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南京工业大学张遵民教授团队 Precision Chemistry|图神经网络精准预测CO₂在物理溶剂中的溶解度

  • 2026-02-02 20:17:35
南京工业大学张遵民教授团队 Precision Chemistry|图神经网络精准预测CO₂在物理溶剂中的溶解度

英文原题:Graph Attention Networks for Accurate and Explainable Prediction of CO₂ Solubility in Diverse Physical Solvents

通讯作者:张遵民,南京工业大学

作者:Chenggang Bao# (包成钢),Zhou Fan# (范舟),Chundong Zhang (张春冬),Zunmin Zhang* (张遵民)

背景介绍

在全球碳减排与"双碳"目标的推动下,工业源二氧化碳(CO2)的高效捕集与分离成为能源与化工领域的重要课题。溶剂吸收法因工艺成熟而被广泛采用,其中物理溶剂依靠 CO2 的物理溶解实现吸收,具有再生能耗低、过程可逆性强等优势。然而,CO2在物理溶剂中的溶解度高度依赖分子结构及温度、压力等条件,溶剂体系的筛选与设计面临效率瓶颈。近年来,机器学习方法为快速预测溶解度、加速溶剂设计提供了新的技术路径,但如何在保证预测精度的同时提升模型的化学可解释性,仍是该领域面临的关键挑战。

文章亮点

近日,南京工业大学张遵民教授团队在 Precision Chemistry 上发表研究论文,系统探讨了图注意力网络(Graph Attention Network, GAT)在预测物理溶剂中 CO₂ 溶解度方面的应用潜力。研究团队基于公开文献数据,构建了一个包含54 种物理溶剂、1671 条实验数据的 CO₂ 溶解度数据库,溶剂类型覆盖醇、酮、醚和酯等典型体系,为模型训练与性能评估提供了可靠的数据基础。

在此基础上,作者系统比较了全连接神经网络(FCNN,图1a)、卷积神经网络(CNN,图1b)、图卷积网络(GCN,图2a)和图注意力网络(GAT,图2b)四种模型的预测性能。结果表明,基于分子图的图神经网络整体优于传统神经网络模型,其中 GAT 通过引入注意力机制,能够自适应学习不同原子及其局域化学环境在溶解度形成过程中的相对重要性,从而在预测精度和稳定性方面表现出显著优势。

图1. 用于预测物理溶剂CO2溶解度的 (a) FCNN和 (b) CNN的结构示意图。

图2. 用于预测物理溶剂 CO₂ 溶解度的 (a) GCN 和 (b) GAT 结构示意图。

在独立测试集和交叉验证中(图3),GAT 模型的决定系数 R² 达到 0.9837,均方根误差(RMSE)仅为 0.0342,预测误差低于 FCNN、CNN 和 GCN 等对比模型。同时,在温度、压力等输入变量存在不确定性时,GAT 仍能保持稳定性能,体现出较好的模型鲁棒性,表明模型捕捉到了具有物理意义的结构–性能相关性。

图3. 四种神经网络模型在物理溶剂体系中的 CO₂ 溶解度预测值与实验值对比:(a) FCNN,(b) CNN,(c) GCN,(d) GAT。对角线表示理想的一致性。

进一步地,作者引入基于分子图的可解释性分析方法,从原子尺度定量分析不同结构特征对 CO₂ 溶解度的贡献。结果表明(图4),不同溶剂体系中主导 CO₂ 溶解行为的结构因素存在显著差异:在醇类溶剂中,氢键相关特征对溶解度具有明显负向影响;而在酮、醚和酯等非质子型溶剂中,极化率相关特征占据主导地位,成为促进 CO₂ 溶解的关键因素。这些分析结果实验和热力学中已知的结构–溶解度趋势相一致,显著提升了模型的化学可解释性。

图4. 基于 GAT 模型的四种物理溶剂中溶解度加权原子特征重要性:(a) 醇,(b) 酮,(c) 醚,(d) 酯。正值代表促进作用,负值代表抑制作用。

总结/展望

这项工作成功构建了基于图注意力网络的 CO2 溶解度预测模型,在复杂物理溶剂体系中实现了高精度(R² = 0.9837)与良好可解释性的统一。通过原子尺度特征重要性分析,研究团队揭示了极化率、重原子度等关键特征对溶解度的定量贡献,所得规律与已知的物理吸收机理相一致,为结构–性能关系研究提供了有效的分析工具。在应用层面,该方法可为物理溶剂的高通量虚拟筛选提供支持,加速新型 CO2 捕集溶剂的评估与设计进程。

相关论文发表在以精准为导向的高质量期刊 Precision Chemistry 上,并入选 ACS 编辑精选(ACS Editors' Choice)。南京工业大学硕士研究生包成钢、本科生范舟为文章的共同第一作者,张遵民教授为通讯作者。该研究工作得到2024年国家重点研发计划“氢能技术”重点专项项目“风电/光伏制氢与化工过程高效耦合技术研究及示范”(2024YFB4006400)的资助。

通讯作者信息

南京工业大学张遵民教授课题组:

https://hgy.njtech.edu.cn/info/1058/3025.htm

扫描二维码阅读英文原文

Precis. Chem. 2025, ASAP

Publication Date: December 15, 2025

https://doi.org/10.1021/prechem.5c00207

© 2025 The Authors. Co-published by University of Science and Technology of China and American Chemical Society

关于 Precision Chemistry

Precision Chemistry由中国科学院院士、中国科学技术大学杨金龙教授担任主编,美国加州大学洛杉矶分校的段镶锋教授担任执行主编,日本理化学研究所Kenichiro Itami教授和德国明斯特大学Harald Fuchs教授担任副主编,以及中国科学技术大学钟文婉教授担任专题编辑。编委团队包括来自中国、美国、瑞士、法国、德国、日本、澳大利亚等国家的43位顶尖学者,以及26位来自8个国家的优秀青年学者组成的青年编委团队。

Precision Chemistry目前已被ESCI,Scopus,PMC, DOAJ,CAS 等数据库收录,IF 6.2,JCR Q1

所有的稿件都将经过严格的、公平的、高效的同行评审,我们致力于以期刊的文章质量赢得读者的信任。如有任何疑问,请发送电子邮件至eic@pc.acs.org

杨金龙院士

中国科学技术大学

Precision Chemistry 将发表化学及交叉领域中以精准化为导向的高水平的具有重要意义和吸引广泛兴趣的原创研究,包括但不限于计算、设计、合成、表征、应用等方面的前沿性研究成果,将秉承尊重科学、兼容并包的态度,为全球科研人员提供高质量的、开放的学术交流平台,服务于广大的化学和科学界。期刊将发表原创论文、快报、综述、展望、以及多样化的短篇社评。

2-Year Impact Factor

CiteScore

Time to First Peer Review Decision

6.2

4.4

25

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  1. CONNECT:[ UseTime:0.000985s ] mysql:host=127.0.0.1;port=3306;dbname=b460;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.001733s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.002384s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.000730s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.001485s ]
  6. SELECT * FROM `set` [ RunTime:0.000709s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.001667s ]
  8. SELECT * FROM `article` WHERE `id` = 473985 LIMIT 1 [ RunTime:0.012451s ]
  9. UPDATE `article` SET `lasttime` = 1770439421 WHERE `id` = 473985 [ RunTime:0.014293s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 65 LIMIT 1 [ RunTime:0.000767s ]
  11. SELECT * FROM `article` WHERE `id` < 473985 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.026941s ]
  12. SELECT * FROM `article` WHERE `id` > 473985 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.000523s ]
  13. SELECT * FROM `article` WHERE `id` < 473985 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.006914s ]
  14. SELECT * FROM `article` WHERE `id` < 473985 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.002117s ]
  15. SELECT * FROM `article` WHERE `id` < 473985 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.002169s ]
0.230021s