摘要：Charge separation is a crucial problem in *** used a wet‐chemical method to synthesize asymmetrically tipped PdS‐CdSe‐seeded CdS(CdSe@CdS)‐Au nanorod(NR)heterostructures(HCs).In these HCs,electrons and holes are rapidly separated and transported to opposite ends of the NRs by internal electric *** ultraviolet‐visible absorption spectra showed strong electronic coupling between both tips and the CdS ***‐CdSe@CdS‐Au achieved a H2production rate of ca.1100?mol in5h;this is two orders of magnitude greater than the rate achieved with Au‐CdSe@CdS NRs with only one ***‐CdSe@CdS‐Au NRs can withstand4h of photoirradiation,compared to1.5h for CdSe@CdS NRs,indicating that the photostability of PdS‐CdSe@CdS‐Au is much better than that of *** greatly improved photocatalytic activity and stability are attributed to efficient charge separation and rapid charge transport in the PdS‐CdSe@CdS‐Au HCs.