用大模型智能找最稳定吸附结构,省计算还更准
Adsorb-Agent: Autonomous Identification of Stable Adsorption Configurations via Large Language Model Agent
- 用大模型自主推理,智能筛选吸附构型,减少盲目试错
- 在20个体系中84%结果可比,35%找到更低能量解
- 对复杂体系和大分子吸附尤其有效,适合催化剂研发
吸附能是催化反应性的重要描述符,但确定其值需评估大量吸附物-催化剂构型,计算成本高。现有方法依赖全量采样,无法保证找到全局最低能量构型。为此,我们提出Adsorb-Agent,一种基于大语言模型(LLM)的智能代理,用于高效识别对应全局最低能量的稳定吸附构型。该代理利用内置知识与推理能力,战略性探索构型空间,显著减少初始设置数量,同时提升能量预测精度。本研究评估了GPT-4o、GPT-4o-mini、Claude-3.7-Sonnet和DeepSeek-Chat等不同LLM作为推理引擎的表现,其中GPT-4o表现最优。在20个多样化体系上测试,Adsorb-Agent在84%的情况下达到可比吸附能,35%情况下获得更低能量,尤其在异质金属体系中达47%,大吸附体体系中达67%。结果表明,相比穷举搜索,该方法能加速催化剂发现,降低计算成本并提升预测可靠性。
原文摘要 · Abstract (English)
Adsorption energy is a key reactivity descriptor in catalysis. Determining adsorption energy requires evaluating numerous adsorbate-catalyst configurations, making it computationally intensive. Current methods rely on exhaustive sampling, which does not guarantee the identification of the global minimum energy. To address this, we introduce Adsorb-Agent, a Large Language Model (LLM) agent designed to efficiently identify stable adsorption configurations corresponding to the global minimum energy. Adsorb-Agent leverages its built-in knowledge and reasoning to strategically explore configurations, significantly reducing the number of initial setups required while improving energy prediction accuracy. In this study, we also evaluated the performance of different LLMs, including GPT-4o, GPT-4o-mini, Claude-3.7-Sonnet, and DeepSeek-Chat, as the reasoning engine for Adsorb-Agent, with GPT-4o showing the strongest overall performance. Tested on twenty diverse systems, Adsorb-Agent identifies comparable adsorption energies for 84% of cases and achieves lower energies for 35%, particularly excelling in complex systems. It identifies lower energies in 47% of intermetallic systems and 67% of systems with large adsorbates. These findings demonstrate Adsorb-Agent's potential to accelerate catalyst discovery by reducing computational costs and enhancing prediction reliability compared to exhaustive search methods.
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