Science China Chemistry最新文献_第3页

Combined asymmetric catalysis using chiral metal-organic frameworks and chiral phosphoric acid 手性金属有机骨架和手性磷酸的联合不对称催化

IF 9.7 1区化学

Science China Chemistry Pub Date : 2025-06-24 DOI: 10.1007/s11426-025-2699-3

Qingqing Wang, Hongrui Zheng, Xinchao Wang, Fei Wang, Shangda Li, Jian Zhang

引用次数: 0

Isotope-mass-dependent thermal effects of cathode-anode crosstalk in a rechargeable lithium-sulfur battery 可充电锂硫电池中阴极-阳极串扰的同位素质量依赖热效应

IF 9.7 1区化学

Science China Chemistry Pub Date : 2025-06-24 DOI: 10.1007/s11426-025-2673-1

Xi-Xi Feng, Yu-Hui Zhu, Hua Guo, Chao-Hui Zhang, Zaiping Guo, Sen Xin

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A two-dimensional mechanically interlocked polymer crosslinked by [c2]daisy chains 一种由[c2]菊花链交联的二维机械互锁聚合物

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Science China Chemistry Pub Date : 2025-06-19 DOI: 10.1007/s11426-025-2797-4

Nima Khaleghi, Samantha A. Mason, Maham Saqib Saeed, Yuanning Feng

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High-index faceted jagged PtPdTe nanotubes for methanol oxidation reaction 用于甲醇氧化反应的高指数多面锯齿状PtPdTe纳米管

IF 9.7 1区化学

Science China Chemistry Pub Date : 2025-05-30 DOI: 10.1007/s11426-024-2641-0

Qing Hu, Peipei Li, Mengqian Li, Jiacong Wu, Jinyu Ding, Wenya Fan, Qinyuan Hu, Qingxia Chen, Xingchen Jiao

{"title":"High-index faceted jagged PtPdTe nanotubes for methanol oxidation reaction","authors":"Qing Hu, Peipei Li, Mengqian Li, Jiacong Wu, Jinyu Ding, Wenya Fan, Qinyuan Hu, Qingxia Chen, Xingchen Jiao","doi":"10.1007/s11426-024-2641-0","DOIUrl":"10.1007/s11426-024-2641-0","url":null,"abstract":"<div><p>Rationally designing the surface structure with desirable facets has been demonstrated as an effective approach to regulating the catalytic activity and anti-CO poisoning capability of Pd-based catalysts for methanol oxidation reaction (MOR). However, the synthesis of Pd-based alloy with high-index facets to further improve Pd utilization remains a fundamental challenge. Herein, a simple solvothermal method was proposed to synthesize the jagged PtPdTe nanotubes (NTs) with abundant zigzag atomic steps on their surfaces. These zigzag facets are more favorable for both the adsorption of OH and the desorption of CO during MOR. Compared with the smooth PtPdTe NTs, the jagged PtPdTe NTs exhibit an enhanced mass activity of 4201.6 mA mg<sup>−1</sup> and specific activity of 4.12 mA cm<sup>−2</sup>, which are 6.7 and 3.2 times higher than those of commercial Pd/C catalysts, respectively. This work not only advances the understanding of surface engineering in catalysis but also extends the novel design of highly efficient and durable Pd-based catalysts for fuel cells.\u0000</p><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":772,"journal":{"name":"Science China Chemistry","volume":"68 9","pages":"4216 - 4223"},"PeriodicalIF":9.7,"publicationDate":"2025-05-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145011895","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Phytic acid dipotassium as a hole transport layer for stable tin halide perovskite solar cells with tailored interfacial chemical interaction 植酸二钾作为具有定制界面化学相互作用的稳定卤化锡钙钛矿太阳能电池的空穴传输层

IF 9.7 1区化学

Science China Chemistry Pub Date : 2025-05-27 DOI: 10.1007/s11426-024-2657-8

Junjie Huang, Muhammad Abdel-Shakour, Shiwei Zhang, Yongle Pan, Xiaofang Wei, Tianhua Liu, Hongbin Xiao, Junfang Wang, Xiangyue Meng

{"title":"Phytic acid dipotassium as a hole transport layer for stable tin halide perovskite solar cells with tailored interfacial chemical interaction","authors":"Junjie Huang, Muhammad Abdel-Shakour, Shiwei Zhang, Yongle Pan, Xiaofang Wei, Tianhua Liu, Hongbin Xiao, Junfang Wang, Xiangyue Meng","doi":"10.1007/s11426-024-2657-8","DOIUrl":"10.1007/s11426-024-2657-8","url":null,"abstract":"<div><p>Tin halide perovskite (THP) is considered a prominent candidate for lead-free perovskite photovoltaic applications. However, the operational stability and durability of THP devices are severely limited by the weak interactions between the hole transport layer (HTL) and THP. Herein, a novel hole transport material phytic acid dipotassium (PADP) with tailored interfacial chemical interaction has been developed. The abundant -PO(OH)<sub>2</sub> groups in the PADP molecule can strongly interact with perovskite, which is crucial for modulating the perovskite crystallization process to achieve rapid nucleation and slow growth. As confirmed by the <i>in-situ</i> spectral characterization technique, the tailored interaction between PADP and perovskite could reduce the Gibbs free energy for heterogeneous nucleation and increase the activation energy of perovskite crystallization, leading to high-quality THP films on the PADP HTL. Moreover, the most significant result of the tailored interaction between PADP and perovskite was the void-free interface and the formation of two-dimensional perovskite at the buried interface between PADP and perovskites, which suppressed the ion migration with improved device stability. Consequently, the tin perovskite solar cell based on PADP with an efficiency of 12.45% achieved remarkable stability, retaining 90% of initial efficiency after continuous light illumination for 2000 h at the maximum power point.\u0000</p><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":772,"journal":{"name":"Science China Chemistry","volume":"68 9","pages":"4468 - 4477"},"PeriodicalIF":9.7,"publicationDate":"2025-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145011541","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A straightforward organic complexation strategy enables precise and efficient oxidation state control of Np 一个直接的有机络合策略，使精确和有效的氧化态控制Np

IF 9.7 1区化学

Science China Chemistry Pub Date : 2025-05-26 DOI: 10.1007/s11426-025-2642-7

Huaixin Hao, Yaoyang Liu, Xue Dong, Yuxiao Guo, Bin Li, Shuang Liu, Chao Xu, Jing Chen, Zhipeng Wang

{"title":"A straightforward organic complexation strategy enables precise and efficient oxidation state control of Np","authors":"Huaixin Hao, Yaoyang Liu, Xue Dong, Yuxiao Guo, Bin Li, Shuang Liu, Chao Xu, Jing Chen, Zhipeng Wang","doi":"10.1007/s11426-025-2642-7","DOIUrl":"10.1007/s11426-025-2642-7","url":null,"abstract":"<div><p>The recovery of neptunium (Np) from nuclear waste is of paramount importance for mitigating long-term environmental radiotoxicity. However, this endeavor is significantly hindered by the intricate redox chemistry of Np, which necessitates precise control over its oxidation states. Here we present a straightforward and efficient methodology for the quantitative conversion of Np(V) to Np(IV) under catalysis-free and mild conditions, leveraging organic complexation with an array of widely employed tridentate O-donor ligands: <i>N,N,N</i>’,<i>N</i>’-tetramethyl diglycolamide (TMDGA), <i>N,N</i>-dimethyl diglycolamide (DMDGA), and diglycol acid (DGA). Compared to the “free” Np ion, the reduction efficiency of Np(V) unprecedentedly boosts more than 300 times in the case of complexing with TMDGA, thereby opening up a new path to control the oxidation state of Np and supporting the crucial task of Np recovering in spent nuclear fuel reprocessing.\u0000</p><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":772,"journal":{"name":"Science China Chemistry","volume":"68 7","pages":"3071 - 3077"},"PeriodicalIF":9.7,"publicationDate":"2025-05-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145144984","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Harnessing light for propane dehydrogenation: a single-atom catalyst milestone achieved under mild conditions 利用光进行丙烷脱氢：在温和条件下实现的单原子催化剂里程碑

IF 9.7 1区化学

Science China Chemistry Pub Date : 2025-05-23 DOI: 10.1007/s11426-025-2701-1

Jie Chen, Yaopu Yue, Wengang Liu

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Air-stable radical porous hydrogen-bonded organic frameworks 空气稳定自由基多孔氢键有机骨架

IF 9.7 1区化学

Science China Chemistry Pub Date : 2025-05-23 DOI: 10.1007/s11426-025-2700-7

Hao Chen, Lingshan Gong, Yingxiang Ye

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Bond metathesis reactions between a cyclic (alkyl)(amino)aluminum hydride and boranes 环（烷基）（氨基）氢化铝与硼烷之间的键复合反应