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您的检索式：作者名="Jinpeng Zhan"
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| 1 | Preparation of Au nanoparticles modified TiO_2 nanotube array sensor and its application as chemical oxygen demand sensor显示文摘Au nanoparticles(AuNPs) were electrodeposited at the highly ordered anatase TiO_2 nanotube array(TiO_2 NA) electrode under sonicating, and the AuNP-TiO_2 NA sensor was characterized by scanning electron microscope(SEM), X-ray photoelectron spectroscopy(XPS), X-ray diffraction(XRD). The photoelectrochemical experiments indicate the AuNP-TiO_2 NA sensor has lower photoelectro-resistance,higher photoelectrocatalytical activity and stability than that of pure TiO_2 NA sensor under the same conditions. The as-prepared sensor can be used for the determination of chemical oxygen demand(COD)in real samples, and the obtained results are comparable well with those of by standard K_2Cr_2O_7 method.The method proposed is simple, fast, cost effective, and environmentally friendly. | Longqi Liang Jiao Yin Jinpeng Bao Linchuan Cong Weimin Huang Haibo Lin Zhan Shi | 2019 | Chinese Chemical Letters2019，30，1： | 2 |
| 2 | The Cauchy problem for a class of nonlinear degenerate parabolic-hyperbolic equations显示文摘In this article, we prove a general existence theorem for a class of nonlinear degenerate parabolichyperbolic equations. Since the regions of parabolicity and hyperbolicity are coupled in a way that depends on the solution itself, there is almost no hope of decoupling the regions and then taking into account the parabolic and the hyperbolic features separately. The existence of solutions can be obtained by ?nding the limit of solutions for the regularized equation of strictly parabolic type. We use the energy methods and vanishing viscosity methods to prove the local existence and uniqueness of solution. | Hua Chen Jinpeng Zhan Xin Hu | 2019 | Science China Mathematics2019，62，5： | 0 |
| 3 | The Gevrey smoothing effect for the spatially inhomogeneous Boltzmann equations without cut-off显示文摘In this article we study the Gevrey regularization effect for the spatially inhomogeneous Boltzmann equation without angular cut-off.This equation is partially elliptic in the velocity direction and degenerates in the spatial variable.We consider the nonlinear Cauchy problem for the fluctuation around the Maxwellian distribution and prove that any solution with mild regularity will become smooth in the Gevrey class at positive time with the Gevrey index depending on the angular singularity.Our proof relies on the symbolic calculus for the collision operator and the global subelliptic estimate for the Cauchy problem of the linearized Boltzmann operator. | Hua Chen Xin Hu Wei-Xi Li Jinpeng Zhan | 2022 | Science China Mathematics2022，65，3： | 0 |
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