Agrowaste-carbon and carbon-based nanocomposites for endocrine disruptive cationic dyes removal: A critical review.

Dyes are considered to be pollutants that pose a considerable worldwide health risk, as they have been discovered as agents that affect the endocrine system. Adsorption is the most commonly used method for removing different substances since it is sustainable, flexible, affordable, and easy to use. Researchers have investigated the usage of agro-waste-based adsorbents that are ecologically friendly for the process of adsorption.

Defects in MOFs for Photocatalytic Water Reduction to Hydrogen Generation: From Fundamental Understanding to State-of-Art Materials.

Metal-organic frameworks (MOFs) are highly studied for solar H production from HO due to their abundant active sites and open pore channels. Titanium (Ti) and Zirconium (Zr) MOFs are particularly noted for their stability and optoelectronic properties, resembling conventional metal oxide semiconductors. These MOFs allow molecular-level tuning to alter optoelectronic properties, creating opportunities to enhance catalytic activity.

Atomically Tailored Zn-ZIF-8 via RuNi Nanoalloy Replacement for Improved Photocatalytic H Evolution.

In this study, we developed a solid-state atomic replacement method for metal catalysts, enabling the exchange of metal atoms between single atoms and nanoalloys to create new combinations of nanoalloys and single atoms. We observed that partial metal interchange occurred between the RuNi nanoalloy and Zn from the zeolitic imidazolate framework-8 (ZIF-8) on a carbon-nitrogen framework (CNF) at a high temperature of 900 °C, leading to the creation of RuZn nanoparticles and single nickel atoms (Ni-CN). Extended X-ray absorption fine structure (EXAFS) and X-ray absorption near edge structure (XANES) analyses revealed that Ni is atomically dispersed within (RuZn)/Ni-CN.

A MOF-derived CuO/TiO photocatalyst for methanol production from CO reduction in an AI-assisted continuous flow reactor.

A CuO/TiO hybrid heterostructure was successfully engineered from copper metal-organic frameworks (MOFs) using a two-step process involving solvothermal synthesis and calcination. By precisely controlling the CuO loading, this synergistic composite exhibited exceptional performance in photocatalytic CO reduction. Notably, AI-assisted continuous flow experimentation achieved a record-breaking methanol production rate of 2.

Emerging ZnO Semiconductors for Photocatalytic CO Reduction to Methanol.

Carbon recycling is poised to emerge as a prominent trend for mitigating severe climate change and meeting the rising demand for energy. Converting carbon dioxide (CO) into green energy and valuable feedstocks through photocatalytic CO reduction (PCCR) offers a promising solution to global warming and energy needs. Among all semiconductors, zinc oxide (ZnO) has garnered considerable interest due to its ecofriendly nature, biocompatibility, abundance, exceptional semiconducting and optical properties, cost-effectiveness, easy synthesis, and durability.

InVO-Decorated TiC MXene for Efficient Photocatalytic Hydrogen Evolution.

The generation of hydrogen through photocatalysis is a fascinating technology for addressing environmental concerns and the energy crisis. Nevertheless, the quest for cost-effective, stable, and efficient photocatalysts in the realm of energy conversion remains a significant challenge. Herein, we designed novel InVO/TiC MXene (IVTC) heterostructures by employing acid etching to produce TiC MXene with an accordion-like morphology, using the hydrothermal technique for the production of orthorhombic InVO nanoparticles (NPs), and integrating them through a self-assembly approach.

Sputtering thin films: Materials, applications, challenges and future directions.

Sputtering is an effective technique for producing ultrathin films with diverse applications. The review begins by providing an in-depth overview of the background, introducing the early development of sputtering and its principles. Consequently, progress in advancements made in recent decades highlights the renaissance of sputtering as a powerful technology for creating thin films with varied compositions, structures, and properties.

Zinc oxide decorated plantain peel activated carbon for adsorption of cationic malachite green dye: Mechanistic, kinetics and thermodynamics modeling.

Reports have shown that malachite green (MG) dye causes various hormonal disruptions and health hazards, hence, its removal from water has become a top priority. In this work, zinc oxide decorated plantain peels activated carbon (ZnO@PPAC) was developed via a hydrothermal approach. Physicochemical characterization of the ZnO@PPAC nanocomposite with a 205.

Ultrasonic-assisted synthesis of CaCuTiO/reduced graphene oxide composites for enhanced photocatalytic degradation of pharmaceutical products: Ibuprofen and Ciprofloxacin.

The objective of this research is to create a highly effective approach for eliminating pollutants from the environment through the process of photocatalytic degradation. The study centers around the production of composites consisting of CaCuTiO (CCTO) and reduced graphene oxide (rGO) using an ultrasonic-assisted method, with a focus on their capacity to degrade ibuprofen (IBF) and ciprofloxacin (CIP) via photodegradation. The impact of rGO on the structure, morphology, and optical properties of CCTO was inspected using XRD, FTIR, Raman, FESEM, XPS, BET, and UV-Vis.

CA19-9 and CEA biosensors in pancreatic cancer.

Cancer is a complex pathophysiological condition causing millions of deaths each year. Early diagnosis is essential especially for pancreatic cancer. Existing diagnostic tools rely on circulating biomarkers such as Carbohydrate Antigen 19-9 (CA19-9) and Carcinoembryonic Antigen (CEA).

Single-Atom Ru Catalyst-Decorated CNF(ZnO) Nanocages for Efficient H Evolution and CHOH Production.

The presence of transition-metal single-atom catalysts effectively enhances the interaction between the substrate and reactant molecules, thus exhibiting extraordinary catalytic performance. In this work, we for the first time report a facile synthetic procedure for placing highly dispersed Ru single atoms on stable CNF(ZnO) nanocages. We unravel the atomistic nature of the Ru single atoms in CNF(ZnO)/Ru systems using advanced HAADF-STEM, HRTEM, and XANES analytical methods.

Modulated Ultrathin NiCo-LDH Nanosheet-Decorated Zr-Rich Defective NH-UiO-66 Nanostructure for Efficient Photocatalytic Hydrogen Evolution.

Defect engineering through modification of their surface linkage is found to be an effective pathway to escalate the solar energy conversion efficiency of metal-organic frameworks (MOFs). Herein, defect engineering using controlled decarboxylation on the NH-UiO-66 surface and integration of ultrathin NiCo-LDH nanosheets synergizes the hydrogen evolution reaction (HER) under a broad visible light regime. Diversified analytical methods including positron annihilation lifetime spectroscopy were employed to investigate the role of Zr-rich defects by analyzing the annihilation characteristics of positrons in NH-UiO-66, which provides a deep insight into the effects of structural defects on the electronic properties.

S-Scheme ZIF-67/CuFe-LDH Heterojunction for High-Performance Photocatalytic H Evolution and CO to MeOH Production.

The S-scheme heterojunction photocatalyst holds potential for better photocatalysis owing to its capacity to broaden the light absorption range, ease electron-hole separation, extend the charge carrier lifespan, and maximize the redox ability. In this study, we integrate zeolitic imidazolate frameworks (ZIFs-67) with the CuFe-LDH composite, offering a straightforward approach towards creating a novel hybrid nanostructure, enabling remarkable performance in both photocatalytic hydrogen (H) evolution and carbon dioxide (CO) to methanol (MeOH) conversion. The ZIF-67/CuFe-LDH photocatalyst exhibits an enhanced photocatalytic hydrogen evolution rate of 7.

Controlled Ni doping on a g-CN/CuWO photocatalyst for improved hydrogen evolution.

The development of a low-cost, environment-friendly and suitable semiconductor-based heterogeneous photocatalyst poses a great challenge towards extremely competent and substantial hydrogen evolution. A series of environment-friendly and proficient S-scheme Ni-doped CuWO nanocrystals supported on g-CN nanocomposites (Ni-CuWO/g-CN) were constructed to ameliorate the photocatalytic efficacy of pure g-CN and Ni-CuWO and their activity in H generation through photocatalytic water splitting was evaluated. The Ni-CuWO nanoparticles were synthesized through doping of Ni on wolframite CuWO crystals the chemical precipitation method.

Integrating Ultrasmall Pd NPs into Core-Shell Imidazolate Frameworks for Photocatalytic Hydrogen and MeOH Production.

The construction of photoactive units in the proximity of a stable framework support is one of the promising strategies for uplifting photocatalysis. In this work, the ultrasmall Pd NPs implanted onto core-shell (CS) metal organic frameworks (MOFs), i.e.

Anisotropic phenanthroline-based ruthenium polymers grafted on a titanium metal-organic framework for efficient photocatalytic hydrogen evolution.

Conjugated polymers and titanium-based metal-organic framework (Ti-MOF) photocatalysts have demonstrated promising features for visible-light-driven hydrogen production. We report herein a strategy of anisotropic phenanthroline-based ruthenium polymers (PPDARs) over Ti-MOF, a tunable platform for efficient visible-light-driven photocatalytic hydrogen evolution reaction (HER). Several analytical methods including X-ray absorption spectroscopy (XAS) revealed the judicious integration of the surface-active polymer over the Ti-MOF reinforcing the catalytic activity over the broad chemical space.

Recent advances in solution assisted synthesis of transition metal chalcogenides for photo-electrocatalytic hydrogen evolution.

Hydrogen evolution from water splitting is considered to be an important renewable clean energy source and alternative to fossil fuels for future energy sustainability. Photocatalytic and electrocatalytic water splitting is considered to be an effective method for the sustainable production of clean energy, H. This perspective especially emphasizes research advances in the solution-assisted synthesis of transition metal chalcogenides for both photo and electrocatalytic hydrogen evolution applications.

Preparation and characterization of rice husk activated carbon-supported zinc oxide nanocomposite (RHAC-ZnO-NC).

Indiscriminate waste discharge into water bodies has increased the level of water pollution via anthropogenic activities. Hence the need for the development of sustainable and environmentally benign nanomaterials has the potential for wastewater treatment. Rice husk activated carbon (RHAC) prepared by orthophosphoric acid activation was successfully loaded with freshly prepared ZnO nanoparticles by a bottom-up approach via precipitation method resulting in the RHAC-ZnO-NC.

1D alignment of Co(II) metalated porphyrin-napthalimide based self-assembled nanowires for photocatalytic hydrogen evolution.

The splitting of water into hydrogen and oxygen under visible light is an emerging phenomenon in green energy technology. Nevertheless, selecting an appropriate photocatalyst is rather significant to enhance hydrogen production on a large scale. In this context, organic photocatalysts have received considerable attention owing to their larger surface area, control in diffusion adsorption, nanostructures and electronic properties.

Hot injection-induced synthesis of ZnCdS-rGO/MoS heterostructures for efficient hydrogen production and CO photoreduction.

A highly efficient hybrid ZnCdS-rGO/MoS heterostructure is successfully synthesized through a hot injection method and control loading of rGO/MoS. The synergism provides an unprecedently high H-generation rate of 193.4 mmol H g h from water under full arc solar radiation and MeOH production (5.

Technoeconomic Investigation of Amine-Grafted Zeolites and Their Kinetics for CO Capture.

Solid adsorbents with precise surface structural chemistry and porosity are of immense interest to decode the structure-property relationships and maintain an energy-intensive path while achieving high activity and durability. In this work, we reported a series of amine-modified zeolites and their CO capture efficiencies. The amine impregnated molecular zeolite compounds were characterized and systematically investigated for CO adsorption capacity through thermogravimetric analysis for the occurrence of atmospheric pure CO gas at 75 °C with diethylenetriamine (DETA), ethylenediamine (EDA), monoethanolamine (MEA), and triethanolamine (TEA)-loaded zeolite 13X, 4A, and 5A adsorbents.

A combined experimental and theoretical approach revealing a direct mechanism for bifunctional water splitting on doped copper phosphide.

A cost-effective electrocatalyst should have a high dispersion of active atoms and a controllable surface structure to optimize activity. Additionally, bifunctional characteristics give an added benefit for the overall water splitting. Herein, we report the synthesis and fabrication of Fe-doped Cu/CuP supported on a flexible carbon cloth (CC) with a hydrophilic surface for efficient bifunctional water electrolysis under alkaline conditions.

Noble metal-free integrated UiO-66-PANI-CoO catalyst for visible-light-induced H production.

The discriminate etching chemistry (crystal engineering) of metal-organic frameworks (MOFs) offers promising opportunities for tailoring electron-hole separation, and charge-carrier utilization plays a central role in photocatalysis. Herein, the noble metal-free examples of polyaniline (PANI)-sensitized cobalt oxide functionalized perfect crystal UiO-66 and defective crystal UiO-66D photocatalysts were synthesized and evaluated for photocatalytic hydrogen generation from water under visible light irradiation. A viable route for the simple yet effective modification of UiO-66 by implanting PANI and cobalt oxide was demonstrated for the development of a series of UiO-66-based catalysts.

Polyethylenimine-Modified Zeolite 13X for CO Capture: Adsorption and Kinetic Studies.

A class of high molecular weight polyethylenimine (PEI)-modified zeolite 13X adsorbents were synthesized by varying the concentration of imines and screened for preliminary investigation of CO capture studies. The impregnated molecular amine zeolite composite was characterized and CO adsorption performance was investigated through TGA in the presence of atmospheric pure CO gas at 25, 50, 75, and 100 °C, respectively, using 20-80 wt % of PEI-loaded zeolite 13X adsorbents. This paper reports on the effects of temperature and amine (PEI) loading on CO adsorption capacity and estimated kinetic parameters through modeling of selected models which represent the reaction rate and diffusion rate models.

A Diuranyl(VI) Complex and Its Application in Electrocatalytic and Photocatalytic Hydrogen Evolution from Neutral Aqueous Medium.

The reaction of equimolar amounts of UO(OAc)·2HO, 2,6-diformyl-4-methylphenol, and -(hydroxyethyl)ethylenediamine in methanol affords a dinuclear -uranyl(VI) complex of the molecular formula [(UO)(μ-L)] (L = 2-formyl-4-methyl-6-((2-(2-oxidoethylamino)ethylimino)methyl)phenolate) in 65% yield. Detailed structural elucidation of the complex was performed by using single-crystal X-ray crystallographic and spectroscopic studies. In [(UO)(μ-L)], the metal centers are in edge-shared pentagonal-bipyramidal NO coordination spheres assembled by the two meridional ONNO-donor bridging L and two pairs of mutually trans oriented oxo groups.