Abstract:In this study, we completed a simple low-temperature synthesis of nest-like titanium oxide (TiO 2 ) microspheres with exposed (001) facets. For the first time, the photocatalytic performance was enhanced by sodium hydroxide (NaOH) alkalization. The characterization of as-synthesized F-TiO 2 and OH-TiO 2 were analyzed by field emission scanning electron microscopy, high-resolution transmission electron microscopy, X-ray diffraction, fourier transform infrared spectroscopic analysis, ultraviolet-vis diffuse reflection spectra and Raman spectroscopy. The photocatalytic activity of the as-prepared catalyst was evaluated through the photocatalytic degradation of methylene blue (MB) and Rhodamine B (RhB) under simulated solar light. The results showed that modification using NaOH can lead to an increase in the percentage of (001) facets from 27.8% for F-TiO 2 to 39.2% for OH-TiO 2 . OH-TiO 2 showed superior catalytic photoactivity toward MB. The mechanism of NaOH on TiO 2 is also discussed.

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Background: Circular RNA spi-1 proto-oncogene (circ-SPI1) regulates cell proliferation, apoptosis, and bone marrow differentiation in acute myeloid leukemia (AML).This study aimed to assess the relationship of circ-SPI1 expression with the clinical features, induction therapy response, and survival of AML patients. Methods:In total, 80 AML patients were included with bone marrow (BM) samples collected at baseline and after induction therapy. Additionally, 20 healthy donors (HDs) and 20 disease controls (DCs) were enrolled with BM samples collected after enrollment. BM circ-SPI1 expression was detected by reverse-transcription quantitative polymerase chain reaction assay.Results: Circ-SPI1 expression was highest in AML patients, moderate in DCs, and lowest in HDs (median (interquartile range): 3.