Browse Articles

Display Method:      

Display Method:          |     

综述
Research progress of interface regulation strategies and applications of two‑dimensional MXenes
Shasha SUN , Weichun HUANG , Mengke WANG
2025, 41(8): 1465-1482  doi: 10.11862/CJIC.20240430
[Abstract](5) [FullText HTML] [PDF 12060KB](0)
Abstract:
2D过渡金属碳/氮化物或碳氮化物(MXenes)因其独特的物理和化学性质,在电学、光学、催化和环境等多个领域展现出了广泛的应用潜力。这些独特的性质为MXenes材料在各个领域的创新应用奠定了坚实的基础。近年来,2D MXenes纳米材料的界面调控策略受到了广泛关注。研究者通过不同的方法,如表面基团控制、表面吸附、表面复合和交联等,对MXenes进行了深入的改性研究。本文综述了MXenes的界面调控策略及其功能化材料在能量存储、催化、光电探测、电磁屏蔽、污染物吸附和生物医药领域的研究进展。
论文
Design and antitumor properties of dehydroabietic acid functionalized cyclometalated iridium(Ⅲ) complex
Hanxue LIU , Shijie LI , Meng REN , Xuling XUE , Hongke LIU
2025, 41(8): 1483-1494  doi: 10.11862/CJIC.20250031
[Abstract](2) [FullText HTML] [PDF 5441KB](0)
Abstract:
将天然产物脱氢松香酸(DHA)引入环金属铱中,成功合成了一种新型环金属铱配合物CycIr-DHA,并通过 1H NMR对配体及配合物进行表征。该配合物在多种肿瘤细胞株中表现出显著的抗肿瘤活性,尤其是对人乳腺癌细胞(MCF-7)的抑制效果最为明显,其半数抑制浓度(IC50)仅为2.5 μmol·L-1,优于传统化疗药物顺铂。实验结果显示,CycIr-DHA主要在MCF-7的线粒体中富集,能够显著提高细胞内活性氧水平,导致线粒体功能障碍。此外,该配合物还能调节凋亡相关蛋白(Bax和Bcl-2)的表达,促进细胞凋亡,并上调LC3-Ⅱ蛋白,诱导细胞自噬。在3D细胞球模型中,CycIr-DHA显著抑制了细胞球的生长。
Construction and hydrogen peroxide-activated chemodynamic activity of ferrocene?benzoselenadiazole conjugate
Jichao XU , Ming HU , Xichang CHEN , Chunhui WANG , Leichen WANG , Lingyi ZHOU , Xing HE , Xiamin CHENG , Su JING
2025, 41(8): 1495-1504  doi: 10.11862/CJIC.20250144
[Abstract](1) [FullText HTML] [PDF 6489KB](0)
Abstract:
本文报道了一种基于二茂铁与苯并硒二唑(SeNBD)偶联物的前药FcNH-SeNBD,用于肿瘤细胞化学动力学治疗(CDT)与荧光成像。FcNH-SeNBD利用肿瘤细胞中过表达的过氧化氢(H2O2)氧化二茂铁发生芬顿反应,高效生成羟基自由基(·OH),诱导肿瘤细胞凋亡。与此同时,二茂铁的氧化阻断了其与苯并硒二唑之间的光致电子转移(PET)效应,使得原本被猝灭的SeNBD荧光得以恢复,实现了荧光信号“Off-On”的转变,用于实时监测前药在肿瘤细胞中的活化与富集,便于治疗效果的预测与评估。体外实验表明 FcNH-SeNBD对肝癌细胞HepG2[IC50=(7.95±0.98) μg·mL-1]和结直肠癌细胞HCT116[IC50=(15.74±1.5) μg· mL-1]具有显著的选择性杀伤作用,而对正常结肠上皮细胞NCM-460无显著毒性(IC50>100 μg·mL-1)。机制研究证实,FcNH-SeNBD通过激活caspase-3依赖性凋亡通路发挥对肿瘤细胞的杀伤作用。细胞成像实验表明 FcNH-SeNBD可在肿瘤细胞中富集并产生强烈的红色荧光。
Room‑temperature solid‑state synthesis, structure, and third‑order nonlinear optical properties of phosphine‑ligand‑protected silver thiolate clusters
Xiaohang JIN , Qi LIU , Jianping LANG
2025, 41(8): 1505-1512  doi: 10.11862/CJIC.20250125
[Abstract](1) [FullText HTML] [PDF 2508KB](0)
Abstract:
将[Ag9(Tab)8(MeCN)8]2(PF6)18·4MeCN(Tab=4-(三甲基铵)苯硫酚盐,MeCN=乙腈)与三苯基膦(L1)和二苯基-2-吡啶膦(L2)分别进行固相研磨反应,得到的固体粉末经溶剂溶解、离心分离后,通过溶剂扩散法结晶得到了2个膦配体保护的银硫醇团簇[Ag7(Tab)6(L1)6Cl](PF6)6·8DMF (1)和[Ag17(Tab)20(L2)2](PF6)17·32DMF (2)。对2个簇合物分别进行了单晶X射线衍射、粉末X射线衍射、红外、紫外可见、热重和元素分析表征。单晶X射线衍射分析表明,2个簇合物均由有机磷配体和Tab配体共同保护,且簇合物2结构表面的二苯基-2-吡啶膦配体的P和N原子同时参与了配位。Z扫描技术测试结果表明2个簇合物在溶液中具有一定的三阶非线性光学响应。
Photoreaction characteristics and luminescence modulation in phosphine-anthracene-based Au(Ⅰ) and Ir(Ⅲ) complexes
Xuyu WANG , Xinran XIE , Dengke CAO
2025, 41(8): 1513-1522  doi: 10.11862/CJIC.20250113
[Abstract](3) [FullText HTML] [PDF 5034KB](0)
Abstract:
合成了膦蒽配体1, 8-双(二苯基磷)蒽(Hbdpa)及其配合物[Au(Hbdpa)2]PF6 (1)和[Ir(tpy)(bdpa)](PF6)2 (2),其中tpy=2,2′∶6′,2″-三联吡啶。在光照作用下,这些化合物发生光化学反应,生成Hbdpa-2O、[Au(Hbdpa-O)2]PF6 (1-O)和[Ir(tpy)(bdpa-OH)](PF6)2 (2-OH)。通过核磁、质谱和单晶X射线衍射表征了这些化合物的结构。讨论了化合物Hbdpa及其配合物12的光化学反应特性以及相关的发光行为调控。研究结果表明,Au(Ⅰ)和Ir(Ⅲ)的配位显著提高了配体Hbdpa的光反应活性。化合物2是首例能发生蒽基去芳构化反应的铱配合物。
Antitumor and antibacterial activities of pyridyl Schiff base indium and dysprosium complexes
Xiaotong LU , Pan ZHANG , Zijie ZHAO , Lei HUANG , Hongwei ZUO , Lili LIANG
2025, 41(8): 1523-1532  doi: 10.11862/CJIC.20250073
[Abstract](3) [FullText HTML] [PDF 4967KB](0)
Abstract:
N′-[(1E)-吡啶-2-亚甲基]吡啶-4-碳酰肼(HL)配体与铟离子/镝离子合成了2种金属配合物[In(HL)(NO3)3] (1)和[Dy(L)(CH3OH)0.89(H2O)1.11(NO3)2]·0.11H2O (2)。单晶X射线衍射表明,配合物12均具有由1个配体连接1个金属离子形成的零维单核结构。体外抗增殖活性研究表明,配合物1对人肝癌细胞SMMC-7721、人乳腺癌细胞MDA-MB-231及人非小细胞肺癌细胞A549的抗肿瘤活性均优于顺铂;配合物2对SMMC-7721及A549的抗肿瘤活性也优于顺铂。伤口愈合实验显示配合物12可以抑制A549细胞迁移能力,且呈浓度依赖性。此外,配合物2对大肠杆菌具有显著的抑菌效果,抑菌圈直径达到22 mm。
Raman spectroscopic quantitative study of the melt microstructure in binary Li2O-GeO2 functional crystals
Yufan ZHAO , Jinglin YOU , Shixiang WANG , Guopeng LIU , Xiang XIA , Yingfang XIE , Meiqin SHENG , Feiyan XU , Kai TANG , Liming LU
2025, 41(8): 1533-1544  doi: 10.11862/CJIC.20250063
[Abstract](3) [FullText HTML] [PDF 6391KB](0)
Abstract:
采用固相烧结法制备了Li4GeO4、Li6Ge2O7、Li2GeO3和Li2Ge2O5四种Li2O-GeO2二元系晶体,并通过原位高温拉曼光谱技术结合理论计算的方法对晶态到熔态的结构演变过程以及熔体微结构进行定性和定量分析。研究表明:Li4GeO4、Li6Ge2O7和Li2GeO3熔体分别由[GeO4]4-、[Ge2O7]6-、[GeO3]2-和Li+构成,而Li2Ge2O5晶体在升温至熔融状态过程中由[GeO4]4-四面体形成的三维网络结构逐渐向更小的[Ge3O9]6-三元环递变。另外,通过量子化学从头计算法对团簇结构单元进行了设计、优化和计算,并将理论计算模拟与实验相结合,提出了一种校正熔体实验拉曼光谱的新方法。我们通过引入精细结构概念并利用高斯函数对拉曼光谱中[GeO4]4-四面体非桥氧的伸缩振动包络峰进行了分峰解谱,得到了这4种晶体在熔融状态下的不同结构(Qii表示每个[GeO4]4-四面体中桥氧的个数,i=0~4)单元含量的定量分布。
Bimetallic MOF-74 and derivatives: Fabrication and efficient electrocatalytic biomass conversion
Xinlong XU , Chunxue JING , Yuzhen CHEN
2025, 41(8): 1545-1554  doi: 10.11862/CJIC.20250046
[Abstract](3) [FullText HTML] [PDF 5045KB](0)
Abstract:
为开发在温和条件下高效、高选择性氧化5-羟甲基糠醛(HMF)的多功能催化材料和反应体系,构筑了双金属有机框架(BMOF)材料及其衍生材料,用于低电压下的HMF电催化氧化。采用溶剂热法合成了双金属CoNi-MOF-74,并采用2种方式制备相应的催化材料。其一,对CoNi-MOF-74进行热解处理,制得石墨碳层包覆、碳基体稳定的CoNi合金(CoNi@C)纳米颗粒;其二,在电催化过程中,CoNi-MOF-74发生原位水解反应,生成相应的氢氧化物(CoNi(OH)2),进而将其作为电极材料使用。研究发现,当Co、Ni的物质的量之比设定为1∶3时,所制备的Co1Ni3-MOF-74材料在800 ℃进行热解处理后,生成的Co1Ni3@C在低电位下对HMF电催化氧化表现出优异的催化活性和高的2, 5-呋喃二甲酸(FDCA)选择性(87.26%)。而Co1Ni1-MOF-74(Co、Ni物质的量之比为1∶1)电解时原位生成的Co0.5Ni0.5(OH)2对中间产物5-(羟甲基)呋喃-2-羧酸(HMFCA)具有很高的选择性(88.59%)和高转化率。这主要得益于衍生材料较好的孔隙结构、Co和Ni双金属之间的协同作用和石墨碳的良好导电性。
Waste cotton fabric-ased porous carbon materials: Preparation and wave-absorbing properties
Qianqian ZHU , Lihui XU , Hong PAN , Chengjian YAO , Hong ZHAO , Nan MA , Xiaolin SHI , Zihan SHEN , Weijun ZHANG , Zhongjian WANG
2025, 41(8): 1555-1564  doi: 10.11862/CJIC.20250040
[Abstract](1) [FullText HTML] [PDF 9677KB](0)
Abstract:
以废旧棉织物为原料,氯化锌为活化剂,采用一步活化-炭化法制备具有丰富孔隙结构的废旧棉织物基炭吸波材料(CCF),并探讨了不同氯化锌质量分数对CCF吸波性能的影响。结果表明:氯化锌能够有效丰富CCF的孔隙结构,提高其吸波效果。在炭化温度为700 ℃(N2气氛下)、氯化锌质量分数为10%时制备的CCF-10的比表面积高达1 310 m2·g-1,其在厚度为2.0mm时的最小反射损耗达-35.02 dB,有效吸收带宽为5.6 GHz。
MoO3/cellulose derived carbon aerogel: Fabrication and performance as cathode for lithium-sulfur battery
Yan'e LIU , Shengli JIA , Yifan JIANG , Qinghua ZHAO , Yi LI , Xinshu CHANG
2025, 41(8): 1565-1573  doi: 10.11862/CJIC.20250054
[Abstract](3) [FullText HTML] [PDF 6185KB](0)
Abstract:
将MoO3纳米片与2,2,6,6-四甲基哌啶氧化物(TEMPO)氧化的纤维素纳米纤维(TEMPO-CNF)复合,并经过高温碳化工艺制备了MoO3/T-CNF碳化复合气凝胶材料,其中T-CNF指TEMPO-CNT碳化后得到的多孔碳。MoO3/T-CNF具有高导电性、发达的孔隙结构和大的比表面积等特性,将其作为锂硫电池阴极时,能够有效吸附多硫化物,抑制穿梭效应,并缓解充放电过程中的体积膨胀。其中,最佳样品MoO3/T-CNF-3在0.1C倍率下的最高放电比容量达到1 721.8 mAh·g-1,且在200次循环后仍能保持84.8%的容量保持率和99.6%的库仑效率。
Thermal regeneration of biogas residue biochar and the ammonia nitrogen adsorption properties
Yang ZHOU , Lili YAN , Wenjuan ZHANG , Pinhua RAO
2025, 41(8): 1574-1588  doi: 10.11862/CJIC.20250032
[Abstract](1) [FullText HTML] [PDF 8046KB](0)
Abstract:
在研究沼渣生物炭吸附氨氮(NH4+)的特性及机理的基础上,我们重点探讨了饱和沼渣生物炭的热再生性能,并研究了热再生参数(再生温度、再生时间、升温速率、保护气以及气体流速)对生物炭吸附性能的影响机制。沼渣生物炭对NH4+的吸附量可达19.12 mg·g-1,符合Langmuir模型,吸附机理主要是表面配位和离子交换反应。最佳热再生参数如下:温度为200 ℃,保护气为N2,流速为0.5 L·min-1,以5 ℃·min-1的升温速率再生1 h。饱和生物炭首次吸附再生率为99.59%,经10次吸附-再生循环后,吸附再生率仍达89.55%,失重率小于5%。通过热重-红外联用仪(TG?IR)、傅里叶变换红外光谱(FTIR)、X射线光电子能谱(XPS)、比表面及孔隙度分析和扫描电子显微镜(SEM)等多种手段进行表征,结果表明,多次循环热再生可破坏饱和生物炭表面的C=O、—OH和—COOH等含氧官能团,同时部分吸附位点被永久占用,导致吸附再生率逐渐下降。热再生可实现饱和生物炭中绝大部分氨氮的热解脱附,有效恢复生物炭孔隙结构和表面含氧官能团的吸附位点。
Mn-doped carbon quantum dots/Fe-doped ZnO flower-like microspheres heterojunction: Construction and photocatalytic performance
Tong WANG , Qinyue ZHONG , Qiong HUANG , Weimin GUO , Xinmei LIU
2025, 41(8): 1589-1600  doi: 10.11862/CJIC.20250011
[Abstract](2) [FullText HTML] [PDF 11015KB](0)
Abstract:
首先通过水热法合成了Fe掺杂ZnO(ZnFeO)花状微球,然后采用物理沉积法将Mn掺杂碳量子点(Mn?CQDs)均匀负载于ZnFeO表面,成功构筑了Mn?CQDs/ZnFeO异质结复合材料。结合粉末X射线衍射、扫描电子显微镜、透射电子显微镜、X射线光电子能谱、紫外可见漫反射光谱和N2脱附-吸附分析,探究了该材料结构与光催化性能的关系。结果表明,Mn掺杂显著提升了CQDs的光吸收范围和荧光稳定性;Mn和Fe双掺杂协同拓展了Mn?CQDs/ZnFeO的可见光吸收边,提高了吸收强度,促进了界面光生电子-空穴对的分离,改善了光催化性能。氙灯光照80 min时,复合材料对甲基橙(MO)的降解率达到91.4%,经过4次循环实验后,降解率仍保持在80.7%。自由基捕获实验证实,光生空穴(h+)和超氧自由基(·O2-)是MO光降解过程中的主要活性物种。
Synthesis, structure, and anticancer activity of two dialkyltin complexes constructed based on 2, 2′-bipyridin-6, 6′-dicarboxylic acid
Lifang HE , Wenjie TANG , Yaoze LUO , Mingsheng LIANG , Jianxin TANG , Yuxuan WU , Fuxing ZHANG , Xiaoming ZHU
2025, 41(8): 1601-1609  doi: 10.11862/CJIC.20250012
[Abstract](1) [FullText HTML] [PDF 3277KB](0)
Abstract:
合成了二(邻氟苄基)锡-2,2′-联吡啶-6,6′-二甲酸(H2bpdc)配合物[Sn(o-F-C6H4CH2)2(bpdc)(H2O)]2·H2O (1)和二正丁基锡-2,2′-联吡啶-6,6′-二甲酸配合物[Sn(n-C4H9)2(bpdc)(H2O)]·H2O (2)。通过元素分析、红外光谱、核磁共振谱(1H、13C和119Sn)、差热分析进行了表征;用单晶X射线衍射方法测定了配合物的晶体结构,对其结构进行量子化学计算,测定了配合物对人胃腺癌细胞(AGS)、人急性淋巴母细胞白血病细胞(MOLT4)和人乳腺癌细胞(MDA-MB-231)的体外抑制活性。结果显示: 配合物均为单核分子,中心锡原子均为七配位的畸变五角双锥构型;除配合物2对MDA-MB-231的抑制活性相对较弱外,配合物对其它细胞均显示了较强的抑制活性。
Ni-doped WP2 nanowire self-standingelectrode: Preparation and alkaline electrocatalytic hydrogen evolution property
Jianqiao ZHANG , Yang LIU , Yan HE , Yaling ZHOU , Fan YANG , Shihui CHENG , Bin XIA , Zhong WANG , Shijian CHEN
2025, 41(8): 1610-1616  doi: 10.11862/CJIC.20240444
[Abstract](4) [FullText HTML] [PDF 4431KB](0)
Abstract:
首先采用水热法在碳布(CC)上生长了Ni掺杂WO3纳米线(Ni-WO3 NWs/CC),然后利用高真空固相磷化法将其磷化,得到CC表面生长Ni掺杂WP2纳米线复合材料(Ni-WP2 NWs/CC)。研究其电催化析氢性能发现,Ni掺杂能够有效降低电催化析氢反应中的过电位。其中,当Ni、W物质的量之比为10%时制备得到的10%Ni-WP2 NWs/CC表现出最佳的催化性能。在碱性条件下,当电流密度为10和100 mA·cm-2时,10%Ni-WP2 NWs/CC所需的过电位分别为115和190 mV。经过Ni掺杂后,10%Ni-WP2 NWs/CC的电化学活性表面积明显增加。此外,在长时间的电催化条件下,该催化剂依然能保持良好的工作稳定性。
Preparation of CeO2 by starch template method for photo-Fenton degradation of methyl orange
Junjie TANG , Yunting ZHANG , Zhengjiang LIU , Jiani WU
2025, 41(8): 1617-1631  doi: 10.11862/CJIC.20240420
[Abstract](2) [FullText HTML] [PDF 7843KB](0)
Abstract:
以六水合硝酸铈(Ce(NO3)3·6H2O)和可溶性淀粉(ST)为原料,通过生物模板法制备了CeO2非均相光芬顿催化剂(ST-CeO2)。采用X射线粉末衍射(XRD)、傅里叶变换红外光谱(FTIR)、拉曼光谱、固体紫外可见漫反射光谱(UV-Vis DRS)和X射线光电子能谱(XPS)对催化剂进行表征。FTIR和Raman光谱证实了Ce—O键及氧空位的存在。UV-Vis DRS显示其在紫外和可见光区域有强吸收,XPS光谱分析表明催化剂表面存在Ce3+和Ce4+的混合价态,这可有效促进光生电荷的分离和H2O2的活化。甲基橙(MO)降解结果表明,ST-CeO2在紫外光下照射60 min时对MO染料的降解率可达82.8%;加入H2O2后,其在60 min时对MO染料的降解率可达99.7%,而且重复回收利用5次后仍然保持优良的催化性能。自由基捕获实验证明空穴(h+)和羟基自由基(·OH)是在MO染料降解反应中起主导作用的活性物质,而超氧自由基(·O2-)起次要作用。此外还详细探讨了ST-CeO2光芬顿降解MO染料的机理。
Preparation and performance of nickel doped ruthenium dioxide electrocatalyst for oxygen evolution
Hailang JIA , Pengcheng JI , Hongcheng LI
2025, 41(8): 1632-1640  doi: 10.11862/CJIC.20240398
[Abstract](2) [FullText HTML] [PDF 8605KB](0)
Abstract:
以ZIF-8作为牺牲模板剂,利用其固有的多面体空间结构特征来抑制纳米颗粒催化剂的聚积行为,同时通过进一步引入过渡金属镍(Ni)元素对二氧化钌(RuO2)进行掺杂,以达到优化材料电子结构,提高活性位点的本征活性的目的,从而制备出粒径为8~10 nm的高性能析氧电催化剂(Ni-RuO2)。结果表明,Ni-RuO2具有优异的析氧反应(OER)催化性能,超越了商业RuO2。在碱性条件下,Ni-RuO2在电流密度为10 mA·cm-2时所需的过电位仅为257 mV,且具有较高的电化学活性面积、较快的电荷转移能力和良好的循环稳定性,优于商业RuO2和未进行Ni掺杂的RuO2。将Ni-RuO2作为阳极进行全解水测试时,其获得10 mA·cm-2的电流密度时仅需要1.476 V的分解电压。
Articles
Praseodymium-organic framework with 4, 4′-oxybis(benzoic acid): Rare broken layer structure, antibacterial activity, and sensing for Cd2+ ions
Peipei CUI , Yawen ZHENG , Pan LI , Peiyan GUAN , Zhaohong QIAN
2025, 41(8): 1641-1649  doi: 10.11862/CJIC.20250152
[Abstract](1) [FullText HTML] [PDF 2647KB](0)
Abstract:
A novel 3D metal-organic framework (MOF) [Pr2(L)3(H2O)5·H2O]n (Pr-1), (H2L=4, 4′-oxybis(benzoic acid)) with a rare structure of broken layer net, was constructed under the condition of solvothermal synthesis. The structure and crystal net were analyzed and characterized. This rod net of Pr-1 is new to both RCSR and ToposPro databases, and is named as rn-12 as suggested. Due to the luminescent properties of H2L and Pr(Ⅲ), the solid-state fluorescence property and sensing performance (solvents and metal ions) of Pr-1 were investigated. The sensing experiments indicated that Pr-1 could act as a fluorescence sensor to detect Cd2+ ions with good sensitivity. In addition, antibacterial activities show that Pr-1 exhibited stronger antibacterial activity against Escherichia coli (E. coli), Staphylococcus aureus (S. aureus), and Bacillus subtilis (B. subtilis) compared to synthetic materials.
cis/trans-Octahedral configuration induced topologically different MOFs: Syntheses, structures, and Hirshfeld surface analyses
Ri PENG , Yingxiang BAI , Yuxin XIE , Dunru ZHU
2025, 41(8): 1650-1660  doi: 10.11862/CJIC.20250143
[Abstract](1) [FullText HTML] [PDF 4743KB](0)
Abstract:
Two metal-organic frameworks (MOFs), trans-[Co(L)(μ2-H2O)(H2O)2]·2H2O (1) and cis-[Mn(L)(Bipy)] (2) (H2L=2, 2′-dimethyl-4, 4′-biphenyldicarboxylic acid, Bipy=4, 4′-bipyridine), have been synthesized and characterized by FTIR, thermogravimetric analysis (TGA), powder and single crystal X-ray diffraction. MOF 1 crystallizes in the triclinic system with a P1 space group and contains two crystallographically different Co(Ⅱ) ions. Each trans-[CoO6] octahedron is connected by μ2-H2O and L2- ligand with a bis(unidentate) coordination mode to produce a 2D sql topological network. MOF 2 crystallizes in the monoclinic system with a C2/c space group. The Mn(Ⅱ) cation adopts a cis-[MnO4N2] octahedron as a 6-connected node and is linked by L2- ligand as a 4-connected node to generate a binodal (4, 6)-connected 3D fsc framework. The intermolecular interactions in 1 and 2 have been investigated by 3D Hirshfeld surface analyses and 2D fingerprint plots to reveal that the main interactions are H…H and O…H/H…O contacts in 1, and H…H and C…H/H…C contacts in 2. The TGA indicated that 1 and 2 were stable below 390 and 370 ℃, respectively.
Inhibitory effect of the interlayer of two-dimensional vermiculite on the polysulfide shuttle in lithium-sulfur batteries
Xiaoli CHEN , Zhihong LUO , Yuzhu XIONG , Aihua WANG , Xue CHEN , Jiaojing SHAO
2025, 41(8): 1661-1671  doi: 10.11862/CJIC.20250075
[Abstract](1) [FullText HTML] [PDF 6239KB](0)
Abstract:
A functional interlayer based on two-dimensional (2D) porous modified vermiculite nanosheets (PVS) was obtained by acid-etching vermiculite nanosheets. The as-obtained 2D porous nanosheets exhibited a high specific surface area of 427 m2•g-1 and rich surface active sites, which help restrain polysulfides (LiPSs) through good physical and chemical adsorption, while simultaneously accelerating the nucleation and dissolution kinetics of Li2S, effectively suppressing the shuttle effect. The assembled lithium-sulfur batteries (LSBs) employing the PVS-based interlayer delivered a high initial discharge capacity of 1 386 mAh•g-1 at 0.1C (167.5 mAh•g-1), long-term cycling stability, and good rate property.
Syntheses, characterization, and luminescence properties of Yb(Ⅲ)-based one-dimensional chain coordination polymer
Wanting CHEN , Chufei MIAO , Yan LIU , Bobi ZHENG , Xiaoyu ZHENG , Han XU , Jumei TIAN
2025, 41(8): 1672-1680  doi: 10.11862/CJIC.20250013
[Abstract](1) [FullText HTML] [PDF 1825KB](0)
Abstract:
One Yb(Ⅲ)-based coordination polymer, {[Yb(H2dhtp)1.5(H2O)4]·3H2O}n (1) (H4dhtp=2, 5-dihydroxyterephthalic acid), was fabricated and structurally characterized by single-crystal X-ray diffraction, IR, powder X-ray diffraction, X-ray diffraction, and elemental analysis. Complex 1 displays a 1D chain structure, and belongs to P1 group. The solid-state luminescent spectrum of 1 showed an emission band with the maximum at 508 nm (λex=408 nm). It exhibited the emission characteristic of the H4dhtp ligand. The fluorescence of 1 in water displayed the strongest intensity. In detecting various metal ions, adding Zr4+ led to a blue shift in fluorescence, accompanied by an increase in intensity, whereas the presence of Fe3+ resulted in a decrease in luminescence. The changes observed in the IR spectrum indicate an interaction between Fe3+/Zr4+ and complex 1, resulting in the variation of luminescence properties.
Coordination polymers based on anthracene- and pyrene-derived ligands: Crystal structure, fluorescent property, and framework isomerization
Youbo HU , Donggang LI , Changhua SUN , Zhenzhong LU , Songjun GU
2025, 41(8): 1681-1688  doi: 10.11862/CJIC.20250004
[Abstract](2) [FullText HTML] [PDF 4755KB](0)
Abstract:
Six coordination polymers based on 9, 10-di(pyridine-4-yl)-anthracene (DPA) and 1, 6-di(1H-imidazol-1-yl)pyrene (DIP) were obtained by solvothermal reactions. {[Zn(DPA)Cl2]·DMF·2H2O}n (1) and {[Zn1.5(DPA)1.5Cl3]·5H2O}n (2) are framework isomers, which both contain zigzag chains formed by DPA, Zn2+, and Cl-. The zigzag chains in 1 are further assembled by C—H…Cl interactions into layers, and these layers exhibit two different orientations, displaying a rare 2D to 3D interpenetration mode. The zigzag chains in 2 are parallelly arranged. {[Zn3(DPA)3Br6]·2DMF·1.5H2O}n (3) is isostructural to 2. 3 was obtained using ZnBr2 instead of ZnCl2.[M(DPA) (formate)2(H2O)2]n[M=Co (4), Cu (5)] are isostructural, contain chain structures formed by DPA, Cu2+/Co2+, and formate ions, which were formed in situ in the solvothermal reaction. {[Zn(DIP)2Cl]ClO4}n (6) contains a layer structure formed by DIP and Zn2+. Free DPA and DIP ligands exhibited high fluorescence at room temperature, and coordination polymers 3 and 6 displayed enhanced fluorescent emissions.
Address:Zhongguancun North First Street 2,100190 Beijing, PR China Tel: +86-010-82449177-888
Powered By info@rhhz.net