k-fractional integral trapezium-like inequalities through ( h , m ) $(h,m)$ -convex and ( α , m ) $(\alpha,m)$ -convex mappings

Wang, Hao; Du, Tingsong; Yao, Zhenjiang

doi:10.1186/s13660-017-1586-6

Cited by 80 publications

(84 citation statements)

References 22 publications

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“…The solvents involved in organosolv pretreatment and nonenzymatic processes were also used as solvents for the depolymerization and upgrading of isolated or native lignin. [4,[192][193][194] Xu et al recently reviewed lignin conversion strategies [195] and showedt hat many studies give rise to high-yield conversion of lignin model compounds into lignin monomers in the aqueous phase using acid/alkali hydrolysis and hydrogenolysis. However,t he authorsa lso showt hat these strategies did not perform well in the depolymerization of real lignin.…”

Section: Solvent Effects On Lignin Solubilitymentioning

confidence: 99%

“…[127] Am ajor reasonf or this difference is that both native lignin and the catalysta re in the solidp hase,w hich limits the mass transfer between the lignin reactanta nd the active sites of the heterogeneous catalyst. [194] Therefore, the use of ah omogeneous liquid solution of lignin [4,[192][193][194] and/or ah omogeneous catalyst [195,196] was shown to further favor lignin depolymerization. Organosolv lignins, which can be dissolved by solvents such as acetone, ethanol, methanol,a nd THF,a re relatively attractive substrates for upgrading.…”

Section: Solvent Effects On Lignin Solubilitymentioning

confidence: 99%

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Organic Solvent Effects in Biomass Conversion Reactions

2015

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Transforming lignocellulosic biomass into fuels and chemicals has been intensely studied in recent years. A large amount of work has been dedicated to finding suitable solvent systems, which can improve the transformation of biomass into value‐added chemicals. These efforts have been undertaken based on numerous research results that have shown that organic solvents can improve both conversion and selectivity of biomass to platform molecules. We present an overview of these organic solvent effects, which are harnessed in biomass conversion processes, including conversion of biomass to sugars, conversion of sugars to furanic compounds, and production of lignin monomers. A special emphasis is placed on comparing the solvent effects on conversion and product selectivity in water with those in organic solvents while discussing the origins of the differences that arise. We have categorized results as benefiting from two major types of effects: solvent effects on solubility of biomass components including cellulose and lignin and solvent effects on chemical thermodynamics including those affecting reactants, intermediates, products, and/or catalysts. Finally, the challenges of using organic solvents in industrial processes are discussed from the perspective of solvent cost, solvent stability, and solvent safety. We suggest that a holistic view of solvent effects, the mechanistic elucidation of these effects, and the careful consideration of the challenges associated with solvent use could assist researchers in choosing and designing improved solvent systems for targeted biomass conversion processes.

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Section: Solvent Effects On Lignin Solubilitymentioning

confidence: 99%

Section: Solvent Effects On Lignin Solubilitymentioning

confidence: 99%

Organic Solvent Effects in Biomass Conversion Reactions

2015

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“…[6]. The height of GaN columns increases with increased silane flow, because a high silane flow changes growth processes on the surface and it passivates the sidewalls of GaN columns with a Si-rich layer [6,7]. Several groups report on the effects of surface passivation on the performance of GaN devices [8][9][10].…”

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confidence: 99%

Surface photovoltage behavior of GaN columns

Deeb

Wei

Hartmann

et al. 2015

Physica Status Solidi (a)

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GaN columns are grown by metal organic vapor phase epitaxy (MOVPE) with a high silane flow, which often leads to rough sidewalls and related problems during a subsequent shell overgrowth by e.g., InGaN/GaN quantum wells. In order to get more information on the surface of GaN columns before overgrowth, surface photovoltage (SPV) measurements have been performed by photo‐assisted Kelvin probe force microscopy (KPFM) before and after chemical etching of the surface. Its electronic properties are demonstrated to be influenced by the silane injection during the samples' growth. Distinct differences are shown in the SPV behavior of GaN columns before and after etching with phosphoric acid. SPV decreases before etching, whereas after etching it increases like that on GaN bulk material. Silicon related surface states introduced during the growth are considered as the origin of the SPV behavior of the as grown samples. The change of this behavior after etching is attributed to the removal of the Si containing surface coating. Our investigations not only show the important role of silane injection during the growth on the SPV behavior of GaN columns, but it also reveals that the photo‐assisted KPFM technique is an easy and quick method to analyze surfaces.

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“…As the flagship, titanium dioxide (TiO 2 ) semiconductors show many prominent advantages including low cost, high thermal/ chemical stability, and strong oxidizing ability. [1][2][3] These features favor the applications of TiO 2 nanomaterials as an excellent photocatalyst for degradation of organic pollutants, especially in wastewater treatment. [4] Unfortunately, the relatively poor charge transport ability and wide bandgap (~3.2 eV) of TiO 2 go against the light absorption and accelerate the recombination between electrons and hole pairs, leading to the low catalytic activities.…”

Section: Introductionmentioning

confidence: 99%

Interfacial Assembly of Robust TiO₂ Nanosheets Onto Silica‐Modified Reduced Graphene Oxide for Highly Efficient Degradation of Organic Dyes

Wang

et al. 2018

ChemNanoMat

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The assembly of two‐dimensional (2D) transition‐metal oxides and reduced graphene oxide (RGO) has shown great potential in photocatalysis, energy storage, and photoelectric devices. In the work, we present a 3‐aminopropyltriethoxysilane (APTES)‐induced interfacial assembly route for preparation of a new type of 2D TiO2@RGO hybrid nanostructure. Benefiting from the electrostatic interaction between APTES and RGO, followed by the hydrolysis of APTES, an ultrathin SiO2 layer is first well grown into the surface of RGO. Subsequently, ultrathin TiO2 nanosheets (about 4 nm in thickness) are uniformly decorated onto the surface of silica‐modified RGO. These robust TiO2 nanosheets interconnect each other and form a unique net‐like architecture. Significantly, the TiO2@RGO products show superior structural stability. Consequently, the TiO2@RGO product annealed at 750 °C demonstrates an excellent photocatalytic activity and a good cycling life for degradation of organic dyes such as methyl orange (MO), rhodamine B (RhB) and methyl blue (MB) owing to the unique construction and enhanced synergistic effect.

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k-fractional integral trapezium-like inequalities through ( h , m ) $(h,m)$ -convex and ( α , m ) $(\alpha,m)$ -convex mappings

Cited by 80 publications

References 22 publications

Organic Solvent Effects in Biomass Conversion Reactions

Organic Solvent Effects in Biomass Conversion Reactions

Surface photovoltage behavior of GaN columns

Interfacial Assembly of Robust TiO₂ Nanosheets Onto Silica‐Modified Reduced Graphene Oxide for Highly Efficient Degradation of Organic Dyes

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k-fractional integral trapezium-like inequalities through ( h , m ) $(h,m)$ -convex and ( α , m ) $(\alpha,m)$ -convex mappings

Cited by 80 publications

References 22 publications

Organic Solvent Effects in Biomass Conversion Reactions

Organic Solvent Effects in Biomass Conversion Reactions

Surface photovoltage behavior of GaN columns

Interfacial Assembly of Robust TiO2 Nanosheets Onto Silica‐Modified Reduced Graphene Oxide for Highly Efficient Degradation of Organic Dyes

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Product

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Interfacial Assembly of Robust TiO₂ Nanosheets Onto Silica‐Modified Reduced Graphene Oxide for Highly Efficient Degradation of Organic Dyes