4篇
您的检索式：作者名="Jitang Zhang"
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| 1 | Metallurgical recovery of metals from electronic waste:a review显示文摘 | CUI Jitang ZHANG Lifeng | 2008 | J Hazard Mater2008，158，2： | 1 |
| 2 | Novel CoP/CoMoP_(2) heterojunction with nanoporous structure as an efficient electrocatalyst for hydrogen evolution显示文摘The exploration of new heterojunction materials is of great significance in reducing the cost of existing noble metal catalysts and thus realizing the large-scale application of electrocatalytic hydrolysis technology.Herein,a novel CoP/CoMoP_(2) heterojunction was synthesized and served as a hydrogen evolution reaction(HER)electrocatalyst.The heterojunction has morphology of nanoporous structure,which is conducive to exposing more active sites and facilitating bubbles transport.The charge distribution is optimized by a strong interface interaction between CoP and CoMoP_(2).The catalyst’s conductivity and the adsorption properties of the intermediates have both been enhanced.CoP/CoMoP_(2) demonstrates excellent HER activity with an overpotential of 93.6 mV at 10 mA∙cm^(-2),which is competitive with the reported performance of analogous electrocatalysts.This work provides insights into the development of innovative phosphide-based heterojunction electrocatalysts. | Lili Zhang Xinxing Shi Aijiao Xu Wenwu Zhong Jitang Zhang Shijie Shen | 2024 | Nano Research2024，17，5： | 0 |
| 3 | High activity and stability in Ni_(2)P/(Co,Ni)OOH heterointerface with a multiple-hierarchy structure for alkaline hydrogen evolution reaction显示文摘The fabrication of heterointerface materials with hierarchical morphologies more than two levels is a challenging yet promising approach to achieve optimal electrocatalyst for hydrogen evolution reaction(HER).Here,using a facile two-step method,we are able to prepare the Ni_(2)P/(Co,Ni)OOH heterointerface with a three-level hierarchy morphology.The multiple levels of hierarchy structures not only offer considerable area for active sites loading,but also facilitate the substance transportation,both beneficial for HER.Meanwhile,the strong charge transfer at the Ni_(2)P/(Co,Ni)OOH heterointerface eliminates the spin asymmetry and achieves the thermos-neutral adsorption of active H species.Moreover,the resulted Coulomb attraction stacks the two materials firmly,facilitating the stability.Density functional theory(DFT)and in-situ Raman measurements reveal the sufficient Ni atoms acting as the active sites.With these merits,the Ni_(2)P/(Co,Ni)OOH exhibits much better HER activity than the separate Ni_(2)P or(Co,Ni)OOH,affording a current density of 100 mA/cm^(2)at an overpotential of 169 mV and a Tafel slope of 41 mV/dec,when tested in alkaline electrolyte.This work provides inspiration for optimizing the intrinsic HER activity utilizing multiple-level hierarchy structures. | LiLi Zhang Zongpeng Wang Jitang Zhang Zhiping Lin Qinghua Zhang Wenwu Zhong Guangfeng Wu | 2023 | Nano Research2023，16，5： | 0 |
| 4 | Variational Wavelet Ensemble Empirical(VWEE)Denoising Method for Electromagnetic Ultrasonic Signal in High‑Temperature Environment with Low‑Voltage Excitation显示文摘Low excitation voltage for an electromagnetic acoustic transducer(EMAT)is necessary for the petrochemical equipment and facilities inspection,which work at high-temperatures,to avoid potential explosion.However,low excitation voltage causes low signal-to-noise ratio(SNR)signals that are difficult to extract features,especially in a high-temperature environment,which causes high noise.In this study,a denoising method called the variational wavelet ensemble empirical(VWEE)method was proposed by combining the advantages of the variational modal decomposition(VMD),wavelet threshold(WT)denoising,and ensemble empirical mode decomposition(EEMD)methods.To validate the VWEE method,EMAT signals obtained in the temperature range of 25 to 700°C were analyzed.The results show that,compared with VMD,WT and empirical mode decomposition denoising methods,the SNR of proposed method is improved more than two times.The VWEE method dramatically improved the SNR of a high-temperature EMAT signal and enhanced the accuracy of defect echos extraction. | Jinjie Zhou Shuaijie Zhao Yang Zheng Xingquan Shen Jitang Zhang | 2022 | Chinese Journal of Mechanical Engineering2022，35，6： | 0 |
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