Visible light-driven triazine-based S-scheme COF-TpTt@BiOBr heterojunction with oxygen vacancy for enhanced photocatalytic pollutants removal and hydrogen production.

S-scheme heterojunction is an effective tactic to improve photocatalytic property. But few studies on constructing heterojunction with BiOBr and covalent organic frameworks (COFs) are available. Herein, a novel series of COF-TpTt@BiOBr S-scheme heterojunctions with oxygen vacancies (OVs) were constructed via solvothermal method.

Coupling Cu Coordination Polymers with CdS Forming an S-Scheme Heterojunction for Rapid Charge Separation and High Photocatalytic Activity.

Energy and the environment are significant impacting factors for the future development of humankind. In order to improve the corrosion resistance of CdS and decrease the recombination of photogenerated carriers, a novel Cu-CPs@CdS heterojunction with high efficiency mesopores was constructed by a simple hydrothermal method. The effective interfacial contact formation between nano-CdS and Cu-CPs promotes the transfer of photogenerated carriers while exhibiting a high spatial separation rate of charges.

Constructing TiO@MOF S-scheme heterojunctions for enhanced photocatalytic degradation of antibiotics and Cr(VI) photoreduction.

The residue of antibiotics and various pollutants has led to an urgent issue in environmental pollution control. In this study, we constructed an S-scheme P-TiO@Zn-MOF heterojunction by self-assembling phosphonate-based MOFs on mesoporous phosphate-TiO beads. Compared to monomers, the P-TiO@Zn-MOF heterojunction exhibits significantly higher photocatalytic activity for the photo-oxidative degradation of ciprofloxacin (97.

Flame retardant, high mechanical strength, transparent and water-resistant epoxy composites modified with chitosan derivatives.

Adding bio-based flame retardants to improve the flame retardancy of polymer materials without sacrificing other properties is a great challenge. Herein, a novel flame-retardant CS-DOPA was prepared from chitosan and 10-hydroxy-9,10-dihydro-9-oza-10-phosphaphenanthrene-10-oxide by acid-base neutralization reaction and fully characterized. The 4 wt% CS-DOPA modified EP showed good flame retardancy in both gaseous and condensed phase.

A novel molecularly expanded covalent triazine framework heterojunction with significantly enhanced molecular oxygen activation and photocatalysis performance under visible light.

The activation capacity of molecular oxygen is an important indicator to evaluate the photocatalytic efficiency of photocatalysts. In this paper, WS nanosheet was deposited on hyper-crosslinked CTF-1-G (obtained by molecular expansion from covalent triazine framework CTF-1) to form a C-GW heterojunction, which promoted the photodegradation of pollutants and the activation of molecular oxygen. This novel C-GW heterojunction exhibited excellent degradation property for organic pollutants (tetracycline (TC), rhodamine B (RhB)) and activating molecular oxygen under visible light irradiation.

Study of Salidroside and Its Inflammation Targeting Emulsion Gel for Wound Repair.

Salidroside has been widely used in anti-tumor, cardiovascular, and cerebrovascular protection. However, there are few reports of its use for wound repair. Herein, salidroside inflammation-targeted emulsion gel and non-targeted emulsion gel were developed for wound repair.

MOF-derived CdS/CoO S-type heterojunctions for improving the efficiency of photocatalytic evolution.

The aggravating extreme climate changes and environmental pollution problems have stimulated the exploration of green alternatives to conventional fossil fuels and green environmental treatments. Photocatalysis is recognized as an outstanding green tool for solving the energy crisis and environmental rehabilitation issues. Restricted by the high cost of precious metals, researchers expect to obtain low-cost, efficient and stable photocatalysts.

Construction of a direct Z-scheme CeO/UiO-66-NH heterojunction for boosting photocatalytic organic pollutant degradation and H evolution performance.

In this study, hollow CeO nanospheres were grown on UIO-66-NH nanosheets to form a novel CeO/UiO-66-NH (abbreviation, CU) Z-scheme heterojunction photocatalyst by calcination and hydrothermal method for hydrogen production and photocatalytic degradation of organic pollutants. Under visible light, the H generation rate of the CU composite was 5662.1 μmol g h, which was 22 and 7 fold than that of pure CeO and pure UiO-66-NH, respectively.

Pharmacodynamics of Dracorhodin Perchlorate and Its Inflammation-Targeting Emulsion Gel for Wound Healing.

The mechanism of dracorhodin perchlorate for the repair of rat skin wounds was investigated. In order to screen a more favorable drug delivery system for wound repair, the therapeutic effect of dracorhodin perchlorate inflammation-targeted emulsion gel was compared with that of non-targeted emulsion gel on rat wounds. Compared with non-targeted emulsion gels, inflammation-targeted emulsion gels had a better transdermal penetration and lower potentials (-51.

Enhanced photocatalytic performance over PANI/NH-MIL-101(Fe) with tight interfacial contact.

Constructing a suitable heterojunction structure while maintaining a tight interface to promote the separation of photogenerated electrons is of great significance for improving the photocatalytic activity. In this paper, a new PANI/NH-MIL-101(Fe) II-scheme heterojunction was prepared by a hydrothermal method. PANI with a porous structure was firstly obtained by the template method, and then PANI fragments were loaded on the surface of NH-MIL-101(Fe) crystals under hydrothermal conditions to obtain a PANI/NH-MIL-101(Fe) photocatalyst.

Synthesis of Layered Double Hydroxides with Phosphate Tailings and Its Effect on Flame Retardancy of Epoxy Resin.

In this work, phosphate tailings (PTs) were used as raw materials for the preparation of Ca-Mg-Al layered double hydroxides (LDHs-1) and Ca-Mg-Al-Fe layered double hydroxides (LDHs-2) by co-precipitation method. The as-prepared samples were characterized by FT-IR, SEM, XRD, and XPS and applied as a flame retardant to improve the fire safety of epoxy resin (EP). The results showed that both LDHs-1 and LDHs-2 exhibited layered structure and high crystallinity.

Preparation of a Novel Organic Phosphonic Acid Intercalated Phosphate Tailings Based Hydrotalcite and Its Application in Enhancing Fire Safety for Epoxy Resin.

Phosphate tailings (PTs) are solid waste, which is produced by phosphate flotation. In this work, PTs were used as raw materials for the preparation of diethylenetriamine pentamethronic acid (DTPMP) intercalated trimetal (Ca-Mg-Al) layered double hydroxides (TM-DTPMP LDHs) by co-precipitation method. TM-DTPMP LDHs were characterized by X-ray diffraction, fourier-transform infrared spectroscopy, scanning electron microscopy, differential thermal gravimetric analysis, X-ray photoelectron spectroscopy and applied as a flame retardant to improve the fire safety of epoxy resin (EP).

Green Conversion of Saponins to Diosgenin in an Alcoholysis System Catalyzed by Solid Acid Derived from Phosphorus Tailings.

This work proposed to prepare solid acid from phosphorus tailings and successfully convert Dioscorea zingiberensis C.H. Wright (DZW) into diosgenin from the perspective of solid waste resource reuse and clean production.

Water-mediated proton conduction in Ni(ii) and Co(ii) benzenetriphosphonates.

Two novel transition metal compounds, [Ni(4,4'-bipyH)2(H2O)4]·2(H4bmt)·9H2O (1) and [Co(4,4'-bipy)(H2O)4][Co(4,4'-bipyH)2(H2O)4]·2(H3bmt)·6H2O (2), have been synthesized. They possess continuous H-bond networks and high-density [PO3] groups, which give conductivity values in the order of 10-3 S cm-1 in a wide temperature range and 98% relative humidity.

Synthesis, crystal structures and magnetic properties of a series of chair-like heterometallic [FeLn] (Ln = Gd, Dy, Ho, and Er) complexes with mixed organic ligands.

Four chair-like hexanuclear Fe-Ln complexes containing mixed organic ligands, namely, [FeLn{(py)CO}(pdm)(NO)(HO)Cl]·xCHCN·yHO (Ln = Gd (1, x = 1, y = 0), Dy (2, x = 1, y = 1), Ho (3, x = 0, y = 2), and Er (4, x = 1, y = 3); (py)COH = the gem-diol form of di-2-pyridyl ketone and pdmH = 2,6-pyridinedimethanol) have been obtained by employing di-2-pyridyl ketone and 2,6-pyridinedimethanol reacting with FeCl and Ln(NO) in MeCN. The structures of 1-4 are similar to each other except for the number of lattice solvent molecules. Four Fe and two Ln in these complexes comprise a chair-like core with the "body" constructed by four Fe ions and the "end" constructed by two Ln ions.

Regulation of magnetic relaxation behavior by replacing 3d transition metal ions in [MDy] complexes containing two different organic chelating ligands.

Four tetranuclear 3d-4f complexes, namely [FeLn(L)(teaH)(Cl)](NO)·4CHCN (HL = N1,N3-bis(3-methoxysalicylidene)diethylenetriamine, teaH = triethanolamine, Ln = Dy for 1 and Ln = Gd for 1') and [CoLn(L)(pdm)(CHCOO)(CHOH)](NO)·xCHOH·yHO (pdmH = 2,6-pyridinedimethanol, Ln = Dy, x = 5 and y = 2.5 for 2 and Ln = Gd, x = 6 and y = 1.5 for 2'), have been reported.

A water stable layered Tb(iii) polycarboxylate with high proton conductivity over 10 S cm in a wide temperature range.

An unprecedented Tb(iii) polycarboxylate, {[Tb4(TTHA)2(H2O)4]·7H2O}n (1), has been synthesized. It possesses an efficient proton transfer pathway formed by water molecules and carboxyl groups, which exhibits proton conductivity over 10-2 S cm-1 at 295-358 K and 98% relative humidity.

Two novel organic phosphorous-based MOFs: synthesis, characterization and photocatalytic properties.

Two novel metal-organic framework (MOF) photocatalysts with different structures [(Cu(H2L)(4,4'-bipy)0.5(H2O)] (1) and [Co(C14H14O6.5P2)(4,4'-bipy)0.

Preparation of magnetic polyimide@ Mg-Fe layered double hydroxides core-shell composite for effective removal of various organic contaminants from aqueous solution.

In this work, a novel core-shell structured magnetic polyimide@layered double oxides (LDO) composites coating a porous polyimide (PI)-coated FeO magnetic core and layered double hydroxide (LDH) has been successfully synthesized by solve-thermal synthesis and co-precipitation process. The magnetic PI@LDO composites were characterized by scanning and transmission electron microscopy (SEM and TEM), X-ray diffraction (XRD), thermogravimetry analysis (TGA) and magnetic properties analysis. The composite materials displayed core-shell structure with flower-like morphology.

Single molecule magnet behaviors of ZnLn (Ln = Dy, Tb) complexes with multidentate organic ligands formed by absorption of CO in air through in situ reactions.

In this work, we report the syntheses, crystal structures and magnetic properties of three novel Zn-Ln mixed metal complexes, namely [Zn4Dy2(L1)2(L2)2(N3)2]Cl2·2H2O (1), [Zn4Tb2(L1)2(L2)2(Cl)2][ZnN3Cl3]·2H2O (2), and [Zn4Gd2(L1)2(L2)2(Cl)2][ZnN3Cl3]·2H2O (3), in which L12- and L23- were formed from the ligand L [L = N1,N3-bis(3-methoxysalicylidene)diethylenetriamine] through in situ reactions. Interestingly, carbon dioxide in air was absorbed in the process of forming carbamate ligand L23-; this can be ascribed to the insertion of CO2 into M-N amide bonds. Moreover, 1 and 2 represent the first series of 3d-4f SMMs containing carbamate ligands by fixation of CO2 in air.

Metal organic frameworks-assisted fabrication of CuO/CuO for enhanced selective catalytic reduction of NO by NH at low temperatures.

Porous CuO/CuO heterostructure was successfully synthesized through a metal organic frameworks (MOFs)-assisted template method. Tunable production of pure phase CuO and CuO could be achieved by regulating the coordination environment of copper. The copper oxides inherited the polyhedral morphology from the Cu MOFs and possessed higher surface area and larger pore volume.

Two pure MOF-photocatalysts readily prepared for the degradation of methylene blue dye under visible light.

Two 3D metal-organic frameworks (MOFs) with different structures, [Cu(4,4'-bipy)Cl] (1) and [Co(4,4'-bipy)·(HCOO)] (2), were synthesized by means of a hydrothermal method using a typical ligand (4,4'-bipyridine), and characterized by elemental analyses, thermal analyses and single crystal X-ray diffraction. As MOF materials, the two complexes showed active performance for the photodegradation of methylene blue (MB) dye under visible light. MB degradation over the two MOF-based photocatalysts follows first-order kinetics.

Pyridine-ring containing twisttetraazaacene: Synthesis, physical properties, crystal structure and picric acid sensing.

Novel pyridine-ring containing twisttetraazaacene 9,14-diphenylpyreno[4,5-g]isoquinoline (1) and its full-carbon derivative 9,14-diphenyldibenzo[de,qr]tetracene (2) have been synthesized and fully characterized. Studies showed that compound 1 could identify picric acid (PA) over other common nitro compounds with high selectivity and sensitivity. Upon the addition of PA, the emission peak of compound 1 in CHCN was red shifted from 447 to 555nm with a fluorescence quenching efficiency as high as 95%, the detection limit was calculated to be 2.

Two unprecedented decanuclear heterometallic [MnMnLn] (Ln = Dy, Tb) complexes displaying relaxation of magnetization.

We report the syntheses, crystal structures, and magnetic properties of two 3d-4f heterometallic compounds; namely, [MnLnO(OH){(py)CO}(teaH)(CHCOO)]·6CHCN·2HO (Ln = Dy (1), Tb (2); (py)COH = the gem-diol form of di-2-pyridyl ketone, teaH = triethanolamine). Both compounds were prepared by the reaction of Mn(OAc)·4HO, Ln(NO)·5HO (Ln = Dy and Tb) with the ligands di-2-pyridyl ketone and triethanolamine in MeCN, and they crystallize in the monoclinic space group C2/c. [MnLn] complexes have not been reported before, and the metallic cores of both complexes were unprecedented.

A facile synthesis of 5-amino-[1,2,3]triazolo[5,1-a]isoquinoline derivatives through copper-catalyzed cascade reactions.

A copper-catalyzed cascade method was developed for the synthesis of [1,2,3]triazolo[5,1-a]isoquinoline derivatives. The N-fused heterocycles were obtained in good to excellent yields under mild conditions, which provided a new strategy for the preparation of this highly functionalized building block.