Influence of Cu2O Precursor Surface Orientation on Catalytic Performance and Product Selectivity in Nitrate Reduction Reactions.

Oxide-derived copper (OD-Cu) has attracted considerable attention due to its exceptional electrocatalytic performance toward various reactions, including the reduction of nitrate (NO3-) to ammonia (NH3). Furthermore, numerous techniques have been developed to synthesize copper oxides with well-defined surface orientations. However, the relationship between the surface orientation of the precursor and the NO3- reduction performance of the resulting OD-Cu catalyst remains unclear.

Bioenergy production from yeast through a thermo-chemical platform.

Alternative fuels are urgently needed to mitigate greenhouse gas emissions. This study was conducted to recover bioenergy from non-edible feedstock, an oleaginous yeast biomass obtained during fed-batch cultivation of Yarrowia lipolytica. Yeast oil (lipids) was extracted from the harvested biomass and readily converted into biodiesel using the non-catalytic transesterification method.

Simultaneous utilization of CO and potassium-rich biomass for the environmentally friendly production of potassium formate.

The C chemical species, potassium formate (K(HCO)), known as a two-electron reducing agent, finds application in the synthesis of multi-carbon compounds, including oxalate, and plays a crucial role not only in the food and pharmaceutical industries but also across various sectors. However, the direct hydrogenation of CO to produce K(HCO) remains a challenge. Addressing this issue, efficient production of K(HCO) is achieved by integrating CO hydrogenation in a trickle-bed reactor using a heterogeneous catalyst with a novel separation method that utilizes potassium ions from biomass ash for formic acid derivative product isolation.

Sodiation of Enhanced Green Fluorescent Protein (EGFP) in Basic Solution Studied by Electrospray Mass Spectrometry.

In our previous work, the sodiation of melittin, cytochrome c, and ubiquitin in a 1 mM NaOH water/methanol solution was studied by electrospray mass spectrometry. It was suggested that the α-helix is more resistant to sodiation than the β-sheet. In this study, sodiation of enhanced green fluorescent protein (EGFP) composed of a β-barrel was studied in 1% CHCOOH (AcOH) or 1 mM NaOH water/methanol solution by electrospray mass spectrometry.

Two-Dimensional BiOCl Nanosheet-Encapsulated CuO Octahedra: p-n Junction Photocatalysts for Efficient Visible Light Driven CO-To-CH Conversion.

CuO has attracted significant attention as a potential photocatalyst for CO reduction. However, its practical use is limited by rapid charge recombination, insufficient catalytic sites, and poor stability. In this study, we report a facile synthesis of CuO@BiOCl core-shell hybrids with a well-defined shape of CuO and a two-dimensional nanosheet structure of BiOCl.

Transient Absorption Microscopy Maps Spatial Heterogeneity and Distinct Chemical Environments in Photocatalytic Carbon Nitride Particles.

Limitations in solar energy conversion by photocatalysis typically stem from poor underlying charge carrier properties. Transient Absorption (TA) reveals insights on key photocatalytic properties such as charge carrier lifetimes and trapping. However, on the microsecond timescale, these measurements use relatively large probe sizes ranging in millimetres to centimetres which averages the effect of spatial heterogeneity at smaller length scales.

Engineering xylose utilization in Cupriavidus necator for enhanced poly(3-hydroxybutyrate) production from mixed sugars.

Lignocellulosic biomass is a promising renewable feedstock for biodegradable plastics like polyhydroxyalkanoates (PHAs). Cupriavidus necator, a versatile microbial host that synthesizes poly(3-hydroxybutyrate) (PHB), the most abundant type of PHA, has been studied to expand its carbon source utilization. Since C.

Bio-mitigation of CO: The co-production of phycocyanin and optically pure (R)-γ-valerolactone with perfect enantiomeric excess.

To overcome the climate crisis, various greenhouse gas (GHG) mitigation strategies have been developed, and every effort has been made to achieve carbon neutrality. Given that petroleum-based industries and the transportation sector emit enormous amounts of GHGs, the product spectra of biorefineries should be expanded beyond drop-in biofuels to include more value-added products. This study aimed to construct a CO mitigation system.

Strategy for Enhancing Catalytic Active Site: Introduction of 1D material InSeI for Electrochemical CO Reduction to Formate.

The presence of oxygen vacancies (V) in electrocatalysts plays a significant role in improving the selectivity and activity of CO reduction reaction (CORR). In this study, 1D material with large surface area is utilized to enable uniform V formation on the catalyst. 1D structured indium selenoiodide (InSeI) is synthesized and used as an electrocatalyst for the conversion of CO to formate.

Improvement of succinate production from methane by combining rational engineering and laboratory evolution in Methylomonas sp. DH-1.

Recently, methane has been considered a next-generation carbon feedstock due to its abundance and it is main component of shale gas and biogas. Methylomonas sp. DH-1 has been evaluated as a promising industrial bio-catalyst candidate.

How do cocaine and morphine in methanol solution desorb at the last moment of Leidenfrost phenomenon-assisted thermal desorption?

Rationale: The objective of the present study is to investigate desorption of low-volatility analytes in Leidenfrost phenomenon-assisted thermal desorption (LPTD).

Methods: LPTD was investigated for 5 μL solutions of 0.03 ppm cocaine or morphine in methanol (sample weight: 0.

Sustainable Formate Production via Highly Active CO Hydrogenation Using Porous Organometallic Polymer with Ru-PNP Active Sites.

Efforts to combine the advantages of homogeneous catalysts in terms of activity with the ease of separation process offered by heterogeneous catalysts continue to be actively pursued in the field of catalyst development. Heterogeneous catalysts were synthesized from Ru-MACHO organometallic compounds, recognized for their high hydrogenation catalytic activity linked to the active site of the Ru-PNP motif, through direct polymerization utilizing the Friedel-Crafts reaction. These catalysts were then applied for the conversion of greenhouse gas carbon dioxide (CO) into formate via hydrogenation, exhibited with a record-high turnover frequency of 31,700 and a productivity of 36,100 kg/(kg ⋅ d).

Sustainable production of microbial protein from carbon dioxide in the integrated bioelectrochemical system using recycled nitrogen sources.

Given the urgency of climate change, it is imperative to develop innovative technologies for repurposing CO into value-added products to achieve carbon neutrality. Additionally, repurposing nitrogen-source-derived wastewater streams is crucial, focusing on sustainability rather than conventional nitrogen removal in wastewater treatment plants. In this context, microbial protein (MP) production presents a sustainable and promising approach for transforming recovered low-value resources into high-quality feed and food.

Nitrogen-doped carbon quantum dot regulates cell proliferation and differentiation by endoplasmic reticulum stress.

Quantum dots have diverse biomedical applications, from constructing biological infrastructures like medical imaging to advancing pharmaceutical research. However, concerns about human health arise due to the toxic potential of quantum dots based on heavy metals. Therefore, research on quantum dots has predominantly focused on oxidative stress, cell death, and other broader bodily toxicities.

Surface properties of carbon nitride materials used in photocatalytic systems for energy and environmental applications.

The use of photocatalytic systems involving semiconductor materials for environmental and energy applications, such as water remediation and clean energy production, is highly significant. In line with this, a family of carbon-based polymeric materials known as carbon nitride (CN) has emerged as a promising candidate for this purpose. Despite CN's remarkable characteristics of performance, stability, and visible light responsiveness, its chemical inertness and poor surface properties hinder interfacial interactions, which are key to effective catalysis.

Exploring the influence of cell configurations on Cu catalyst reconstruction during CO electroreduction.

Membrane electrode assembly (MEA) cells incorporating Cu catalysts are effective for generating C chemicals via the CO reduction reaction (CORR). However, the impact of MEA configuration on the inevitable reconstruction of Cu catalysts during CORR remains underexplored, despite its considerable potential to affect CORR efficacy. Herein, we demonstrate that MEA cells prompt a unique reconstruction of Cu, in contrast to H-type cells, which subsequently influences CORR outcomes.

Spectrometric monitoring of CO electrolysis on a molecularly modified copper surface.

Since copper has been extensively studied due to its unique ability to reduce carbon dioxide to hydrocarbons and alcohols, it tends to yield a mixture of products. Among various efforts to improve the selectivity and efficiency of this catalysis, the introduction of organic molecules and polymers on the copper/electrolyte interface has proven to be an effective and promising way to improve surface activity, considering the variation and precise designability of organic structures. The role of surface molecular modifiers, however, is not as simple as that in homogeneous catalysts, and an understanding of a wide scale of interactions from the atomic scale to the whole electrode structure is required.

Proton-Coupled Electron Transfer on CuO/TiCT MXene for Propane (CH) Synthesis from Electrochemical CO Reduction.

Electrochemical CO reduction reaction (CORR) to produce value-added multi-carbon chemicals has been an appealing approach to achieving environmentally friendly carbon neutrality in recent years. Despite extensive research focusing on the use of CO to produce high-value chemicals like high-energy-density hydrocarbons, there have been few reports on the production of propane (CH), which requires carbon chain elongation and protonation. A rationally designed 0D/2D hybrid CuO anchored-TiCT MXene catalyst (CuO/MXene) is demonstrated with efficient CORR activity in an aqueous electrolyte to produce CH.

Interfacial Engineering for Controlled Crystal Mosaicity in Single-Crystalline Perovskite Films.

Organic-inorganic hybrid perovskites have attracted significant attention for optoelectronic applications due to their efficient photoconversion properties. However, grain boundaries and irregular crystal orientations in polycrystalline films remain issues. This study presents a method for producing crystalline-orientation-controlled perovskite single-crystal films using retarded solvent evaporation.