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250 results on '"Zhang, Kailian"'

36. Cost-efficient and ultrasensitive hydrogel-based visual point-of-care sensor integrated with surface patterning and strongly emissive carbon dots directly from Prunus mume Carbonisatus

Author

Qiu, Yan, primary, Xia, Lan, additional, Shi, Rui, additional, Yuan, Long, additional, Zhang, Yuanhua, additional, Chen, Anqi, additional, Zhou, Kai, additional, Wu, Hailong, additional, Zhang, Kailian, additional, Xia, Zhining, additional, and Fu, Qifeng, additional

Published
2023
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42. Pauling‐Type Adsorption of O2 Induced by Heteroatom Doped ZnIn2S4 for Boosted Solar‐Driven H2O2 Production.

Author

Zhang, Kailian, Tian, Lei, Yang, Jingfei, Wu, Fengxiu, Wang, Leigang, Tang, Hua, and Liu, Zhao‐Qing

Subjects
*ADSORPTION (Chemistry), *ACTIVATION energy, *CHARGE exchange, *HYDROGEN peroxide, *COORDINATION polymers, *SCISSION (Chemistry)
Abstract

Breaking the trade‐off between activity and selectivity has perennially been a formidable endeavor in the field of hydrogen peroxide (H2O2) photosynthesis, especially the side‐on configuration of oxygen (O2) on the catalyst surface will cause the cleavage of O−O bonds, which drastically hinders the H2O2 production performance. Herein, we present an atomically heteroatom P doped ZnIn2S4 catalyst with tunable oxygen adsorption configuration to accelerate the ORR kinetics essential for solar‐driven H2O2 production. Indeed, the spectroscopy characterizations (such as EXAFS and in situ FTIR) and DFT calculations reveal that heteroatom P doped ZnIn2S4 at substitutional and interstitial sites, which not only optimizes the coordination environment of Zn active sites, but also facilitates electron transfer to the Zn sites and improves charge density, avoiding the breakage of O−O bonds and reducing the energy barriers to H2O2 production. As a result, the oxygen adsorption configuration is regulated from side‐on (Yeager‐type) to end‐on (Pauling‐type), resulting in the accelerated ORR kinetics from 874.94 to 2107.66 μmol g−1 h−1. This finding offers a new avenue toward strategic tailoring oxygen adsorption configuration by the rational design of doped photocatalyst. [ABSTRACT FROM AUTHOR]

Published
2024
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45. Surface Patterning Enhanced Visualization for Ultrasensitive Naked‐Eye Detection and RGB‐Based High‐Density Information Storage

Author

Zhang, Yuanhua, primary, Qiu, Yan, additional, Xia, Lan, additional, Yuan, Long, additional, Wu, Hailong, additional, Shi, Rui, additional, Chen, Anqi, additional, Zhou, Kai, additional, Zhou, Mingxue, additional, Zhang, Kailian, additional, Zhang, Chunxiang, additional, Xia, Zhining, additional, and Fu, Qifeng, additional

Published
2023
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50. Surface Energy Mediated Sulfur Vacancy of ZnIn2S4 Atomic Layers for Photocatalytic H2O2 Production.

Author

Zhang, Kailian, Dan, Meng, Yang, Jingfei, Wu, Fengxiu, Wang, Leigang, Tang, Hua, and Liu, Zhao‐Qing

Subjects
*SURFACE energy, *CARRIER density, *OXYGEN reduction, *SULFUR
Abstract

Constructing rich defect active site structure for material design is still a great challenge. Herein, a simple surface engineering strategy is demonstrated to construct one‐unit‐cell ZnIn2S4 atomic layers with the modulated surface energy of S vacancy. Rich surface energy can regulate and control the rich S vacancy, which ensures rich active sites, higher charge density and effective carrier transport. As a result, the ZnIn2S4 atomic layers with rich surface energy affords an obvious enhancement in H2O2 productive rate of 1592.04 µmol g−1 h−1, roughly 14.58 times superior to that with poor surface energy. Moreover, the in situ infrared diffuse reflection spectrum indicates that S vacancy as the oxygen reduction reaction active site is responsible for the critical intermediate *O2− and *OOH, corresponding to two‐electron oxygen reduction reaction. This study provides a valuable insight and guidance for constructing controllably defects to achieve highly efficient H2O2 production. [ABSTRACT FROM AUTHOR]

Published
2023
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