Diamond synthesis from BaCO3 via high-pressure high-temperature processing

IF 5.1 3区材料科学 Q2 MATERIALS SCIENCE, COATINGS & FILMS

Diamond and Related Materials Pub Date : 2025-08-04 DOI:10.1016/j.diamond.2025.112709

Hao Li , Zhicai Zhang , Zhiqiang Hou , Yao Tang , Chao Wang , Yikan Yang , Jiao Yang , Jun Gao , Haikuo Wang

引用次数: 0

Abstract

This work presents a novel catalyst-free synthesis route for micron-sized diamonds using BaCO₃ as the sole carbon source in a hexahedral multi-anvil press system at 15 GPa and 2300 K with reaction durations of 0.5 and 4 min. Comprehensive characterization through SEM, XRD and Raman spectroscopy confirms the successful synthesis of high-crystallinity diamond phases. Besides, our experimental results reveal a distinct correlation between synthesis duration and diamond characteristics: prolonged reaction times promote crystal growth while simultaneously compromising purity. The developed method not only presents a substantial advancement in catalyst-free diamond synthesis under high-pressure high-temperature (HPHT) conditions, but also establishes a viable technical solution for fabricating ¹⁴C diamonds by isotopic-enriched carbonate precursors.

Abstract Image

查看原文本刊更多论文

高压高温法制备BaCO3合成金刚石

本文提出了一种以BaCO3为唯一碳源，在15gpa、2300k的六面体多顶压系统中，反应时间分别为0.5 min和4 min的微米级金刚石无催化剂合成新途径。通过SEM、XRD和拉曼光谱综合表征，证实了高结晶度金刚石相的成功合成。此外，我们的实验结果揭示了合成时间与金刚石特性之间的明显相关性：延长的反应时间促进了晶体生长，同时损害了纯度。该方法不仅在高压高温条件下无催化剂合成金刚石方面取得了实质性进展，而且为利用富同位素碳酸盐前驱体制备14C金刚石提供了可行的技术解决方案。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Diamond and Related Materials 工程技术-材料科学：综合

CiteScore

6.00

自引率

14.60%

发文量

702

审稿时长

2.1 months

期刊介绍： DRM is a leading international journal that publishes new fundamental and applied research on all forms of diamond, the integration of diamond with other advanced materials and development of technologies exploiting diamond. The synthesis, characterization and processing of single crystal diamond, polycrystalline films, nanodiamond powders and heterostructures with other advanced materials are encouraged topics for technical and review articles. In addition to diamond, the journal publishes manuscripts on the synthesis, characterization and application of other related materials including diamond-like carbons, carbon nanotubes, graphene, and boron and carbon nitrides. Articles are sought on the chemical functionalization of diamond and related materials as well as their use in electrochemistry, energy storage and conversion, chemical and biological sensing, imaging, thermal management, photonic and quantum applications, electron emission and electronic devices. The International Conference on Diamond and Carbon Materials has evolved into the largest and most well attended forum in the field of diamond, providing a forum to showcase the latest results in the science and technology of diamond and other carbon materials such as carbon nanotubes, graphene, and diamond-like carbon. Run annually in association with Diamond and Related Materials the conference provides junior and established researchers the opportunity to exchange the latest results ranging from fundamental physical and chemical concepts to applied research focusing on the next generation carbon-based devices.