Progress and current challenges for CO2 capture materials from ambient air

Abstract

As a major component of greenhouse gases, excessive carbon dioxide (CO2) in the atmosphere can affect human health and ecosystems. Therefore, the capture and transformation of CO2 has attracted extensive attention in academic circles in recent years. Direct air capture (DAC) of CO2 is a technology developed in recent years that can capture and collect CO2 directly from the ambient air, which is a potential negative CO2 emission technology. Currently, DAC technology is being promoted worldwide. Therefore, given the lack of a timely review of the latest developments in DAC technology, an appropriate and timely summary of this technology and a comprehensive understanding of it is necessary. In this paper, we review the research progress of adsorbent materials for directly capturing CO2 from ambient air in recent years, including liquidbased absorbent, solid adsorbent, and moisture-swing adsorbent. How their chemical composition, structure, morphology, modification method affects their performance and long-term use is thoroughly discussed. In addition to efficient CO2 adsorption properties, designing low-cost sustainable materials is critical, especially for practical applications. Therefore, the technical and economic evaluation of CO2 adsorbents directly capturing from ambient air is reviewed. This review is of great significance for researchers to fully understand the development status and future trends of direct capture of CO2 from ambient air.

A Review on the Recent Scientific and Commercial Progress on the Direct Air Capture Technology to Manage Atmospheric CO2 Concentrations and Future Perspectives

“…42 The amount of carbonation was observed to have risen to 80% after 100 min in the presence of water vapor, and this progressed at a pace of approximately 22 times faster in the first 20 min of the reaction. 21,54 The usage of Ca(OH) 2 followed a similar pattern, although the carbonation reaction occurred at a more rapid pace and with a higher degree of conversion, both with and without the presence of moisture. Ca(OH) 2 carbonation, like CaO, requires a somewhat lower carbonation temperature of 200− 425 °C.…”

Progress of layered double hydroxide-based materials for supercapacitors

“…With the development of society, the use of non-renewable fossil fuels such as coal, oil and natural gas is increasing, leading to more and more serious environmental pollution. 1 The development of new energy can effectively solve this problem. 2 Therefore, scientists have devoted themselves to the field of new energy, which is also a research hotspot today.…”

A Shish-Kebab Superstructure Film for Personal Radiative Cooling

“…With the aggravation of global warming, heat stress becomes an increasingly serious problem, which could cause physical discomfort to people, increase the risk of disease, and seriously threaten human health. , Rather than cooling the human body directly, buildings around people are cooled first in the traditional cooling process, which will inevitably generate energy waste. − Therefore, the concept of personal thermal management (PTM) has been proposed. − It focuses only on heating and cooling the human body and the local environment, thus reducing unnecessary energy consumption to the surrounding building. − In a normal environment, the body skin, which is approximately 34 °C, emits mid-infrared (MIR) radiation with a wavelength of 7 to 14 μm to the outside. This accounts for nearly 60% of the human body’s heat loss (Figure a) .…”