Carbon quantum dots-modified Z-scheme BiOCl/NiAl-LDH for significantly boosting photocatalytic CO reduction.

Photocatalytic reduction of CO to high-energy products is an effective way to utilize solar energy and mitigate the greenhouse effect. In this paper, a series of CQDs/BiOCl/NiAl-LDH (C/BOC/LDH) photocatalysts were prepared via a one-pot hydrothermal method, demonstrated excellent photocatalytic CO reduction performance. In the case of only water without any photosensitizer and sacrificial agent, the CO production rate on C/0.

Fabrication of a ternary NiS/ZnInS/g-CN photocatalyst with dual charge transfer channels towards efficient H evolution.

As a renewable green energy, hydrogen has received widespread attention due to its huge potential in solving energy shortages and environment pollution. In this paper, a one-step solvothermal method was applied to grow ultra-thin g-CN (UCN) nanosheets and NiS nanoparticles on the surface of ZnInS (ZIS). A ternary NiS/ZnInS/ultra-thin-g-CN composite material with dual high-speed charge transfer channels was constructed for the advancement of the photocatalytic H generation.

Fabrication of a dual S-scheme BiOI/g-CN/BiOCl heterojunction with enhanced visible-light-driven performance for phenol degradation.

S-scheme heterostructure can facilitate the separation of carriers while maintain outstanding redox capacity. A series of ternary BiOI/g-CN/BiOCl photocatalytic system was triumphantly synthesized via oil bath method in this work and used in photocatalytic degradation of phenol. The optimal TOC removal rate reached up to 93.

A NiS co-catalyst decorated ZnInS/g-CN type-II ball-flower-like nanosphere heterojunction for efficient photocatalytic hydrogen production.

Promoting the separation of photogenerated electron-hole pairs and enhancing the charge carrier transfer are critical in photocatalysis. In our work, a ball-flower-like NiS/ZnInS/g-CN photocatalyst fabricated by a hydrothermal method exhibited superior performance for photocatalytic water splitting. The optimized 2.

Recent Progress of Transition Metal Phosphides for Photocatalytic Hydrogen Evolution.

Photocatalytic hydrogen evolution can effectively alleviate the troublesome global energy crisis by converting solar energy into the chemical energy of hydrogen. In order to realize efficient hydrogen generation, a variety of semiconductor materials have been extensively investigated, including TiO , CdS, g-C N , metal-organic frameworks (MOFs), and others. In recent years, to achieve higher photocatalytic performance and reach the level of large-scale industrial applications, photocatalysts decorated with transition metal phosphides (TMPs) have shone brightly because of their low cost, stable physical and chemical properties, and substitution for precious metals of TMPs.

Enhanced Thermoelectric Properties of Bilayer-Like Structural Graphene Quantum Dots/Single-Walled Carbon Nanotubes Hybrids.

In order to improve the thermoelectric properties of single-walled carbon nanotubes (SWCNTs), bilayer-like structures of graphene quantum dots (GQDs) and SWCNTs films (b-GQDs/SWCNTs) were prepared by directly coating GQDs on the surface of SWCNTs films. Compared to pristine SWCNT films (p-SWCNTs), the electrical conductivity of b-GQDs/SWCNTs increased while their Seebeck coefficient decreased. The special interface structure of GQDs and SWCNTs can not only improve carrier transport to increase electrical conductivity but also scatter phonons to reduce thermal conductivity.

PEDOT:PSS/graphene quantum dots films with enhanced thermoelectric properties via strong interfacial interaction and phase separation.

The typical conductive polymer of PEDOT:PSS has recently attracted intensive attention in thermoelectric conversion because of its low cost and low thermal conductivity as well as high electrical conductivity. However, compared to inorganic counterparts, the relatively poor thermoelectric performance of PEDOT:PSS has greatly limited its development and high-tech applications. Here, we report a dramatic enhancement in the thermoelectric performance of PEDOT:PSS by constructing unique composite films with graphene quantum dots (GQDs).

Comparing Mechanical Bowel Preparation With Both Oral and Systemic Antibiotics Versus Mechanical Bowel Preparation and Systemic Antibiotics Alone for the Prevention of Surgical Site Infection After Elective Colorectal Surgery: A Meta-Analysis of Randomized Controlled Clinical Trials.

Background: The discussion on the role of mechanical bowel preparation and oral antibiotics in elective colorectal surgery is still ongoing.

Objective: This meta-analysis aimed to determine whether oral systemic antibiotics with mechanical bowel preparation are superior to systemic antibiotics and mechanical bowel preparation for prophylaxis of bacterial infection during elective colorectal operation.

Data Sources: Embase, PubMed, and the Cochrane Library were searched using the terms oral, antibiotics/antimicrobial, colorectal/rectal/colon/rectum, and surgery/operation.

Two three-dimensional networks in the binary molecular adducts 4-methylimidazolium hydrogen terephthalate and bis(4-methylimidazolium) terephthalate.

Both the 1:1 and 2:1 molecular adducts of 4-methylimidazole (4-MeIm) and terephthalic acid (H2TPA) are organic salts, viz. C4H7N2+.C8H5O4-, (I), and 2C4H7N2+.

{N,N'-Bis[(E)-3-phenyl-allyl-idene]ethane-1,2-diamine}dichloridozinc(II).

In the title compound, [ZnCl(2)(C(20)H(20)N(2))], the Zn(II) atom is four coordinated in a distorted tetra-hedral geometry by two N atoms of the Schiff base ligand and by two Cl atoms. Edge-to-face C-H⋯π inter-actions exist between mol-ecules, with a dihedral angle of 37.8 (1)° between the benzene ring planes and a shortest H⋯centroid distance of 3.

Bis(2-amino-pyrimidine-κN)dibromidozinc(II).

The title compound, [ZnBr(2)(C(4)H(5)N(3))(2)], is a mononuclear complex in which the Zn(II) ions have distorted tetra-hedral coordination geometry. The Zn(II) ion binds to two N atoms from two different 2-amino-pyrimidine ligands and two bromide ions. N-H⋯N hydrogen bonds link the mol-ecules to form a one-dimensional supra-molecular structure.