Spatial charge separation is achieved by morphologically tuning TiO₂ nanomaterials along with graphene by a hydrothermally modified sol-gel synthetic route. Morphology engineered TiO₂ is constructed between nanocuboids with high energy {010}/{100} and {001}facets, and nanoellipsoids exposing low energy {101} facets. In situ grown titania hybridized with graphene (0.1% w/w) introduced chemical linkages as affirmed by XPS, Raman and FTIR studies. PL and TCSPC measurements greatly supported interfacial charge separation and reduced recombination rate in the hybrids. Photocatalytic studies determined that hybrids with TiO₂ nanoellipsoids favoured hydrogen production as high as 18,266.6 μL/gm/L/hr under solar light illumination. While the hybrid with shared morphology of nanoellipsoids and nanocuboids for TiO₂ exhibited comparatively less H₂ production (13,967 μL/gm/L/hr) but displayed extreme photoinduced wettability of ~0° within 10 min of light irradiation. The divergence in the performance of morphologically tuned hybrids is explained using a plausible mechanism, assisted by photoconductivity and Hall-Effect measurements.

通过水热改性的溶胶-凝胶合成途径，将TiO ₂纳米材料与石墨烯一起进行形态学调节，实现了空间电荷分离。形态工程学的TiO ₂是在具有高能{010} / {100}和{001}面的纳米立方与暴露出低能{101}面的纳米椭球之间构造的。XPS，拉曼和FTIR研究证实，与石墨烯（0.1％w / w）杂交的原位生长的二氧化钛引入了化学键。PL和TCSPC的测量极大地支持了界面电荷的分离并降低了杂化体的重组率。光催化研究确定与TiO ₂杂化在太阳光照射下，纳米椭球体的制氢量高达18,266.6μL/ gm / L / hr。尽管具有纳米椭圆体和纳米立方的共同形态的TiO ₂杂化物显示出相对较少的H ₂产生（13,967μL/ gm / L / hr），但在光照射10分钟内显示出〜0°的极高光致可湿性。借助合理的机理，借助光导率和霍尔效应测量，可以解释形态学调整的杂种的性能差异。