Z-type heterojunction Pt/ZnCdS/CsPWO: Mitigating photocorrosion, leveraging photochromism, and efficient photocatalytic hydrogen evolution.

Catalysts are key components in the photocatalytic hydrogen precipitation process. However, commonly used catalysts such as sulfides, suffer from severe photogenerated carrier recombination and photocorrosion. To address this problem, in this work, CsPWO, polyoxometalates with reversible photochromic effect, and ZnCdS with photocorrosivity are constructed to form a Z-type heterojunction to facilitate the separation of photogenerated carriers, and at the same time synergize with the unique photochromic effect of CsPWO to mitigate photocorrosion.

One-pot hydrothermal synthesis of FeNbO microspheres for effective sonocatalysis.

FeNbO sonocatalysts were successfully synthesized by a simple hydrothermal route at pH values of 3, 5, 7, 9 and 11. The catalysts were characterized by XRD, XPS, TEM, SEM, N adsorption and DRS to analyse the effect of pH parameters on the physicochemical properties of the materials during hydrothermal synthesis. The sonocatalytic activity of FeNbO microspheres was evaluated by using acid orange 7 (AO7) as the simulated contaminant.

A facile synthesis of KPMoO/WO crystals for effective sonocatalytic performance.

Proper treatment of hazardous contaminants in the air, land, and water is crucial to environmental remediation. Sonocatalysis, by using ultrasound and suitable catalysts, has shown its potential in organic pollutant removal. In this work, KPMoO/WO sonocatalysts were fabricated a facile solution method at room temperature.

High-performance ZnInS/Ni(dmgH) for photocatalytic hydrogen evolution: Ion exchange construction, photocorrosion mitigation, and efficiency enhancement by photochromic effect.

In this work, a novel photocatalyst of ZnInS/Ni(dmgH) was designed by a simple chemical precipitation method and used to enhance hydrogen evolution under visible light irradiation. Along with vigorous discharges of hydrogen bubbles, an optimal rate of 36.3 mmol/g/h was reached under UV-Vis light for hydrogen evolution, nearly 4.

Nickel nanoparticle-activated MoS for efficient visible light photocatalytic hydrogen evolution.

Direct sunlight-induced water splitting for photocatalytic hydrogen evolution is the dream for an ultimate clean energy source. So far, typical photocatalysts require complicated synthetic processes and barely work without additives or electrolytes. Here, we report the realization of a hydrogen evolution strategy with a novel Ni-Ag-MoS ternary nanocatalyst under visible/sun light.

Facile synthetic routes for photocatalytic Pb(BTC)·HO coordination polymers.

Herein, we report on the successful synthesis of photocatalytic Pb(BTC)·HO polymers different methods including the surfactant-assisted hydrothermal method, ultrasonic method and reflux method. As the crystal growth is subjected to preparation atmosphere, changes in reaction conditions do not alter the crystal structures of products, but vary their morphology. High ultraviolet-light-driven photocatalytic abilities are attributed to the stable Pb(BTC)·HO, and the effective productions of h and ˙OH on the catalysts.

Effective oil-water mixture separation and photocatalytic dye decontamination through nickel-dimethylglyoxime microtubes coated superhydrophobic and superoleophilic films.

Oils and solvable organic pollutants in wastewater demand separations of the components along with efficient photocatalysis in water treatment. Herein, we report on a practical purification strategy by using the multifunctional nickel-dimethylglyoxime [Ni(DMG)] microtubes to separate the liquid mixture and degrade organic pollutants. The self-assembled [Ni(DMG)] tubes was synthesized by a facile co-precipitation method.

Synthesis of CdS-loaded (CuCHN)(PWO) for enhanced photocatalytic degradation of tetracycline under simulated solar light irradiation.

Largely discharged and excreted medical pollutants pose huge threats to ecosystems. However, typical photocatalysts, such as the Keggin-typed HPWO, can hardly degrade these hazards under visible-light due to their broad bandgap and catalytic disability. In this work, the visible light harvesting was enabled by combining macrocyclic coordination compound CuCHNClO with HPWO, and the resulting CuPW was loaded with CdS to reach robust catalytic ability to totally detoxify medicines.

Loading AgCl@Ag on phosphotungstic acid modified macrocyclic coordination compound: Z-scheme photocatalyst for persistent pollutant degradation and hydrogen evolution.

In this work, Z-scheme photocatalysts of (CuCHN)(PWO)/AgCl@Ag were designed and realized for effective removal of solvable and insolvable persistent organic pollutants and hydrogen evolution under simulated sunlight. The catalysts were synthesized via a simple hydrothermal-chemical co-precipitation method. Excellent photocatalytic abilities are demonstrated in degradations of persistent pollutant 2,4-Dinitrophenol (DNP) and tetracycline (TC) under simulated sunlight, as well as a high H production rate of 19.

Preparation of Graphene Oxide-Based Ink for Inkjet Printing.

Fabrication of graphene-based conductive circuits via inkjet printing processes would be very significant, but preparation of graphene inks which can be used in ordinary household inkjet printer is still a challenge. Graphene oxide (GO) is an important graphene derivative with good dispersion properties in water, because it has a lot of oxygen-containing functional groups. In this paper, the relationship between the concentration of GO and the viscosity and surface tension of its dispersion were studied first, GO were prepared by modified Hummers' method.

Metallic Contact between MoS and Ni via Au Nanoglue.

A critical factor for electronics based on inorganic layered crystals stems from the electrical contact mode between the semiconducting crystals and the metal counterparts in the electric circuit. Here, a materials tailoring strategy via nanocomposite decoration is carried out to reach metallic contact between MoS matrix and transition metal nanoparticles. Nickel nanoparticles (NiNPs) are successfully joined to the sides of a layered MoS crystal through gold nanobuffers, forming semiconducting and magnetic NiNPs@MoS complexes.

MnWO nanoparticles as advanced anodes for lithium-ion batteries: F-doped enhanced lithiation/delithiation reversibility and Li-storage properties.

F-Doped MnWO4 nano-particles were synthesized by a one-pot hydrothermal reaction. When evaluated as an electrode material for a Li ion battery, the F-doped nano-MnWO4 delivers a theoretical capacity of 708 mA h g-1 and a long cycle life, as demonstrated by more than 85% capacity retention when cycled for 150 cycles.

Enhanced Li Storage Stability Induced by Locating Sn in Metal-Organic Frameworks.

By locating elemental Sn in an open anionic framework, the particle cracking arising from huge volume expansion of Sn-based anode materials during lithiation/delithiation is alleviated, and the cycling stability is greatly improved. The Sn-based metal-organic framework anode material shows superior cyclic stability, with a capacity retention >92 % (after 200 cycles) and high lithium storage capacity (610 mAh g ).

SbVO nanoparticles synthesized via three facile one-pot methods: controllable morphologies and superhydrophobic coatings.

Inert colloidal SbVO with special morphologies is promising for practical superhydrophobic coatings. However, its conventional synthesis suffers from harsh preparation conditions, limiting the material applications. Herein, by using KVO·9HO as a novel vanadium source, SbVO nanoparticles were prepared through three different facile methods: hydrothermal method, reflux method and ultrasonic method.

Nanosecond laser coloration on stainless steel surface.

In this work, we present laser coloration on 304 stainless steel using nanosecond laser. Surface modifications are tuned by adjusting laser parameters of scanning speed, repetition rate, and pulse width. A comprehensive study of the physical mechanism leading to the appearance is presented.

Transition Metal Adsorbed-Doped ZnO Monolayer: 2D Dilute Magnetic Semiconductor, Magnetic Mechanism, and Beyond 2D.

As an improvement over organic or inorganic layered crystals, the synthetic monolayer ZnO(M) inherits semiconductivity and hostability from its bulk, yet it acts as a promising host for dilute magnetic semiconductors. Here, we report the electronic and magnetic properties of ZnO(M) doped with one 3d transition metal ion and simultaneously adsorbed with another 3d transition metal ion. Two sequences are studied, one where the dopant is fixed to Mn and the adsorbate is varied from Sc to Zn and another where the dopant and adsorbate are reversed.

Magnetic MoS2 pizzas and sandwiches with Mnn (n = 1-4) cluster toppings and fillings: A first-principles investigation.

The inorganic layered crystal (ILC) MoS2 in low dimensions is considered as one of the most promising and efficient semiconductors. To enable the magnetism and keep intrinsic crystal structures, we carried out a first-principles study of the magnetic and semiconductive monolayer MoS2 adsorbed with the Mnn (n = 1-4) clusters, and bilayer MoS2 intercalated with the same clusters. Geometric optimizations of the Mnn@MoS2 systems show the complexes prefer to have Mnn@MoS2(M) pizza and Mnn@MoS2(B) sandwich forms in the mono- and bi-layered cases, respectively.

High catalytic active palladium nanoparticles gradually discharged from multilayer films to promote Suzuki, Heck and Sonogashira cross coupling reactions.

To improve the catalytic activity and reduce the dosage of noble metal catalysts has attracted much more attention for organic synthetic chemists. We facilely fabricated multilayer films of PEI-(PdCl2/1)n through layer-by-layer (LBL) self-assembly method (PEI=polyethylenmine, 1=2,2',7,7'-tetra(4-pyridyl)-9,9'-spirobifluorene, psf). UV-vis spectroscopy, atomic force microscopy (AFM) and scanning electron microscopy (SEM) were used to monitor the growth of multilayer films.

Surfactant-Free and Controlled Synthesis of Hexagonal CeVO4 Nanoplates: Photocatalytic Activity and Superhydrophobic Property.

Nanomaterials with both superhydrophobic surface properties as well as photocatalytic activities could have important industrial applications. Herein, we synthesized CeVO4 nanocrystals with hexagonal nanoplate structures from the reaction of decavanadate (K6V10O28⋅9 H2O) and CeCl3⋅H2O precursors via a hydrothermal method. This synthetic route has four advantages: 1) the reaction condition is relatively mild, 2) it doesn't need surfactants or templates, 3) it requires no expensive equipment, and 4) products are of higher purity.

Trace amount Pd(ppm)-catalyzed Sonogashira, Heck and Suzuki cross-coupling reactions based on synergistic interaction with an asymmetric conjugated pyridinespirofluorene.

A multilayer film of (Pd(2+)/)10 was simply fabricated by Pd(ii) and 2-Br-2',7,7'-tri(4-pyridyl)-9,9'-spirobifluorene (, Br-tpsf) through a layer-by-layer self-assembly method. The film loaded on a quartz slide as a catalyst reservoir could gradually release high active catalytic species to promote Sonogashira, Heck and Suzuki cross-coupling reactions, with extremely low Pd-loading of 11.0 × 10(-6) mol% and high catalytic efficiency in EtOH-H2O system.

Photocatalytic degradation of organic dyes by La³⁺/Ce³⁺-H₃PW₁₂O₄₀ under different light irradiation.

New photocatalysts (La(3+)-H3PW12O40 and Ce(3+)-H3PW12O40) were prepared, and the degradation activity of these products was evaluated. These photocatalysts were synthesized by the hydrothermal method assisted by PEG-1000 from the reactions of LaCl3 or CeCl3 and phosphotungstic acid. The prepared catalysts were characterized by X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), scanning electron microscopy (SEM), ultraviolet-visible diffuse reflection spectroscopy (UV-vis) and thermal gravimetric analysis (TGA).

Facile fabrication of corrosion-resistant superhydrophobic and superoleophilic surfaces with MnWO(4):Dy(3+) microbouquets.

Superhydrophobic and superoleophilic MnWO4:Dy(3+) microbouquets were successfully fabricated via a facile hydrothermal process. The surface morphologies and chemical composition were investigated by scanning electron microscopy (SEM) and X-ray powder diffraction (XRD). The wettability of the as-synthesized MnWO4:Dy(3+) microbouquet film was studied by measuring the water contact angle (CA).

Synthesis and photocatalytic properties of ZnWO4 nanocrystals via a fast microwave-assisted method.

High crystallinity of ZnWO4 nanoparticles has been successfully synthesized via a highly effective and environmentally friendly microwave route by controlling the reaction time and temperature. The products were characterized by X-ray powder diffraction (XRD), transmission electron microscopy (TEM), and Fourier infrared spectrum (FT-IR). The crystallinity was enhanced with the increase of the reaction temperature and time.

Photocatalytic property of a keggin-type polyoxometalates-containing bilayer system for degradation organic dye model.

The photocatalytic activity composite films incorporating the Keggin-type polyoxometalates (POM) K6CoW12O40.-16H2O and K3PW12O40.-nH2O (MW12 (M=P, Co)) and [Cu(II)(1,8-dimethyl-1, 3, 6, 8, 10, 13-hexaazacycloteradecane)](2+)(L) have been prepared by the layer-by-layer (LbL) self-assembly method.

Bis[μ-2-(2-carboxyl-atophen-yl)acetato]-κO,O:O;κO:O,O-bis-[aqua-(1,10-phenanthroline-κN,N')nickel(II)].

The title compound, [Ni(2)(C(9)H(6)O(4))(2)(C(12)H(8)N(2))(2)(H(2)O)(2)], is isostructural with the Zn(II) analogue. Each Ni(II) atom is coordinated in a distorted octa-hedral geometry by three O atoms from two homophthalate anions, one aqua O atom and two 1,10-phenanthroline N atoms. The two Ni(II) atoms are linked by two bridging homophthalate dianions into a centrosymmetric dinuclear unit.