Minimizing CO emissions by photocatalytic CO reduction to CHOH over LiMnO/WO heterostructures under visible illumination.

Photocatalytic CO reduction to valuable fuels has proved to be a favourable process to produce renewable energy and reduce CO emissions, which mostly depends on designing effective photocatalysts with the rapid separation rate of charge carriers. In this contribution, mesoporous n-n heterojunction LiMnO/WO nanocomposites were designed via a simplistic sol-gel process for CO reduction utilizing visible illumination (λ > 420 nm). XRD and TEM measurements confirmed the synthesized LiMnO/WO nanocomposite is a monoclinic structure, and its particle size is 25 ± 5 nm.

Synthesis of mesoporous Ag/α-FeO/TiO heterostructures with enhanced and accelerated photo/-catalytic reduction of 4-nitrophenol.

4-Nitrophenol (4-NP) is reported to originate disadvantageous effects on the human body collected from industrial pollutants; therefore, the detoxification of 4-NP in aqueous contamination is strongly recommended. In this study, the heterojunction mesoporous α-FeO/TiO modulated with diverse Ag percentages has been constructed via a sol-gel route in the occurrence of a soft template P123. The formation of biphasic crystalline TiO anatase and brookite phases has been successfully achieved with the average 10 nm particle sizes.

Hierarchical porous TiO with a uniform distribution of anchored gold nanoparticles for enhanced photocatalytic efficiency and accelerated charge separation for the degradation of antibiotics.

A novel approach to synthesize porous Au/TiO nanocomposites has been achieved through a pyrolytic strategy by employing NH-MIL-125(Ti) as a TiO precursor, and photo-deposition of Au nanoparticles (NPs) onto porous nanocrystalline TiO with varying Au contents (0.05-0.5%).

Mesoporous BiVO/TiO heterojunction: enhanced photoabsorption and photocatalytic ability through promoted charge transfer.

BiVO has been constructed into heterojunctions with TiO to boost the photocatalytic ability under visible illumination. Here, mesoporous BiVO/TiO nanocomposites have been fabricated by a facile sol-gel approach utilizing nonionic surfactant and addressed for morphological, optical, structural, and degradation of ciprofloxacin (CIP) in water under visible illumination as an antibiotic pollutant model. The TEM images demonstrated that the TiO NPs are homogenous in terms of shape and size (15 ± 5 nm).

Impact of reaction parameters for photodegradation pharmaceuticals in wastewater over gold/titania photocatalyst synthesized by pyrolysis of NH-MIL-125(Ti).

The efficient remediation of pharmaceuticals, including wastewater, remains a remarkably challenging issue for water regeneration. Herein, porous Au/TiO synthesized by pyrolysis of NH-MIL-125(Ti) was utilized to be an efficient photocatalyst for mineralization of trimethoprim (TMP) and Metronidazole (MNZ) as the parent compound. The effects of different factors, including TMP and MNZ concentrations, light intensity, HO concentration, Au/TiO dosage, and pH value of reaction solution on the degradation and mineralization performances during UV and visible light (VIS), were addressed.

S-scheme mesoporous LiMnO/g-CN heterojunctions as efficient photocatalysts for the mineralization of trichloroethylene in aqueous media.

Novel mesoporous LiMnO/g-CN heterostructures were prepared for the first time by utilizing the sol-gel route in the presence of a nonionic surfactant. TEM and XRD measurements showed that LiMnO (5-10 nm) with monoclinic structures was uniformly distributed onto porous g-CN for the construction of LiMnO/g-CN heterojunctions. The obtained photocatalysts were assessed for mineralization and removal of trichloroethylene (TCE) in aqueous media under visible light exposure.

Highly Dispersed Pt Nanoparticle-Doped Mesoporous ZnO Photocatalysts for Promoting Photoconversion of CO to Methanol.

Photoreduction of CO is considered a challenge due to the lack of effective photocatalysts with wide-spectrum absorption, active charge separation dynamically, and CO adsorption. Herein, mesoporous Pt/ZnO nanocomposites with different Pt percentages (0.5-2%) have been fabricated using the sol-gel process in the presence of a template for CO photoreduction during visible-light exposure.

Intense Visible-Light Absorption in SrRuO/CN Heterostructures for the Highly Efficient Reduction of Hg(II).

Strontium ruthenium oxide (SrRuO) is recognized as a metallic itinerant ferromagnet and utilized as a conducting electrode in heterostructure oxides with unforeseen optical characteristics, including remarkably low-reflection and high-absorption visible-light spectrum compared to classical metals. By coupling mesoporous SrRuO nanoparticles (NPs) with porous g-CN nanosheets for the first time, we evidence remarkably promoted visible light absorption and superior photocatalytic performances for Hg(II) reduction under illumination with visible light. The photocatalytic performance of g-CN increased upon boosting the SrRuO percentage to 1.

Hydrogen Generation over RuO Nanoparticle-Decorated LaNaTaO Perovskite Photocatalysts under UV Exposure.

The efficacy of LaNaTaO perovskites decoration RuO at diverse contents for the photocatalytic H generation has been explored in this study. The photocatalytic performance of RuO co-catalyst onto mesoporous LaNaTaO was evaluated for H under UV illumination. 3%RuO/LaNaTaO perovskite photocatalyst revealed the highest photocatalytic H generation performance, indicating that RuO nanoparticles could promote the photocatalytic efficiency of LaNaTaO perovskite significantly.

Fabrication of Mesoporous PtO-ZnO Nanocomposites with Promoted Photocatalytic Performance for Degradation of Tetracycline.

Herein, we report a simple incorporation of PtO NPs at diverse percentages (0.2-0.8 wt %) onto a highly crystalline and mesoporous ZnO matrix by the wet-impregnation approach for degradation of tetracycline (TC) upon visible light exposure.

SARS-CoV-2 (Covid-19): A short update on molecular biochemistry, pathology, diagnosis and therapeutic strategies.

The ongoing coronavirus (covid-19) pandemic highlights the need for global scientific cooperation to advance our understanding of the immunological, molecular and biochemical mechanisms causing infection by this virus. Better understanding of key processes has allowed the development of vaccines in record time, and of agents with the potential to treat and neutralize current and future coronavirus outbreaks. To date, clinically effective agents for prevention and treatment of covid-19 infections are limited.

Facile Synthesis of Mesoporous AgO-ZnO Heterojunctions for Efficient Promotion of Visible Light Photodegradation of Tetracycline.

Fabrication of 3D mesoporous AgO-ZnO heterojunctions at varying AgO contents has been achieved through poly(ethylene glycol)--poly(propylene glycol)--poly(ethylene glycol) (Pluronic F-108) as the structure-directing agent for the first time. The mesoporous AgO-ZnO nanocomposites exhibited a mesoporous structure, which revealed a large pore volume and high surface area. The photocatalytic efficiency over mesoporous AgO-ZnO nanocomposites for tetracycline (TC) compared with that over commercial P-25 and pristine ZnO NPs through the visible light exposure was studied.

Soft and hard templates assisted synthesis mesoporous CuO/g-CN heterostructures for highly enhanced and accelerated Hg(II) photoreduction under visible light.

Herein, triblock copolymer surfactant (F127) and mesoporous silica (MCM-41) as soft and hard templates were employed to synthesize of mesoporous CuO/g-CN heterostructures with large surface areas for Hg(II) photoreduction in existence of formic acid as a holes sacrificial. TEM image for mesoporous CuO/g-CN indicated that CuO NPs are homogeneously distributed with spherical shape in particle size ~5 nm onto the surface of g-CN. Mesoporous 2%CuO/g-CN heterostructure was achieved a high Hg(II) photoreduction rate of 628.

Doping Strontium into Neodymium Manganites Nanocomposites for Enhanced Visible light Driven Photocatalysis.

NdSrMnO nanocomposites perovskites were synthesized using sol gel method at different Sr content x = 0.3, 0.5, 0.

Photodegradation of Microcystin-LR Using Visible Light-Activated C/N-co-Modified Mesoporous TiO₂ Photocatalyst.

Microcystin-LR (MC-LR), a potent hepatotoxin produced by the cyanobacteria, is of increasing concern worldwide because of severe and persistent impacts on humans and animals by inhalation and consumption of contaminated waters and food. In this work, MC-LR was removed completely from aqueous solution using visible-light-active C/N-co-modified mesoporous anatase/brookite TiO₂ photocatalyst. The co-modified TiO₂ nanoparticles were synthesized by a one-pot hydrothermal process, and then calcined at different temperatures (300, 400, and 500 °C).

Highly Sensitive Ethanol Chemical Sensor Based on Novel Ag-Doped Mesoporous α-FeO Prepared by Modified Sol-Gel Process.

Mesoporous α-FeO has been synthesized via a simple sol-gel procedure in the presence of Pluronic (F-127) triblock copolymer as structure directing agent. Silver (Ag) nanoparticles were deposited onto α-FeO matrix by the photochemical reduction approach. Morphological analysis revealed the formation of Ag nanoparticles with small sizes < 20 nm onto the mesoporous structure of α-FeO possessing < 50 nm semi-spherical shape.

Mesoporous WO-graphene photocatalyst for photocatalytic degradation of Methylene Blue dye under visible light illumination.

Advanced oxidation technologies are a friendly environmental approach for the remediation of industrial wastewaters. Here, one pot synthesis of mesoporous WO and WO-graphene oxide (GO) nanocomposites has been performed through the sol-gel method. Then, platinum (Pt) nanoparticles were deposited onto the WO and WO-GO nanocomposite through photochemical reduction to produce mesoporous Pt/WO and Pt/WO-GO nanocomposites.

Efficient photodecomposition of herbicide imazapyr over mesoporous GaO-TiO nanocomposites.

The unabated release of herbicide imazapyr into the soil and groundwater led to crop destruction and several pollution-related concerns. In this contribution, heterogeneous photocatalytic technique was employed utilizing mesoporous GaO-TiO nanocomposites for degrading imazapyr herbicide as a model pollutant molecule. Mesoporous GaO-TiO nanocomposites with varied GaO contents (0-5wt%) were synthesized through sol-gel process.

When laboratory tests can mislead even when they appear plausible.

A laboratory test has three phases, pre-analytical, analytical and post-analytical. The purpose of this review is to highlight an issue concerning the analytical phase of one of the most widely deployed groups of diagnostic tests using a common technology - namely immunoassay.Immunoassay entails an inherently high error rate and, therefore, has the potential for inaccurate and misleading results susceptible to misinterpretation and/or diagnostic misapplication by clinicians.

The insulin autoimmune syndrome (IAS) as a cause of hypoglycaemia: an update on the pathophysiology, biochemical investigations and diagnosis.

Insulin autoimmune syndrome (IAS) is considered to be very rare in Caucasians. Understanding its pathophysiology is paramount in (a) appreciating its potential impact on analyses of pancreatic hormones and (b) explaining its highly variable clinical manifestations in non-diabetic, non-acutely ill patients with indeterminate hypoglycaemia. The underlying aetiology of IAS is the presence of variable affinity/avidity endogenous insulin antibodies in significant amounts.

Synthesis of mesoporous sulfur-doped Ta2O5 nanocomposites and their photocatalytic activities.

Mesoporous sulfur (S)-doped Ta2O5 nanocomposites have been synthesized for the first time through the sol-gel reaction of tantalum chloride and thiourea in the presence of a F127 triblock copolymer as structure directing agent. The as-formed mesophase S-doped Ta2O5 hybrid gels were calcined at 700°C for 4h to obtain mesoporous S-Ta2O5 nanocomposites. The experimental results indicated that the surface area of the S-doped Ta2O5 was up to 50m(2)g(-1) and the pore diameter was controllable in the range of 3-7.