Improved photocatalytic H2 production assisted by aqueous glucose biomass by oxidized g-C3N4

Speltini, Andrea; Scalabrini, Andrea; Maraschi, Federica; Sturini, Michela; Pisanu, Ambra; Malavasi, Lorenzo; Profumo, Antonella

doi:10.1016/j.ijhydene.2018.06.103

Cited by 65 publications

(34 citation statements)

References 42 publications

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“…And found that the photocatalytic activity of SNGODs in reforming of sugar and glucose were both improved significantly [95]. Speltini et al treated g-C 3 N 4 in hot HNO 3 aqueous solution to obtain oxidized g-C 3 N 4 (O-g-C 3 N 4 ) [93]. After treatment, the production rate of H 2 in photocatalytic reforming of glucose was about 26 times higher than pure g-C 3 N 4 .…”

Section: Graphene Analog Photocatalystmentioning

confidence: 99%

Photocatalytic Reforming for Hydrogen Evolution: A Review

Yao

Gao

et al. 2020

Catalysts

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Hydrogen is considered to be an ideal energy carrier to achieve low-carbon economy and sustainable energy supply. Production of hydrogen by catalytic reforming of organic compounds is one of the most important commercial processes. With the rapid development of photocatalysis in recent years, the applications of photocatalysis have been extended to the area of reforming hydrogen evolution. This research area has attracted extensive attention and exhibited potential for wide application in practice. Photocatalytic reforming for hydrogen evolution is a sustainable process to convert the solar energy stored in hydrogen into chemical energy. This review comprehensively summarized the reported works in relevant areas, categorized by the reforming precursor (organic compound) such as methanol, ethanol and biomass. Mechanisms and characteristics for each category were deeply discussed. In addition, recommendations for future work were suggested.

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Section: Graphene Analog Photocatalystmentioning

confidence: 99%

Photocatalytic Reforming for Hydrogen Evolution: A Review

Yao

Gao

et al. 2020

Catalysts

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“…Later, renewable biomass derived compounds were investigated, such as ethanol and glycerol [1,3,10,[12][13][14], or, more recently, glucose and other mono-or oligo-saccharides [15][16][17][18][19][20][21][22][23][24][25][26]. Few examples of direct photoreforming of cellulose or raw biomass have been also attempted, but with much lower hydrogen productivity with respect to simpler molecules [27][28][29].…”

Section: -Introductionmentioning

confidence: 99%

Design of efficient photocatalytic processes for the production of hydrogen from biomass derived substrates

Ramis

Bahadori

Rossetti

2021

International Journal of Hydrogen Energy

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The photoreforming of glucose has been studied over TiO2 photocatalyst with different photoreactors, focusing on the effect of the reaction conditions: temperature, pressure, catalyst and substrate concentration. The effect of pressure was particularly significant, decreasing hydrogen evolution rate, but improving the conversion of the substrate. Furthermore, pressure moderately higher than ambient allowed to operate at high temperature (80°C), boosting hydrogen productivity. Most experiments were carried out on glucose photoreforming, but, for the first time, the photoconversion of levulinic acid was investigated, as an interesting product of biomass hydrolysis under harsh conditions.

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“…Based on the preliminary findings obtained with carbon nitride-perovskite composites in TEOA solution [12,13], the two best performing materials, 33% DMASnBr 3 /g-C 3 N 4 and 5% PEA 2 SnBr 4 /g-C 3 N 4 , are investigated here for a systematic study of H 2 photoproduction from glucose aqueous solution. Glucose was selected as a biomass-derived sacrificial agent because in the wastewaters from food industry sugars are present at considerable amounts [4,5], and Pt was used as the reference metal co-catalyst because of its excellent properties for water reduction due to the large work function, resulting in a strong Schottky barrier effect [15,16].…”

Section: Resultsmentioning

confidence: 99%

“…For instance, metal and non-metal doping, structural and morphological modifications, dye-sensitization, and combination with co-catalysts of different nature (e.g., carbon nanotubes, carbon dots, bimetallic deposition) have proved to be rewarding in terms of enhanced photocatalytic activity towards H 2 generation from water also in the presence of sacrificial agents [2,3]. Among these, mainly fine chemicals have been used, as recently reviewed by Nasir et al [2], while just a few studies were undertaken in aqueous biomass solutions or directly in wastewaters [4][5][6].…”

Section: Introductionmentioning

confidence: 99%

Carbon Nitride-Perovskite Composites: Evaluation and Optimization of Photocatalytic Hydrogen Evolution in Saccharides Aqueous Solution

et al. 2020

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The application of hybrid photocatalysts made of carbon nitride and lead-free perovskites, namely DMASnBr3/g-C3N4 and PEA2SnBr4/g-C3N4, for the H2 evolution from saccharides aqueous solution is described. The novel composites were tested and compared in terms of hydrogen evolution rate (HER) under simulated solar light, using Pt as a reference co-catalyst, and glucose as a representative sacrificial biomass. The conditions were optimized to maximize H2 generation by a design of experiments involving catalyst amount, glucose concentration and Pt loading. For both materials, such parameters affected significantly H2 photogeneration, with the best performance observed using 0.5 g L−1 catalyst, 0.2 M glucose and 0.5 wt% Pt. Under optimized conditions, DMASnBr3/g-C3N4 showed a 5-fold higher HER compared to PEA2SnBr4/g-C3N4, i.e., 925 µmoles g−1 h−1 and 190 µmoles g−1 h−1, respectively (RSD ≤ 11%, n = 4). The former composite, which affords an HER 15-fold higher in aqueous glucose than in neat water, provided H2 also with no metal co-catalyst (around 140 µmoles g−1 h−1), and it was reusable for at least three photoreactions. Encouraging results were also collected by explorative tests on raw starch solution (around 150 µmoles g−1 h−1).

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Improved photocatalytic H2 production assisted by aqueous glucose biomass by oxidized g-C3N4

Cited by 65 publications

References 42 publications

Photocatalytic Reforming for Hydrogen Evolution: A Review

Photocatalytic Reforming for Hydrogen Evolution: A Review

Design of efficient photocatalytic processes for the production of hydrogen from biomass derived substrates

Carbon Nitride-Perovskite Composites: Evaluation and Optimization of Photocatalytic Hydrogen Evolution in Saccharides Aqueous Solution

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