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Efficient anion immobilization enabled by structurally controllable halloysite for dendrite-free sodium metal anode

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中国科学:化学英文版 2023年第9期66卷 2600-2611页

作者： caihong yang Yicheng Hua Ying Zhang Jie Wang Huanwen Wang Liangjie Fu Aidong Tang Huaming yang Engineering Research Center of Nano-Geomaterials of Ministry of Education China University of GeosciencesWuhan 430074China Laboratory of Advanced Mineral Materials China University of GeosciencesWuhan 430074China Faculty of Materials Science and Chemistry China University of GeosciencesWuhan 430074China College of Chemistry and Chemical Engineering Central South UniversityChangsha 410083China Hunan Key Laboratory of Mineral Materials and Application School of Minerals Processing and BioengineeringCentral South UniversityChangsha 410083China

Sodium metal has shown great potential as an inexpensive anode for rechargeable batteries. However, the growth of sodium dendrites continues to hinder the commercialization of Na metal batteries. Herein, an effective strategy using anion-anchoring halloysite nanotube(HNT) coating was proven to prevent the diffusion of anions and trigger uniform Na deposition. Through theoretical calculation, a model of active site of fixed anions exposed from HNTs after acid activation was established for the first time, revealing that Si–Al sites are effective active site of acid-activated HNTs. Furthermore, HNTs with strong and effective adsorption capacity for anions were obtained by controlling the structure of HNTs to regulate the exposure of Si–Al sites. The strong interaction between sites of acid-activated HNTs and the SO_(3)CF_(3)^(-) anion effectively promotes the dissociation of sodium salts, the release of Na^(+) and subsequent migration. As a result, HNTs acid activation for 4 h shows a steady sodium deposition process and displays high Coulombic efficiency in half cell, long cycle life in symmetric cell and full cell. This work provides a basic theoretical basis for the design of nanoclay with abundant and effective active site to fix anions for dendritic free metal batteries.

关键词： halloysite anion immobilization ion transport sodium dendrites sodium metal batteries

Upcycling of phosphogypsum waste for efficient zinc-ion batteries

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Journal of Energy Chemistry 2023年第6期81卷 157-166,I0006页

作者： Huanwen Wang Can Luo Yinyin Qian caihong yang Xiaojun Shi Yansheng Gong Rui Wang Beibei He Jun Jin Aidong Tang Edison Huixiang Ang Huaming yang Engineering Research Center of Nano-Geomaterials of Ministry of Education China University of GeosciencesWuhan 430074HubeiChina Faculty of Materials Science and Chemistry China University of GeosciencesWuhan 430074HubeiChina Key Laboratory of Functional Geomaterials in China Nonmetallic Minerals Industry China University of GeosciencesWuhan 430074HubeiChina College of Chemistry and Chemical Engineering Central South UniversityChangsha 410083HunanChina Natural Sciences and Science Education National Institute of EducationNanyang Technological UniversitySingapore 637616Singapore School of Minerals Processing and Bioengineering Central South UniversityChangsha 410083HunanChina

Zinc metal is a promising anode material for next-generation aqueous batteries,but its practical application is limited by the formation of zinc dendrite.To prevent zinc dendrite growth,various Zn^(2+)-conducting but water-isolating solid-electrolyte interphase(SEI)films have been developed,however,the required high-purity chemical materials are extremely expensive.In this work,phosphogypsum(PG),an industrial byproduct produced from the phosphoric acid industry,is employed as a multifunctional protective layer to navigate uniform zinc deposition.Theoretical and experimental results demonstrate that PG-derived CaSO_(4)2H_(2)O can act as an artificial SEI layer to provide fast channels for Zn^(2+)transport.Moreover,CaSO_(4)2H_(2)O could release calcium ions(Ca^(2+))due to its relatively high Kspvalue,which have a higher binding energy than that of Zn^(2+)on the Zn surface,thus preferentially adsorbing to the tips of the protuberances to force zinc ions to nucleate at inert region.As a result,the Zn@PG anode achieves a high Coulombic efficiency of 99.5%during 500 cycles and long-time stability over 1000 hours at 1 m A cm^(-2).Our findings will not only construct a low-cost artificial SEI film for practical metal batteries,but also achieve a high-value utilization of phosphogypsum waste.

关键词： Upcycling Phosphogypsum waste Zinc-ion battery Solid-electrolyte-interface Protection layer

Bamboo‑Inspired Gasotransmitter Microfibres for Wound Healing

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Advanced Fiber Materials 2023年第1期5卷 388-399页

作者： Cheng Zhao Jiahui Guo Han Zhang Min Nie caihong yang Yujuan Zhu Yuanjin Zhao Liping Zhong Department of Rheumatology and Immunology Institute of Translational MedicineThe Affiliated Drum Tower Hospital of Nanjing University Medical SchoolNanjing 210002China National Center for International Biotargeting Theranostics Guangxi Key Laboratory of Biotargeting TheranosticsCollaborative Innovation Center for Targeting Tumour TheranosticsGuangxi Medical UniversityGuangxi 530021China State Key Laboratory of Bioelectronics School of Biological Science and Medical EngineeringSoutheast UniversityNanjing 210096China

Diabetic wounds have become a major clinical problem that cannot be ignored.Gases,such as hydrogen sulphide(H_(2)S),have demonstrated value in inducing angiogenesis and accelerating wound healing,while their effective delivery is still challenging.Here,inspired by the continuous-independent hollow structure of bamboo,we propose novel gasotransmitter microfibres with septal H_(2)S bubbles using microfluidic spinning for diabetic wound healing.Benefitting from the exact control of microfluidics,gasotransmitter microfibres with different bubble sizes and morphologies could be generated successfully and continuously.Under the dual effects of drugs in the shell and gas in the core,the wound healing process could be accelerated.Furthermore,the controllable release of drugs could be achieved by adding responsive materials into the microfiber shell,which would promote continuous effects of contents on demand.Based on in vitro and in vivo stud-ies,we have proven that these gasotransmitter microfibres have a positive impact on inducing angiogenesis and promoting cell proliferation during wound healing.Thus,it is believed that the bamboo-inspired gasotransmitter microfibres will have important value in gasotransmitter research and clinical applications.

关键词： Microfluidics Hydrogel Wound healing Bioinspired Gasotransmitter

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SPS在SPH模拟黏性流动问题中的应用

华中科技大学学报（自然科学版） 2024年第1期52卷 59-65页

作者：杨彩虹管延敏康庄周利江苏科技大学船舶与海洋工程学院江苏镇江212000 哈尔滨工程大学船舶与海洋工程学院黑龙江哈尔滨150001

针对传统光滑粒子流体动力学(SPH)无法准确定义雷诺数问题,引入亚粒子尺度技术(SPS)对流体黏性进行处理,开发了SPS-δ-SPH算法.分别采用人工黏性、层流黏性和SPS湍流黏性的处理方法对不同雷诺数下的二维圆柱绕流进行数值模拟,分析不同... 详细信息

针对传统光滑粒子流体动力学(SPH)无法准确定义雷诺数问题,引入亚粒子尺度技术(SPS)对流体黏性进行处理,开发了SPS-δ-SPH算法.分别采用人工黏性、层流黏性和SPS湍流黏性的处理方法对不同雷诺数下的二维圆柱绕流进行数值模拟,分析不同黏性处理方法下的水动力系数的变化并与相关文献结果进行比较.结果表明:SPS湍流模型在较低雷诺数下的升阻力计算结果与实验值较为接近,且在较高雷诺数下有效可靠,SPS-δ-SPH算法适用于黏性绕流问题.在此基础上,将SPS-δ-SPH算法进一步应用于穿透自由液面的三维圆柱绕流问题并得到了较高精度的计算结果.研究结果对解决海洋工程领域的相关问题具有参考价值.

关键词：光滑粒子流体动力学黏性流动 SPS湍流模型水动力系数三维圆柱绕流

数字经济与地方财政可持续性——基于国家级大数据综合试验区的准自然实验

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财经论丛 2024年第5期 39-48页

作者：杨彩虹梁宏志贵州财经大学经济学院贵州贵阳550025

在数字经济时代及地方财政收支压力加大的双重背景下,从财政视角探究数字经济对地方财政可持续性的影响是值得关注的问题。本文选择2016年全国获批建设国家级大数据综合试验区的准自然实验作为数字经济的代理变量,利用2013—2022年31个... 详细信息

在数字经济时代及地方财政收支压力加大的双重背景下,从财政视角探究数字经济对地方财政可持续性的影响是值得关注的问题。本文选择2016年全国获批建设国家级大数据综合试验区的准自然实验作为数字经济的代理变量,利用2013—2022年31个省份的面板数据,测度了我国各地区的财政可持续能力指数,并采用倾向得分匹配双重差分法评估数字经济对地方财政可持续能力的影响及差异。研究发现:数字经济明显促进了地方财政可持续能力的提升,在进行了安慰剂检验和替换被解释变量后,结论仍然成立。作用机制表明,数字经济发展通过提升财政依存度和财政自给率来影响地方财政可持续性。异质性分析表明,数字经济能够有效改善和提升西部地区、政府负债率高水平地区和政府效率低水平地区的财政可持续能力,有助于减少财政失衡和地区差距。因此,本文建议政府应持续推动大数据产业发展,使地方财政更可持续。

关键词：数字经济大数据试验区财政可持续性双重差分法

绿洲灌区不同耕种模式对小麦、玉米光合特性及产量的影响

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分子植物育种 2024年第2期22卷 472-479页

作者：崔文强杨彩红田琨甘肃农业大学林学院兰州730070

为提出有利于小麦、玉米光合作用与产量形成的耕植模式,在河西走廊绿洲灌区进行田间试验,设置免耕(NT)、传统耕作(CT)两种耕作方式,小麦玉米间作(W/M),小麦后插播冬油菜玉米轮作(W-G→M)、小麦玉米轮作(W→M)3种种植模式,测定不同耕作... 详细信息

为提出有利于小麦、玉米光合作用与产量形成的耕植模式,在河西走廊绿洲灌区进行田间试验,设置免耕(NT)、传统耕作(CT)两种耕作方式,小麦玉米间作(W/M),小麦后插播冬油菜玉米轮作(W-G→M)、小麦玉米轮作(W→M)3种种植模式,测定不同耕作种植模式下小麦、玉米的光合特性指标、叶绿素含量及产量状况。结果表明,与CT相比,NTW/M小麦净光合速率、蒸腾速率、气孔导度较CTW/M分别高出54.96%、1.18%、13.79%;NTW/M玉米净光合速率、蒸腾速率较CTW/M分别高出53.19%、25.99%,与轮作相比,NTW/M小麦净光合速率较NTW-G→M、NTW→M分别高出34.81%、32.73%,气孔导度分别高出1.02%,35.62%,蒸腾速率分别高出8.89%、30.92%;与CT相比,NTW/M小麦4叶片、2叶片叶绿素含量较CTW/M分别高出8.93%、3.19%;NTW/M玉米4叶片、2叶片叶绿素含量较CTW/M分别高出20.79%、7.97%,与轮作相比,NTW/M小麦4叶片、2叶片叶绿素含量较NTW-G→M分别高出8.33%、2.10%;NTW/M小麦4叶片、2叶片叶绿素含量较NTW→M分别高出10.33%、12.55%;与CT相比,NTW/M小麦产量较CTW/M高出24.08%;NTW/M玉米产量较CTW/M高出10.16%,与轮作相比,NTW/M小麦产量较NTW-G→M、NTW→M分别高出9.56%、17.07%。因此,NTW/M处理更有利于小麦、玉米进行光合作用实现增产,是河西灌区值得推广的一种耕植模式。

关键词：耕作方式种植模式光合特性叶绿素含量产量

Catalytic Oxidation of Dimethyl Ether to Dimethoxymethane over Cs Modified H_3PW_(12)O_(40)/SiO_2 Catalysts

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Journal of Natural Gas Chemistry 2007年第3期16卷 322-325页

作者： Qingde Zhang Yisheng Tan caihong yang Yizhuo Han Jun Shamoto Noritatsu Tsubaki State Key Laboratory of Coal Conversion Institute of Coal Chemistry Chinese Academy of Sciences Taiyuan 030001 Shanxi China Graduate University of Chinese Academy of Sciences Beijing 100049 China Department of Applied Chemistry University of Toyama Toyama 930-8555 Japan

The attractive utilization route for one-step catalytic oxidation of dimethyl ether to dimethoxymethane was successfully carried out over the H3PW12O40（40%）/SiO2 catalyst, modified by Cs, K, Ni, and V. The Cs modification of H3PW12O40（40%）/SiO2 gave the most promising result of 20% dimethyl ether conversion and 34.8% dimethoxymethane selectivity. Dimethoxymethane could be synthe- sized via methoxy groups decomposed from dimethyl ether through the synergistic effect between the acid sites and the redox sites of Cs modified H3PW12O40（40%）/SiO2.

关键词： dimethyl ether dimethoxymethane catalytic oxidation Cs modified H3PW12O40/SiO2 XRD

新时期粤西青少年民族传统体育文化的传承与发展研究

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当代体育科技 2024年第8期14卷 99-102页

作者：杨彩虹广东石油化工学院体育学院广东茂名525000

为促进新时期粤西青少年民族传统体育文化的传承与发展,该文指出了新时期粤西青少年民族传统体育文化的传承发展现状,并分析了面临的挑战,包括现代化与全球化的影响、教育资源分配不均、传统观念的束缚以及文化认同感的弱化。最后提出... 详细信息

为促进新时期粤西青少年民族传统体育文化的传承与发展,该文指出了新时期粤西青少年民族传统体育文化的传承发展现状,并分析了面临的挑战,包括现代化与全球化的影响、教育资源分配不均、传统观念的束缚以及文化认同感的弱化。最后提出了新时期粤西青少年民族传统体育文化的传承发展的有效措施,包括提升民族传统体育的现代吸引力,应对全球化影响;利用政府和社会资助项目,丰富教育资源;文化教育与意识形态更新,脱离传统观念束缚;强化民族文化教育,强化文化认同感等。上述措施有助于推动民族传统体育文化在粤西地区的传承与发展,以期为相关人员提供实践参考。

关键词：新时期粤西青少年民族体育文化传承与发展

河西灌区不同农作模式对玉米光合作用、叶片结构及产量的影响

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华北农学报 2024年第3期39卷 124-134页

作者：姜晓敏杨彩红崔文强田琨甘肃农业大学林学院甘肃兰州730070

探究不同农作模式对玉米生长发育、光合作用、叶片结构及产量的影响,为优化河西绿洲灌区耕作栽培措施和创建玉米高效种植模式提供理论依据。试验设置免耕(NT)与传统翻耕(CT)2种耕作方式,小麦玉米间作(W/M)、麦后插播冬油菜玉米轮作(W-G... 详细信息

探究不同农作模式对玉米生长发育、光合作用、叶片结构及产量的影响,为优化河西绿洲灌区耕作栽培措施和创建玉米高效种植模式提供理论依据。试验设置免耕(NT)与传统翻耕(CT)2种耕作方式,小麦玉米间作(W/M)、麦后插播冬油菜玉米轮作(W-G→M)、小麦玉米轮作(W-M)3种种植模式,共6个处理。结果表明,与CT相比,NT玉米株高、茎粗和叶面积分别增加6.83%,4.10%,3.97%,间作玉米干物质量高于轮作但差异不显著;叶片色素随生育期呈先增后减的趋势,表现为NT叶绿素a、b与类胡萝卜素较CT分别高11.93%,22.41%,13.43%,且差异显著;NT叶片净光合速率(Pn)与胞间CO_(2)浓度(Ci)较CT分别高9.17%,3.81%,CT处理气孔导度(Gs)和蒸腾速率(Tr)较NT分别高9.95%,1.48%;NT玉米叶片结构较优,叶肉细胞多且排列有序,维管束清晰可见,花环结构较大,栅栏组织与海绵组织丰富,NT叶片较CT厚2.51%,且差异显著;NT玉米较CT增产8.02%,间作产量收益大于轮作(LER>1)。研究发现,免耕玉米生长发育、叶片结构及产量均优于传统耕作,间作比轮作更有利于增产,故可将免耕小麦间作玉米作为该区主要的农作模式进行推广。

关键词：玉米免耕间作光合作用叶片结构产量