Stable, recyclable, hybrid ionic-electronic conductive hydrogels with non-covalent networks enhanced by bagasse cellulose nanofibrils for wearable sensors.

Conductive hydrogels are utilized in flexible sensors due to their high-water content, excellent elasticity, and shape controllability. However, the sharp increase in resistance of this material under enormous strain leads to instability in the sensing process. This study presents a straightforward method for creating a stable, recyclable, hybrid ionic-electronic conductive (HIEC) hydrogel via a simple one-pot strategy using polyvinyl alcohol (PVA), bagasse cellulose nanofibrils (CNF), and graphene(G) with sodium dodecylbenzene sulfonate (SDBS).

Temperature-responsive gating chitosan-based microcapsules for controlled release of urea fertilizers.

Polysaccharides-based smart fertilizers are essential for promoting plant growth, yet significant challenges exist in achieving stable structures and synchronizing nutrient release and plant growth. This study developed a temperature-responsive gating chitosan-based microcapsule (CTSMC-g-PNIPAM) by grafting N-isopropyl acrylamide (NIPAM) onto chitosan microcapsules (CTSMC) via atom transfer radical polymerization (ATRP). The interfacial crosslinking of chitosan (CTS) and terephthalendehyde (TPA) formed the CTSMC matrix with a hollow chamber structure and ensured stability.

A green extraction technology of lignocellulose from cassava residue by mechanical activation-assisted ternary deep eutectic solvent.

Lignocellulose (LC) is a natural polymer material that holds immense potential for various applications. However, extracting LC from biomass wastes with high-starch content has been challenging due to low selectivity and yield. In this study, LC was prepared from cassava residue (CR) via a combination of mechanical activation pretreatment and a citric acid (CA)-enhanced ternary deep eutectic solvent (TDES) consisting of choline chloride (ChCl), lactic acid (LA), and CA.

Bi-functional NiFeO/SrTiO S-scheme heterojunction for eminent performance photocatalytic treatment of sewage effluent and electrochemical hydrazine determination.

Devising of materials that afforded dual applicability in decontamination and pollutant detection were still a towering challenge owing to the increasing flux of discharge toxic contaminants over the years. Herein, the NiFeO nanoparticles-loaded on cube-like SrTiO (NiFeO/SrTiO) composite was fabricated by a two-step hydrothermal approach providing remarkable photocatalytic treatment and electrochemical sensing of noxious pollutants in wastewater. The material traits of the fabricated composite were scrutinized by myriad characterization approaches.

Highly Stable Ni-B/Honeycomb-Structural AlO Catalysts for Dry Reforming of Methane.

Two-component catalysts have garnered significant attention in the field of catalysis due to their ability to inhibit Ni sintering. In the present work, honeycomb-structuralstructured AlO-supported Ni and B were prepared to enhance coke tolerance during dry reforming of methane (DRM). Transmission electron microscopy (TEM) results revealed that the average particle sizes on Ni/AlO and Ni-0.

WO/BiOBr S-Scheme Heterojunction Photocatalyst for Enhanced Photocatalytic CO Reduction.

The photocatalytic CO reduction strategy driven by visible light is a practical way to solve the energy crisis. However, limited by the fast recombination of photogenerated electrons and holes in photocatalysts, photocatalytic efficiency is still low. Herein, a WO/BiOBr S-scheme heterojunction was formed by combining WO with BiOBr, which facilitated the transfer and separation of photoinduced electrons and holes and enhanced the photocatalytic CO reaction.

Preparation of porous superabsorbent particles based on starch by supercritical CO drying and its water absorption mechanism.

The slow water-absorption speed of starch-based superabsorbent resin (St-SAP) limits its application. In this study, porous St-SAP (P-St-SAP) was prepared by inverse suspension polymerization and supercritical CO drying, the aim is to provide a preparation method of fast absorbent resin. The P-St-SAP at 33 % starch content had an interpenetrating porous structure with macropores, mesopores and micropores, and the surface area, pore volume and average pore diameter were 32.

Temperature-Sensitive Aerogel Using Bagasse Carboxylated Cellulose Nanocrystals/N-Isopropyl Acrylamide for Controlled Release of Pesticides.

Temperature-sensitive carboxylated cellulose nanocrystals/N-isopropyl acrylamide aerogels (CCNC-NIPAMs) were developed as novel pesticide-controlled release formulas. Ammonium persulfate (APS) one-step oxidation was used to prepare bagasse-based CCNCs, and then the monomer N-isopropyl acrylamide (NIPAM) was successfully introduced and constructed into the temperature-sensitive CCNC-NIPAMs through polymerization. The results of the zeta potential measurement and Fourier infrared transform spectrum (FTIR) show that the average particle size of the CCNCs was 120.

Phosphorus-Doped Hollow Tubular g-CN for Enhanced Photocatalytic CO Reduction.

Photocatalytic CO reduction is a tactic for solving the environmental pollution caused by greenhouse gases. Herein, NHHPO was added as a phosphorus source in the process of the hydrothermal treatment of melamine for the first time, and phosphorus-doped hollow tubular g-CN (x-P-HCN) was fabricated and used for photocatalytic CO reduction. Here, 1.

Enhanced Water Absorbency and Water Retention Rate for Superabsorbent Polymer via Porous Calcium Carbonate Crosslinking.

To improve the water absorbency and water-retention rate of superabsorbent materials, a porous calcium carbonate composite superabsorbent polymer (PCC/PAA) was prepared by copolymerization of acrylic acid and porous calcium carbonate prepared from ground calcium carbonate. The results showed that the binding energies of C-O and C=O in the O 1 profile of PCC/PAA had 0.2 eV and 0.

Nanostructure Design of Catalysts: Latest Advances and Prospects.

The recent development of nanotechnology has laid the foundation for the design and preparation of various nanostructured materials [...

Ni-Ti Intercalated and Supported Bentonite for Selective Hydrogenation of Cinnamaldehyde.

Ni-Ti intercalated bentonite catalysts (Ni-Ti-bentonite) and Ni-TiO supported bentonite catalysts (Ni-TiO /bentonite) were prepared, and the effects of Ni-Ti supported and intercalated bentonite on the selective hydrogenation of cinnamaldehyde were investigated. Ni-Ti intercalated bentonite enhanced the Brønsted acid sites strength, decreased the acid amount and Lewis's acid sites strength, which inhibited the activation of the C=O bond and contributed to selective hydrogenation of the C=C bond. When Ni-TiO was supported on bentonite, the acid amount and Lewis's acid strength of the catalyst increased, providing additional adsorption sites and increased the acetals byproducts.

Characterization of Modified Mechanically Activated Cassava Starch Magnetic Porous Microspheres and Its Adsorption for Cd(II) Ions.

The magnetic polymer microsphere is a promising adsorbent due to its high adsorption efficiency and good regeneration ability from wastewater. Cassava starch magnetic porous microspheres (AAM-MSMPMs) were synthesized by graft copolymerization in inverse emulsion. Mechanically activated cassava starch (MS) was used to graft skeletons, vinyl monomers [acrylic acid (AA) and acrylamide (AM)] as copolymerized unsaturated monomers, methyl methacrylate (MMA) as the dispersing agent, and polyethylene glycol/methanol (PEG2000/MeOH) as the porogen.

FeO supported Pt single atom catalysts for the selective hydrogenation of cinnamaldehyde.

Atomically dispersed Pt species supported on FeO (Pt/FeO) are successfully constructed by a simple ball milling process. In the selective hydrogenation of cinnamaldehyde (CAL), Pt/FeO achieves an excellent cinnamyl alcohol (COL) selectivity of 81.7% at a CAL conversion of 91.

Structure identification and analysis of the suspected chemical precursor of 2-fluorodeschloroketamine and its decomposition products.

In this work, 1-[(2″-fluorophenyl)(methylimino)methyl]cyclopentan-1-ol (2-fluorodeschlorohydroxylimine) was identified as a suspected chemical precursor of 2-fluorodeschloroketamine (2-FDCK) using gas chromatography-mass spectrometry (GC-MS) and gas chromatography-quadrupole/time-of-flight mass spectrometry (GC-Q/TOF-MS) and comparing the data with those of ketamine and its chemical precursor, hydroxylimine. Furthermore, the entire fragmentation pathway of 2-fluorodeschlorohydroxylimine was theorized from the GC-MS spectrum recorded using an electron ionization (EI) source, and the mechanisms and decomposition pathways of 2-fluorodeschlorohydroxylimine were elucidated. In protic solvents, the nitrogen atom in the C═N group of 2-fluorodeschlorohydroxylimine underwent a protonation reaction.

Sulfur Vacancy and Ti C T Cocatalyst Synergistically Boosting Interfacial Charge Transfer in 2D/2D Ti C T /ZnIn S Heterostructure for Enhanced Photocatalytic Hydrogen Evolution.

Constructing an efficient photoelectron transfer channel to promote the charge carrier separation is a great challenge for enhancing photocatalytic hydrogen evolution from water. In this work, an ultrathin 2D/2D Ti C T /ZnIn S heterostructure is rationally designed by coupling the ultrathin ZnIn S with few-layered Ti C T via the electrostatic self-assembly strategy. The 2D/2D Ti C T /ZnIn S heterostructure possesses larger contact area and strong electronic interaction to promote the charge carrier transfer at the interface, and the sulfur vacancy on the ZnIn S acting as the electron trap further enhances the separation of the photoinduced electrons and holes.

Prepared self-growing supported nickel catalyst by recovering Ni (Ⅱ) from metal wastewater using geopolymer microspheres.

Here, new and effective microsphere adsorbents were synthesized by NaOH activating slag based geopolymer (Na-SGS). These microsphere adsorbents upset the adsorption equilibrium with the maximum Ni adsorption capacity of 414.38 mg/g which is much larger than that of other geopolymer materials.

An overview of photocatalysis facilitated by 2D heterojunctions.

Two-dimensional (2D) photocatalysts have attracted considerable research interest in the past decades due to their unique optical, physical and chemical properties. Constructing 2D/2D heterojunctions with large interface area has been considered as an effective approach to enhance the transfer rate and the separation efficiency of the charge carriers, leading to dramatic increase in the photocatalytic performance of the photocatalysts. Here, the state-of-the-art progress on heterojunctions based on 2D materials is reviewed, including the photocatalysis principles using 2D heterojunctions, the categories of 2D heterojunctions and their application in different photocatalytic reactions, and the theoretical studies of the 2D heterojunctions.

2D/2D heterojunction of TiC/g-CN nanosheets for enhanced photocatalytic hydrogen evolution.

Photocatalytic hydrogen evolution from water has received enormous attention due to its ability to address a number of global environmental and energy-related issues. Here, we synthesize 2D/2D Ti3C2/g-C3N4 composites by electrostatic self-assembly technique and demonstrate their use as photocatalysts for hydrogen evolution under visible light irradiation. The optimized Ti3C2/g-C3N4 composite exhibited a 10 times higher photocatalytic hydrogen evolution performance (72.

Low temperature CO oxidation catalysed by flower-like Ni-Co-O: how physicochemical properties influence catalytic performance.

In this work, mesoporous Ni-Co composite oxides were synthesized by a facile liquid-precipitation method without the addition of surfactant, and their ability to catalyse a low temperature CO oxidation reaction was investigated. To explore the effect of the synergetic interaction between Ni and Co on the physicochemical properties and catalytic performance of these catalysts, the as-prepared samples were characterized using XRF, XRD, LRS, N-physisorption (BET), SEM, TEM, XPS, H-TPR, O-TPD and DRIFTS characterization techniques. The results are as follows: (1) the doping of cobalt can reduces the size of NiO, thus massive amorphous NiO have formed and highly dispersed on the catalyst surface, resulting in the formation of abundant surface Ni ions; (2) Ni ions partially substitute Co ions to form a Ni-Co spinel solid solution, generating an abundance of surface oxygen vacancies, which are vital for CO oxidation; (3) the NiCo catalyst exhibits the highest catalytic activity and a satisfactory stability for CO oxidation, whereas a larger cobalt content results in a decrease in activity, suggesting that the amorphous NiO phase is the dominant active phase instead of CoO for CO oxidation; (4) the introduction of Co can alter the morphology of catalyst from plate-like to flower-like and then to dense granules.

One-Step Synthesis of Nb O /C/Nb C (MXene) Composites and Their Use as Photocatalysts for Hydrogen Evolution.

Hydrogen production through facile photocatalytic water splitting is regarded as a promising strategy to solve global energy problems. Transition-metal carbides (MXenes) have recently drawn attention as potential co-catalyst candidates for photocatalysts. Here, we report niobium pentoxide/carbon/niobium carbide (MXene) hybrid materials (Nb O /C/Nb C) as photocatalysts for hydrogen evolution from water splitting.

Intrinsic Kinetics of Dimethyl Ether Synthesis from Plasma Activation of CO Hydrogenation over Cu-Fe-Ce/HZSM-5.

CO is activated in a plasma reactor followed by hydrogenation over a Cu-Fe-Ce/HZSM-5 catalyst, and the intrinsic kinetics of the plasma catalytic process are studied. Compared with CO hydrogenation using Cu-Fe-Ce/HZSM-5 alone, the CO conversion and the dimethyl ether selectivity for the plasma catalytic process are increased by 16.3 %, and 10.

Preparation of InYO3 catalyst and its application in photodegradation of molasses fermentation wastewater.

An InYO3 photocatalyst was prepared through a precipitation method and used for the degradation of molasses fermentation wastewater. The InYO3 photocatalyst characterized by X-ray diffraction (XRD), UV-Vis diffuse reflectance spectroscopy, surface area and porosimetry. Energy band structures and density of states were achieved using the Cambridge Serial Total Energy package (CASTEP).

[Infrared study on adsorption of O3 at SnO2 surface].

SnO2 was prepared by precipitation method and mental oxides modified SnO2 catalysts were prepared by coprecipitation method. High concentration molasses fermentation wastewater degradation by SnO2 catalyzed ozonation was used as a probe reaction and IR spectra were used to study the adsorption of O3 at SnO2 and different metal oxides modification SnO2 surface. The results showed, that in the infrared absorption spectra of adsorption of O3 prepared by pure O2 at SnO2 catalyst surface, two obvious bidentate absorption double peaks were found at 1 027 and 1 055 cm(-1), and 2 099 and 2 122 cm(-1), respectively.

Decolorization of molasses fermentation wastewater by SnO(2)-catalyzed ozonation.

In the presence of O(3), the oxidative decolorization reaction on molasses fermentation wastewater with SnO(2) as a catalyst was studied. The results showed that SnO(2) accelerated the ozone oxidation reaction and the oxidative decolorization of molasses fermentation wastewater was accelerated. Influences on SnO(2) catalytic ozonation activity by precipitants and the calcination temperature were studied by XRD, IR and TG-DSC.