Abstract Hemicellulose, the second, most common polysaccharide in nature constitutes approximately 20—35% of lignocellulosic biomass. Effective utilization biomass, hitherto underutilized, is gaining tremendous importance for production energy, fuels, and chemicals. Amongst vast array chemicals derived from lignocellulosics, furfural key chemical that finds wide applications oil refining, plastics, pharmaceutical agrochemical industries. There no synthetic route furfural. A few conventional...

The successful development of a photocatalyst/biocatalyst integrated system that carries out selective methanol production from CO2 is reported herein. fine-tuned was derived judicious combination graphene-based visible light active photocatalyst (CCG-IP) and sequentially coupled enzymes. covalent attachment isatin-porphyrin (IP) chromophore to chemically converted graphene (CCG) afforded newly developed CCG-IP for this research endeavor. current work represents new benchmark carrying highly...

The successful development of a triazine based covalent organic framework as an inexpensive and highly efficient visible light active flexible film photocatalyst for solar fuel production from CO₂is described.

The utilization of CO2 for production solar fuels/chemicals is gaining increasing importance due to worldwide fossil-fuel shortage and global warming. As a means achieve this, we herein report on the synthesis development graphene-based visible light active photocatalyst (CCG–BODIPY) which chemically converted graphene (CCG) covalently bonded harvesting BODIPY molecule...

Solar light-driven fuel production from carbon dioxide using organic photocatalysts is a promising technique for sustainable energy sources. Band gap engineering in improving efficiency and fulfilling the requirements highly anticipated. Here, we present new strategy to engineer band covalent framework (COF) by varying push–pull electronic effect. To implement this strategy, have designed synthesized four different COFs tripodal amine...

Easy fabrication of multi-functional, free standing, centimeter sized, thin film photocatalyst for sustainable solar fine chemical synthesis and photoreduction CO₂ to formic acid under visible light.

Novel in situ Se-doped carbon nitride (C3N4) nanosheets are synthesized for the first time by a facile one-pot two-step strategy. The as-prepared C3N4 show high visible light driven formic acid production rate of 1.001 × 105 μmol gcat–1 h–1. It represents highest value reported literature from CO2 harvesting photocatalysts. exceptional photocatalytic activity is largely attributed to selenium-doped conjugated system besides porous nanosheet morphology photocatalyst. presence midgap state...

The judicious utilization of solar light for the asymmetric synthesis optically active compounds by imitating natural photosynthesis introduces a new concept that harnesses this renewable energy in vitro ultimate transformation into chiral chemical bonds. Herein, we present comprehensive description such biomimetic endeavor towards design and construction an artificial system comprises efficient method nicotinamide cofactor (NADPH) regeneration under visible employing graphene-based...

Abstract Functionalized graphene quantum dots (fGQDs) as visible‐light‐harvesting photocatalysts for solar fuel production from CO 2 is explored the first time. The highly efficient light‐harvesting fGQDs photocatalyst upon integration with biocatalyst performs selective reduction to formic acid. results are a benchmark example of GQD based materials fuels and opens up possibilities greener synthesis other value added chemicals.

Sonnenanbeter: Ein gekoppeltes Photokatalysator-Enzym-System als neuartiges künstliches Photosynthesesystem sammelt Solarenergie nach dem Vorbild von Grünplanzen über eine Kombination aus Photo- und Biokatalyse induziert Asymmetrie in einem achiralen Substrat (siehe Bild; ADPR=Adenosindiphosphatribose, NADP=Nicotinamidadenindinucleotidphosphat).

Abstract Photocatalytic CO 2 reduction for solar fuel production has attracted considerable attention as it can simultaneously reduce the effects of worldwide fossil‐fuel shortage and global warming. As a means to achieve this we herein report facile eco‐friendly synthesis highly active carbon nanodots‐silica hybrid photocatalyst (CNDSH) by reverse microemulsion method with nonionic surfactant. The photocatalyst‐biocatalyst coupled system developed using CNDSH functions efficiently carry out...

Abstract Our growing energy demands must be met by a sustainable supply with reduced carbon intensity. One of the most exciting prospects to realize this goal is photocatalyst-biocatalyst integrated artificial photosynthesis system which affords solar fuel/chemicals in high selectivity from CO 2 . Graphene based photocatalysts are highly suitable for system, but their industrial scale use requires immobilization improved separation and recovery photocatalyst. Therefore practical purposes,...

Sustainable and highly regioselective solar light-assisted approach for the azide–alkyne cycloaddition reaction using a perylene-derived post-synthetic modified triazole-linked organic polymer photocatalyst.

This article reports on the full genome sequence of Paenibacillus terrae HPL-003, which is a gram-positive, endospore-forming, xylanase-producing bacterium isolated from soil found in forest residue Gara Mountain. The strain HPL-003 contains 6,083,395 bp with G+C content 46.77 mol%, 2,633 protein-coding genes, and 117 structural RNAs.

Abstract The conversion of CO 2 to valuable solar fuels by means energy using metal‐free flexible film photocatalysts is an appealing strategy. Here we demonstrate a three dimensional aromatic polymer (3DAP) derived from triptycene (TC) as metal free, stable and highly efficient visible light responsive photocatalyst for selective fuel production . For this research work, the polymerization TC Diels–Alder reaction exploited first time new synthetic approach construction photocatalyst....

Carbon dioxide (CO2) conversion into value-added chemicals/fuels by utilizing solar energy is a sustainable way to mitigate our dependence on fossil fuels and stimulate carbon-neutral economy. However, the efficient affordable of CO2 still an ongoing challenge. Here, we report interfacially synthesized visible-light-active Ni(II)-integrated covalent organic frameworks (TaTpBpy-Ni COFs) film as photocatalyst for carboxylic acid under ambient conditions. Notably, TaTpBpy-Ni COFs showed...

ABSTRACT C 60 ‐based polymeric systems have been constantly anticipated for sustainable solar energy conversion. Reported, herein is a polymer film as visible light active photocatalyst efficient and selective reduction of CO 2 the first time. The synthesized via covalent coupling monomer units consisting tetra substituted ‐pyrene conjugates through spacer groups. possesses an extended network well‐defined repeating with good stability light‐induced photocatalytic activity. enhanced...

The biochemical properties of a purified enzyme new alkalophillic endo-1,4-beta-xylanase gene, KRICT PX2 (GU967374), which was isolated from Paenibacillus sp. HPL-002 (KCTC11410BP) and expressed in E. coli, were investigated. specific activity the xylanase 51.26 μmol/min/mg proteins. Km Vmax values protein for birch wood xylan also verified to have 0.061 μM 55.3 proteins, respectively. optimum pH temperature 8~9 50oC, respectively, and, stably maintained at 40oC. Most metallic salts,...

E-mail: kilee@krict.re.krReceived January 24, 2014, Accepted February 25, 2014Key Words : Asymmetric reduction, β-Chloro ketone, Borane, Spiroborate ester, DuloxetineSerotonin and norepinephrine neurotransmitters are intimatelyinvolved in a number of neurochemical physiologicalprocesses, such as depression pain disorders. Selectiveserotonin or reuptake inhibitors theimportant class antidepressants, fluoxetine, niso-xetine, tomoxetine, duloxetine featuring the structuralsimilarity...

The development of a nitrogen doped graphene nanosheet photocatalyst for C–H arylation imidazo-pyrimidines in high yield and regioselectivity at the C-3 position is disclosed herein.