Group 1 - The article highlights innovative research that transforms pollutants into valuable resources, contributing to sustainable development [1] - The fifth Meituan Qingshan Technology Award winners are recognized for their groundbreaking materials and chemical technologies [1] Group 2 - Professor Yang Sihai from Peking University is developing Metal-Organic Frameworks (MOFs) that can capture nitrogen oxides (NOx) from coal combustion and vehicle emissions, converting them into ammonium nitrate fertilizer [2] - This MOF technology offers a new closed-loop solution for air pollution control, enhancing the efficiency of traditional methods [2] Group 3 - Professor Lan Huachun from Tsinghua University has created an electrochemical reduction technology that effectively converts hexavalent chromium, a highly toxic substance, into less harmful trivalent chromium, significantly reducing treatment costs and energy consumption [3] - The team has also developed a biomimetic adsorption material inspired by coral structures, capable of extracting precious metals from low-concentration industrial wastewater [3] Group 4 - Professor Jiang Xuefeng from East China Normal University is redefining sulfur, traditionally viewed negatively, as a key element in addressing plastic pollution through a "3S Green Sulfur Chemistry" concept [4] - The research focuses on high-performance engineering plastics that are difficult to recycle, which are prevalent in various industries, including automotive [4] Group 5 - Jiang Xuefeng's team has developed a unique sulfur bond activation technology that breaks down stubborn plastics into reusable small molecular raw materials, promoting a closed-loop recycling process [5] - The research aims to transition innovative laboratory ideas into practical solutions for environmental protection [5]