Exchange of CO with CO as Reactant Switches Selectivity in Photoreduction on Co-ZrO from C Paraffin to Small Olefins.

Photocatalytic reduction of CO into C hydrocarbons completes a C-neutral cycle. The reaction pathways of photocatalytic generation of C paraffin and CH from CO are mostly unclear. Herein, a Co-ZrO photocatalyst converted CO into C paraffin, while selectively converting CO into CH and CH (6.

Achieving water-floatable photocatalyst on recycled bamboo chopsticks.

Disposable bamboo chopsticks (DBCs) are difficult to recycle, which inevitably cause secondary pollution. Based on energy and environmental issues, we propose a facile strategy to fabricate floatable photocatalyst (fPC) coated onto DBCs, which can be flexibly used in water purification. The photocatalyst of titania and titanium carbide on bamboo (TiO/TiC@b) was successfully constructed from TiC-Ti powders and DBCs using a coating technique followed heat treatment in carbon powder, and the fPC exhibited excellent photocatalytic activity under visible light irradation.

Oxygen vacancies induced band gap narrowing for efficient visible-light response in carbon-doped TiO.

The band gap of rutile TiO has been narrowed, via the formation of oxygen vacancies (OVs) during heat treatment in carbon powder (cHT) with embedding TiO coatings. The narrowed band gap efficiently improves the visible light response of TiO coatings, to further enhance the visible-light-driven photocatalytic activity. The change in OVs during cHT has been studied by manipulation of cHT temperature and time.

Inactivation of SARS-CoV-2 and photocatalytic degradation by TiO photocatalyst coatings.

The novel severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) causative agent of the COVID-19, which is a global pandemic, has infected more than 552 million people, and killed more than 6.3 million people. SARS-CoV-2 can be transmitted through airborne route in addition to direct contact and droplet modes, the development of disinfectants that can be applied in working spaces without evacuating people is urgently needed.

Efficient and Selective Interplay Revealed: CO Reduction to CO over ZrO by Light with Further Reduction to Methane over Ni by Heat Converted from Light.

The reaction mechanism of CO photoreduction into methane was elucidated by time-course monitoring of the mass chromatogram, in situ FTIR spectroscopy, and in situ extended X-ray absorption fine structure (EXAFS). Under CO , H , and UV/Vis light, CH was formed at a rate of 0.98 mmol h  g using Ni (10 wt %)-ZrO that was effective at 96 kPa.

Dual Photocatalytic Roles of Light: Charge Separation at the Band Gap and Heat via Localized Surface Plasmon Resonance To Convert CO into CO over Silver-Zirconium Oxide.

Confirmation of CO photoconversion into a C-product is crucial to produce solar fuel. However, the total reactant and charge flow during the reaction is complex; therefore, the role of light during this reaction needs clarification. Here, we chose Ag-ZrO photocatalysts because beginning from adventitious C, negligible products are formed using them.

A photofuel cell comprising titanium oxide and silver(I/0) photocatalysts for use of acidic water as a fuel.

A photofuel cell comprising two photocatalysts TiO2 and Ag-TiO2 is demonstrated. The open circuit voltage, short circuit current, and maximum electric power of the PFC were 1.59 V, 74 μA, and 14 μW, respectively.

Opening mechanism of internal nanoporosity of single-wall carbon nanohorn.

Single-wall carbon nanohorn (SWNH), which is a tubular particle with a cone cap, was oxidized in an oxygen flow at various temperatures. N(2) adsorption at 77 K, thermogravimetry (TG), differential thermal analysis (DTA), transmission electron microscopy, and Raman spectroscopy measurements were carried out on the oxidized SWNHs. The specific surface area of the oxidized SWNHs can be controlled by oxidation temperature, giving the maximum value of 1420 m(2)/g.