Freeform monolithic graphitic aerogels by laser pyrolysis of pretreated blood-derived feedstocks

IF 17.5 1区材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY

Matter Pub Date : 2025-10-01 DOI:10.1016/j.matt.2025.102432

Shuichiro Hayashi , Ankit Das , Marco Rupp , M. Shaharyar Wani , Craig B. Arnold

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Abstract

While 3D-printed graphitic aerogels (GAs) offer broad applications, existing manufacturing methods face limitations in scalability and material performance. This study presents a two-step laser pyrolysis strategy for the rapid direct manufacturing of freeform monolithic GAs using hemoglobin, a renewable biowaste-derived feedstock. Through targeted precursor pretreatment and digitally controlled laser processing, ultralightweight GAs with interconnected ultrathin sheets and denser strut-like boundaries are produced. Despite their low density, these GAs exhibit remarkable properties owing to their high graphitic crystallinity and seamless architecture, achieving rapid and stable Joule heating with superior efficiency (∼137.43°C W⁻¹), ideal for de-icing applications. The programmable laser process enables geometry-customizable fabrication, allowing material and energy-efficient design optimization for next-generation automotive and aerospace systems. This work highlights the critical role of transient-state control in tuning structure-property relationships and establishes pretreatment as a powerful yet underexplored strategy for scalable sustainable manufacturing of high-performance architected carbon materials from renewable feedstocks.

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用激光热解预处理血源原料制备自由形态单片石墨气凝胶

虽然3d打印石墨气凝胶（GAs）提供了广泛的应用，但现有的制造方法在可扩展性和材料性能方面面临限制。本研究提出了一种两步激光热解策略，用于使用血红蛋白（一种可再生生物废物来源的原料）快速直接制造自由形态整体气体。通过有针对性的前驱体预处理和数控激光加工，可以生产出具有互连超薄片和致密柱状边界的超轻气体。尽管它们的密度很低，但由于它们的高石墨结晶度和无缝结构，这些气体表现出显着的性能，以优越的效率（~ 137.43°C W−1）实现快速稳定的焦耳加热，是除冰应用的理想选择。可编程激光工艺可实现几何定制制造，为下一代汽车和航空航天系统提供材料和节能设计优化。这项工作强调了瞬态控制在调整结构-性能关系中的关键作用，并将预处理作为一种强大但尚未充分开发的策略，用于可再生原料的高性能建筑碳材料的可扩展可持续制造。

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来源期刊

Matter MATERIALS SCIENCE, MULTIDISCIPLINARY-

CiteScore

26.30

自引率

2.60%

发文量

367

期刊介绍： Matter, a monthly journal affiliated with Cell, spans the broad field of materials science from nano to macro levels,covering fundamentals to applications. Embracing groundbreaking technologies,it includes full-length research articles,reviews, perspectives,previews, opinions, personnel stories, and general editorial content. Matter aims to be the primary resource for researchers in academia and industry, inspiring the next generation of materials scientists.