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Exploring the impact of Nafion modifier on electrocatalytic CO_(2) reduction over Cu catalyst

Journal of Energy Chemistry 2024年第1期88卷 543-551,I0012页

作者： Yingshi Su Yonghui Cheng Zhen Li Yanjia Cui Caili yang ziyi Zhong Yibing Song Gongwei Wang Lin Zhuang College of Chemistry&Chemical Engineering and Key Laboratory for Preparation and Application of Ordered Structural Materials of Guangdong Province Shantou UniversityShantou 515063GuangdongChina College of Chemistry and Molecular Sciences Hubei Key Lab of Electrochemical Power SourcesWuhan UniversityWuhan 430072HubeiChina The Institute for Advanced Studies Wuhan UniversityWuhan 430072HubeiChina Department of Chemistry Engineering Guangdong Technion-Israel Institute of Technology(GTIIT)Shantou 515063GuangdongChina Technion-Israel Institute of Technology(IIT) Haifa 32000Israel

Nafion as a universal polymer ionomer was widely applied for nanocatalysts electrode ***,the effect of Nafion on electrocatalytic performance was often overlooked,especially for CO_(2)***,the key roles of Nafion for CO_(2)RR were systematically studied on Cu nanoparticles(NPs)*** found that Nafion modifier not only inhibit hydrogen evolution reaction(HER)by decreasing the accessibility of H_(2)O from electrolyte to Cu NPs,and increase the CO_(2)concentration at electrocatalyst interface for enhancing the CO_(2)mass transfer process,but also activate CO_(2)molecule by Lewis acid-base interaction between Nafion and CO_(2)to accelerate the formation of^(*)CO,which favor of C–C coupling for boosting C_(2)product *** to these features,the HER selectivity was suppressed from 40.6%to 16.8%on optimal Cu@Nafion electrode at-1.2 V versus reversible hydrogen electrode(RHE),and as high as 73.5%faradaic efficiencies(FEs)of C_(2)products were achieved at the same applied potential,which was 2.6 times higher than that on bare Cu electrode(~28.3%).In addition,Nafion also contributed to the long-term stability by hinder Cu NPs morphology ***,this work provides insights into the impact of Nafion on electrocatalytic CO_(2)RR performance.

关键词： Nafion modifier CO_(2)reduction Cu nanoparticles In situ ATR-SEIRAS C_(2)product

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Controlling Three-Step and Five-Step Spin Transitions by Polymorphism in an Fe^(Ⅲ) Spin Crossover Complex

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Chinese Journal of Chemistry 2024年第8期42卷 879-886页

作者： Yingying Wu Shuang Peng ziyi Zhang Yue Gao Guangyan Xu Jingwei Dai Zhao-yang Li Masahiro Yamashita School of Materials Science and Engineering Nankai University38 Tongyan RoadHaihe Educational ParkTianjin300350 China State Key Laboratory of Medicinal Chemical Biology Nankai UniversityTianjin300071 China Department of Chemistry Graduate School of ScienceTohoku UniversitySendai980-8578 Japan

Comprehensive Summary,Regulating spin crossover(SCO)behavior,especially controlling the spin transition steps,is an important scientific issue,mainly because people aim to control spin bistability and ***,SCO bistability can be regulated by changing the ligand-modifying species,non-coordinated anions,guest molecules,and metal-ion ***,the control of multistability is extremely challenging,especially in Fe(III)SCO ***,we report that[FeIII(H-5-Br-thsa)(5-Br-thsa)]·H2O(5-Br-thsa=(5-bromo-2-hydroxybenzylidene)hydrazinecarbothioamide),a compound we have reported before,exists in two polymorphic forms:polymorph 1 exhibits three-step SCO,and polymorph 2 shows five-step SCO,with multi-step SCO behavior effectively regulated by *** to single-crystal and powder X-ray diffractometry,polymorphs 1 and 2 crystallize in different space groups during their spin transitions,with two-step symmetry breaking observed(Pbcn→Pnc2→Pbcn for polymorph 1;P21/n→Pn→P21/n for polymorph 2).We realized that the behavior of these two polymorphs depends significantly on the structure,including(i)the average Fe—N bond distance,(ii)deformation of octahedral FeIII atoms,and(iii)distinct crystal packing,which account for the large differences observed in magnetic properties.

关键词： Spin crossover Multi-step spin transition Symmetry breaking Polymorphism Magnetic property

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Doped holographic superconductors in the Gubser–Rocha model

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Communications in Theoretical Physics 2024年第4期76卷 80-92页

作者： ziyi Zhao Wenhe Cai Shuta Ishigaki Department of Physics Shanghai UniversityShanghai 200444China Shanghai Key Laboratory of High Temperature Superconductors Department of PhysicsShanghai UniversityShanghai 200444China

We construct a doped holographic superconductor in the Gubser–Rocha model,and realize a superconducting dome in the middle of the temperature-doping phase *** is worth noting that unlike in previous research,the profile of our dome shrinks inward near to zero *** the numerical observation for the coupling dependence of the phase diagram,we find that the coupling between the two gauge fields plays a crucial role in the formation of the *** also analytically calculate the DC conductivity of the normal phase of the system in the momentum dissipation and obtain resistivity which is proportional to the *** AC conductivity is calculated numerically.

关键词： AdS-CFT correspondence High-Tc superconductor AC/DC conductivities Gubser-Rocha geometry

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VARIATIONAL ANALYSIS FOR THE MAXIMAL TIME FUNCTION IN NORMED SPACES

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Acta Mathematica Scientia 2024年第5期44卷 1696-1706页

作者： ziyi ZHOU Yi JIANG School of Mathematical Sciences Visual Computing and Virtual Reality Key LaboratorySichuan Normal UniversityChengdu610066China

For a general normed vector space,a special optimal value function called a maximal time function is *** covers the farthest distance function as a special case,and has a close relationship with the smallest enclosing ball *** properties of the maximal time function are proven,including the convexity,the lower semicontinuity,and the exact characterizations of its subdifferential formulas.

关键词： maximal time function subdifferential normal cone nonsmooth analysis

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Molecular packing tuning via chlorinated end group enables efficient binary organic solar cells over 18.5%

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Carbon Energy 2024年第3期6卷 196-203页

作者： Yafeng Li Zhenyu Chen Xingzheng Yan ziyi Ge Zhejiang Business Technology Institute NingboZhejiangChina Zhejiang Engineering Research Center for Energy Optoelectronic Materials and Devices Ningbo Institute of Materials Technology and EngineeringChinese Academy of SciencesNingboZhejiangChina Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of SciencesBeijingChina

Designing novel nonfullerene acceptors(NFAs)is of vital importance for the development of organic solar cells(OSC).Modification on the side chain and end group are two powerful tools to construct efficient ***,based on the high-performance L8BO,we selected 3-ethylheptyl to substitute the inner chain of 2-ethylhexyl,obtaining the backbone of *** we introduced different halogen atoms of fluorine and chlorine on 2-(3-oxo-2,3-dihydro-1Hinden-1-ylidene)malononitrile end group(EG)to construct efficient NFAs named BON3-F and BON3-Cl,*** donor D18 was chosen to combine with two novel NFAs to construct OSC ***,D18:BON3-Cl-based device shows a remarkable power conversion efficiency(PCE)of 18.57%,with a high open-circuit voltage(V_(OC))of 0.907 V and an excellent fill factor(FF)of 80.44%,which is one of the highest binary PCE of devices based on D18 as the ***,BON3-F-based device shows a relatively lower PCE of 17.79%with a decreased FF of 79.05%.The better photovoltaic performance is mainly attributed to the red-shifted absorption,higher electron and hole mobilities,reduced charge recombination,and enhanced molecular packing in the D18:BON3-Cl ***,we performed stability tests on two binary systems;the D18:BON3-Cl and D18:BON3-F devices maintain 88.1%and 85.5%of their initial efficiencies after 169 h of storage at 85°C in an N2-filled glove box,*** work demonstrates the importance of selecting halogen atoms on EG and provides an efficient binary system of D18:BON3-Cl for further improvement of PCE.

关键词： binary organic solar cell chlorinated end group molecular packing

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经腹超声监视引导下宫腔镜清宫术治疗宫角妊娠的临床疗效

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检验医学与临床 2024年第2期21卷 192-195页

作者：彭亮舒华宝吴珊燕吴胜华杨子熠王小娟吴志华鹰潭一八四医院超声诊断科江西鹰潭335000 联勤保障部队第908医院超声科江西南昌330000

目的探讨经腹超声监视引导下宫腔镜清宫术治疗宫角妊娠的临床疗效。方法选取2021年1月至2022年12月鹰潭一八四医院收治的83例宫角妊娠患者作为研究对象,采用随机数字表法分为对照组(41例)和观察组(42例)。对照组采用常规腹腔镜手术治疗... 详细信息

目的探讨经腹超声监视引导下宫腔镜清宫术治疗宫角妊娠的临床疗效。方法选取2021年1月至2022年12月鹰潭一八四医院收治的83例宫角妊娠患者作为研究对象,采用随机数字表法分为对照组(41例)和观察组(42例)。对照组采用常规腹腔镜手术治疗,观察组采用经腹超声监视引导下宫腔镜清宫术治疗。比较两组患者手术指标,包括手术时间、术中出血量、术后阴道出血时间、住院时间、治疗费用,以及术前及术后24 h血清人绒毛膜促性腺激素(β-HCG)水平、术后β-HCG恢复正常时间、一次手术成功率和子宫复旧情况。结果观察组患者术中出血量少于对照组,手术时间及术后阴道出血时间、住院时间、β-HCG恢复至正常时间均短于对照组,治疗费用低于对照组,差异均有统计学意义(P0.05);两组患者术后24 h血清β-HCG水平均低于术前,且观察组患者低于对照组,差异均有统计学意义(P0.05)。结论经腹超声监视引导下宫腔镜清宫术治疗宫角妊娠的一次手术成功率、术后子宫复旧良好率高,相对于常规腹腔镜手术,该术式具有手术时间短、术中出血量少、术后β-HCG恢复至正常时间快、治疗费用低等优势,值得临床推广使用。

关键词：经腹超声监视引导下宫腔镜清宫术宫角妊娠人绒毛膜促性腺激素临床疗效手术成功率腹腔镜手术

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Highly efficient ternary organic solar cells with excellent open-circuit voltage and fill factor via precisely tuning molecular stacking and morphology

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Science China Chemistry 2024年第3期67卷 963-972页

作者： Dinghong Sun Zhenyu Chen Jianfeng Zhang Wei Song Jingyu Shi Jintao Zhu Yuanyuan Meng Fei Jin Shuncheng yang ziyi Ge Faculty of Electrical Engineering and Computer Science Ningbo UniversityNingbo 315211China Faculty of Material Science and Chemical Engineering Ningbo UniversityNingbo 315211China Zhejiang Provincial Engineering Research Center of Energy Optoelectronic Materials and Devices Ningbo Institute of Materials Technology&EngineeringChinese Academy of SciencesNingbo 315201China Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of Sciences Beijing 100049China Department of Chemical and Environmental Engineering University of Nottingham NingboNingbo 315100China

The micro-morphology and molecular stacking play a key role in determining the charge transport process and nonradiative energy loss, thus impacting the performances of organic solar cells(OSCs). To address this issue, a non-fullerene acceptor PhC6-IC-F with alkylbenzene side-chain, possessing optimized molecular stacking, complementary absorption spectra and forming a cascade energy level alignment in the PM6:BTP-eC9 blend, is introduced as guest acceptor to improve efficiency of ternary OSCs. The bulky phenyl in the side-chain can regulate crystallinity and optimizing phase separation between receptors in ternary blend films, resulting in the optimal phase separations in the ternary films. As a result, high efficiencies of 18.33% as photovoltaic layer are obtained for PhC6-IC-F-based ternary devices with excellent fill factor(FF) of 78.92%. Impressively, the ternary system produces a significantly improved open circuit voltage(V_(oc)) of 0.857 V compared with the binary device,contributing to the reduced density of trap states and suppressed non-radiative recombination result in lower energy loss. This work demonstrates an effective approach for adjusting the aggregation, molecular packing and fine phase separation morphology to increase V_(oc) and FF, paving the way toward high-efficiency OSCs.

关键词： alkylbenzene side-chain morphology regulation ternary blends organic solar cells

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Alcohol-dispersed polymer complex as an effective and durable interface modifier for n-i-p perovskite solar cells

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Journal of Energy Chemistry 2024年第6期93卷 243-252,I0007页

作者： Chang Shi Jiangling Li Shuping Xiao ziyi Wang Wuchen Xiang Rui Wu yang Liu Yinhua Zhou Weijun Ke Guojia Fang Pingli Qin Hubei Key Laboratory of Optical Information and Pattern Recognition Wuhan Institute of TechnologyWuhan 430205HubeiChina Wuhan National Laboratory for Optoelectronics Huazhong University of Science and TechnologyWuhan 430074HubeiChina School of Physics and Technology Key Laboratory of Artificial Micro-and Nano-structures of the Ministry of Education and School of Physics and TechnologyWuhan UniversityWuhan 430072HubeiChina

Abundant interfacial defects remain a significant challenge that hampers both the efficiency and stability of perovskite solar cells(PSCs).Herein,an alcohol-dispersed conducting polymer complex,denoted as PEDOT:F(Poly(3,4-ethylene dioxythiophene):Perfluorinated sulfonic acid ionomers),is introduced into the interface between perovskite and hole transporting layer in regular-structured ***:F serves as a multi-functional interface layer(filling grain boundaries and covering perovskite's grain-surface)to achieve a robust interaction with organic groups within perovskites,which could induce a structural transformation of PEDOT to increase its conductivity for the efficient ***,the strong interaction between PEDOT and perovskites could promote an effective coupling of undercoordinated Pb~(2+)ions with the lone electron pairs near O&S atoms in PEDOT molecules,thereby enhancing defect ***,PEDOT:F with inherent hydrophobic properties prevents effectively moisture invasion into perovskites for the improved long-term stability of the ***,the PEDOT:F-based PSCs achieved a champion efficiency of 24.81%,and maintained ca.92%of their initial efficiency after 7680 h of storage in a dry air environment,accompanied by the enhanced photothermal stability.

关键词： Alcohol-dispersed conducting polymer complex Interface passivation Grain boundaries Device stability Perovskite solar cells

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The MYB transcription factor OsMYBxoc1 regulates resistance to Xoc by directly repressing transcription of the iron transport gene OsNRAMP5 in rice

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Plant Communications 2024年第6期5卷 230-245页

作者： Haimiao Zhang Baolong Sun Wei Wu yang Li ziyi Yin Chongchong Lu Haipeng Zhao Lingguang Kong Xinhua Ding State Key Laboratory of Crop Biology Shandong Provincial Key Laboratory of Agricultural MicrobiologyCollege of Plant ProtectionShandong Agricultural UniversityTai’an 271018China

Bacterial leaf streak caused by Xanthomonas oryzae ***(Xoc)is a continuous threat to rice cultivation,leading to substantial yield losses with socioeconomic *** ions are essential mineral nutrients for plant growth,but little information is available on how they influence mechanisms of rice immunity against ***,we investigated the role of the myeloblastosis-related(MYB)transcriptional repressor OsMYBxoc1 in modulation of rice resistance through control of iron ion *** of OsMYBxoc1 significantly increased rice resistance,whereas OsMYBxoc1 RNA-interference lines and knockout mutants showed the opposite *** of OsMYBxoc1 expression dampened the immune response induced by pathogen-associated molecular *** demonstrated that OsMYBxoc1 binds specifically to the OsNRAMP5 promoter and represses transcription of ***5,a negative regulator of rice resistance to bacterial leaf streak,possesses metal ion transport activity,and inhibition of OsMYBxoc1 expression increased the iron ion content in *** of the iondependent H2O2 scavenging enzyme catalase was increased in plants with suppressed expression of OsMYBxoc1 or overexpression of *** found that iron ions promoted Xoc infection and interfered with the production of reactive oxygen species induced by *** type Ⅲ effector XopAK directly inhibited OsMYBxoc1 transcription,indicating that the pathogen may promote its own proliferation by relieving restriction of iron ion transport in *** addition,iron complemented the pathogenicity defects of the RS105_DXopAK mutant strain,further confirming that iron utilization by Xoc may be dependent upon *** conclusion,our study reveals a novel mechanism by which OsMYBxoc1 modulates rice resistance by regulating iron accumulation and demonstrates that Xoc can accumulate iron ions by secreting the effector XopAK to promote its own infection.

关键词： pathogen effector plant immunity bacterial leaf streak metal ion

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急诊创伤性血气胸在床边超声引导下精准化穿刺置管引流术的治疗效果

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检验医学与临床 2024年第9期21卷 1245-1249页

作者：彭亮郭剑查波辉吴珊燕舒华宝吴胜华杨子熠王小娟江西省鹰潭一八四医院超声诊断科江西鹰潭335000 江西省鹰潭一八四医院急诊科江西鹰潭335000

目的分析急诊创伤性血气胸在床边超声引导下精准化穿刺置管引流术的治疗效果。方法选择该院2022年1月至2023年1月收治的急诊创伤性血气胸患者60例作为研究对象,采用随机数字表法将其分为对照组与观察组,每组30例。对照组患者接受传统胸... 详细信息

目的分析急诊创伤性血气胸在床边超声引导下精准化穿刺置管引流术的治疗效果。方法选择该院2022年1月至2023年1月收治的急诊创伤性血气胸患者60例作为研究对象,采用随机数字表法将其分为对照组与观察组,每组30例。对照组患者接受传统胸腔封闭式引流术治疗,观察组患者接受床边超声引导下精准化穿刺置管引流术治疗。比较两组患者临床疗效、置管时间、操作时间、恢复情况[止痛药物使用量、置管引流量、置管引流时间和住院时间]、炎症因子[干扰素-γ(IFN-γ)、白细胞介素-1β(IL-1β)、细胞间黏附分子-1(ICAM-1)]水平、肺功能[第1秒用力呼气量(FEV_(1))、用力肺活量(FVC)、每分钟最大通气量(MVV)、残气量(RV)]及并发症发生情况。结果观察组临床总有效率为96.67%,高于对照组的73.33%,差异有统计学意义(P<0.05)。观察组患者的置管时间[(5.98±0.31)d]长于对照组[(3.57±0.24)d],而操作时间[(8.97±0.51)min]短于对照组[(11.28±0.47)min],差异均有统计学意义(P<0.05)。观察组止痛药物使用量和置管引流量小于对照组(P<0.05),置管引流时间和住院时间均短于对照组(P<0.05)。引流3 d,两组血清IFN-γ、IL-1β、ICAM-1水平低于术后即刻,且观察组血清IFN-γ、IL-1β、ICAM-1水平低于对照组,差异均有统计学意义(P<0.05)。术后1个月,两组FEV_(1)、FVC、MVV高于术前,而RV低于术前,差异均有统计学意义(P<0.05);观察组术后1个月FEV_(1)、FVC、MVV高于对照组,而RV低于对照组,差异均有统计学意义(P<0.05)。观察组并发症发生率为10.00%(3/30),低于对照组的36.67%(11/30),差异有统计学意义(P<0.05)。结论在床旁超声引导下精准化穿刺置管引流术治疗急诊创伤性血气胸,可以提升疗效,减轻术后炎症反应,改善肺功能,降低术后并发症发生率,利于患者早日康复。

关键词：急诊创伤性血气胸超声穿刺置管引流术肺功能

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