This paper presents a systematic study on the role of particle size in pure and doped nanocrystalline TiO2 photocatalysts, which was made possible by versatile wet-chemical process capable generating near-agglomeration-free with well-controlled sizes dopant dispersion. It is shown that crucial factor dynamics electron/hole recombination process. For particles 6 or 11 nm diameter, Fe3+ dopants were added to inhibit charge carrier surface recombination. The optimal concentration for different...

Ceramic/polymer hybrid solid electrolytes (HSEs) have attracted worldwide attentions because they can overcome defects by combining the advantages of ceramic (CEs) and polymer (SPEs). However, interface compatibility CEs SPEs in HSE limits their full function to a great extent. Herein, flexible ceramic/polymer is prepared via situ coupling reaction. Ceramic are closely combined strong chemical bonds, thus problem resolved ions transport rapidly an expressway. The as-prepared membrane...

The CO2 solubilities (including Henry's constant) in physical- and chemical-based ILs/DESs the COSMO-RS models describing these properties were comprehensively collected summarized. summarized results indicate that are superior to physical-based for capture, especially those ILs have functionalized cation anion, superbase DESs; some of DESs higher than ILs; best ILs, as well [BMIM][BF4] (4.20 mol kg−1), [DETAH][Im] (11.91 [L-Arg]-Gly 1:6 (4.92 kg−1) TBD-EG 1:4 (12.90 respectively. Besides...

Hydrogen production through hydrogen evolution reaction (HER) offers a promising solution to combat climate change by replacing fossil fuels with clean energy sources. However, the widespread adoption of efficient electrocatalysts, such as platinum (Pt), has been hindered their high cost. In this study, we developed an easy-to-implement method create ultrathin Pt nanomembranes, which catalyze HER at cost significantly lower than commercial Pt/C and comparable non-noble metal...

As a new mechanism to monetize web content, cryptocurrency mining is becoming increasingly popular. The idea simple: webpage delivers extra workload (JavaScript) that consumes computational resources on the client machine solve cryptographic puzzles, typically without notifying users or having explicit user consent. This mechanism, often heavily abused and thus considered threat termed "cryptojacking", estimated affect over 10 million every month; however, only few anecdotal reports exist so...

2,5-Furandicarboxylic acid (FDCA) is regarded as an important bioderived substitute for petrochemically derived terephthalic (PTA), which widely applied in the polymer industry. This work delineates base-free oxidation of 5-hydroxymethylfurfural (HMF) to FDCA ionic liquid/heteropoly (IL-HPA) catalytic system. HPAs displayed high activity selective oxidation; their active center (Mo/V) was activated by O2 and transformed from oxygen single double bonds epoxy groups, resulting yield 89 % HPMV6...

A multi-enzymatic reaction was integrated with NADH electro-regeneration to achieve the bioelectrocatalytic generation of methanol from CO₂ in a sustainable manner.

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTChemical Recycling of Waste Polystyrene into Styrene over Solid Acids and BasesZhibo Zhang, Tamaki Hirose, Suehiro Nishio, Yoshio Morioka, Naoto Azuma, Akifumi Ueno, Hironobu Ohkita, Mitsunori OkadaCite this: Ind. Eng. Chem. Res. 1995, 34, 12, 4514–4519Publication Date (Print):December 1, 1995Publication History Published online1 May 2002Published inissue 1 December...

Low yields commonly obtained during enzymatic conversion of CO₂ to methanol are attributed low solubility in water.

In order to have better insight into the structure–property relationship and promote development of potential applications ionic liquids, it is essential obtain more physicochemical property data. this research, densities viscosities binary mixtures 1, 3-dimethylimidazolium dimethylphosphate ([Mmim][DMP]) alcohol (methanol, ethanol, propanol, or isopropanol) were measured within temperature range from (293.15 323.15) K. The these four fitted by an empirical linear equation, their...

The development of multifunctional heterogeneous catalysts with high porosity and remarkable catalytic activity still remains a challenge. Herein, four highly porous metalloporphyrin covalent ionic frameworks (CIFs) were synthesized by coupling 5,10,15,20-tetrakis(4-nitrophenyl)porphyrin (TNPP) 3,8-diamino-6-phenylphenanithridine (NPPN) or 5,5'-diamino-2,2'-bipyridine (NBPy) followed ionization bromoethane (C2 H5 Br) dibromoethane H4 Br2 ) then metalization Zn Co. resulting CIFs showed...

Enzymatic CO2 conversion offers a promising strategy for alleviating global warming and promoting renewable energy exploitation, while the high cost of cofactors is bottleneck large-scale applications. To address challenge, cofactor regeneration usually coupled with enzymatic reaction. Meanwhile, artificial have been developed to further improve efficiency decrease cost. In this review, methods, such as enzymatic, chemical, electrochemical, photochemical catalysis, regeneration, together...

NADH is a required cofactor for enzymatic hydrogenation of CO2 to methanol, but the high costs deter its large-scale application. Photocatalytic reduction NAD+ promising solution that utilizes limitless solar energy. The success photocatalytic depends on use photosensitizer must enable efficient electron transfer from catalyst. Among evaluated photosensitizers, ionic porphyrin (ZnTPyPBr) was found be most in situ regeneration. Compared free system (control), methanol concentration increased...

Enzymatic reduction of CO2 to formic acid with the enzyme formate dehydrogenase (FDH) and a cofactor is promising method for conversion utilization. However, natural nicotinamide adenine dinucleotide (NADH) shows some drawbacks such as low efficiency forms isomers or dimers (1,6 - NADH NAD dimer) in regeneration reaction. To overcome them improve production acid, this work, artificial cofactors, i.e., bipyridinium-based salts methyl viologen (MV2+), 1,1'-dicarboxymethyl-4,4'-bipyridinium...

The low yield of enzymatic conversion CO2 to formic acid as well the high cost and instability using natural cofactor (NADH) hamper large-scale application utilization. To address these issues improve production acid, six bipyridinium-based artificial cofactors were developed for further integrated with electrocatalytic regeneration production. All them did show a higher catalytic performance compared NADH. Particularly, 1,1′-bis(2-(dimethylamino)ethyl)-4,4′-bipyridinium bromine exhibit...

Abstract Multi‐enzymatic cascade reaction provides a new avenue for C─C coupling directly from CO 2 under mild conditions. In this study, pathway with four enzymes including formate dehydrogenase (PaFDH), formaldehyde (BmFADH), glycolaldehyde synthase (PpGALS), and alcohol (GoADH) is developed converting gas molecules to ethylene glycol (EG) in vitro. A rhodium‐based NADH regeneration electrode constructed continuously provide the proton electron of multi‐enzymatic reaction. The prepared can...

Abstract Developing stable conductive materials with high conductivity for sodium ion (Na + ) batteries attracts ever‐increasing attention. In this work, MOF‐based solid Na ‐conducting composites functionalized by ionic liquids (ILs) were explored through introducing five kinds of ILs and their corresponding salts into the pores MIL‐101‐SO 3 Na. The pore‐filling fraction was established revealed as a key factor to enhance composites. Na‐salts could further improved increasing number ions....

Dynamic analysis of Android apps is often used together with an exerciser to increase its code coverage.One big obstacle in designing such app exercisers comes from the existence text-based inputs, which are constrained by nature input field, as length and character restrictions.In this paper, we propose TextExerciser, iterative, feedback-driven text exerciser, generates inputs for apps.Our key insight that provide feedback, called hints, malformed so our system can utilize hints improve...

Carbonic anhydrase (CA) has demonstrated great potential to mitigate CO2 emissions by enzymatic conversion of CO2, while its commercial implementation is limited the inherent shortcomings CA, such as thermal and chemical instability, high sensitivity environment, cost. To overcome drawbacks CA develop advanced technologies for mitigating emission, first time, mimetic (ZnHisGly) with characteristics natural was designed synthesized, i.e., zinc-based deep eutectic solvent (DES), boost...

Electro-enzymatic conversion of CO2 offers a promising solution for utilization, while the rate and efficiency were disappointing. To address challenge, four kinds natural deep eutectic solvents (NADES) with desirable biocompatibility developed first time used as co-electrolyte in electro-enzymatic CO2. As result, SerGly-based presents high solubility electrocatalytic activity, compared to conventional buffer. By applying SerGly CO2, yield product (methanol) is two times higher than that...