Preparation of TiCT modified rare earth doped PbO electrodes for efficient removal of sulfamethoxazole.

In this study, we deposited TiCT-modified, rare-earth-doped PbO on the surface of a carbon fabric via electrodeposition. The surface morphology and electronic structure of the electrode were characterized with SEM, XRD and XPS. The layered TiCT did not change the structure of β-PbO, and at the same time, it improved the crystallinity of the material and reduced the grains of PbO.

Cyclometalated Ru(II)-NHC complexes with phenanthroline ligands induce apoptosis mediated by mitochondria and endoplasmic reticulum stress in cancer cells.

The exploration of ruthenium complexes as anticancer drugs has been the focus of intense investigation. In this study, we synthesized and characterized four C,N-cyclometalated ruthenium(II) complexes (Ru1-Ru4) coordinated with pyridine-functionalized N-heterocyclic carbene (NHC) and auxiliary ligands (, acetonitrile, 1,10-phenanthroline, 3,4,7,8-tetramethyl-1,10-phenanthroline, and 4,7-diphenyl-1,10-phenanthroline). X-ray diffraction analysis showed that all of the four cycloruthenated complexes are hexa-coordinated in a typical octahedral geometry.

One-step synthesis of PdCu@TiC with high catalytic activity in the Suzuki-Miyaura coupling reaction.

Owing to their enhanced catalytic stability and cyclability, two-dimensional (2D) material-supported Pd-based bimetallic alloys have promising applications for catalytic reactions. Furthermore, the alloying strategy can effectively reduce costs and improve catalytic performance. In this paper, we report a one-step reduction method to synthesize a novel heterogeneous catalyst, PdCu@TiC, with good catalytic performance.

Revealing the microscopic CVD growth mechanism of MoSe and the role of hydrogen gas during the growth procedure.

Understanding the microscopic mechanisms for the nucleation and growth of two-dimensional molybdenum diselenide (2D MoSe) via chemical vapor deposition (CVD) is crucial towards the precisely controlled growth of the 2D material. In this work, we employed a joint use of transmission electron microscopy and CVD, in which the 2D MoSe were directly grown on a graphene membrane based on grids, that enables the microstructural characterization of as-grown MoSe flakes. We further explore the role of hydrogen gas and find: in an argon ambient, the primary products are few-layer MoSe flakes, along with MoO nanoparticles; while with the introduction of H, single-layer MoSe became the dominant product during the CVD growth.

Growth of 'W' doped molybdenum disulfide on graphene transferred molybdenum substrate.

In the present study, a novel method has been carried out to grow tungsten (W) doped molybdenum disulfide (MoS) on the graphene transferred TEM grid in a chemical vapor deposition (CVD) setup. Tungsten trioxide (WO) has been used as a source for 'W' while 'Mo' has been derived from Mo based substrate. Different experimental parameters were used in this experiment.

Hydrogen-assisted post-growth substitution of tellurium into molybdenum disulfide monolayers with tunable compositions.

Herein we report the successful doping of tellurium (Te) into molybdenum disulfide (MoS) monolayers to form MoS Te alloy with variable compositions via a hydrogen-assisted post-growth chemical vapor deposition process. It is confirmed that H plays an indispensable role in the Te substitution into as-grown MoS monolayers. Atomic-resolution transmission electron microscopy allows us to determine the lattice sites and the concentration of introduced Te atoms.

Atomic process of oxidative etching in monolayer molybdenum disulfide.

The microscopic process of oxidative etching of two-dimensional molybdenum disulfide (2D MoS) at an atomic scale is investigated using a correlative transmission electron microscope (TEM)-etching study. MoS flakes on graphene TEM grids are precisely tracked and characterized by TEM before and after the oxidative etching. This allows us to determine the structural change with an atomic resolution on the edges of the domains, of well-oriented triangular pits and along the grain boundaries.