主要研究领域：
1. 环境微生物生态学
2. 环境分子生物学
3. 环境污染物处理与修复生物技术
4. 污水生物处理及资源化
代表性研究项目：
1.主持2020年“磁性纳米筛选-微流控单细胞分离集成技术对有机磷农药降解菌的选育研究” (51978056)
2.主持2017年国家自然科学基金面上项目：“石化污染土壤中原位降解功能微生物磁纳米识别及强化修复技术研究”（51678054）
3.主持2012年国家自然科学基金面上项目 “表征典型多环芳烃PAHs降解诱导型生物传感细胞构建及优化”（51178048）.
4.主持2008年国家自然科学基金项目 “微生物自氧固氮作用对饮用水源水华形成机制的影响机理解析”（50708008）.
5.主持环境模拟与污染控制国家重点联合实验室（清华大学）2008年度开放课题“无介体微生物燃料电池中高效产电微生物的解析与应用”（08K07ESPCT）
6.参与2018国家水体污染控制与治理科技重大专项永定河（北京段）多水源补给水质风险控制-“多类型生态补水水质净化与风险控制技术与示范”（2018ZX07101005）
7.参与承担国家自然科学基金国际(地区)合作交流项目“污染场地中石油烃化合物的生物有效性和生物降解潜力研究” (中英合作研究项目NSFC-RS－40910262）
近期代表性论文：
1.Yujiao Sun*, Meng Yin, Danyang Zheng, Dayi Wang, et al.,Different acetonitrile degraders and degrading genes between anaerobic ammonium oxidation and sequencing batch reactor as revealed by stable isotope probing and magnetic-nanoparticle mediated isolation. The Science of the Total Environment, 2020: 143588.
2. Sidan Lu,Yujiao Sun*,Baiyun Lu, Danyang Zheng, Shangwei Xu,Change of abundance and correlation of Nitrospira inopinata-like comammox and populations in nitrogen cycle during different seasons. Chemosphere, 2020, 241: 125098.
3. Jie Li, Yujiao Sun*, Xiaoyu Wang, Shangwei Xu,Changes in microbial community structures under reclaimed water replenishment conditions.International Journal of Environmental Research and Public Health, 2020, 4(17): 1174.
4.Juanjuan Zhao, Yujiao Sun*,Yang Zhang, Bo-Tao Zhang*, Meng Yin, Long Chen,Heterogeneous activation of persulfate by activated carbon supported iron for efficient amoxicillin degradation, Environmental Technology & Innovation, 2020: 101259.
5.Yujiao Sun*, Meng Yin, Danyang Zheng, Lei Wang, Xiaohui Zhao, Jie Li, Separating and Characterizing Functional Nitrogen Degraders via Magnetic Nanoparticle-Mediated Isolation.Journal of Chemistry, 2020: 1841364.
6.Yujiao Sun,Juanjuan Zhao*, Bo-Tao Zhang*, Jie Li, Yongbin Shi, Yang Zhang, Oxidative degradation of chloroxylenol in aqueous solution by thermally activated persulfate: Kinetics, mechanisms and toxicities, Chemical Engineering Journal, 2019, 368: 553-563.
7.Juanjuan Zhao, Yujiao Sun*, Fachao Wu, Minjian Shi, Xurui Liu, Oxidative degradation of amoxicillin in aqueous solution by thermally activated persulfate, Journal of Chemistry, 2019, 2019(2019): 1-10.
8.Yujiao Sun, Juanjuan Zhao*, Lili Chen, Yueqiao Liu, Jiane Zuo*. Methanogenic community structure in simultaneous methanogenesis and denitrification granular sludge. Frontiers of Environmental Science & Engineering. 2018, 12(4): 10.
9. Panyang Shao, Hezhong Tian*,Yujiao Sun*, Huanjia Liu, Bobo Wu, Shuhan Liu, Characterizing remarkable changes of severe haze events and chemical compositions in muti-size airborne particles from January 2013 to 2016-2017 winter in Beijing, China. Atmospheric Environment, 189, 2018: 133-144.
10.Yujiao Sun*, Shangwei Xu, Danyang Zheng, Jie Li, Hezhong Tian*, Yong Wang, Effects of haze pollution on microbial community changes and correlation with chemical components in atmospheric particulate matter. Science of the total environment, 2018, 6(637): 507-516.
11.Yujiao Sun, Xiaohui Zhao, Dayi Zhang, Aizhong Ding, Wei E. Huang, New naphthalene whole-cell bioreporter for measuring and assessing naphthalene in polycyclic aromatic hydrocarbons contaminated site. Chemosphere, 2017, 186: 510-518.
12.Yujiao Sun, Sidan Lu, Xiaohui Zhao, Long-term oil pollution and in situ microbial response of groundwater in Northwest China. Archives of Environmental Contamination and Toxicology, 2017, 72: 519–529.
13. Lu Sidan,Sun Yujiao*, Zhao Xuan, Sequencing insights into microbial communities in the water and sediments of Fenghe River, China. Archives of Environmental Contamination and Toxicology, 2016, 71: 122-132.
14. Zhao Xiaohui, Li, Hanbing, Ding, Aihong, Zhou,Guizhong,Sun Yujiao, Zhang Dayi,Preparing and characterizing Fe3O4 cellulose nanocomposites for effective isolation of cellulose-decomposing microorganisms.Materials Letters, 2016, 163: 154-157.
15. Danyang Zheng,Yujiao Sun*, Huijuan Li, Sidan Lu, Shangwei Xu. Multistage A-O activated sludge process for paraformaldehyde wastewater treatment and microbial community structure analysis. Journal of Chemistry, 2016, 4: 1-7.
16. 卢思丹,孙寓姣*,赵轩,王蕾,郑丹阳.降水对沣河水质和水体微生物的影响,环境科学, 2016,37(7):2563-2569.
17. 孙寓姣,陈程,丁爱中,赵晓辉,张惠淳.官厅水库水质和环境因子特征及其与水体微生物多样性的响应.中国环境科学. 2015,35(5):1547-1553.