Regulating the Pt-MnO Interaction and Interface for Room Temperature Formaldehyde Oxidation.

Formaldehyde (HCHO) is a hazardous pollutant in indoor space for humans because of its carcinogenicity. Removing the pollutant by MnO-based catalysts is of great interest because of their high oxidation performance at room temperature. In this work, we regulate the Pt-MnO (MnO = manganese oxide) interaction and interface by embedding Pt in MnO (Pt-in-MnO) and by dispersing Pt on MnO (Pt-on-MnO) for HCHO oxidation over Pt-MnO catalysts with trace Pt loading of 0.

Ni-Cu Alloy Nanoparticles Confined by Physical Encapsulation with SiO and Chemical Metal-Support Interaction with CeO for Methane Dry Reforming.

Fabrication of sintering- and carbon-free Ni catalysts for methane dry reforming (MDR), which is attractive to upgrade greenhouse gases CH and CO, is challenging. In this work, we innovatively synthesized Ni-Cu alloy nanoparticles confined by physical encapsulation and chemical metal-support interaction (MSI); the synergism of alloy effect, size effect, MSI, and confinement effect in the catalysts gave high rates of CH and CO of 6.98 and 7.

Alloying Ni-Cu Nanoparticles Encapsulated in SiO Nanospheres for Synergistic Catalysts in CO Reforming with Methane Reaction.

In this work, we studied CO reforming with the methane (CRM) reaction over Ni-Cu alloy nanoparticles encapsulated in SiO nanospheres, for which combinational functions of alloy effect, size effect, metal-support interaction, and confinement effect exhibited high performance, good sintering resistance, and trace carbon deposition in CRM. The appropriate Cu-addition catalysts 0.2Cu-Ni@SiO and 0.

Amorphous MnCO/C Double Layers Decorated on BiVO Photoelectrodes to Boost Nitrogen Reduction.

NH is mainly obtained by the Haber-Bosch method in the process of industrial production, which is not only accompanied by huge energy consumption but also environmental pollution. The reduction of N to NH under mild conditions is an important breakthrough to solve the current energy and environmental problems, so the preparation of catalysts that can effectively promote the reduction of N is a crucial step. In this work, BiVO decorated with amorphous MnCO/C double layers has been successfully synthesized by a one-step method for the first time.

Ag-Pi/BiVO heterojunction with efficient interface carrier transport for photoelectrochemical water splitting.

The limitation of pristine BiVO photoanode severely causes the high carrier recombination efficiency and low energy conversion efficiency in the photoelectrochemical (PEC) system. In this work, the Ag-Pi/BiVOn-n heterojunction has been rationally designed and fabricated for efficient PEC water splitting, through successive ionic layer adsorption reaction method. The built-in field of Ag-Pi/BiVO significantly promotes the separation efficiency of photogenerated carriers, benefiting for the participation of abundant holes in water oxidation.

Low Temperature CO Reforming with Methane Reaction over CeO-Modified Ni@SiO Catalysts.

Developing high performance catalysts for the low temperature CO reforming with methane (CRM) reaction is a challenge due to the occurrences of metal sintering and carbon deposition. In this study, we synthesized CeO modified Ni@SiO catalysts with excellent properties of sintering-resistance and low carbon deposition for high performance low temperature CRM. The Ni@SiO-CeO catalysts displayed a size effect from tiny Ni nanoparticles to enhance CRM performance and a confinement effect from silica encapsulation to limit Ni sintering and exhibited oxygen storage capacity from ceria to reduce carbon deposition.

Catalytic oxidation of low-concentration CO at ambient temperature over supported Pd-Cu catalysts.

The CO catalytic oxidation at ambient temperature and high space velocity was studied over the Pd-Cu/MOx (MOx = TiO2 and AI203) catalysts. The higher Brunauer-Emmett-Teller area surface of the A1203 support facilitates the dispersion of Pd2+ species, and the presence of Cu2Cl(OH)3 accelerates the re-oxidation of Pd0 to Pd2+ over the Pd-Cu/Al203 catalyst, which contributed to better performance of CO catalytic oxidation. The poorer activity of the Pd-Cu/TiO2 catalyst was attributed to the lower dispersion of Pd2+ species because of the less surface area and the non-formation of Cu2CI(OH)3 species.