Fabrication of an efficient, stable, and versatile photocatalysts for the energy and environment remediation applications is an urgent task for the current researchers. In this work, we have successfully synthesized a versatile hybrid photocatalysts, i.e.; CdMoO₄/g-C₃N₄ (CMO/CN) by a facile and simple one-pot in-situ hydrothermal method. Here CdMoO₄ (CMO) microspheres were deposited on the g-C₃N₄ (CN) sheets. Fabricated CN, CMO, and CMO/CN composite photocatalysts were analyzed with various characterization techniques like UV–visible diffuse reflectance spectra (UV–Vis DRS), photoluminescence spectroscopy (PL), time-resolved fluorescence lifetime (TRFL), electrochemical impedance spectroscopy (EIS), powder X-ray diffraction (PXRD), Fourier transform infrared spectroscopy (FT-IR), Scanning electron microscopy–energy-dispersive X-ray analysis (SEM-EDX), transmission electron microscope (TEM), thermogravimetric analysis (TGA), X-ray photoelectron spectroscopy (XPS), and Brunauer–Emmett–Teller (BET). The results reveal that the formation of a strong heterojunction between two semiconductors leads to the formation of active photocatalyst. Furthermore, as-synthesized materials were tested for the photoelectrocatalytic (PEC) oxygen evolution reactions (OERs) in acidic medium, and photocatalytic (PC) degradation of methylene blue (MB) under light irradiation. Among all tested samples, CMO/CN-10 has shown the highest current density 52.74 mA cm⁻² at 1.95 V with lowest over potential of 0.70 mV on glassy carbon electrode for OER in acidic medium under the light irradiation. The PC degradation rate constant of CMO/CN-10 composite in MB solution is k = 2.0 × 10⁻² min⁻¹, whereas for the pure CMO and CN degradation rate constant is k = 5.7 × 10⁻³ min⁻¹ and k = 1.2 × 10⁻² min⁻¹, respectively. This enhancement in PEC and PC properties is due to the fast migration of photo-induced electrons in the case of CMO/CN-10 nanocomposite. Trapping experiment results reveal the major reactive species for PC degradation of MB is •OH (hydroxyl radicals) and h⁺ (holes), respectively, and suitable PC reaction mechanism also proposed for CMO/CN-10 composites. Based on the above remarkable results, it would be a potential nanocomposite for the PEC oxygen evolution and PC degradation of MB under light illumination.

对于能源和环境修复应用而言，制造高效，稳定和通用的光催化剂是当前研究人员的紧迫任务。在这项工作中，我们已经成功地合成了一种多功能的杂化光催化剂，即；CdMoO ₄ / gC ₃ N ₄（CMO / CN）通过一种简便的单锅原位水热法进行。在这里，CdMoO ₄（CMO）微球沉积在gC ₃ N _4上（CN）张。使用各种表征技术，例如紫外可见漫反射光谱（UV-Vis DRS），光致发光光谱法（PL），时间分辨荧光寿命（TRFL），电化学阻抗光谱法（CN），对制成的CN，CMO和CMO / CN复合光催化剂进行了分析。 EIS），粉末X射线衍射（PXRD），傅立叶变换红外光谱（FT-IR），扫描电子显微镜–能量色散X射线分析（SEM-EDX），透射电子显微镜（TEM），热重分析（TGA） ），X射线光电子能谱（XPS）和Brunauer–Emmett–Teller（BET）。结果表明，两个半导体之间形成强异质结会导致形成活性光催化剂。此外，测试了合成后的材料在酸性介质中的光电催化（PEC）氧释放反应（OER），以及在光照射下对亚甲基蓝（MB）的光催化（PC）降解。在所有测试样品中，CMO / CN-10的最高电流密度为52.74 mA cm在光照射下，酸性介质中用于OER的玻璃碳电极上的1.95 V时的^-2在0.70 mV的最低过电位。MB溶液中CMO / CN-10复合材料的PC降解速率常数为k = 2.0×10 ^-2  min ^-1，而纯CMO和CN的PC降解速率常数为k = 5.7×10 ^-3  min ^-1和k分别为1.2×10 ^-2  min ^-1。PEC和PC性能的这种增强是由于在CMO / CN-10纳米复合材料的情况下光诱导电子的快速迁移。诱捕实验结果表明，MB的PC降解的主要反应物种是•OH（羟基自由基）和h ⁺（孔），并分别提出了适用于CMO / CN-10复合材料的PC反应机理。基于上述显着结果，在光照射下，它可能是MB的PEC氧释放和PC降解的潜在纳米复合材料。