Supramolecular self-assemble deficient carbon nitride nanotubes for efficient photocatalytic CO reduction.

Carbon nitride is an attractive non-metallic photocatalyst due to its small surface area, rapid electron-hole recombination, and low absorption of visible light. In this study, one-dimensional carbon nitride nanotubes were successfully synthesized by supramolecular self-assembly method for photocatalytic reduction of CO under mild conditions. The material demonstrates significantly improved CO-to-CO activity compared to bulk carbon nitride under visible light irradiation, with a rate of 12.

CuIn alloy-embedded ZrO catalysts for efficient CO hydrogenation to methanol: promotion of plasma modification.

CuInZr-O-C catalysts with CuIn alloy structure were prepared by using the sol-gel method. CuInZr-O-PC and CuInZr-O-CP catalysts were obtained from plasma-modified CuInZr-O-C before and after calcination, respectively. Under the conditions of reaction temperature 270°C, reaction pressure 2 MPa, CO/H = 1/3, and GHSV = 12,000 mL/(g h), CuInZr-O-PC catalyst has a high CO conversion of 13.

A one-pot synthesis of AgBr/AgPO composite photocatalysts.

In this study, an AgBr/AgPO (ABAP) photocatalyst has been prepared a facile one-pot anion-exchange method. SEM, XRD, XPS and UV-Vis DRS characterization techniques are carried out to study the structural and physicochemical characteristics of the AgBr/AgPO composites. The ABAP photocatalyst exhibited outstanding photocatalytic capability for the photodegradation of rhodamine B (RhB) under visible light irradiation.

Efficient photocatalytic degradation of volatile organic compounds over carbon quantum dots decorated BiWO under visible light.

A series of CQDs/BiWO (CBW) hybrid materials with different loading amounts of carbon quantum dots (CQDs) were prepared via a facile in situ hydrothermal method. As determined by multiple techniques including XRD, TEM, UV-vis, PL, TPR, and XPS, the CBW possessed expanded visible light response interval, decreased recombination rate of the photogenerated electron hole, and enhanced oxidation ability as compared with the pristine BiWO. In addition, with different loading amounts of CQDs, the optical and electronic properties of the corresponding CBW were different.

The effect of CuO loading on different method prepared CeO catalyst for toluene oxidation.

The support effect on CeO supported CuO catalysts are extensively investigated, but few studies have been reported in volatile organic compounds (VOCs) oxidation. Herein, CuO was impregnated on three conventional method synthesized CeO to study its impact on toluene total oxidation over CeO at low temperature (≤280 °C). Characterization results demonstrated that the shape and specific surface area of CeO affected the degree of CuO dispersion, which determine the interaction between CuO and CeO.

The utilization of dye wastewater in enhancing catalytic activity of CeO-TiO mixed oxide catalyst for NO reduction and dichloromethane oxidation.

Waste is a misplaced resource. Herein, anionic (orange II sodium salt and Ponceau 2R) and cationic (Rhodamine B and Methylene blue) dye wastewater assisted photo-treatment (referred as DAPT) method was developed to modify sol-gel synthesized CeO-TiO (CeTi) mixed oxide catalyst. Catalytic activity test results showed that both anionic and cationic dye wastewater could be used as "fuel" of photo-treatment to enhance the activity of CeTi catalyst in NO reduction and dichloromethane oxidation.

UiO-66-NH₂/GO Composite: Synthesis, Characterization and CO₂ Adsorption Performance.

In this work, a new composite materials of graphene oxide (GO)-incorporated metal-organic framework (MOF)(UiO-66-NH₂/GO) were in-situ synthesized, and were found to exhibit enhanced high performances for CO₂ capture. X-ray diffraction (XRD), scanning electron microscope (SEM), N₂ physical adsorption, and thermogravimetric analysis (TGA) were applied to investigate the crystalline structure, pore structure, thermal stability, and the exterior morphology of the composite. We aimed to investigate the influence of the introduction of GO on the stability of the crystal skeleton and pore structure.

Capture of carbon dioxide from flue gas on TEPA-grafted metal-organic framework Mg2(dobdc).

Carbon dioxide (CO2) adsorption on a standard metal-organic framework Mg2(dobdc) (Mg/DOBDC or Mg-MOF-74) and a tetraethylenepentamine (TEPA) modified Mg2(dobdc) (TEPA-Mg/DOBDC) were investigated and compared. The structural information, surface chemistry and thermal behavior of the adsorbent samples were characterized by X-ray powder diffraction (XRD), infrared spectroscopy (IR), thermogravimetric analysis (TGA) and nitrogen adsorption-desorption isotherm analysis. CO2 adsorption capacity was measured by dynamic adsorption experiments with N2-CO2 mixed gases at 60 degrees C.

Capture of carbon dioxide by amine-loaded as-synthesized TiO2 nanotubes.

Titanium-based adsorbents for CO2 capture were prepared through impregnating the as-synthesized TiO2 nanotubes (TiNT) with four kinds of amines, namely monoethanolamine (MEA), ethylenediamine (EDA), triethylenetetramine (TETA) and tetraethylenepentamine (TEPA). The resultant samples were characterized by X-ray diffraction, low-temperature N2 adsorption as well as transmission electron microscopy. The absorption of CO2 was carried out in a dynamic packed column.

Adsorption of carbon dioxide on amine-modified TiO2 nanotubes.

TiO2 nanotubes (TiNT) were prepared by a hydrothermal treatment and modified by three kinds of amines, namely ethylenediamine, polyetherimide and tetraethylenepentamine (TEPA), to study their CO2 adsorption properties from gas streams. The resultant samples were characterized by X-ray diffraction, transmission electron microscopy, and infrared spectroscopy, as well as low temperature N2 adsorption. CO2 capture was investigated in a dynamic packed column at 30 degrees C.