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Quantitative analysis of the current status and research trends of biochar research - A scientific bibliometric analysis based on global research achievements from 2003 to 2023

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Abstract

Biochar has excellent physical and chemical properties such as porosity, high carbon content, high cation exchange capacity, and rich surface functional groups and has been widely used in environmental remediation. Over the past 20 years, although various reviews have described the application of biochar as an environmentally friendly multifunctional material in environmental remediation, no comprehensive summary and analysis of the research trends in this field exists. To promote the rapid and stable development of the field of biochar, the current state of research on biochar is clarified using the bibliometric method in this report, and potential development directions and challenges for the future are identified. All relevant biochar literature from 2003–2023 was collected from the Chinese National Knowledge Infrastructure and Web of Science Core Collection. A total of 6,119 published Chinese papers and 25,174 English papers were selected for the quantitative analysis. CiteSpace, VOSviewer, and Scimago graphics software was used to summarize the numbers of papers published over the years, as well as the countries, institutions, and authors that published the most articles. Secondly, using keyword co-occurrence and emergence analysis, the recognized research hotspots in different areas such as adsorbents, soil remediation, catalytic oxidation, supercapacitors, and “biochar-microbial” synergy were analyzed. Finally, the prospects and challenges of biochar were assessed to provide new perspectives for further promoting its development in technological, economic, environmental, and other aspects.

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The original data for this work comes from the Web of Science and CNKI databases.

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Acknowledgments

The study was financially supported by the National Natural Science Foundation of China (22166034), the Project of Science and Technology Department of Jilin Province (China) (YDZJ202201ZYTS542), and the National College Students' innovation and entrepreneurship training program (China) (202210184151).

Funding

The study was financially supported by the National Natural Science Foundation of China (22166034), the Project of Science and Technology Department of Jilin Province (China) (YDZJ202201ZYTS542), and the National College Students' innovation and entrepreneurship training program (China) (202210184151).

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Authors and Affiliations

  1. Department of Environmental Science, College of Geography and Ocean Sciences, Yanbian University, Park Road 977, Yanji, 133002, Jilin Province, People’s Republic of China

    Tianming Yang & Long-Yue Meng

  2. Department of Chemistry, College of Science, Yanbian University, Park Road 977, Yanji, 133002, Jilin Province, People’s Republic of China

    Zixuan Zhang

  3. College of Geography and Ocean Sciences, Yanbian University, Park Road 977, Yanji, 133002, Jilin Province, People’s Republic of China

    Weihong Zhu

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  1. Tianming Yang
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  2. Zixuan Zhang
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  4. Long-Yue Meng
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Contributions

All authors contributed to the study conception and design. The authors Tianming Yang and Zixuan Zhang contributed equally to complete the experiment and wrote the main manuscript. Long-Yue Meng and Weihong Zhu provided research ideas and suggestions for revision. All the authors reviewed the manuscript.

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Correspondence to Long-Yue Meng.

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Yang, T., Zhang, Z., Zhu, W. et al. Quantitative analysis of the current status and research trends of biochar research - A scientific bibliometric analysis based on global research achievements from 2003 to 2023. Environ Sci Pollut Res 30, 83071–83092 (2023). https://doi.org/10.1007/s11356-023-27992-1

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