The extensive use of fossil fuels for electricity generation, heating, and transportation remains the dominant source of greenhouse gas emissions, significantly driving global climate change. Transitioning toward cleaner fossil fuel utilization, particularly through low-carbon hydrogen production, represents a critical pathway in the energy transition. This chapter presents a comprehensive review of emerging carbon capture and conversion technologies that can enable clean hydrogen systems. It begins by examining the Intergovernmental Panel on Climate Change (IPCC) roadmap toward net-zero emissions and contextualizes potential decarbonization pathways for energy sector. Subsequently, advanced CO₂ capture and removal technologies including ionic-liquid-based physical absorption, chemical looping, and cryogenic separation are critically assessed in terms of technological maturity, capture efficiency, CO₂ purity, scalability, and implementation challenges. The chapter further categorizes CO₂ conversion routes into chemical approaches and biological pathways evaluating their potential for producing value-added products. The chapter concludes by highlighting integrated CCC hydrogen frameworks as a viable strategy for decarbonizing energy sector, while identifying key technical barriers, research gaps, and future directions required to accelerate large-scale deployment.