Modular Synthesis of a Dual Metal–Dual Semiconductor Nano‐Heterostructure

Abstract

Reported is the design and modular synthesis of a dual metal–dual semiconductor heterostructure with control over the dimensions and placement of its individual components. Analogous to molecular synthesis, colloidal synthesis is now evolving into a series of sequential synthetic procedures with separately optimized steps. We detail the challenges and parameters that must be considered when assembling such a multicomponent nanoparticle, and their solutions. This multicomponent nanosystem, Ru‐CdSe@CdS‐Pt, was designed to achieve charge carrier separation and directional transfer across different interfaces toward two separate redox catalysts. This heterostructure may potentially serve as a nanometric closed circuit photoelectrochemical cell.

Assembling Polyoxo‐Titanium Clusters and CdS Nanoparticles to a Porous Matrix for Efficient and Tunable H2‐Evolution Activities with Visible Light

“…However, due to the fast recombination of photogenerated electron–hole pairs, the serious photocorrosion, and the lack of catalytic sites, the activities and applications of pure CdS have been greatly obstructed. Despite that many different methods, such as coupling with cocatalysts, incorporating in porous materials, and modifying morphology, have already been developed to overcome the above problems, it still remains a big challenge to construct efficient CdS‐based H 2 production system.…”

Welch Award in Chemie:A. P. Alivisatos und C. M. Lieber / Wilhelm‐Exner‐Medaille:J. M. DeSimone / Ernst‐Schering‐Preis:P. Cramer

“…Aktuell untersucht er Anwendungen von Nanokristallen im Zusammenhang mit erneuerbaren Energien. Er war Autor einer Angewandte‐Chemie ‐Zuschrift über die modulare Synthese nanoskopischer Metall‐Halbleiter‐Heterostrukturen und eines Beitrags in Advanced Materials über die chemische Steuerung von Plasmonen in Metallchalkogenid‐ und Metalloxid‐Nanostrukturen …”

Size‐ and Interface‐Modulated Metal–Insulator Transition in Solution‐Synthesized Nanoscale VO2‐TiO2‐VO2 Heterostructures

“…Nanoscale heterostructures that integrate multiple materials through direct solid‐state interfaces can achieve complex and synergistic properties not accessible in the individual components . In some cases, these synergistic optical, magnetic, or photocatalytic functionalities can be further tuned by modulating the sizes and compositions of the constituent nanoparticle materials, as well as details of the particle–particle interfaces . While the scope of interface‐modulated synergistic properties in solution‐synthesized nanoscale heterostructures is expanding, opportunities exist for incorporating new classes of materials that impart additional functions.…”