FTIR、Raman和DFT计算表明,桥氧空位被引到Zn3V2O7(OH)2·2H2O的隧道结构中可以调节Zn2+与V-O-V键中O之间的相互作用。理论计算表明,具有8%浓度桥氧空位的ZVO具有较低的扩散能垒(0.2 eV)和较窄的带隙(1.23 eV).并表现出...
对于10%-Ce─ZnO样品,在这两种氧化物的边缘观察到丰富的缺陷(图2c),表明存在丰富的Ce─O─Zn结构。傅里叶变换红外光谱(FTIR)研究了Ce─O─Zn结构的化学成分(图2d)。以445和403 cm−1为中心的峰分别属于Zn─O和Ce─O的拉伸振动...
The XRD and FTIR investigations have shown the same structure both for DTA resulted residues in air and for samples isothermally treated at 500掳C for 1h. Based on the obtained results, the thermal treatment of the samples was established depending on their intended applications. In the ...
金属有机骨架(MOFs)是偶氮染料脱色的重要催化剂。 一种新型、简便的制备磁性Zn2(BDC)2(DABCO) MOF的方法,该方法是一种类fenton的非均相纳米催化剂,可用于降解水中的偶氮染料。 采用傅里叶变换红外光谱(FTIR)评价样品的官能团,x射线衍射(XRD)分析样品的晶体结构,氮吸附-解吸法测量样品的比表面积,场发射扫描电镜(...
作者采用廉价的3,4-二氯苯乙腈合成了3,4-二氯苯乙酸，创新性引入自制的Zn-B2O3复合型催化剂，优化反应条件，合成了2-(3,4-二氯苯甲基)苯并咪唑；采用FTIR、1HNMR、13CNMR和ESI-MS等表征手段进行结构表征。该方法具有操作简单、反应时间短、成本低廉、产物纯度高等优势，粗品采用重结晶纯化，避免柱层析分离，...
摘要 通过溶胶-凝胶法和浸渍法制备了负载Zn的SiO2包覆Fe3O4(Zn-Fe3O4@SiO2展开更多 Zinc-loaded iron oxide coated with silica(Zn-Fe3O4@SiO2)was prepared by sol-gel and impregnation methods,and characterized by SEM,TEM,XPS,Py-FTIR,VSM and EDS for analysis on textural and magnetic properties....
FTIR spectroscopy confirmed the form of spinel ferrite and explicated the properties of absorption bands approximately 593, 1111, 1385, 1640, 2922 and 3430. The energy band gap was estimated for all samples with diverse ratios and was observed in the range of 2.58 - 2.52 eV. 展开 ...
采用戊二醛共价交联法制备出了聚乙烯亚胺/Fe3O4杂化磁性纳米吸附剂(PEI-Fe3O4).通过TEM,XRD,FTIR,VSM和TGA等手段表征了材料的结构和性质.以甲基橙(MO)为吸附质,系统考... 刘旸,赵雪松,潘学军,... - 《环境工程学报》 被引量: 24发表: 2016年
In this study, the ZnFe2O4@SiO2@Tragacanth gum magnetic nanocomposite as a novel adsorbent was synthesized and was confirmed by FTIR, XRD, TEM, TGA and VSM methods. Then, the prepared nanocomposite has been tested for the removal of methylene blue dye from aqueous solution for adsorption ...
2024DOI: 10.1002/aenm.202402309https://doi.org/10.1002/aenm.202402309电催化讨论群-1:529627044 光催化群-2:927909706 均相催化与酶催化群-2:929342001 纳米催化群-1:256363607 多孔材料群-2:813094255 理论计算群-2:863569400 广告同步辐射...