Nitrogen Configuration Effects on Charge Carrier Dynamics in CsPbBr/Carbon Dots S-Scheme Heterojunction for Photocatalytic CO Reduction.

Nitrogen-doped carbon dots (NCDs) featuring primary pyrrolic N and pyridinic N dominated configurations were prepared using hydrothermal (H-NCDs) and microwave (M-NCDs) methods, respectively. These H-NCDs and M-NCDs were subsequently applied to decorate CsPbBr nanocrystals (CPB NCs) individually, using a ligand-assisted reprecipitation process. Both CPB/M-NCDs and CPB/H-NCDs nanoheterostructures (NHSs) exhibited S-scheme charge transfer behavior, which enhanced their performance in photocatalytic CO reduction and selectivity of CO-to-CH conversion, compared to pristine CPB NCs.

Silica wastes derived multifunctional coatings for formaldehyde photodegradation and autonomous indoor humidity buffering.

To maintain a comfortable and healthy indoor environment without large amounts of energy consumption is of great importance. The progress of multifunctional indoor coatings with formaldehyde photodegradation and humidity buffering capability is necessary. From the viewpoints of circular economy, the preparation of effective photocatalysts (denoted as sFCC/GCN-x and ESF/GCN-y) via the decoration of recycling industrial wastes (i.

Charge Carrier Dynamics of CsPbBr/g-CN Nanoheterostructures in Visible-Light-Driven CO-to-CO Conversion.

The photon energy-dependent selectivity of photocatalytic CO-to-CO conversion by CsPbBr nanocrystals (NCs) and CsPbBr/g-CN nanoheterostructures (NHSs) was demonstrated for the first time. The surficial capping ligands of CsPbBr NCs would adsorb CO, resulting in the carboxyl intermediate to process the CO-to-CO conversion via carbene pathways. The type-II energy band structure at the heterojunction of CsPbBr/g-CN NHSs would separate the charge carriers, promoting the efficiency in photocatalytic CO-to-CO conversion.

Mechanisms of biochar enhanced CuO photocatalysts in the visible-light photodegradation of sulfamethoxazole.

CuO nanoparticles are decorated with biochars derived from spent coffee grounds (denoted as CuO/SCG) and applied as visible-light-active photocatalysts in the sulfamethoxazole (SMX) degradation. The physicochemical properties of CuO/SCG are identified by various spectral analysis, electrochemical and photochemical techniques. As a result, the CuO/SCG exhibits the higher removal efficiency of SMX than the pristine CuO under visible light irradiation.

Aerobic oxidation of 5-hydroxymethylfurfural into 2,5-diformylfuran using manganese dioxide with different crystal structures: A comparative study.

Aerobic oxidation of 5-Hydroxymethylfurfural (HMF) to 2,5-Diformylfuran (DFF) using O gas represents a sustainable approach for valorization of lignocellulosic compounds. As manganese dioxide (MnO) is validated as a useful oxidation catalyst and many crystalline forms of MnO exist, it is critical to explore how the crystalline structures of MnO influence their physical/chemical properties, which, in turn, determine catalytic activities of MnO crystals for HMF oxidation to DFF. In particular, six MnO crystals, α-MnO, β-MnO, γ-MnO, δ-MnO, ε-MnO, and λ-MnO are prepared and investigated for their catalytic activities for HMF oxidation to DFF.

The abnormalities of coagulation and fibrinolysis in acute lung injury caused by gas explosion.

Acute lung injury (ALI) caused by gas explosion is common, and warrants research on the underlying mechanisms. Specifically, the role of abnormalities of coagulation and fibrinolysis in this process has not been defined. It was hypothesized that the abnormal coagulation and fibrinolysis promoted ALI caused by gas explosion.

[Effects of HuDan Granules on lipid metabolism and antioxidant activity of mice with hyperlipidemia].

Objective: To study the effects of HuDan Granules on lipid metabolism and antioxidant activity of mice with hyperlipidemia.

Methods: Seventy-eight mice were divided into six groups randomly: the normal control group, hyperlipemia group, HuDan Granules high, middle, low dose group and the Simvastatin group. Besides the normal control group, all the mice in the other groups were fed with lipid emulsion for 4 weeks.

A novel technique of three-dimensional reconstruction segmentation and analysis for sliced images of biological tissues.

A novel technique of three-dimensional (3D) reconstruction, segmentation, display and analysis of series slices of images including microscopic wide field optical sectioning by deconvolution method, cryo-electron microscope slices by Fourier-Bessel synthesis and electron tomography (ET), and a series of computed tomography (CT) was developed to perform simultaneous measurement on the structure and function of biomedical samples. The paper presents the 3D reconstruction segmentation display and analysis results of pollen spore, chaperonin, virus, head, cervical bone, tibia and carpus. At the same time, it also puts forward some potential applications of the new technique in the biomedical realm.