Release of ions enhanced the antibacterial performance of laser-generated, uncoated Ag nanoparticles.

Identifying the antibacterial mechanisms of elemental silver at the nanoscale remains a significant challenge due to the intertwining behaviors between the particles and their released ions. The open question is which of the above factor dominate the antibacterial behaviors when silver nanoparticles (Ag NPs) with different sizes. Considering the high reactivity of Ag NPs, prior research has primarily concentrated on coated particles, which inevitably hinder the release of Ag ions due to additional chemical agents.

[Progress in enrichment methods for protein -phosphorylation].

Protein phosphorylation is one of the most common and important post-translational modifications that regulates almost all life processes. In particular, protein phosphorylation regulates the development of major diseases such as tumors, neurodegenerative diseases, and diabetes. For example, excessive phosphorylation of Tau protein can cause neurofibrillary tangles, leading to Alzheimer's disease.

Removal mechanism of Pb(ii) from soil by biochar-supported nanoscale zero-valent iron composite materials.

As an adsorbent, biochar has a highly porous structure and strong adsorption capacity, and can effectively purify the environment. In response to the increasingly serious problem of heavy metal pollution in water, this study used nano zero valent iron and rice husk biochar to prepare a new type of magnetic sheet-like biochar loaded nano zero valent iron (BC-nZVI) composite material through rheological phase reaction, showing remarkable advantages such as low cost, easy preparation, and superior environmental remediation effect. The physical and chemical properties and structure of the material were extensively characterized using various methods such as HRTEM, XPS, FESEM, EDS, XRD, FTIR, and RAMAN.

In-situ construction of iron-modified nickel nanoparticles assisted by hexamethylenetetramine with the internal and external collaboration for highly selective electrocatalytic carbon dioxide reduction.

Carbon dioxide (CO) electroreduction provides a sustainable route for realizing carbon neutrality and energy supply. Up to now, challenges remain in employing abundant and inexpensive nickel materials as candidates for CO reduction due to their low activity and favorable hydrogen evolution. Here, the representative iron-modified nickel nanoparticles embedded in nitrogen-doped carbon (Ni-Fe-NC) with the porous botryoid morphology were successfully developed.

Insight into the Critical Role of Oxygen Vacancies and V=O Bonds Length in VO for Advanced Zinc Ion Storage.

Due to the larger sizes and stronger positive polarity of Zn than dominant univalent ions, Zn sluggish diffusion within VO host electrodes is an essential issue in developing aqueous zinc-ion batteries (ZIBs) of higher energy densities. Herein, a high-performance VO cathode was developed through subtly synthesizing and tuning VO with oxygen vacancies-enriched and elongated apical V=O bond by altering the gradient concentration of hydrazine hydrate in the gas-solid reaction system. This strategy can enhance both intrinsic and extrinsic conductivity to a large extent.

Efficient CO Capture and Separation in MOFs: Effect from Isoreticular Double Interpenetration.

Severe CO emissions has posed an increasingly alarming threat, motivating the development of efficient CO capture materials, one of the key parts of carbon capture, utilization, and storage (CCUS). In this study, a series of metal-organic frameworks (MOFs) named Sc-X (X = S, M, L) were constructed inspired by recorded MOFs, Zn-BPZ-SA and MFU-4l-Li. The corresponding isoreticular double-interpenetrating MOFs (Sc-X-IDI) were subsequently constructed via the introduction of isoreticular double interpenetration.

N,S coordination in Ni single-atom catalyst promoting CORR towards HCOOH.

Carbon-based single atom catalysts (SACs) are attracting extensive attention in the CO reduction reaction (CORR) due to their maximal atomic utilization, easily regulated active center and high catalytic activity, in which the coordination environment plays a crucial role in the intrinsic catalytic activity. Taking NiN as an example, this study reveals that the introduction of different numbers of S atoms into N coordination (Ni-NS ( = 1-4)) results in outstanding structural stability and catalytic activity. Owing to the additional orbitals around -1.

Bioinspired trimesic acid anchored electrocatalysts with unique static and dynamic compatibility for enhanced water oxidation.

Layered double hydroxides are promising candidates for the electrocatalytic oxygen evolution reaction. Unfortunately, their catalytic kinetics and long-term stabilities are far from satisfactory compared to those of rare metals. Here, we investigate the durability of nickel-iron layered double hydroxides and show that ablation of the lamellar structure due to metal dissolution is the cause of the decreased stability.

Improving rice nitrogen-use efficiency by modulating a novel monouniquitination machinery for optimal root plasticity response to nitrogen.

Plant nitrogen (N)-use efficiency (NUE) is largely determined by the ability of root to take up external N sources, whose availability and distribution in turn trigger the modification of root system architecture (RSA) for N foraging. Therefore, improving N-responsive reshaping of RSA for optimal N absorption is a major target for developing crops with high NUE. In this study, we identified RNR10 (REGULATOR OF N-RESPONSIVE RSA ON CHROMOSOME 10) as the causal gene that underlies the significantly different root developmental plasticity in response to changes in N level exhibited by the indica (Xian) and japonica (Geng) subspecies of rice.

Cost-effective core@shell structured zero-valent iron nanoparticles @ magnetic (nZVI@FeO) for Cr(vi) removal from aqueous solutions: preparation by disproportionation of Fe(ii).

Nanoscale zero-valent iron (nZVI) and its composites are known for their excellent ability to remove Cr(vi), but their preparation can be expensive due to the reduction processes. This study presents a cost-effective method to prepare core@shell structured nZVI@FeO nanocomposites using a novel Fe(ii) disproportionation reaction. The nZVI@FeO was thoroughly characterized using various techniques, including FESEM, HRTEM, EDS, XPS, XRD, FTIR, and VSM.

Enhanced CO capture in partially interpenetrated MOFs: Synergistic effects from functional group, pore size, and steric-hindrance.

Excessive CO emissions have contributed to global environmental issues, driving the development of CO capture adsorbents. Among various candidates, metal-organic frameworks (MOFs) are considered the most promising due to their unique microporous structure. Herein, a series of partially interpenetrated MOFs named UPC-XX were built to investigate the continuous enhancement in CO capture performance via synergistic effects from functional group, pore size, and steric-hindrance using theoretical calculations.

Two-dimensional MBene: a comparable catalyst to MXene for effective CORR towards C products.

Electrochemical CO reduction reaction (CORR) to high-value-added products is one of the most promising strategies for mitigating the greenhouse effect and energy shortage. Two-dimensional (2D) MXene materials are regarded as promising catalysts for electrocatalysis, and the boron-analogs of MXenes, 2D transition metal borides (MBenes), may exhibit superior CORR performance owing to their unique electronic properties. Herein, a novel 2D transition metal boride, MoB, is theoretically evaluated as a potential catalyst for the CORR by comparing it with traditional MoC.

Constructing N,S and N,P Co-Coordination in Fe Single-Atom Catalyst for High-Performance Oxygen Redox Reaction.

Single-atom catalysts (SACs) are promising electrocatalysts for the oxygen reduction reaction (ORR) and the oxygen evolution reaction (OER), in which the coordination environment plays a crucial role in activating the intrinsic activity of the central metal. Taking the FeN SAC as a probe, this work investigates the effect of introducing S or P atoms into N coordination (FeS N and FeP N (x=1-4)) on the electronic structure optimization of Fe center and its catalytic performance. Attributing to the optimal Fe 3d orbitals, FePN can effectively activate O and promote ORR with a low overpotential of 0.

Effects of Shale Pore Size and Connectivity on scCO Enhanced Oil Recovery: A Molecular Dynamics Simulation Investigation.

The differences in pore width distributions and connectivity of shale reservoirs have significant influences on supercritical carbon dioxide (scCO)-enhanced oil recovery (CO EOR) in shale. Herein, the molecular dynamics simulation was adopted to investigate the microscopic mechanism of CO EOR in the shale nanopores with different pore size width distributions and pore connectivity. The results show that the pore connectivity has significant effects on the oil displacement, and the recovery efficiency is ordered as: connected pore > double pore > single pore for the 3 nm pore, which are 91.

Precise electronic structure modulation on MXene-based single atom catalysts for high-performance electrocatalytic CO reduction reaction: A first-principle study.

Electrocatalytic CO reduction reaction (CORR) to CO is a logical approach to achieve a carbon-neutral cycle. In this work, a series of TiCO and O vacancy containing TiCO MXene-based transition metal (TM) single atom catalysts (SACs), including TM-TiCO and TM-O-TiCO, are explored for high-performance CORR. Sc/Ti/V/Cr-TiCO and Ni-O-TiCO are screened out with limiting potential (U) more positive than -0.

Graphdiyne supported Ag-Cu tandem catalytic scheme for electrocatalytic reduction of CO to C products.

The electrochemical CO reduction reaction (CORR) to added-value C products is a worthy way to effectively reduce CO levels in the atmosphere. Cu nanomaterials have been proposed as efficient CORR catalysts for producing C products; however, the difficulties in controlling their efficiency and selectivity hinder their applications. Herein, we propose a simple routine to construct a graphdiyne (GDY) supported Ag-Cu nanocluster as a C product-selective electrocatalyst and optimize the composition by electrochemical performance screening.

Molecular Dynamics Insight into the CO Flooding Mechanism in Wedge-Shaped Pores.

Because of the growing demand for energy, oil extraction under complicated geological conditions is increasing. Herein, oil displacement by CO2 in wedge-shaped pores was investigated by molecular dynamics simulation. The results showed that, for both single and double wedge-shaped models, pore Ⅱ (pore size from 3 to 8 nm) exhibited a better CO2 flooding ability than pore Ⅰ (pore size from 8 to 3 nm).

Two birds with one stone: large catalytic areas and abundant nitrogen sites inspired by fluorine doping contributing to CORR activity and selectivity.

Electroreduction of CO based on metal-free carbon catalysts is an attractive approach for useful products. However, it remains a great chemical challenge due to its unsatisfactory activity and poor selectivity. Here, we report a successful case to greatly improve CO-to-CO conversion on carbon black (CB) and nitrogen-doped carbon black (N-CB).

Surface-Plasmon-Mediated Alloying for Monodisperse Au-Ag Alloy Nanoparticles in Liquid.

Plasmonic noble-metal nanoparticles with broadly tunable optical properties and catalytically active surfaces offer a unique opportunity for photochemistry. Resonant optical excitation of surface-plasmon generates high-energy hot carriers, which can participate in photochemical reactions. Although the surface-plasmon-driven catalysis on molecules has been extensively studied, surface-plasmon-mediated synthesis of bimetallic nanomaterials is less reported.

Interlayer Expansion in a Layered Metal-Organic Framework Enhances CO Capture and CO /N Separation.

Developing efficient CO adsorbent materials and technologies is significant to reduce the increasing greenhouse gases concentration in the atmosphere. Herein, a layered MOF with a porous kagomé lattice (kgm), which owned three phases (kgm-1, kgm-2, and kgm-3) via interlayer expansion, was evaluated as a promising CO capture and separation material by using grand canonical Monte Carlo simulations. Results showed that the interlayer expansion provided additional pore volume, which played a considerable role in CO adsorption and separation.

Theoretical Investigation of the Fusion Process of Mono-Cages to Tri-Cages with CH/CH Guest Molecules in sI Hydrates.

Owing to a stable and porous cage structure, natural gas hydrates can store abundant methane and serve as a potentially natural gas resource. However, the microscopic mechanism of how hydrate crystalline grows has not been fully explored, especially for the structure containing different guest molecules. Hence, we adopt density functional theory (DFT) to investigate the fusion process of structure I hydrates with CH/CH guest molecules from mono-cages to triple-cages.

Can N, S Cocoordination Promote Single Atom Catalyst Performance in CO RR? Fe-N S Porphyrin versus Fe-N Porphyrin.

Single atom catalysts (SACs) are promising electrocatalysts for CO reduction reaction (CO RR), in which the coordination environment plays a crucial role in intrinsic catalytic activity. Taking the regular Fe porphyrin (Fe-N porphyrin) as a probe, the study reveals that the introduction of opposable S atoms into N coordination (Fe-N S porphyrin) allows for an appropriate electronic structural optimization on active sites. Owing to the additional orbitals around the Fermi level and the abundant Fe orbital occupation after S substitution, N, S cocoordination can effectively tune SACs and thus facilitating protonation of intermediates during CO RR.

Carbon Quantum Dots Promote Coupled Valence Engineering of V O Nanobelts for High-Performance Aqueous Zinc-Ion Batteries.

Aqueous Zn-ion batteries (ZIBs) have acquired the researchers' curiosity owing to their harmlessness, cost effectiveness and high theoretical capacity of Zn anode. However, desirable cathode materials with high-capacity and high-rate are still scarce. In this work, the formation of carbon quantum dots induced vanadium pentoxide nanobelts was demonstrated via a facile one-step hydrothermal method for ZIBs.