Peng-Cheng Li

Nov 6, 2023 | pubs.rsc.org | Ying Feng |Yongchao Zhu |Tian Chen |Peng-Cheng Li

Green and efficient preparation and application of weakly crystalline TiO2 with high catalytic activity Weakly crystalline TiO2 with high catalytic activity was prepared using a simple green chemical oxidation reaction at low temperatures, achieving 90% degradation of MB at 20 min and 100% degradation of IPA at 2 h. Such weakly crystalline TiO2 has rarely been reported in the past.

Aug 28, 2023 | link.aps.org | Wei Xiong |Peng-Cheng Li

This paper studies the quasinormal mode spectrum of the scalar perturbation on the background of the rotating accelerating black holes. The quasinormal frequency ω and the separation constant λ are calculated using two methods: the continued fractions method and the direct integration method. The spectrum is found to include three families of modes: the photon sphere modes, the acceleration modes, and the near extreme modes.