Peculiar synergetic effect of MoS 2 quantum dots and graphene on Metal-Organic Frameworks for photocatalytic hydrogen evolution

Hao, Xuqiang; Jin, Zhiliang; Yang, Hao; Lü, Gongxuan; Bi, Yingpu

doi:10.1016/j.apcatb.2017.03.057

Cited by 302 publications

(94 citation statements)

References 34 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The different morphologies of MoS 2 materials, such as quantum dots, nanosheets, nanoparticles and monolayer or few layers, have been designed and prepared by the previous report . Among them, MoS 2 quantum dots display much more unsaturated bonds on surface and edge of MoS 2 owing to its morphology and structure, so it can supply more active sites to improve photocatalytic hydrogen evolution performance . Gao et al reported that MoS 2 /Graphene/TiO 2 photocatalyst showed the improved photocatalytic performance due to the introduction of Graphene and MoS 2 QDs, which can provide much more active sites on surface of TiO 2 .…”

Section: Methodsmentioning

confidence: 99%

Facile synthesis of MoS ₂ QDs/TiO ₂ nanosheets via a self‐assembly strategy for enhanced photocatalytic hydrogen production

Zhuang

Chen

et al. 2020

Int J Energy Res

View full text Add to dashboard Cite

Summary The MoS2 quantum dots (QDs) were interspersed on anatase TiO2 nanosheets with exposed (001) facets by a facile self‐assembly strategy. As expected, the MoS2 QDs/TiO2 nanosheets display an excellent photocatalytic performance for hydrogen production, and its hydrogen evolution rate is 139 μmol/h/g. More importantly, the hydrogen evolution rate of MoS2 QDs/TiO2 nanosheets is almost 4‐fold in comparison to that of nude TiO2 nanosheets. Based on the detailed characterizations, it can be obtained that the improved photocatalytic activity for hydrogen production can be ascribed to the particular characteristics of MoS2 QDs, which can intensify the photo‐absorption efficiency of TiO2 nanosheets and enhance the separation and transfer efficiency of photo‐excited charge carriers. It is anticipated that this work provides a novel paradigm to fabricate the highly‐efficient photocatalysts for hydrogen evolution.

show abstract

Section: Methodsmentioning

confidence: 99%

Facile synthesis of MoS ₂ QDs/TiO ₂ nanosheets via a self‐assembly strategy for enhanced photocatalytic hydrogen production

Zhuang

Chen

et al. 2020

Int J Energy Res

View full text Add to dashboard Cite

show abstract

“…In the case of MOF derivatives, the reduced porosity results from the collapse of crystalline porous structure, which is caused by the breaking of coordination bonds and the removal of noncarbon elements at high temperatures. [55] Zhen et al developed Ni nanoparticles (9.7 wt%) loaded MOF-5 for the same application. In this case, the decrement in porosity is usually determined by the sizes and dispersity of guest particles.…”

Section: Ultrahigh Porosities For Accessible Active Sitesmentioning

confidence: 99%

“…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

405

199

View full text Add to dashboard Cite

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...

show abstract

“…The photocatalytic reaction is a mild process, which has been extensively studied for contaminant remediation, hydrogen production, carbon dioxide reduction, and fine chemical synthesis . However, because of the combination of hole‐electrons, the efficiency of hydrogen production from pure water splitting is low .…”

Section: Resultsmentioning

confidence: 99%

Enhance photocatalytic hydrogen evolution by using alkaline pretreated corn stover as a sacrificial agent

Zhou

Lin

2020

Int J Energy Res

View full text Add to dashboard Cite

Summary In this study, alkali pretreated corn stover was added as a sacrificial agent to the suspension of Pt/TiO2 to significantly enhanced photocatalytic hydrogen evolution. The changes in structural characteristics of corn stover before and after alkali treatment and photocatalytic reactions were studied. According to the results, the removal of lignin and hemicellulose, as well as the changes in surface morphology, structural components, and functional groups of alkali pretreated corn stover may affect the photocatalytic hydrogen production process. Next, the effects of NaOH concentration, pretreatment time and temperature on hydrogen production were also investigated. Among them, within the scope of the experimental conditions, the optimal hydrogen production is 25.84 μmol h−1. Moreover, the enhancement of photocatalytic hydrogen production is also achieved by using the waste liquid of alkali pretreated. The output of this study may provide a reference for the reuse of alkali‐treated biomass residues and waste liquor in some industries, and make more comprehensive, efficient and green use of native lignocellulosic biomass.

show abstract

Peculiar synergetic effect of MoS 2 quantum dots and graphene on Metal-Organic Frameworks for photocatalytic hydrogen evolution

Cited by 302 publications

References 34 publications

Facile synthesis of MoS ₂ QDs/TiO ₂ nanosheets via a self‐assembly strategy for enhanced photocatalytic hydrogen production

Facile synthesis of MoS ₂ QDs/TiO ₂ nanosheets via a self‐assembly strategy for enhanced photocatalytic hydrogen production

Metal–Organic Framework Based Catalysts for Hydrogen Evolution

Enhance photocatalytic hydrogen evolution by using alkaline pretreated corn stover as a sacrificial agent

Contact Info

Product

Resources

About

Peculiar synergetic effect of MoS 2 quantum dots and graphene on Metal-Organic Frameworks for photocatalytic hydrogen evolution

Cited by 302 publications

References 34 publications

Facile synthesis of MoS 2 QDs/TiO 2 nanosheets via a self‐assembly strategy for enhanced photocatalytic hydrogen production

Facile synthesis of MoS 2 QDs/TiO 2 nanosheets via a self‐assembly strategy for enhanced photocatalytic hydrogen production

Metal–Organic Framework Based Catalysts for Hydrogen Evolution

Enhance photocatalytic hydrogen evolution by using alkaline pretreated corn stover as a sacrificial agent

Contact Info

Product

Resources

About

Facile synthesis of MoS ₂ QDs/TiO ₂ nanosheets via a self‐assembly strategy for enhanced photocatalytic hydrogen production

Facile synthesis of MoS ₂ QDs/TiO ₂ nanosheets via a self‐assembly strategy for enhanced photocatalytic hydrogen production