In this study, novel three-dimensional ribbon-like composite materials have been introduced for selectively capturing H 2 S in a low-temperature dry anaerobic environment. First, a ribbonlike basic copper carbonate precursor with Zn doping supported on the activated semicoke (ASC) was successfully synthesized in situ by a two-step hydrothermal method for the first time. The porous Zn− Cu materials obtained after calcination were applied as a sorbent to remove H 2 S under anaerobic conditions at a low temperature. Effects of the heat treatment temperature, Cu loading content, and Zn doping content on the anaerobic desulfurization performance of Zndoped CuO x /ASC sorbents were investigated. The optimal Zndoped CuO x /ASC sorbent showed a satisfactory activity and selectivity to capture H 2 S efficiently with a breakthrough capacity of 126 mg/g. Further mechanism study demonstrates that the super desulfurization performance of this sorbent is mainly attributed to abundant pore distribution, the synergistic effect between copper and zinc, the extensive surface active oxygen, and so forth.

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In this work, we systematically analyzed the structure–activity relationship and synergistic mechanism of activated semi-coke (ASC)-loaded multi-valence CuxO for the low-temperature NO-SCR process by NH3.

Summary The design of CuS/SiO2@n‐octadecane nanocapsules with high sensitivity to light and heat is being conducive to photothermal conversion and efficient utilization of solar energy. In this work, CuS was deposited on the surface of the SiO2 shell by the chemical bath deposition method. Through the characterization of microstructure and chemical composition, the granular CuS crystal was uniformly coated on the SiO2 shell. The synthesized nanocapsules are spherical and have a perfect core‐shell structure. The quantity, distribution, and size of CuS deposited on the shell can be adjusted by regulating the synthesis parameters. The prepared CuS/SiO2@n‐octadecane nanocapsules have a melting temperature of 26.85°C and melting enthalpy of 65.0 J/g at the optimum preparation condition (10 mmol/L cetyltrimethylammonium bromide, 70°C, 0.02 mol/L Cu2+) and have excellent durability. The light absorption performance of CuS/SiO2 nanocapsules in the Vis‐NIR was significantly enhanced, photothermal conversion efficiency reached 52.7%. In addition, the CuS/SiO2 nanocapsules also showed good photocatalytic performance, and the degradation degree of methyl orange reached 71% within 3 hours. These results show that the designed photo‐driven nanocapsules have excellent performance and great potential in solar energy utilization and intelligent fabric. Highlights We have creatively synthesized PCM nanocapsules with CuS/SiO2 shells. The melting enthalpy and melting temperature are 65.0 J/g and 26.85°C, respectively. The activity of the SiO2 shell was increased by amino coupling agent modification. CuS has increased 4‐5 times of photothermal conversion efficiency in Vis‐NIR.

Na2CO3fibers coated on activated alumina were successfully prepared; they showed higher efficiency HCl adsorption at the low temperature of 423 K.