Versatile Synthesis of Hollow Metal Sulfides via Reverse Cation Exchange Reactions for Photocatalytic CO₂ Reduction

Abstract

Herein, we explore ag eneral Cu 2Àx Sn anocube template-assisted and reverse cation exchange-mediated growth strategy for fabricating hollowmultinary metal sulfide. Unlike the traditional cation exchange method controlled by the metal sulfide constant, the introduction of tri-n-butylphosphine (TBP) can reverse cation exchange to give as eries of hollowm etal sulfides.Avariety of hollowm ultinary metal sulfide cubic nanostructures has been demonstrated while preserving anisotropic shapes to the as-synthesized templates, including binary compounds (CdS,Z nS,A g 2 S, PbS,S nS), ternary compound (CuInS 2 ,Z n x Cd 1Àx S), and quaternary compound (single-atom platinum anchored Zn x Cd 1Àx S; Zn x Cd 1Àx S-Pt 1 ). Experimental and density functional theory (DFT) calculations showt hat the hollowm etal sulfide semiconductors obtained could significantly improve the separation and migration of photogenerated electron-hole pairs.Owing to the efficient charge transfer,t he Zn x Cd 1Àx S-Pt 1 exhibited outstanding photocatalytic performance of CO 2 to CO,w ith the highest CO generation rate of 75.31 mmol h À1 .

Integrated Photothermal‐Pyroelectric Biosensor for Rapid and Point‐of‐Care Diagnosis of Acute Myocardial Infarction: A Convergence of Theoretical Research and Commercialization

“…In comparison to commercially available ELISA kits, the IPPBA protocol was found to be able to consistently reflect cTn I levels in plasma with t exp values < 2.78 for all test results. [46][47][48][49] Standard doses of cTnI (2 and 20 ng mL -1 ) were administered to the above series of plasma samples, and secondary tests were performed to assess the recovered cTn I levels, as shown in Figure 6D. The results of the seven sets of tests were calculated and the recoveries of the real samples were above 90% for all the tested samples, whether at high or low concentrations, and for the low concentration samples the recoveries could reach above 95%.…”

Emerging Stacked Photocatalyst Design Enables Spatially Separated Ni(OH)2 Redox Cocatalysts for Overall CO2 Reduction and H2O Oxidation

“…Moreover, isotope labeling experiment has been performed over rGO/CdS@Ni(OH) 2 with 13 CO 2 as a substrate. As displayed in Figure 3b, the mass spectrum signal of 13 CO (m/z = 29) can be clearly seen. The above results definitely confirm that the CO indeed derives from the photoreduction of CO 2 .…”

“…[5][6][7][8][9][10] In particular, metal sulfides have aroused enormous interest in photocatalytic CO 2 fixation because of their unique electronic and optical characteristics. [11][12][13][14][15] Nevertheless, their CO 2 conversion efficiencies are still far from fulfilling the industrial application requirements. Generally, the semiconductor based photocatalytic process involves three essential steps: i) charge generation under photoexcitation; ii) charge separation and transfer to the surface; iii) charge participation in surface redox reactions.…”

Optimized hot electron injection from Cu nanoparticles to S-doped C3N4by the formed S–Cu bonds for an enhanced photocatalytic performance

“…Therefore, the realization of interfacial optimization can efficiently improve the injection rate of hot carriers, and two solutions are proposed: (1) an optimized synthesis process to reduce interface defects, which is usually realized under harsh experimental conditions for specific nanocomposites; 13,15 (2) the realization of strong chemical bonding between SPR nanostructures and photocatalysts to passivate interface defects. Recently, we have realized the chemical bonding between CdS and Ag NPs by the introduction of L-cysteine bridging ligands to improve the injection rate of hot electrons.…”