Publications by authors named "Shuyao Chen"
In cool flames, autoxidation of organic compounds forms alkyl hydroperoxides and ketohydroperoxides, and this controls the critical rate of chain branching, but there have been large uncertainties in the decomposition rate constants. We synthesized a series of hydroperoxides and measured their decomposition rate constants in pyrolysis experiments by spray-vaporization jet-stirred-reactor synchrotron vacuum ultraviolet photoionization mass spectrometry. Structural variation of the hydroperoxides, including alkyl, cycloalkyl, aromatic, and heterocyclic functionalities, has only a slight effect on their decomposition rate constants.
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- Compost-based organic fertilizers have high levels of antibiotic resistance genes (ARGs) and mobile genetic elements (MGEs), making their analysis crucial for understanding antibiotic resistance risks.
- A study examined both extracellular (eARGs and eMGEs) and intracellular (iARGs and iMGEs) distributions of these genetic components across 51 commercial composts using advanced techniques like qPCR and metagenomic sequencing.
- Findings revealed that a significant percentage of ARGs and MGEs are found in both forms, with key similarities in diversity and association with plasmids, emphasizing the need for careful risk assessment and management of compost use.
Novel all-inorganic Sn-Pb alloyed perovskites are developed aiming for low toxicity, low bandgap, and long-term stability. Among them, CsPb Sn I Br is predicted as an ideal perovskite with favorable band gap, but previously is demonstrated unable to convert to perovskite phase by thermal annealing. In this report, a series of CsPb Sn I Br perovskites with tunable bandgaps from 1.
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- A low-temperature preparation method for titanium dioxide (TiO) used as an electron transport layer (ETL) is crucial for creating flexible solar devices, but it often leads to interface defects that hinder performance.
- The study introduces a simple low-temperature process to co-dope TiO with tantalum (Ta) and niobium (Nb), which enhances the material's properties by increasing its conduction band level and reducing trap-state defects.
- As a result, a significant boost in power conversion efficiency to 19.44% has been achieved in perovskite solar cells (PSCs) using this modified TiO ETL, compared to 17.60% with standard TiO.
Hydrogenation of CO into aromatics over a ZnCrO-zeolite composite catalyst.
Chem Commun (Camb)
January 2019
A ZnCrOx-ZnZSM-5 composite catalyst was used for CO2 hydrogenation into hydrocarbons especially aromatics (Aro). 81.1% Aro selectivity in C5+ hydrocarbons (mainly C5-11) was obtained at 320 °C, corresponding to 19.
View Article and Find Full Text PDFA kind of core-shell catalyst with Fe-Zn-Zr as the core and a zeolite (HZSM-5, Hbeta, and HY) as the shell was synthesized by a simple cladding method. The catalyst has an obvious confinement effect on the synthesis of isoalkanes by CO2 hydrogenation. Especially, the Fe-Zn-Zr@HZSM-5-Hbeta catalyst with a double-zeolite shell exhibits an extraordinary high i-HC/t-HC ratio.
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