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Your search keyword '"Chen, Shanyong"' showing total 282 results
Start Over Author "Chen, Shanyong" Publication Type Academic Journals
282 results on '"Chen, Shanyong"'

32. Coupling Nano and Atomic Electric Field Confinement for Robust Alkaline Oxygen Evolution.

Author

Wang, Qiyou, Gong, Yujie, Zi, Xin, Gan, Lei, Pensa, Evangelina, Liu, Yuxiang, Xiao, Yusen, Li, Hongmei, Liu, Kang, Fu, Junwei, Liu, Jun, Stefancu, Andrei, Cai, Chao, Chen, Shanyong, Zhang, Shiguo, Lu, Ying‐Rui, Chan, Ting‐Shan, Ma, Chao, Cao, Xueying, and Cortés, Emiliano

Subjects
ELECTRIC fields, DENSITY functionals, OXYGEN evolution reactions, FINITE element method, DENSITY functional theory
Abstract

The alkaline oxygen evolution reaction (OER) is a promising avenue for producing clean fuels and storing intermittent energy. However, challenges such as excessive OH− consumption and strong adsorption of oxygen‐containing intermediates hinder the development of alkaline OER. In this study, we propose a cooperative strategy by leveraging both nano‐scale and atomically local electric fields for alkaline OER, demonstrated through the synthesis of Mn single atom doped CoP nanoneedles (Mn SA‐CoP NNs). Finite element method simulations and density functional theory calculations predict that the nano‐scale local electric field enriches OH− around the catalyst surface, while the atomically local electric field improves *O desorption. Experimental validation using in situ attenuated total reflection infrared and Raman spectroscopy confirms the effectiveness of the nano‐scale and atomically electric fields. Mn SA‐CoP NNs exhibit an ultra‐low overpotential of 189 mV at 10 mA cm−2 and stable operation over 100 hours at ~100 mA cm−2 during alkaline OER. This innovative strategy provides new insights for enhancing catalyst performance in energy conversion reactions. [ABSTRACT FROM AUTHOR]

Published
2024
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43. Rational design of type-I photosensitizer molecules for mitochondrion-targeted photodynamic therapy.

Author

Liang, Jiaxin, Ran, Xiaoyun, Liu, Yanhong, Yu, Xiaoqi, Chen, Shanyong, and Li, Kun

Abstract

Photodynamic therapy (PDT) has emerged as a promising approach for tumor treatment. However, traditional type II PDT faces limitations due to its oxygen-dependent nature. Type-I photosensitizers (PSs) exhibit superiority over conventional type-II PSs owing to their diminished oxygen dependence. Nevertheless, designing effective type-I PSs remains a significant challenge. In this work, we provide a novel strategy to tune the PDT mechanism of an excited photosensitizer through aryl substituent engineering. Using S-rhodamine as the base structure, three PSs were synthesized by incorporating phenyl, furyl, or thienyl groups at the meso position. Interestingly, furyl- or thienyl-substituted S-rhodamine are type-I-dominated PSs that produce O2˙−, while phenyl S-rhodamine results in O2˙− and 1O2 through type-I and type-II mechanisms, respectively. Experimental analyses and theoretical calculations showed that the introduction of a five-membered heterocycle at the meso position promoted intersystem crossing (ISC) and electron transfer, facilitating the production of O2˙−. Furthermore, furyl- or thienyl-substituted S-rhodamine exhibited high phototoxicity at ultralow concentrations. Thienyl-substituted S-rhodamine showed promising PDT efficacy against hypoxic solid tumors. This innovative strategy provides an alternative approach to developing new type-I PSs without the necessity for creating entirely new skeletons. [ABSTRACT FROM AUTHOR]

Published
2024
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47. Research on Separation of Tc from Mo with Viologen-Based Cationic Organic Polymer

Author

ZHAO Pengwei;DING Mu;CHEN Shanyong;JIN Yongdong;XIA Chuanqin

Subjects
viologen, cationic organic polymer, adsorption, molybdenum and technetium separation, rhenium, Nuclear and particle physics. Atomic energy. Radioactivity, QC770-798
Abstract

To increase the radioactivity of 99mTc in the eluent to meet the needs of medical diagnosis, finding a new type of high-efficiency molybdenum and technetium separation material is important. In this study, a viologen-based cationic organic polymer (VBCOP) was prepared and its adsorption toward ReO-4 and MoO2-4 was studied. The influence of pH, the initial concentration of Mo and Re was investigated. In addition, the sorption performance of VBCOP on Re in solutions containing different molar ratios between Re (10 mg·L-1) and Mo was studied. The results show that VBCOP has excellent sorption performance for Re and good selectivity. VBCOP can show good adsorption performance in a wide range of pH, and the effect of alkaline conditions on Mo is greater than that on Re. The saturated sorption capacity of VBCOP for ReO-4 reaches 597 mg·g-1 and the saturated sorption capacity for MoO2-4 is 196 mg·g-1. Under neutral conditions, and when the Re∶Mo molar ratio is 1∶10 000, VBCOP can still exhibit a certain adsorption effect on ReO-4 (35%), which is expected to pave the way for further research.

Published
2021
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