將無金屬之光催化材料PTI與二氧化鈦P25材料進行複合以形成含有不同二氧化鈦比例之複合材料。在本篇研究中發現複合材料中二氧化鈦比例以及均勻度是影響其在光催化應用中關鍵的角色。四組不同二氧化鈦含量之複合材料（10, 19, 28, 39 at%） 經由水熱法合成，十二烷基硫酸钠（Sodium dodecyl sulfate，SDS）被使用作為表面活性劑以利於二氧化鈦在複合材料中的分散性。
本篇研究使用了多樣儀器及技術，包含X光繞射儀、Rietveld analysis、穿透式電子顯微鏡、傅立葉轉換紅外光譜儀、X射線光電子能譜、光激發螢光頻譜儀、比表面積與孔隙度分析儀（BET），分別可以用於量測材料之相態、各成分之含量、形貌、化學鍵結、光學性質、電子電洞再結合速率以及表面積。我們發現碳化氮（PTI）-二氧化鈦（19 at%）在亞甲基藍及玫瑰紅B降解實驗以及光電化學實驗中有最好的表現，其優秀的表現可歸因於更高的光吸收以及大幅下降之再結合速率。更高的表面積也增進了其光降解實驗的表現。

A metal-free photocatalytic material, poly triazine imide (PTI), was coupled P25 (TiO2) with various ratios to form various composites.
In this study, we found that a ratio and uniformity of TiO2 nanoparticle were crucial for PTI-TiO2 composites in photocatalytic applications. Various PTI-TiO2 (x at%) (x = 10, 19, 28, and 39) composites were hydrothermally synthesized. SDS surfactants were used to improve the dispersion of TiO2 nanoparticles.
Various techniques including XRD, Rietveld analysis, TEM, FTIR, XPS, PL, and BET were employed to determine various characteristics, including phases, constituent component ratios, morphologies, chemical binding, optical properties, recombination rates of charge carriers, and surface areas. We found that the PTI-TiO2 (19 at%) composite exhibited the best photodegradation of methylene blue and Rhodamine B and photoelectrochemical reactions. The excellent photocatalytic performance was attributable to enhanced light harvest and substantially reduced recombination rates of photoinduced charge carriers. Improved surface areas were crucial for enhanced photodegradation.

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