Probing the atomically diffuse interfaces in Pd@Pt core-shell nanoparticles in three dimensions.

Deciphering the three-dimensional atomic structure of solid-solid interfaces in core-shell nanomaterials is the key to understand their catalytical, optical and electronic properties. Here, we probe the three-dimensional atomic structures of palladium-platinum core-shell nanoparticles at the single-atom level using atomic resolution electron tomography. We quantify the rich structural variety of core-shell nanoparticles with heteroepitaxy in 3D at atomic resolution.

Copper(II)-Doped Two-Dimensional Titanium-Based Metal-Organic Frameworks toward Light-Driven CO Reduction to Value-Added Products.

Recently, metal-organic framework (MOF)-based photocatalysts for an efficient CO reduction reaction have drawn wide attention in multidisciplinary fields and sustainable chemistry. In this work, a series of Cu-doped two-dimensional Ti-based MOFs were fabricated by a facile in situ solvothermal method. Cu ions were doped in equal proportions and uniformly dispersed in the crystal structure of the MOF matrix.

The site pair matching of a tandem Au/CuO-CuO nanocatalyst for promoting the selective electrolysis of CO to C products.

Tandem catalysis, in which a CO-to-C process is divided into a CO-to-CO/*CO step and a CO/*CO-to-C step, is promising for enhancing the C product selectivity when using Cu-based electrochemical CO reduction catalysts. In this work, a nanoporous hollow Au/CuO-CuO tandem catalyst was used for catalyzing the eCORR, which exhibited a C product FE of 52.8% at -1.

Tunable Electronic Metal-Support Interactions on Ceria-Supported Noble-Metal Nanocatalysts in Controlling the Low-Temperature CO Oxidation Activity.

A fundamental study on the metal-support interactions of supported metal catalysts is of great importance for developing heterogeneous catalysts with high performance, is still attracting and challenging in many heterogeneous catalytic reactions. In this work, we report the catalytic performances of CeO-supported noble-metal catalysts among single atoms, subnanoclusters (∼1 nm), and nanoparticles (2.2-2.

Exposure of low-concentration arsenic-initiated inflammation and autophagy in rat lungs.

Chronic arsenic exposure through water intake is a worldwide issue, which has caused many diseases. Lungs are the first target organ of arsenic and lung inflammation, autophagy, and even the onset of tumors can be induced by arsenic exposure. Here, we tested the outcome of low-concentration arsenic exposure in rat lungs.

Investigation of rare earth elements in urine and drinking water of children in mining area.

To compare the contents of rare earth elements in urine and drinking water of children in the mining and control areas and evaluate the health risk of children in the mining area.Urine and drinking water of 128 children in the mining area and 125 children in the control area were collected from June to July 2015. The contents of rare earth elements were determined using inductively coupled plasma mass spectrometry.

Two-photon fluorescent probes for biological Mg(2+) detection based on 7-substituted coumarin.

Two novel water-soluble coumarin-based compounds (OC7, NC7) were designed and synthesized as two-photon fluorescent probes for biological Mg(2+) detection. The compounds feature a β-keto acid as a high selective binding site for Mg(2+) and the coumarin framework as the two-photon fluorophore. OC7 and NC7 show significant "off-on" detecting signals (9.