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SCI论文中怎样描述XRD结果?

本文授权转载自微信公众号研之成理(rationalscience),原作者:zsh

Part 1. XRD谱图作为定性分析手段

1. 列举型(推荐)

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实例一:The diffraction pattern for the electrodeposited film has seven broad peaks at 11.8°, 16.8°, 26.7°, 35.2°, 39.2° , 46.4° and 55.9°, corresponding to (100), (200), (310),(211), (301), (411), and (521) of β-FeOOH (ICSD 31136), respectively.

(Ref.: Zou, S. etc., Chem. Mater. 2015, 27, 8011 – 8020)

句式模板: … shows/has/exhibits N(特征峰数目) peaks at _, _, _ and _, corresponding to (), (), () and () of __ (JCPDS (或ICSD) ___), respectively.

变型: Wide-angle X-ray diffraction (WAXD) shows broad peaks at _, _, and _°, which arecharacteristic of … (JCPDS __)。

优点:证据确凿,内容充实,既让人信服,又可以为下文的其他表征(比如高分辨电镜中的晶面间距)打好基础。

适合于:1)  XRD结果或者物质的晶型结构对于文章主体内容有重要价值的时候(例如,材料的晶型是重点考察对象(晶型影响材料性能)时;必须通过XRD来对物质组成结构进行定性时);2)下文其它表征需要和XRD结果进行呼应时,比如HRTEM图片中的晶面间距要和XRD (h,k,l)面进行对应时;(3)有多个XRD谱图需要描述时,第一个谱图的描述宜详写,这样后面的谱图描述就可以简略一些,详略得当。

2. 指派型

实例二: Peaks appearing in the original CdS rods can beindexed to wurtzite CdS (JCPDS __) and those in the fully exchanged rods can be indexed to acanthite (JCPDS __)。

(Ref. : Robinson, R. etc., Science 2007, 317, 355-358)

句式模板:Peaks appearing in __ can be (well) indexed to __ (JCPDS __)。

变型:The pattern for __ has a number of peaks that can be well-indexed to __ (JCPDS __)。

优点:言简意赅,直截了当将谱图指派给某一物质。

适用于:1)材料组成简单且比较明确的情况下,XRD谱图只是用来区别物质组成时;2)前文已经有对其他XRD谱图进行具体描述时,为了让文章不重复啰嗦时。

3. 验证型

实例三:The crystal phase of CuO spheres was further confirmed by X-ray diffraction.

(Ref.: Zhu, J. etc., Energy Environ. Sci., 2013, 6, 987-993)

句式模板:The crystal phase of __ was further confirmed by X-ray diffraction.

变型:We further confirmed that thepolycrystalline __ (spheres, nanoparticles, rods) belong to __ by XRD.

优点:句式极其简单

适用于:XRD结果作为辅助信息来验证前文已经较为明确的结果时。

Part 2. XRD定性分析物质结晶程度,纯度等

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1.通过峰的尖/宽,有/无,峰强度等来说明物质的结晶性/分散度等

实例一:The diffraction peaks of both BiOI and ZnO were sharp and intense, indicating their highly crystalline nature. No impurity peaks were observed, confirming the high purity of the two products.

(Ref.: Jiang, J. et al., J. Phys. Chem. C 2011, 115, 20555 –20564)

句式模板: The diffraction peaks (of __) were sharp and intense, indicating their highly crystalline nature. No impurity peaks were observed, confirming the high purity of the products.

890.jpg

实例二:The X-ray powder diffraction pattern of an electrodeposited catalyst shows broad amorphous features and no peaks indicative of crystalline phases other than the peaks associated with the ITO layer.

(Ref.: Kanan, M. and Nocera, D., Science, 2008, 321,1072-1075)

句式模板:The X-ray powder diffraction pattern of __ shows broad amorphous features and no peaks indicative of crystalline phases.

变型:The diffraction pattern of __ has only a very broad peak, indicating the presence of fully amorphous __. This can be ascribed to … (说明原因)

908.jpg

实例三:No characteristic diffraction peaks of Ni(OH)2 are observed because of its lower loading content and weak crystallization, on the other hand, also implying the good dispersion of the very small Ni(OH)2 clusters on the TiO2 surface.

(Yu, J. et.al. J. Phys. Chem. C 2011,115, 4953–4958)

句式模板:No characteristic diffraction peaks of __ are observed because of its lower loading content and weak crystallization, on the other hand, also implying the good dispersion of the very small __ clusters on the __ surface.

图片来源:

1. http://www.landong.com/ps_sctx_180351.htm

2. http://www.chem.zju.edu.cn/fxcspt/redir.php?catalog_id=80&object_id=531

3. Jiang, J. et al., J. Phys. Chem. C 2011, 115, 20555 –20564

SCI论文中怎样描述XRD结果?

本文来自微信公众号研之成理,转载旨在知识传播,本文观点不代表清新电源立场。 扫描页面右上角二维码关注微信公众号微信公众号研之成理

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