Boosting visible-light-driven hydrogen evolution from formic acid over AgPd/2D g-C3N4 nanosheets Mott-Schottky photocatalyst

Wan, Chao; Liu, Zhou; Sun, Lin; Xu, Lixin; Cheng, Dang-guo; Chen, Fengqiu; Zhan, Xiaoli; Yang, Yongrong

doi:10.1016/j.cej.2020.125229

Cited by 159 publications

(69 citation statements)

References 80 publications

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“…Clean and sustainable energy is attracting tremendous attention worldwide because of the continuous shortage of fossil fuels and the worsening of environmental pollution. Hydrogen, which occupies higher energy density (142 MJ/kg) [ 1 , 2 ] than traditional fossil fuels and produces only clean and nontoxic water during combustion, is regarded as one of the most promising renewable energy resources [ 3 , 4 ]. Unfortunately, the utilization of hydrogen economy still faces many technical difficulties, especially for hydrogen storage [ 5 , 6 , 7 ].…”

Section: Introductionmentioning

confidence: 99%

Realizing Hydrogen De/Absorption Under Low Temperature for MgH2 by Doping Mn-Based Catalysts

et al. 2020

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Magnesium hydride (MgH2) has been considered as a potential material for storing hydrogen, but its practical application is still hindered by the kinetic and thermodynamic obstacles. Herein, Mn-based catalysts (MnCl2 and Mn) are adopted and doped into MgH2 to improve its hydrogen storage performance. The onset dehydrogenation temperatures of MnCl2 and submicron-Mn-doped MgH2 are reduced to 225 °C and 183 °C, while the un-doped MgH2 starts to release hydrogen at 315 °C. Further study reveals that 10 wt% of Mn is the better doping amount and the MgH2 + 10 wt% submicron-Mn composite can quickly release 6.6 wt% hydrogen in 8 min at 300 °C. For hydrogenation, the completely dehydrogenated composite starts to absorb hydrogen even at room temperature and almost 3.0 wt% H2 can be rehydrogenated in 30 min under 3 MPa hydrogen at 100 °C. Additionally, the activation energy of hydrogenation reaction for the modified MgH2 composite significantly decreases to 17.3 ± 0.4 kJ/mol, which is much lower than that of the primitive MgH2. Furthermore, the submicron-Mn-doped sample presents favorable cycling stability in 20 cycles, providing a good reference for designing and constructing efficient solid-state hydrogen storage systems for future application.

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Section: Introductionmentioning

confidence: 99%

Realizing Hydrogen De/Absorption Under Low Temperature for MgH2 by Doping Mn-Based Catalysts

et al. 2020

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“…In the process of utilization, it is a key to storage and transportation [5,6]. Hydrogen storage methods can be roughly divided into physical methods [7,8] and chemical methods [9,10], which have made some progress in a certain extent. Based on the liquid organic hydride, hydrogen storage technology in chemical methods, owing to large hydrogen storage capacity, high energy density, and safe and convenient liquid storage and transportation [11][12][13], has attracted the attention of scholars.…”

Section: Introductionmentioning

confidence: 99%

Pt-Ni Nanoalloys for H2 Generation from Hydrous Hydrazine

Luo¹,

Wan

et al. 2020

Catalysts

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Hydrous hydrazine (N2H4∙H2O) is a candidate for a hydrogen carrier for storage and transportation due to low material cost, high hydrogen content of 8.0%, and liquid stability at room temperature. Pt and Pt nanoalloy catalysts have been welcomed by researchers for the dehydrogenation of hydrous hydrazine recently. Therefore, in this review, we give a summary of Pt nanoalloy catalysts for the dehydrogenation of hydrous hydrazine and briefly introduce the decomposition mechanism of hydrous hydrazine to prove the design principle of the catalyst. The chemical characteristics of hydrous hydrazine and the mechanism of dehydrogenation reaction are briefly introduced. The catalytic activity of hydrous hydrazine on different supports and the factors affecting the selectivity of hydrogen catalyzed by Ni-Pt are analyzed. It is expected to provide a new way for the development of high-activity catalysts for the dehydrogenation of hydrous hydrazine to produce hydrogen.

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“…As depicted in Figure 2a, the as-prepared catalysts hold a type-IV with H4 hysteresis loops in the relative pressure range of 0.40-1.00, which reveal that samples have orderly mesoporous structures, as evidence by previous literature. [47] Moreover, the BET specific surface area (S BET ) of Ni 0.5 Pt 0.5 /meso-TiO 2 is determined to be 104.2 m 2 ⋅ g À 1 , significantly lower than that meso-TiO 2 (104.2 m 2 ⋅ g À 1 ), indicating that a part of the pores of meso-TiO 2 are occupied by the highly dispersed NiPt NPs. According to N 2 sorption data, meso-TiO 2 possesses large specific surface areas and pore sizes (Figure 2b).…”

Section: Synthesis and Characterizationmentioning

confidence: 95%

Achieving Complete Hydrogen Evolution from N2H4BH3 over Mesoporous TiO2 Immobilized NiPt Alloy Nanoparticles

Liu

Wan

et al. 2021

ChemistrySelect

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Mesoporous materials, as the supports in the fabrication of catalyst, are beneficial for the dispersion of the metal active sites in the pores. Herein, highly dispersed NiÀ Pt alloy nanoparticles deposited on mesoporous TiO 2 was facilely and successfully fabricated via a one-step reduction method towards hydrogen generation from N 2 H 4 BH 3 . Unexpectedly, the optimized Ni 0.5 Pt 0.5 /meso-TiO 2 exhibits superior catalytic prop-erty and 100 % selectivity with a turnover frequency (TOF) value of 77.06 min À 1 in the existence of sodium hydroxide at 323 K. Meanwhile, the catalyst achieves high stability and reusability even after five recycles. This study provides one new way for preparation of mesoporous TiO 2 supported metal NPs for hydrogen generation reaction [a

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Boosting visible-light-driven hydrogen evolution from formic acid over AgPd/2D g-C3N4 nanosheets Mott-Schottky photocatalyst

Cited by 159 publications

References 80 publications

Realizing Hydrogen De/Absorption Under Low Temperature for MgH2 by Doping Mn-Based Catalysts

Realizing Hydrogen De/Absorption Under Low Temperature for MgH2 by Doping Mn-Based Catalysts

Pt-Ni Nanoalloys for H2 Generation from Hydrous Hydrazine

Achieving Complete Hydrogen Evolution from N2H4BH3 over Mesoporous TiO2 Immobilized NiPt Alloy Nanoparticles

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