主要从事固体废弃物中有价元素提取技术，元素分离高纯化技术，微波能利用技术，绿色功能建筑材料、有毒有害废弃物处置等的研究。

1.X. C. Qiao , P. Si ,J. G. Yu. A Systematic Investigation into the Extraction of Aluminum from Coal Spoil through Kaolinite [J]. Environmental Science & Technology, 2008, 42 (22), 8541–8546.
2.X.C. Qiao, C.R. Cheeseman, C.S. Poon. Influences of chemical activators on incinerator bottom ash [J]. Waste Management, 2009, 29(2), 544-549.
3..C. Qiao, M. Tyrer, C.S. Poon, C.R. Cheeseman. Characterization of alkali-activated thermally treated incinerator bottom ash [J]. Waste Management, 2008, 28(10), 1955-1962.
4.X.C. Qiao, B.R. Ng, M. Tyrer, C.S. Poon and C.R. Cheeseman. Novel Cementitious Materials Produced from Incinerator Bottom Ash [J]. Resources, Conservation & Recycling, 2008, 52(3): 496-510.
5.X.C. Qiao, C.S. Poon, C.R. Cheeseman. Investigation into the stabilization/solidification performance of Portland cement through cement clinker phases, Journal of hazardous Materials, 2007, 139(2): 238-243.