Highly hydrophilic and surface defect-rich MOF-74-PA15 obtained by phytic acid etching as a robust catalyst for the oxygen evolution reaction.

Water splitting is an energy conversion process of vital importance. The oxygen evolution reaction (OER), as the half-reaction of water splitting, has very slow kinetics due to the complex quaternary electron transfer process involved, which greatly impedes the efficiency of energy conversion. The rational construction and modification of metal-organic frameworks (MOFs) offer a novel alternative for developing efficient OER electrocatalysts.

The Effect of Component Defects on the Performance of Perovskite Devices and the Low-Cost Preparation of High-Purity PbI.

The efficiency and reproducibility of perovskite solar cells (PSCs) are significantly influenced by the purity of lead iodide (PbI) in the raw materials used. Pb(OH)I has been identified as the primary impurity generated from PbI in water-based synthesis. Consequently, a comprehensive investigation into the impact of Pb(OH)I impurities on film and device performance is essential.

A bimetallic NiFe MOF with ultra-thin two-dimensional nanosheet structure effectively accelerates oxygen evolution reaction.

To address the shortage of fossil energy, the development of affordable and efficient non-precious metal catalysts for oxygen evolution reaction (OER) from electrocatalytic water splitting is still a crucial challenge. Herein, the bimetallic NiFe metal-organic frameworks (MOFs) are synthesized by hydrothermal and electro-deposition. Benefiting from the synergistic effect of Fe and Ni, the catalyst demonstrates extraordinary activity, which exhibits favorable OER catalytic activity in 1 M KOH solution with an overpotential of 206 mV at 10 mA cm.

Ultrathin Fe-MOFs modified by FeS for highly efficient oxygen evolution reaction.

Developing efficient and economical catalysts is essential for water splitting. The application of MOF catalysts in water splitting is limited by poor conductivity; however, the introduction of conductive TMS could enhance their activity. Herein, novel composite FeS/Fe-MOF/NF-2 was constructed by introducing dendritic FeS onto the surface of a 2D ultrathin Fe-MOF.

Construction of core-shell CoSe/ZnInS heterostructures for efficient visible-light-driven photocatalytic hydrogen evolution.

The use of photocatalysts based on semiconductor heterostructures for hydrogen evolution is a prospective tactic for converting solar energy. Herein, visible-light-responsive three-dimensional core-shell CoSe/ZnInS heterostructures were successfully fabricated growth of ZnInS ultrathin nanosheets on spherical CoSe. Without any noble metal co-catalysts, the as-prepared CoSe/ZnInS composite achieved attractive photocatalytic hydrogen evolution activity under visible light illumination.

Enhancing charge transfer in a WO/g-CN heterostructure band structure engineering for effective SERS detection and flexible substrate applications.

Chemical mechanism (CM)-related surface-enhanced Raman spectroscopy (SERS) has received tremendous interest due to its exceptional stability and excellent uniformity. Nevertheless, there remains a demand for ingenious methodologies for promoting effective charge transfer (CT) to improve SERS sensitivity further. Herein, a band structure engineered WO/g-CN heterostructure (WCN) was first employed as a CM-based SERS substrate with remarkable enhancement and sensitivity.

High-performance SERS chips for sensitive identification and detection of antibiotic residues with self-assembled hollow Ag octahedra.

High-performance SERS chips self-assembled hollow Ag octahedra on PDMS were employed to achieve the sensitive identification and detection of antibiotic residues. The developed SERS chips were successfully applied in the detection of ciprofloxacin (CIP), amoxicillin (AMX) and cefazolin (CZL) in wastewater and tap water samples, as well as enrofloxacin (ENR) in milk, demonstrating the sensitive determination of antibiotics in the real environment. From this perspective, these SERS chips are expected to expand the on spot sensitive detection and identification field of antibiotic residues.

MnOH-modified CoMoP/NF nanosheet arrays as hydrogen evolution reaction and oxygen evolution reaction bifunctional catalysts under alkaline conditions.

It is widely acknowledged that interface engineering strategies can significantly enhance the activity of catalysts. In this study, we developed a CoMoP nanoarray directly grown on a nickel foam (NF) substrate, with the interface structure formed through the electrodeposition of MnOH. The resulting heterostructure MnOH/CoMoP/NF exhibited remarkable hydrogen evolution reaction (HER) activity, achieving overpotentials as low as 61 and 138 mV at 10 and 100 mA cm, respectively.

2D iron/cobalt metal-organic frameworks with an extended ligand for efficient oxygen evolution reaction.

The design of an efficient OER catalyst is significant for water splitting. Metal-organic frameworks (MOFs) are emerging as promising electrocatalysts due to their diversity of structure and tunability of function. In this paper, 2D FeCo-MOF/NF with an extended ligand (biphenyl-4,4'-dicarboxylic acid, BPDC) is constructed on nickel foam by a solvothermal method.

Methylthio-functionalized UiO-66 to promote the electron-hole separation of ZnInS for boosting hydrogen evolution under visible light illumination.

Solar-driven water splitting offers a leading-edge approach to storing abundant and intermittent solar energy and producing hydrogen as a clean and sustainable energy carrier. More importantly, constructing well-designed photocatalysts is a promising approach to develop clean hydrogen energy. In this paper, flower spherical UiO-66-(SCH)/ZnInS (UiOSC/ZIS) photocatalysts are successfully synthesized by a simple two-step hydrothermal method, and they exhibit high hydrogen production activity in light-driven water splitting.

Robust FeCoP nanoparticles grown on a rGO-coated Ni foam as an efficient oxygen evolution catalyst for excellent alkaline and seawater electrolysis.

Electrochemical water splitting is a potential green hydrogen energy generation technique. With the shortage of fresh water, abundant seawater resources should be developed as the main raw material for water electrolysis. However, since the precipitation reaction of chloride ions in seawater will compete with the oxygen evolution reaction (OER) and corrode the catalyst, seawater electrolysis is restricted by the decrease in activity, low stability, and selectivity.

Occurrence and removal of conventional pollutants, estrogenicities, and fecal coliform in village sewage treatment plants along the Yangtze River, China.

The present study investigated the occurrence and removal efficiency of some conventional pollutants, estrogenic effects, and fecal coliform in influents and/or effluents of village sewage treatment plants (STPs) in the upper, middle, and lower reaches of the Yangtze River Basin. The water quality of sewage from the village STPs showed significant seasonal and spatial variability. The removal rates of conventional pollutants by the village STPs were mostly lower than urban STPs, thereby resulting in that the water quality compliance rate of the effluents was only 33.

Self-supported CoMoO/NiFe-LDH core-shell nanorods grown on nickel foam for enhanced electrocatalysis of oxygen evolution.

Developing high-performance catalysts is an effective strategy for speeding up the oxygen evolution reaction (OER) and increasing production efficiency. Here, a core-shell electrocatalyst consisting of CoMoO nanorods grown on nickel foam substrate covered by nickel-iron layered double hydroxide (NiFe-LDH) electrodeposition was demonstrated (CoMoO/NiFe-LDH@NF). Experimental investigations revealed that self-supporting and binder-free electrodes ensured that the catalysts exposed an abundance of active sites, faster electron transfer, and excellent long-cycle stability.

NiP NPs loaded on methylthio-functionalized UiO-66 for boosting visible-light-driven photocatalytic H production.

The UiO-66 family shows promising photocatalytic prospects in water splitting for hydrogen evolution under visible light irradiation due to its suitable band gap and adequate active sites. In this work, novel NiP/UiO-66-(SCH) composites were prepared by a simple solvothermal method. These as-synthesized samples were fully characterized by XRD, SEM, TEM, HRTEM, EDS, and XPS methods.

Directional Damping of Plasmons at Metal-Semiconductor Interfaces.

ConspectusOver the past decade, it has been shown that surface plasmons can enhance photoelectric conversion in photovoltaics, photocatalysis, and other optoelectronic applications through their plasmonic absorption and damping processes. However, plasmonically enhanced devices have yet to routinely match or exceed the efficiencies of traditional semiconductor devices. The effect of plasmonic losses dissipates the absorbed photoenergy mostly into heat and that has hampered the realization of superior next-generation plasmonic optoelectronic devices.

In-Situ Anchoring Pb-Free Cs Bi Br @BiOBr Quantum Dots on NH -Rich Silica with Enhanced Blue Emission and Satisfactory Stability for Photocatalytic Toluene Oxidation.

All-inorganic metal halide perovskite quantum dots (QDs) have attracted attention from researchers with their fascinating optoelectronic properties. However, blue-emitting perovskite QDs typically have low photoluminescence quantum yield (PLQY). For potential commercial applications, it is preferable to replace Pb with an element having low toxicity.

Lead-Free Cs AgSbCl Double Perovskite Nanocrystals for Effective Visible-Light Photocatalytic C-C Coupling Reactions.

Lead halide perovskite nanocrystals (NCs) have been regarded as a promising potential photocatalyst, owing to their high molar extinction coefficient, low economic cost, adjustable light absorption range, and ample surface active sites. However, the toxicity of lead and its inherent instability in water and polar solvents could hinder their wide application in the field of photocatalysis. Herein, with α-alkylation of aldehydes as a model reaction, C-C bond-forming is demonstrated in high yield by using lead-free double perovskite Cs AgSbCl NCs under visible light irradiation.

Amorphous NiCoB-coupled MAPbI for efficient photocatalytic hydrogen evolution.

It was thought that the organic-inorganic hybrid perovskite MAPbI could be used to collect visible light for the photocatalytic hydrogen evolution reaction (HER). However, its ability to generate H is limited. Herein, we synthesized amorphous NiCoB through a redox method and coupled it with MAPbI to form the NiCoB/MAPbI composite photocatalyst by electrostatic self-assembly.

MoC/MAPbI hybrid composites for efficient photocatalytic hydrogen evolution.

Metal halide perovskites, such as iodine methylamine lead (MAPbI), have received extensive attention in the field of photocatalytic decomposition of HI for hydrogen evolution, due to their excellent photoelectric properties. In this paper, a new MAPbI-based composite, MoC/MAPbI, was synthesized. The results show that 15 wt% MoC/MAPbI has the best hydrogen production performance (38.

All-inorganic lead-free metal halide perovskite quantum dots: progress and prospects.

Lead halide perovskite quantum dots have drawn worldwide attention due to their quantum confinement effect and excellent optical gain properties. It is worth noting that due to the toxicity of lead ions and the inherent instability of organic groups, research on all-inorganic lead-free metal halide perovskite quantum dots (ILFHPQDs) has become a hot spot in recent years. This paper summarizes the latest research progress of ILFHPQDs, analyzes the sources and limitations affecting the performance of ILFHPQDs, and provides the improvement methods.

Cu-Sb-S Ternary Semiconductor Nanoparticle Plasmonics.

Semiconductor plasmonics is a recently emerging field that expands the chemical and physical bandwidth of the hitherto well-established noble metallic nanoparticles. Achieving tunable plasmonics from colloidal semiconductor nanocrystals has drawn enormous interest and is promising for plasmon-related applications. However, realizing this goal of tunable semiconductor nanocrystals is currently still a synthetic challenge.

Chiral Proline-Decorated Bifunctional Pd@NH-UiO-66 Catalysts for Efficient Sequential Suzuki Coupling/Asymmetric Aldol Reactions.

The design and development of site-isolating and multifunctional catalysts for multistep sequential reactions at the molecular level is a significant challenge. Herein, we first report bifunctional metal NPs@chiral MOFs catalysts for asymmetric sequential reactions. Pd nanoparticles and chiral proline were successfully added to NH-UiO-66 to construct two chiral bifunctional catalysts, in which active Pd nanoparticles were encapsulated into the frameworks via the "bottle-around-ship" method, and chiral proline was introduced into NH-UiO-66 by coordination to zirconium nodes and postsynthetic modification (PSM) of the organic linkers.

MoS-Stratified CdS-CuS Core-Shell Nanorods for Highly Efficient Photocatalytic Hydrogen Production.

Heterojunction photocatalysts are widely adopted for efficient water splitting, but ion migration can seriously threaten the stability of heterojunctions, as with the well-known low stability of CdS-CuS due to intrinsic Cu ion migration. Here, we utilize Cu migration to design a stratified CdS-CuS/MoS photocatalyst, in which Cu@MoS (Cu-intercalated within the MoS basal plane) is created by Cu migration and intercalation to the adjacent MoS surface. The epitaxial vertical growth of the Cu@MoS nanosheets on the surface of one-dimensional core-shell CdS-CuS nanorods forms catalytic and protective layers to simultaneously enhance catalytic activity and stability.