Engineering Low-Crystallinity-Induced Localized Dipole Fields in Cd0.5Zn0.5S for Synergistic Enhancement of Photocatalytic H2O2 Generation
发布时间：2026-09-15
点击次数：
- 发布时间：
- 2026-09-15
- 论文名称：
- Engineering Low-Crystallinity-Induced Localized Dipole Fields in Cd0.5Zn0.5S for Synergistic Enhancement of Photocatalytic H2O2 Generation
- 教研室：
- 催化反应工程与吸附材料
- 发表刊物：
- ACS Applied Materials & Interfaces
- 摘要：
- ThedirectphotocatalyticproductionofH2O2 from
waterandairoffersasustainableroutetodecarbonizetheenergy
intensive anthraquinoneprocess.However, its efficiency remains
limitedby sluggishexcitondissociationand rapidcharge carrier
recombination, typically requiring sacrificial agents that compro
mise the process economics. Herein, we design Cd0.5Zn0.5S
nanoparticles with symmetry-broken atomic arrangements by
modulating crystallinity, an intrinsic material property. This
modulation generates numerous localized dipole fields. These
fields actively promote exciton dissociation and direct charge
carrier migration, boosting charge utilization. As a result, the
optimizedcatalyst achievedanH2O2 yieldof 1.36mmol g−1h−1
usingonlydissolvedO2astheelectronacceptorandwithoutadditionalsacrificialagents.Theroleof thedipolefieldsinpromoting
excitondissociationandcharge separationhasbeenunequivocallydemonstrated throughKelvinprobe forcemicroscopy, time
resolvedphotoluminescence,andfemtosecondtransientabsorptionspectroscopy.Thisworkestablishescrystallinity-mediateddipole
engineeringasaneffectivestrategyforcarriermanagement inphotocatalyticsystemsbeyondconventional crystallinematerials.
- 论文类型：
- 期刊论文
- 是否译文：
- 否
- 收录刊物：
- SCI