Electric‐Field‐Mediated Electron Tunneling of Supramolecular Naphthalimide Nanostructures for Biomimetic H₂ Production

Abstract

The design and synthesis of two semiconducting bis (4-ethynyl-bridging 1, 8-naphthalimide) bolaamphiphiles (BE-NI-COO À and BENI-NH 3 + )t of abricate supramolecular metal-insulator-semiconductor(MIS) nanostructures for biomimetic hydrogen evolution under visible light irradiation is presented. AH 2 evolution rate of ca. 3.12 mmol g À1 •h À1 and an apparent quantum efficiency (AQE) of ca. 1.63 %a t4 00 nm were achieved over the BENI-COO À -NH 3 + -Ni MIS photosystem prepared by electrostatic self-assembly of BENI-COO À with the opposite-charged DuBois-Ni catalysts.T he hot electrons of photoexcited BENI-COO À nanofibers were tunneled to the molecular Ni collectors across asalt bridge and an alkylr egion of 2.2-2.5 nm length at ar ate of 6.10 10 8 s À1 , which is five times larger than the BENI-NH 3 + nanoribbons (1.17 10 8 s À1 ). The electric field benefited significantly the electron tunneling dynamics and compensated the chargeseparated states insufficient in the BENI-COO À nanofibers.

Simultaneous photocatalytic H2generation and organic synthesis over crystalline–amorphous Pd nanocube decorated Cs3Bi2Br9

“…Photocatalytic H 2 generation is considered a promising strategy for the sustainable production of energy. [1][2][3][4][5] Recently, metal halide perovskites (MHPs) have emerged as efficient H 2 evolution photocatalysts. [6][7][8] However, most of the H 2 evolution reaction (HER) experiments are performed in saturated aqueous hydrohalic acid HX (X = Br and I) solutions using the dynamic dissolution-reprecipitation equilibrium to keep the MHP stable.…”

Dual Function of Naphthalenediimide Supramolecular Photocatalyst with Giant Internal Electric Field for Efficient Hydrogen and Oxygen Evolution

“…[15] For example, Long's group designed a supramolecular artificial photosynthetic system by integrating NDI-based molecules and Ni co-catalysts, which exhibited efficient H 2 production activity with an apparent quantum efficiency (AQE) of 1.63% at 400 nm. [16] Currently, NDI-based supramolecular photocatalysts have not yet reached the level of state-of-the-art photocatalysts due to their sluggish charge separation and migration in the bulk phase. Additionally, NDI-based supramolecular materials are primarily utilized for the photocatalytic H 2 evolution half-reaction, with limited research on the water oxidation half-reaction, which is the crucial step in the water splitting reaction.…”

Graphdiyne (CnH2n−2) coupled with ZnCo-MOF double S-scheme heterojunction forms an efficient electron transport layer and its characterizationvia in situXPS

“…26–30 In comparison to the conventional type II and type Z hierarchical junctions, the new S-scheme heterojunctions provide the powerful oxidation reduction capacity of composite materials and hold tremendous potential for photocatalysis. 31,32…”

“…[26][27][28][29][30] In comparison to the conventional type II and type Z hierarchical junctions, the new S-scheme heterojunctions provide the powerful oxidation reduction capacity of composite materials and hold tremendous potential for photocatalysis. 31,32 In this study, firstly, graphite acetylene was synthesized via an organic synthesis method, and then a GDY/CuS/ ZnCoS 2 series S-scheme heterojunction was constructed via the hydrothermal reaction. To identify the structure of graphdiyne it was characterized via FT-IR spectroscopy and Raman spectroscopy.…”