chapter 1 Water under High-Temperature and High-Pressure Conditions and Some Special Reactions under Hydrothermal Conditions / Zheng Shen Wei Zhang Xu Zeng Fangming Jin Guodong Yao Yuanqing Wang -- chapter 2 Catalytic Hydrothermal Reactions for Small Molecules Activation / Yuanqing Wang Fangming Jin -- chapter 3 Hydrothermal Water Splitting for Hydrogen Production with Other Metals / Xu Zeng Heng Zhong Guodong Yao Fangming Jin -- chapter 4 Hydrothermal Water Splitting for Hydrogen Production with Iron / Xu Zeng Heng Zhong Guodong Yao Fangming Jin -- chapter 5 Hydrothermal CO2 Reduction with Iron to Produce Formic Acid / Jia Duo Guodong Yao Fangming Jin Heng Zhong -- chapter 6 Hydrothermal Reduction of CO2 to Low-Carbon Compounds / Ge Tian Chao He Ziwei Liu Shouhua Feng -- chapter 7 Hydrothermal CO2 Reduction with Zinc to Produce Formic Acid / Yang Yang Guodong Yao Binbin Jin Runtian He Fangming Jin Heng Zhong -- chapter 8 Autocatalytic Hydrothermal CO2 Reduction with Manganese to Produce Formic Acid / Lingyun Lyu Fangming Jin Guodong Yao -- chapter 9 Autocatalytic Hydrothermal CO2 Reduction with Aluminum to Produce Formic Acid / Binbin Jin Guodong Yao Fangming Jin Heng Zhong -- chapter 10 Cu-Catalyzed Hydrothermal CO2 Reduction with Zinc to Produce Methanol / Zhibao Huo Dezhang Ren Guodong Yao Fangming Jin Mingbo Hu -- chapter 11 Hydrothermal Reduction of CO2 with Glycerine / Zheng Shen Minyan Gu Meng Xia Wei Zhang Yalei Zhang Fangming Jin -- chapter 12 Hydrothermal Reduction of CO2 with Compounds Containing Nitrogen / Guodong Yao Feiyan Chen Jia Duo Fangming Jin Heng Zhong -- chapter 13 Perspectives and Challenges of CO2 Hydrothermal Reduction / Ligang Luo Fangming Jin Heng Zhong.