【Frontiers in HaiChuan Chemical Technology】Ultra-fast photothermal technology generates extreme temperatures of 3,000 degrees Celsius to enable the instant creation of high-performance catalysts
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Traditional catalyst manufacturing processes are undergoing a technological revolution. A research team from the Korea Institute of Science and Technology has developed a groundbreaking ultra-fast photothermal technology that generates an extreme temperature of 3,000 degrees Celsius through a brief flash lasting 0.02 seconds, enabling the instant creation of high-performance catalysts. This breakthrough not only boosts hydrogen production efficiency by six times but also reduces energy consumption in production by over a thousand times, with the potential to completely transform the cost structure and technological landscape of the clean energy industry. One of the biggest obstacles facing the global hydrogen industry today is the high cost and complex manufacturing processes associated with catalysts. Traditional preparation methods require several hours of treatment in high-temperature environments, which not only consumes a large amount of energy but also entails multiple complex post-treatment steps. A joint research team led by Professor Il-Doo Kim from the Department of Materials Science and Engineering and Professor Sung-Yool Choi from the Department of Electrical and Electronic Engineering at the Korea Institute of Science and Technology has developed a new solution to this long-standing problem plaguing the industry, through an innovative direct-contact photothermal annealing technique. From theory to a technological breakthrough: The key to this research, published in the journal ACS Nano, lies in using intense light pulses generated by xenon lamps to achieve instantaneous transformation of materials. The research team precisely mixed chemically inert nanodiamond precursors with light-absorbing carbon black, using the photothermal effect to trigger a fundamental restructuring of the material in an extremely short time. Schematic diagram of the limitations of traditional thermal radiation synthesis and carbon nanotube conversion via direct contact photothermal treatment. Image source: ACS Nano (2025). DOI: 10.1021/acsnano.5c11229 Under strong light exposure, nanodiamonds rapidly transform into carbon nanonest structures. This material, composed of concentric graphite shells, possesses excellent electrical conductivity, a very large specific surface area, and good chemical stability, making it an ideal carrier for the creation of efficient catalysts. Through molecular dynamics simulations, the researchers confirmed the scientific mechanism of this transformation process, providing theoretical support for the reliability of the technology. More importantly, this technology enables the simultaneous synthesis and functionalization of materials. When metal precursors such as platinum, cobalt, and nickel are added to the mixture, ultra-high temperature photothermal treatment causes them to decompose instantly and to be precisely anchored on the surface of the newly formed carbon nanon onions in the form of individual atoms. The subsequent rapid cooling process effectively prevents atomic aggregation, ensuring that the catalyst achieves an optimal atomically dispersed state. This one-step process completely overturns the traditional approach to catalyst manufacturing, which requires multiple separate treatment steps. Traditional methods usually involve complex steps such as material preparation, catalyst loading, high-temperature heat treatment, and surface modification; each of these steps requires specialized equipment and a significant amount of time. New technologies integrate all these processes into a single light pulse processing step, achieving a revolutionary simplification of the process. The research team has successfully used this technique to prepare eight different types of high-density single-atom catalysts, meeting the material requirements in key application areas such as hydrogen energy, sensing, and environmental catalysis. Among them, the excellent performance of the platinum-carbon nanon onion catalyst in hydrogen production reactions is particularly noteworthy.
Multiple breakthroughs in economic efficiency: Experimental data show that the catalysts produced using this new technology achieve a six-fold increase in hydrogen production efficiency, while simultaneously reducing the amount of precious metals required. This dual advantage not only enhances catalytic performance but, more importantly, provides critical support for cost control in hydrogen energy technologies. The significant improvement in energy consumption is even more remarkable. Compared to traditional manufacturing processes, the new technology reduces energy consumption by more than a thousand times; this revolutionary improvement opens up entirely new pathways for the large-scale industrial production of catalysts. Traditional high-temperature treatment requires several hours of continuous heating, whereas photothermal technology can complete the entire conversion process in just 0.02 seconds, resulting in an unprecedented increase in energy efficiency. Considering the global development trends of the hydrogen energy market, this technological breakthrough holds significant strategic importance. The latest report by the International Hydrogen Energy Committee indicates that catalyst costs are one of the key factors affecting the commercial competitiveness of hydrogen energy technologies. Especially in the field of electrolytic hydrogen production, catalyst costs account for a significant portion of the total investment in such systems, and fluctuations in their prices directly affect the market acceptance of hydrogen energy. The technical breakthroughs achieved by the South Korean team have created the conditions for a significant reduction in hydrogen energy costs by improving catalytic efficiency and reducing reliance on precious metals. More importantly, the reduction in manufacturing costs resulting from simplified processes will further amplify the economic advantages of this technology. The reduction in equipment investment, the shortening of production cycles, and the decrease in maintenance costs together constitute the overall economic benefits of this technology.
The chain reaction of industrial transformation: When explaining this technology, Professor Il-Doo Kim emphasized that this is the first time in the world that a direct-contact photothermal annealing process has been able to reach 3000 degrees Celsius within 0.02 seconds, and it is expected to accelerate the commercialization of various technology fields such as hydrogen energy, gas sensing, and environmental catalysis. The impact of this technology extends far beyond the hydrogen production sector itself. In gas sensor manufacturing, high-performance catalysts are the key components that enable accurate detection and rapid response. The complex manufacturing processes and high costs of traditional preparation methods severely hinder the widespread use of high-end sensing devices. The cost advantages and improved efficiency of new technologies are expected to promote the widespread use of gas sensing technology in areas such as industrial safety monitoring, environmental quality testing, and medical diagnosis. The field of environmental catalysis also faces significant opportunities. With the continuous improvement of global environmental standards, there is a growing demand for efficient catalysts in applications such as exhaust gas treatment, wastewater purification, and soil remediation. The ultra-fast manufacturing technology developed by the Korean team provides more cost-effective material solutions for these applications, and is expected to accelerate the development of environmental treatment technologies and reduce their costs. From a broader perspective of materials science, ultrafast photothermal synthesis technology represents an important direction for development in the field of material preparation. The principles of this technology are applicable not only to catalyst manufacturing, but also hold great potential for use in various high-tech fields such as semiconductor materials, energy storage devices, and functional coatings. As relevant technologies continue to improve, breakthrough innovative applications are expected to emerge in more fields. However, the industrialization and promotion of this technology still need to overcome some practical challenges. The long-term operational stability of the equipment needs to be thoroughly verified in a large-scale production environment, and the service life and replacement costs of the xenon lamp system also require further optimization. Furthermore, precise control of process parameters for different material systems requires additional research and development efforts. Despite these technical challenges, the strategic value of this breakthrough cannot be underestimated. It not only provides a key technical pathway for breaking through the costs of clean energy technologies, but also injects new momentum into accelerating the global energy transition. Against the backdrop of the rapid development of the hydrogen energy industry and increasingly stringent environmental regulations, this revolutionary catalyst manufacturing technology holds the potential to serve as a key catalyst for driving transformation in related industries.
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