Development and Techno-economic Analysis of Renewable Energy Utilization Towards Carbon Neutrality Development of Photovoltaic Power Technology Green Hydrogen Production Artificial Photosynthesis via Photocatalytic, Electrocatalytic, Photoelectrocatalytic CO2 Conversion Functional Materials and Techniques for the Biomass Conversion and Utilization Advanced Clean Conversion and Efficient Utilization of Fossil Fuels Status and Evaluation of Energy Storage Technology: Advances and Challenges in Phase Change Materials Advances in CO2 Capture and Utilization Development of Efficient Air Pollution Control Technologies Innovation in Water Utilization and Wastewater Treatment Development of Solid Waste Recycling and Solid Pollution Control.