Wide-bandgap NiO nanoparticles (NPs) of 15 nm to 30 nm were synthesized by a facile sol–gel technique in basic medium from the precursor salt followed by calcination at 700°C. As-prepared NPs were used as an inorganic counterpart in the construction of sulfonic-acid-functionalized porphyrin (SAP)-based dye-sensitized solar cells (DSSCs). The procedure involved adsorption of SAP on NiO NPs by thoroughly mixing SAP aqueous solution with a suspension of NiO NPs for 18 h at room temperature. Successful chemisorption of SAP on NiO NPs was confirmed by Fourier-transform infrared, ultraviolet–visible absorption, and fluorescence emission spectroscopy. The fabricated nanohybrid assembly presented incident photon to current conversion efficiency of up to 0.2% for the optimum mixing composition of 30 µL SAP with 0.25 mg/mL NiO NPs in deionized water. The facile and ultrasafe nanofabrication method described herein represents a progressive step towards sustainable DSSC research.

Graphical Abstract

中文翻译：

---

NiO 纳米颗粒-卟啉基有机-无机纳米杂化组件的制备和表征：染料敏化太阳能电池结构中的可持续氧化还原介质

15 nm 至 30 nm 的宽带隙 NiO 纳米粒子 (NPs) 通过简便的溶胶-凝胶技术在碱性介质中由前体盐合成，然后在 700°C 下煅烧。制备的 NPs 被用作构建磺酸功能化卟啉 (SAP) 基染料敏化太阳能电池 (DSSCs) 的无机对应物。该过程涉及通过在室温下将 SAP 水溶液与 NiO NPs 悬浮液彻底混合 18 小时，将 SAP 吸附在 NiO NPs 上。傅里叶变换红外光谱、紫外-可见吸收光谱和荧光发射光谱证实了 SAP 在 NiO NPs 上的成功化学吸附。对于 30 µ的最佳混合成分，制造的纳米混合组件的入射光子到电流转换效率高达 0.2% L SAP，在去离子水中含有 0.25 mg/mL NiO NP。本文所述的简便且超安全的纳米制造方法代表了朝着可持续 DSSC 研究迈出的一步。

图形概要