Cu2O、WO3有很好的可见光响应，在光催化领域具有良好的应用前景，逐渐成为国内外研究的热点。本文采用葡萄糖还原法制备Cu2O，低温水热法制备了WO3，化学沉淀法制备了核壳结构的Cu2O\WO3复合光催化剂。 通过 X-射线衍射（XRD），扫描电子显微镜（SEM）、紫外可见光谱分析（UV-vis）及傅里叶红外光谱分析（FI-IR）对其进行了表征，利用其对亚甲基蓝溶液的降解效果，测试其光催化性能。研究搭建了气相光催化反应系统，采用聚酯纤维棉负载光催化剂，利用氙灯模拟可见光进行了光催化降解气态甲醛实验。 结果表明： （1）用葡萄糖还原法制备的Cu2O颗粒的尺寸较小，一般在50 nm以内，颗粒大小比较均匀，呈现正方体或微球型，结构清晰，颗粒完整。测试的XRD结果表明制备的红褐色粉体为Cu2O。由Cu2O的紫外-可见光谱曲线可知，在波长360nm以上，吸光度明显增加，在580nm左右出现波峰。由Cu2O的傅里叶红外图谱可以看出存在氧化性的-OH基。通过对亚甲基蓝溶液的降解实验得出，在前30min，由于氧化亚铜的光催化性和其吸附性，导致对亚甲基蓝降快速降解，30min后，氧化亚铜对亚甲基蓝的达到吸附饱和或者光催化剂产生光腐蚀，导致亚甲基蓝的吸光度趋于平稳状态。 （2）采用低温水热法制备的WO3分体，晶体结构清晰，粒径较小。测试的XRD结果可知，低温制备的WO3为典型的斜方晶系水合WO3•H2O。由WO3的SEM电镜可以看出，WO3的粒径较小，一般在200nm左右。晶体大小均匀，比表面积大，晶体呈现片状，相互粘结。用低温水热法制备的WO3粉体其傅里叶红外测试结果存在羟基-OH，说明制备的WO3光催化剂具有氧化性。 （3）以Cu2O为核，表面负载WO3为壳，制备出了核壳结构的Cu2O\WO3复合光催化剂，研究了其光催化特性。其XRD结果显示，复合后WO3的XRD晶体峰值没有发生变化，强度有所增强；复合后Cu2O的晶体峰值有不同程度的偏移，且峰值减弱。这是由于在制备核壳结构的复合光催化剂过程中，复合导致内层的Cu2O粒径变大，使其峰值发生偏移。由此可见，复合光催化剂的制备，导致原晶体发生了变化。Cu2O\WO3复合光催化剂的SEM电镜分析，分子粒径在10um左右，可以清晰的看出Cu2O立方体表面包裹了一层WO3分子，形成复合物。其比表面积增大，分子间有团聚现象。通过紫外-可见光谱扫描复合光催化剂Cu2O\WO3在可见光范围内有较好的吸收峰，表明其存在可见光催化性能。通过对亚甲基蓝溶液的降解实验得出光催化剂Cu2O\WO3复合在一定程度上提高了光催化剂的催化降解能力，同时降低了催化剂的光腐蚀性。 （4）复合光催化剂降解室内甲醛的实验中，NaOH处理后的聚酯纤维表面最粗糙，聚酯纤维棉负载的催化剂表面均匀。用设计搭建的气态催化系统对负载后的催化剂进行了甲醛降解性能初步测试，结果表明：在初始浓度为0.15mg/m3时，负载Cu2O及负载WO3对甲醛的去除率明显高于未负载的聚酯纤维。负载Cu2O\WO3复合光催化剂的聚酯纤维棉去除率最高，可以达到89.2%。

Cu2O, WO3 have a good response to visible light in photocatalysis has good prospects, has become a hot research. This article was prepared by glucose reduction WO3 prepared Cu2O, chemical precipitation and low temperature hydrothermal method,chemical precipitation core-shell structure WO3/Cu2O prepared composite photocatalyst. By X-ray diffraction (XRD), scanning electron microscopy (SEM), spectroscopy (UV-vis) and Fourier transform infrared spectroscopy to characterize them, using its degradation of methylene blue solution to analyze its photocatalytic properties. And to study the structures photocatalytic reaction system, using polyester fiber cotton load photocatalyst using xenon lamps simulate visible light photocatalytic degradation of formaldehyde experiment. The results showed that: (1) Size reduction method using glucose Cu2O particles of small, generally less than 50nm, more uniform particle size, showing cube or microsphere-based, clear structure, particle integrity. XRD analysis shows the test results, there are five peaks, peaks were 29.64 °, 36.34 °, 42.42 °, 61.32 °, 73.42 ° point, which corresponds to the crystal plane indices are (110), (111), (200), (220) and (311), which is consistent with the standard library Cu2O spectra, showed red-brown powder was prepared Cu2O. Cu2O by the UV-visible spectrum curve at the wavelength of 360nm or more, a significant increase in absorbance, the presence of peaks at about 580nm, i.e., the visible region of the spectrum, indicating a better photocatalytic effect Cu2O under visible light. The FT-IR spectra of Cu2O can be seen in the presence of an oxidizing-OH groups. (2) Were prepared using chemical precipitation and low temperature hydrothermal method WO3 split the two methods, clear crystal structure, smaller particle size. XRD analysis shows the test results, WO3 low temperature prepared at 2θ = 16.50, 25. 60 and 34.90 appeared typical orthorhombic hydrated WO3• H2O three strongest peak. Overall, the method can be easily prepared uniform particle size distribution of nano WO3 powders. WO3 can be seen in the SEM electron microscopy, WO3 smaller particle size, usually around 200nm. Uniform crystal size, surface area, showing flaky crystals, bonding with each other, poor dispersion. WO3 powders prepared by low-temperature hydrothermal uniform particle size to nanometer level. The Fourier Transform Infrared testing can be seen in a clear image 3400 trough, where the presence of a hydroxyl group is OH, prepared as described WO3 photocatalyst having oxidation. (3) Composite light Cu2O\WO3 catalyst was prepared to consider the nuclear shell structure to Cu2O core and shell surface load WO3 was prepared by loading photocatalyst. Upcoming prepared Cu2O voted not to join in forming WO3. Study its photocatalytic properties. XRD analysis shows the result, XRD peak WO3 crystal did not change the composite, respectively, at the 2θ = 31.74,45.52,66.26,75.32 there is a clear peak, the peak corresponding to the original Cu2O crystals have different degrees of offset which process is complex due to the solid solution crystals larger atomic radius will cause an increase of datoms, theta angle decreases, so that the peak to the left. In the preparation of core-shell composite photocatalyst structure, the presence of the complex process that leads to the inner diameter of Cu2O becomes large, so that the peak shift. Thus, the preparation of the composite photocatalyst, leading to changes in the original crystal, thus affecting its photocatalytic properties. XRD analysis to compare. WO3 in the composite peak has increased, decreased peak and Cu2O, and an offset. WO3/Cu2O composite photocatalyst SEM electron microscopy analysis, molecular diameter of about 10um, can clearly be seen that the surface of Cu2O cubes wrapped in a layer of WO3 molecules form a complex. Its specific surface area is increased, agglomeration between molecules. By UV-visible spectral scanning composite photocatalyst WO3/Cu2O better absorb light in the visible range, and after WO3/Cu2O complex, enhances its absorption peaks in the visible range of the visible beneficial to its catalytic properties. (4) Through the degradation of methylene blue solution experiments, Cu2O\WO3 composite photocatalytic degradation of methylene blue solution is more effective than a single Cu2O and WO3 degradation effect. Showed that the composite Cu2O\WO3 improved photocatalytic degradation.