Chen, Rong; Zhu, Xun; Wang, Hong; Ye, Dingding; Cheng, Xin; Zhang, Muxing; Zhou, Yuecheng

doi:10.1016/j.ijhydene.2015.10.002

Cited by 50 publications

(22 citation statements)

References 26 publications

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“…However, water oxidation is less efficient than the oxidation of organic sacrificial agents [7]. Therefore, photoelectrocatalytic hydrogen production has been achieved on several occasions by the oxidation of organic compounds [7][8][9][10][11][12], which may as well be wastes, thus offering an additional environmental benefit. In a typical procedure, a photoelectrochemical cell comprising a photoanode and a dark cathode is used [7].…”

Section: Introductionmentioning

confidence: 99%

Photoelectrocatalytic H2 and H2O2 Production Using Visible-Light-Absorbing Photoanodes

et al. 2019

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Hydrogen and hydrogen peroxide have been photoelectrocatalytically produced by electrocatalytic reduction using simple carbon electrodes made by depositing a mesoporous carbon film on carbon cloth. Visible-light-absorbing photoanodes have been constructed by depositing mesoporous CdS/TiO2 or WO3 films on transparent fluorine-doped tin oxide (FTO) electrodes. Both produced substantial photocurrents of up to 50 mA in the case of CdS/TiO2 and 25 mA in the case of WO3 photoanodes, and resulting in the production of substantial quantities of H2 gas or aqueous H2O2. Maximum hydrogen production rate was 7.8 µmol/min, and maximum hydrogen peroxide production rate was equivalent, i.e., 7.5 µmol/min. The same reactor was employed for the production of both solar fuels, with the difference being that hydrogen was produced under anaerobic and hydrogen peroxide under aerated conditions. The present data promote the photoelectrochemical production of solar fuels by using simple inexpensive materials for the synthesis of catalysts and the construction of electrodes.

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Section: Introductionmentioning

confidence: 99%

Photoelectrocatalytic H2 and H2O2 Production Using Visible-Light-Absorbing Photoanodes

et al. 2019

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“…TiO 2 /CdS photoanodes have mostly been used with sulfide electrolytes [ 11 , 12 , 13 ]. Nevertheless, the stability of CdS is guaranteed in the presence of an efficient hole scavenger, and this has been repeatedly shown in the presence of ethanol [ 14 , 15 , 16 , 17 ]. Any realistic approach for photoelectrocatalytic hydrogen production cannot be envisaged but with the employment of noble metal-free installations.…”

Section: Introductionmentioning

confidence: 99%

A Realistic Approach for Photoelectrochemical Hydrogen Production

et al. 2018

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The production of hydrogen by water splitting has been a very attractive idea for several decades. However, the energy consumption that is necessary for water oxidation is too high for practical applications. On the contrary, the oxidation of organics is a much easier and less energy-demanding process. In addition, it may be used to consume organic wastes with a double environmental benefit: renewable energy production with environmental remediation. The oxidation of organics in a photoelectrochemical cell, which in that case is also referenced as a photocatalytic fuel cell, has the additional advantage of providing an alternative route for solar energy conversion. With this in mind, the present work describes a realistic choice of materials for the Pt-free photoelectrochemical production of hydrogen, by employing ethanol as a model organic fuel. The photoanode was made of a combination of titania with cadmium sulfide as the photosensitizer in order to enhance visible light absorbance. The cathode electrode was a simple carbon paper. Thus, it is shown that substantial hydrogen can be produced without electrocatalysts by simply exploiting carbon electrodes. Even though an ion transfer membrane was used in order to allow for an oxygen-free cathode environment, the electrolyte was the same in both the anode and cathode compartments. An alkaline electrolyte has been used to allow high hydroxyl concentration, thus facilitating organic fuel (photocatalytic) oxidation. Hydrogen production was then obtained by water reduction at the cathode (counter) electrode.

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“…Figure 4b and Figure 4d showed the photo-response performance of the PFC photoanode catalyst exploited in our research under the illumination on/off cycles. [19] Once the illumination was applied to the PFC, the short circuit current immediately rised up from 0 to 1070 μA/cm 2 . The current was recovered to zero immediately as soon as the light was turned off.…”

Section: Using Methanol As Biomass Model To Optimize the Photocatalystmentioning

confidence: 99%

“…[15][16][17] The fuels are generally liquid or soluble in water, and require a high degree of concentration. [18,19] The biomass fuels in PFC combines photocatalytic technology on the basis of fuel cells to make full use of solar energy to oxidize biomass. When methanol, ethanol and glucose are used as fuels, the fuels are almost oxidized to CO 2 in a stoichiometric manner.…”

Section: Introductionmentioning

confidence: 99%

Visible‐Light‐Responsive TiO₂/NiFe Mixed Metal Oxide‐Carbon Photocatalytic Fuel Cell with Synchronous Hydrogen Peroxide Production

et al. 2021

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The photocatalytic fuel cell (PFC) synergistically utilizes the photocatalytic oxidation of biomass and the electrochemical reaction of the fuel cell to selectively reduce oxygen to produce hydrogen peroxide (H 2 O 2 ) at room temperature. Herein, we report a PEC system that NiFe-layered double oxide (LDO)/TiO 2 as photoanode, carbon black as cathode for utilizing biomass and oxygen to simultaneously convert solar energy into electricity and produce hydrogen peroxide without applied electric bias. The photoanode catalyst was fabricated with TiO 2supported NiFe mixed metal oxides (MMO) which obtained by layered double hydroxides (LDHs) pyrolysis. The research results indicate that under solar irradiation, the photocurrent density and faraday efficiency have a significantly improved compared with pure NiO/TiO 2 . With methanol as the feeding fuel at the photoanode, the optimal device yields an excellent open circuit voltage (V oc ), short circuit current (J sc ) and a maximum power density (P max ) of 0.78 V, 1093 μA/cm 2 and 169 μW/cm 2 , respectively. This performance improvement is attributed to the Fe 3 + doped in NiFe-MMO and use TiO 2 as an electron transport layer. Simultaneously, the hydrogen peroxide concentration reached 0.443 mM after 180 min illumination at the cathode, the generation rate was optimized to 0.126 μmol/min/cm 2 at neutral aqueous solution. The PEC system exhibited an excellent higher rate of production for H 2 O 2 , and faraday efficiency (FE) reached 31.7 %. This PFC is a green technology for photocatalytically oxidize biomass at the photoanode and convert solar energy into electricity as well as supply it to the cathode to reduce O 2 to produce H 2 O 2 efficiently.

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Respective electrode potential characteristics of photocatalytic fuel cell with visible-light responsive photoanode and air-breathing cathode

Cited by 50 publications

References 26 publications

Photoelectrocatalytic H2 and H2O2 Production Using Visible-Light-Absorbing Photoanodes

Photoelectrocatalytic H2 and H2O2 Production Using Visible-Light-Absorbing Photoanodes

A Realistic Approach for Photoelectrochemical Hydrogen Production

Visible‐Light‐Responsive TiO₂/NiFe Mixed Metal Oxide‐Carbon Photocatalytic Fuel Cell with Synchronous Hydrogen Peroxide Production

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Respective electrode potential characteristics of photocatalytic fuel cell with visible-light responsive photoanode and air-breathing cathode

Cited by 50 publications

References 26 publications

Photoelectrocatalytic H2 and H2O2 Production Using Visible-Light-Absorbing Photoanodes

Photoelectrocatalytic H2 and H2O2 Production Using Visible-Light-Absorbing Photoanodes

A Realistic Approach for Photoelectrochemical Hydrogen Production

Visible‐Light‐Responsive TiO2/NiFe Mixed Metal Oxide‐Carbon Photocatalytic Fuel Cell with Synchronous Hydrogen Peroxide Production

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Visible‐Light‐Responsive TiO₂/NiFe Mixed Metal Oxide‐Carbon Photocatalytic Fuel Cell with Synchronous Hydrogen Peroxide Production