Abstract
Ammonia (NH(3)) potentially harms human health, the ecosystem, industrial and agricultural production, and other fields. Therefore, the detection of NH(3) has broad prospects and important significance. Ti(3)C(2)T(x) is a common MXene material that is great for detecting NH(3) at room temperature because it has a two-dimensional layered structure, a large specific surface area, is easy to functionalize on the surface, is sensitive to gases at room temperature, and is very selective for NH(3). This review provides a detailed description of the preparation process as well as recent advances in the development of gas-sensing materials based on Ti(3)C(2)T(x) MXene for room-temperature NH(3) detection. It also analyzes the advantages and disadvantages of various preparation and synthesis methods for Ti(3)C(2)T(x) MXene's performance. Since the gas-sensitive performance of pure Ti(3)C(2)T(x) MXene regarding NH(3) can be further improved, this review discusses additional composite materials, including metal oxides, conductive polymers, and two-dimensional materials that can be used to improve the sensitivity of pure Ti(3)C(2)T(x) MXene to NH(3). Furthermore, the present state of research on the NH(3) sensitivity mechanism of Ti(3)C(2)T(x) MXene-based sensors is summarized in this study. Finally, this paper analyzes the challenges and future prospects of Ti(3)C(2)T(x) MXene-based gas-sensitive materials for room-temperature NH(3) detection.