Strongly Coupled Ag/Sn-SnO Nanosheets Toward CO Electroreduction to Pure HCOOH Solutions at Ampere-Level Current.

Electrocatalytic reduction of CO converts intermittent renewable electricity into value-added liquid products with an enticing prospect, but its practical application is hampered due to the lack of high-performance electrocatalysts. Herein, we elaborately design and develop strongly coupled nanosheets composed of Ag nanoparticles and Sn-SnO grains, designated as Ag/Sn-SnO nanosheets (NSs), which possess optimized electronic structure, high electrical conductivity, and more accessible sites. As a result, such a catalyst exhibits unprecedented catalytic performance toward CO-to-formate conversion with near-unity faradaic efficiency (≥ 90%), ultrahigh partial current density (2,000 mA cm), and superior long-term stability (200 mA cm, 200 h), surpassing the reported catalysts of CO electroreduction to formate.

Sphere-rod-like Ag/AgCl@FeO Z-scheme heterojunction as photocatalysts for efficient degradation of tetracycline under visible light irradiation.

Integration of multi-functional components into one is urgent for creating a viable platform to improve photocatalytic efficiency for environmental treatment. Here, MIL-88B-NH (Fe) was firstly employed to capture Ag cation for the formation of AgCl@MIL-88B-NH (Fe), and then turned into the strongly coupled Ag/AgCl@FeO with sphere-rod-like structure. As prepared Z-scheme Ag/AgCl@FeO heterojunction exhibited outstanding photocatalytic performance of tetracycline (TC) with a removal efficiency of 94.

Construction of graphene oxide-coated zinc tetraphenyporphyrin nanostructures for photocatalytic CO reduction to highly selective CH product.

The zinc-based photocatalysts for CO reduction have attracted increasing attention, however, usually exhibit low CO-to-CH selectivity. Here, the graphene oxide (GO)-coated zinc tetraphenylporphyrin (ZnTPP/GO) nanocomposites are successfully synthesized through a simple method. It is found that with the increase of GO content, the crystallinity of ZnTPP nanocrystals enhances with the size decrease, and then the light absorption can easily match with the solar spectrum.

Defective MNiFeO (M = Cu, Zn, Co, Mn) NRs derived from cation-exchanged FeNi-MOFs for catalytic nitroarene hydrogenation.

Catalytic hydrogenation reduction provides a potential route to detoxify nitro compounds. Spinel NiFeO (NiFeO) serves as a natural abundance and low-cost catalyst but suffers from low catalytic activity due to poor redox nature and limited active sites. Herein, defective MNiFeO (M = Cu, Zn, Co, Mn) nanorods (NRs) were synthesized by pyrolysis of cation-exchanged FeNi-MOFs.

Heterostructure of Semiconductors on Self-Supported Cuprous Phosphide Nanowires for Enhanced Overall Water Splitting.

Rational design, controllable synthesis, and an in-depth mechanism study of Cu-based bifunctional semiconductor heterostructures toward overall water splitting (OWS) are imperative but still face challenges. Herein, n-type iron oxide and p-type nickel phosphide and cobalt phosphide are respectively coupled with p-type cuprous phosphide nanowires on Cu foams via a general growth-phosphorization strategy. These self-supported semiconductor heterojunctions with different built-in potentials () are used as binder-free electrodes for OWS and exhibit significantly improved electrocatalytic activities compared to their counterparts.

Urchin-like hybrid nanostructures of CuO/FeO from Cu-mediated pyrolysis of Fe-MOFs for catalytic reduction of organic pollutants.

MOFs have been widely used as templates to design and construct catalysis materials, such as LDH, metal oxides, and carbon. Herein, we developed a Cu-mediated pyrolysis protocol for the synthesis of urchin-like CuO/FeO hybrid nanostructures using Fe-MOFs as the precursor. The hierarchical hybrids were composed of an inner CuO-dispersed FeO octahedral matrix covered with radially grown FeO nanorods.

Assembly of Cobalt Layered Double Hydroxide on Cuprous Phosphide Nanowire with Strong Built-In Potential for Accelerated Overall Water Splitting.

Heterostructure plays an important role in boosting the overall water splitting (OWS) performance of nonprecious metal electrocatalysts. However, rational design and synthesis of semiconductor heterojunctions especially for Cu-based ones as efficient bifunctional electrocatalysts toward hydrogen evolution reaction (HER) and oxygen evolution reaction (OER) still face challenges, and the in-depth study of catalytic mechanisms is urgently needed. Herein, n-type cobalt layered double hydroxide nanosheets are assembled on p-type cuprous phosphide nanowire to form p-n junction.