Self-assembly of polyoxometalates, Pt nanoparticles and metal–organic frameworks into a hybrid material for synergistic hydrogen evolution

Guo, Weiwei; Lv, Hongjin; Chen, Zheyuan; Sullivan, Kevin P.; Lauinger, Sarah M.; Chi, Yingnan; Sumliner, Jordan M.; Lian, Tianquan; Hill, Craig L.

doi:10.1039/c6ta00011h

Cited by 92 publications

(51 citation statements)

References 80 publications

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“…Besides other UiO-66/UiO-66-NH 2 [55,[145][146][147][148][149][150] and MIL-101/ MIL-101-NH 2 [151,152] associated work, the photocatalytic performances of MOF-supported catalysts, including UiO-type MOFs, [153][154][155] MOF-5, [56] MIL-125-NH 2 , [156,157] MIL-53-NH 2 , [158] Zr-porphyrin-based MOF (ZrPF), [159] and NU-1000 [160] are also summarized in Table 3. Besides other UiO-66/UiO-66-NH 2 [55,[145][146][147][148][149][150] and MIL-101/ MIL-101-NH 2 [151,152] associated work, the photocatalytic performances of MOF-supported catalysts, including UiO-type MOFs, [153][154][155] MOF-5, [56] MIL-125-NH 2 , [156,157] MIL-53-NH 2 , [158] Zr-porphyrin-based MOF (ZrPF), [159] and NU-1000 [160] are also summarized in Table 3.…”

Section: Mofs As Supportsmentioning

confidence: 99%

Metal–Organic Framework Based Catalysts for Hydrogen Evolution

Zhu

Zou

2018

Advanced Energy Materials

385

199

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society is still heavily relying on chemical fuels. Therefore, the essential and realistic approaches to environmental and energy issues remain to be the exploration of clean and sustainable energy sources, in order to meet the ever-increasing energy demand. Thanks to its high energy density and environmental friendliness, hydrogen fuel comes into play as a muchanticipated new energy carrier, which is under intensive studies in the academic field. [4] Furthermore, we are already in the new era witnessing the transformation of hydrogen-powered technologies from science fictions to realities. UK is already in the process of replacing their traditional diesel-powered double decker buses with the hydrogen-powered version, which aims to phase out the former by 2018. [5] China announced its world's first hydrogen-powered tram, which was put into business service in the latter half of 2017. [6] Mercedes-Benz had even started its development of personal hydrogen-powered car, and Toyota had commercialized its hydrogen fuel-cell car branded "Mirai." [7,8] However, one critical issue remains to be the conflict between the hydrogen production efficiency and the demand for the mass distribution of hydrogen-powered technologies.Current industrial hydrogen production methods include coal gasification (followed by water-gas shift reaction), steam reforming, cryogenic distillation, and water splitting. [9] Coal gasification and steam reforming utilize the reaction between conventional fossil fuels and water to produce syngas (primarily CO and H 2 ) or CO 2 and H 2 mixture. However, both reactions require high temperatures (can be over 1000 °C) and pressures, which is an energy intensive process and has strict requirements on infrastructures. [10] The reaction products also need to be further separated to obtain relatively high-concentration of hydrogen. Cryogenic distillation takes the advantage of difference in gas boiling points, which can be applied to separate hydrogen from other gas components in the former two hydrogen production methods. However, cryogenic distillation is also an energy intensive process for low-temperature gas liquification. In comparison, hydrogen evolution reaction (HER) through water splitting is much-favored because of the following three prominent advantages: 1) Water splitting can be carried out at room temperature and ambient pressure, which is less restricted by infrastructure requirements. 2) Oxygen and hydrogen can be produced separately or selectively, which eliminate the need for gas separation. 3) Both the hydrogen source Highly efficient hydrogen evolution reactions (HERs) will determine the mass distributions of hydrogen-powered clean technologies in the future. Metal-organic frameworks (MOFs) are emerging as a class of crystalline porous materials. Along with their derivatives, MOFs have recently been under intense study for their applications in various hydrogen production techniques. MOF-based materials possess unique advantages, such as high specific surface area, crystalline porous str...

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Section: Mofs As Supportsmentioning

confidence: 99%

Metal–Organic Framework Based Catalysts for Hydrogen Evolution

Zhu

Zou

2018

Advanced Energy Materials

385

199

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“…[9][10][11] So far, Pt-based and Ru/Ir-based catalysts have been extensively considered as the most active electrocatalysts for the HER and OER respectively in alkaline media, however, their high costs and source scarcity have limited large-scale production applications. 3,7,[12][13][14] Therefore, searching for cheap, earthabundant and efficient electrocatalysts with high HER and OER activities is still highly desirable.…”

Section: Introductionmentioning

confidence: 99%

Co₉S₈@N,P-doped porous carbon electrocatalyst using biomass-derived carbon nanodots as a precursor for overall water splitting in alkaline media

Liu

Zhang

et al. 2017

RSC Adv.

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In this study, we first synthesized Co 9 S 8 @N-doped porous carbon (Co 9 S 8 @NC) using shrimp-shell derived carbon nanodots as a carbon/nitrogen source in the presence of CoSO 4 by a one-step molten-salt calcination method. This was followed by low-temperature phosphorization in the presence of NaH 2 PO 2 , whereby Co 9 S 8 @N,P-doped porous carbon (Co 9 S 8 @NPC) was finally obtained using the Co 9 S 8 @NC as a precursor. The results demonstrated that the molten-salt calcination approach can effectively create a pyrolytic product with a porous structure and improve the material's surface area, which is favourable for electrocatalysis-related mass transport and the exposure of catalytic active sites during electrocatalysis. As an electrocatalyst, Co 9 S 8 @NPC exhibits higher catalytic activity for the hydrogen evolution reaction (HER) than Co 9 S 8 @NC in an alkaline medium. Among all the investigated Co 9 S 8 @NPC catalysts, Co 9 S 8 @NPC-10 (mass ratio of NaH 2 PO 2 to Co 9 S 8 @NC ¼ 10 : 1) displays the best HER activity with an overpotential of 261 mV at 10 mA cm À2 in the alkaline medium. Interestingly, Co 9 S 8 @NPC-10 also displays good catalytic activity for the oxygen evolution reaction (OER) in this study.Owing to its bifunctional catalytic activity towards the HER and OER, the fabricated Co 9 S 8 @NPC-10 was simultaneously used as an anode and cathode material to generate O 2 and H 2 from overall water splitting in the alkaline medium, exhibiting a nearly 100% faradaic yield. This study would be helpful to the design and development of high performance non-precious metal electrocatalysts to be applied in overall water splitting to produce H 2 and O 2 . IntroductionElectrocatalytic water splitting has been widely regarded as a potential renewable and sustainable energy technology to generate H 2 for replacing traditional fossil fuels, and H 2 has a high energy density and an environmentally-friendly combustion product. 1-3 To drive electrocatalytic water splitting to generate H 2 , an active electrocatalyst for the hydrogen evolution reaction (HER) is critically important, which would reduce the overpotential for the HER, thereby making the whole water splitting process more energy efficient. To date, the most efficient HER electrocatalysts are almost exclusively applied in acidic media owing to the rapid reaction rate of H + to H 2 on the catalyst surface, 4-8 however, studies on HER catalysts in alkaline media are relatively rare due to the more complex reaction mechanism of OH À on the catalyst surface and the sluggish kinetics of the counterpart electrode reaction for the oxygen evolution reaction (OER) during electrocatalytic water splitting. 9-11 So far, Pt-based and Ru/Ir-based catalysts have been extensively considered as the most active electrocatalysts for the HER and OER respectively in alkaline media, however, their high costs and source scarcity have limited large-scale production applications.3,7,12-14 Therefore, searching for cheap, earthabundant and efficient electrocatalysts with hi...

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“…Recently, there have been attempts to apply metal organic frameworks (MOFs) as catalysts for the electrochemical conversion of CO 2 [25][26][27][28] and H 2 production [29,30]. MOFs are made of metal ions coordinated to organic ligands, giving rise to characteristic three-dimensionally ordered crystalline structures.…”

Section: Introductionmentioning

confidence: 99%

Facile Synthesis of M-MOF-74 (M=Co, Ni, Zn) and its Application as an ElectroCatalyst for Electrochemical CO₂ Conversion and H₂ Production

Choi

Jung

Yoo

et al. 2017

Journal of Electrochemical Science and Technology

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Electrochemical conversion of CO 2 and production of H 2 were attempted on a three-dimensionally ordered, porous metal organic framework (MOF-74) in which transition metals (Co, Ni, and Zn) were impregnated. A lab-scale proton exchange membrane-based electrolyzer was fabricated and used for the reduction of CO 2 . Real-time gas chromatography enabled the instantaneous measurement of the amount of carbon monoxide and hydrogen produced. Comprehensive calculations, based on electrochemical measurements and gaseous product analysis, presented a time-dependent selectivity of the produced gases. M-MOF-74 samples with different central metals were successfully obtained because of the simple synthetic process. It was revealed that Co-and Ni-MOF-74 selectively produce hydrogen gas, while Zn-MOF-74 successfully generates a mixture of carbon monoxide and hydrogen. The results indicated that M-MOF-74 can be used as an electrocatalyst to selectively convert CO 2 into useful chemicals.

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Self-assembly of polyoxometalates, Pt nanoparticles and metal–organic frameworks into a hybrid material for synergistic hydrogen evolution

Abstract: A POM can perform four functions simultaneously, a theme of potential value in the construction of energy converting multicomponent assemblies.

Cited by 92 publications

References 80 publications

Metal–Organic Framework Based Catalysts for Hydrogen Evolution

Metal–Organic Framework Based Catalysts for Hydrogen Evolution

Co₉S₈@N,P-doped porous carbon electrocatalyst using biomass-derived carbon nanodots as a precursor for overall water splitting in alkaline media

Facile Synthesis of M-MOF-74 (M=Co, Ni, Zn) and its Application as an ElectroCatalyst for Electrochemical CO₂ Conversion and H₂ Production

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Self-assembly of polyoxometalates, Pt nanoparticles and metal–organic frameworks into a hybrid material for synergistic hydrogen evolution

Abstract: A POM can perform four functions simultaneously, a theme of potential value in the construction of energy converting multicomponent assemblies.

Cited by 92 publications

References 80 publications

Metal–Organic Framework Based Catalysts for Hydrogen Evolution

Metal–Organic Framework Based Catalysts for Hydrogen Evolution

Co9S8@N,P-doped porous carbon electrocatalyst using biomass-derived carbon nanodots as a precursor for overall water splitting in alkaline media

Facile Synthesis of M-MOF-74 (M=Co, Ni, Zn) and its Application as an ElectroCatalyst for Electrochemical CO2 Conversion and H2 Production

Contact Info

Product

Resources

About

Co₉S₈@N,P-doped porous carbon electrocatalyst using biomass-derived carbon nanodots as a precursor for overall water splitting in alkaline media

Facile Synthesis of M-MOF-74 (M=Co, Ni, Zn) and its Application as an ElectroCatalyst for Electrochemical CO₂ Conversion and H₂ Production