Morphological control of cuprate superconductors using sea sponges as templates†

IF 4.6 3区化学 Q2 CHEMISTRY, MULTIDISCIPLINARY RSC Advances Pub Date : 2025-04-17 DOI:10.1039/D5RA00541H

Jan Maurycy Uszko, Jula C. Schroeder, Stephen J. Eichhorn, Avinash J. Patil and Simon R. Hall

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Abstract

Functional porous superconducting sponges, consisting of YBa₂Cu₃O_6+δ (YBCO) and Bi₂Sr₂CaCu₂O_8+δ (BSCCO), were created by biotemplating with natural sea sponges. Naturally occurring calcium in the spongin fibers was utilized to dope YBCO and to form BSCCO without adding any external calcium source. The sample morphology was confirmed with scanning electron microscopy, and the sample composition was confirmed with energy-dispersive X-ray spectroscopy, powder electron diffraction and high-resolution transmission electron microscopy. The YBCO sponge exhibited a critical temperature (T_c) of approximately 70 K, and the BSCCO sponge showed a T_c of 77 K. This proof-of-concept study demonstrates the feasibility of using sea sponges as a greener, more sustainable template for superconductor synthesis.

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以海绵为模板的铜超导体的形态控制

以天然海绵为原料，采用生物模板法制备了YBa2Cu3O6+δ (YBCO)和Bi2Sr2CaCu2O8+δ (BSCCO)两种功能多孔超导海绵。在不添加任何外部钙源的情况下，利用海绵纤维中天然存在的钙来掺杂YBCO并形成BSCCO。用扫描电镜对样品形貌进行了确认，并用能量色散x射线能谱、粉末电子衍射和高分辨率透射电镜对样品组成进行了确认。YBCO海绵的临界温度（Tc）约为70 K， BSCCO海绵的临界温度为77 K。这项概念验证研究证明了使用海绵作为更环保、更可持续的超导体合成模板的可行性。

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来源期刊

RSC Advances chemical sciences-

CiteScore

7.50

自引率

2.60%

发文量

3116

审稿时长

1.6 months

期刊介绍： An international, peer-reviewed journal covering all of the chemical sciences, including multidisciplinary and emerging areas. RSC Advances is a gold open access journal allowing researchers free access to research articles, and offering an affordable open access publishing option for authors around the world.