CN111036234B - 一种光催化剂复合涂层及其制备工艺 - Google Patents
一种光催化剂复合涂层及其制备工艺 Download PDFInfo
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Abstract
本发明公开了一种光催化剂复合涂层的制备工艺,属于材料技术领域。该工艺将制成糊状或膏状的待熔覆粉末通过可控质量的金属注射成形在待熔覆基材表面上,然后在设有刻度压制槽内对基材表面的膏状或糊状待熔覆粉末层进行压制,在基材表面形成积层,然后在热处理炉做200‑400℃的预热,形成预置层,在预置层进行激光选区熔化烧结,形成复合涂层;后关闭热处理炉的盖子形成密闭空间,复合涂层在热处理炉中退火处理,即得一种光催化剂复合涂层。该催化剂复合涂层有效降解有机污染物,具有广阔的应用前景。
Description
技术领域
本发明属于材料技术领域,具体涉及一种光催化剂复合涂层及其制备工艺。
背景技术
随着全球工业化进程的不断推进,环境污染问题日益突出,已经严重影响到人们日常的生产和生活。大气、土壤、水污染等问题越来越困扰人们,引起了社会的极大的关注。其中,水污染的问题尤其引起了人们的担忧。特别是水体污染已经成为全世界普遍关注的问题,极大的威胁了人们的生活水源。为了有效的解决自然环境中的水污染,许多的科研工作者积极地开发一些无毒、低成本、降解水中的污染物的催化剂处理技术和方法。
基于 TiO2具有耐热性好、光催化性强、氧化能力强、化学稳定等优点,具有降解有机物、制氢、杀菌消毒、净水及净化空气等方面。而且去污、抗菌等功能,是一种绿色环保的实用技术,在环境和能源领域有着广泛的应用前景,是理想的环境净化材料。有机磷农药污染严重,光催化降解有机磷能够有效去除环境污染, 达到环保、高效的目的,一直是专家学者的研究重点。但是由于其禁带宽度较宽(3.2eV),决定其只能利用太阳光中很短的一段光波,实际工作中要用到耗能较高的紫外灯,无形中增加了成本。为了有效的利用太阳光,研究能够高效利用可见光的催化剂具有重要的现实意义, 设法使其吸收可见光,具体方法包括金属元素掺杂、非金属元素掺杂、氧化物耦合、贵金属掺杂和染料敏化等。
金属离子(Zn、 Cu、 Pt、 In 等)掺杂以在禁带中形成受主或施主能级,使其带隙变窄,提高其对可见光的利用率,同时还能抑制电子−空穴的复合。
非金属离子(C、 N、 F、 S 等)掺杂可以替代 TiO2中的 O 原子,使价带变宽,带隙变窄,影响 TiO2 的表面性质和内部结构,光谱吸收阈值发生红移,使催化剂具有更好的光吸收能力。
Cu2O 是一种重要的 p 型直接带隙半导体,其禁带宽度为 2.17eV,完全可以被400-600nm 的可见光驱动引发光催化反应,能更充分的利用太阳光。这不仅能够吸附空气中的 O2,O2俘获催化剂表面的光生电子,从而抑制了电子与空穴的复合,而且还可以解决TiO2催化剂的禁带宽度问题。可见,Cu2O 纳米晶薄膜具有广泛的应用前景。 Cu2O 是一种重要的 p 型直接带隙半导体,其禁带宽度为 2.17eV,完全可以被 400-600nm 的可见光驱动引发光催化反应,能更充分的利用太阳光。这不仅能够吸附空气中的 O2,O2俘获催化剂表面的光生电子,从而抑制了电子与空穴的复合,而且还可以解决催化剂的禁带宽度问题。可见,Cu2O 纳米晶薄膜具有广泛的应用前景。
石墨烯是一种由单层碳原子紧密堆积而成的单层或少层的新型二维碳纳米材料具有优异的力学性能,高热导率,巨大的比表面积和优良的导电性也在电化学,纳米复合材料,超级电容器,电池添加剂和耐蚀涂层等领域有很大的应用前景。石墨烯是碳原子以sp2杂化连接而成的单原子层结构,这一独特的二维结构使得石墨烯具有优异的光电性能、热稳定性以及化学性能。Ag作为光生电子捕获剂抑制了光生载流子的复合,同时Cu2O半导体复合,扩大TiO2可见光吸收率。 如何改性TiO2使其在可见光甚至是室内光源的激发下产生活性一直是研究的热点。
在养殖池中,其水液的污染源主要来自水中生物的排泄物或喂食水中生物的饲料残饵等有机物,因该些有机物被微生物分解后,常导致池水中氨氮与硝酸盐氮等无机氮化合物的累积,造成池水优养化,会对水产动物产生毒害,引发水产动物的大量死亡,以致降低养殖成效,故池水中的氨氮必须予以去除据此,本发明可应用于池水净化装置,具杀菌功效,价廉、无毒、催化性能高、氧化能力强、稳定性好等性质,在太阳光的照射下能产生氧化性极强的羟基自由基,能够氧化降解有机物,使其转化为 CO2、H2O 以及无机物,降解速度快,无二次污染,为降解处理有机污染物如磷农药, 甲基橙, 染料罗丹明, 二氯苯酚 提供了新思路;提供在水处理、空气净化、杀菌抗菌、自清洁等光催化领域具有广阔的应用前景。
发明内容
本发明的目的在于针对现有技术的不足,提供一种光催化剂复合涂层及其制备工艺。该工艺使TiO2的光催化性能更强;制备所得光催化剂利用可见光进行激发,并且有高的光利用率,其与污染物分子接触,相互作用实现催化或转化效应,使周围的氧气及水分子激发成极具氧化力的自由负离子,从而达到降解环境中有害有机物质的目的,该方法不会造成资源浪费与附加污染的形成,且操作简便,成本较低,是一种绿色环保的高效处理技术。该催化剂复合涂层能应用于水净化装置上降解环境中有害有机物质、异味、微生物等,兼具杀菌效果,提高了净化的效果。
为了解决上述技术问题,本发明采用的技术方案为:
一种光催化剂涂层的制备工艺,将制成糊状或膏状的待熔覆粉末通过金属注射成形在待熔覆基材表面上,然后在设有刻度的压制槽内对基材表面的覆液体状或膏状或糊状体的待熔覆粉末进行压制,挤压到基材表面上形成积层,然后在热处理炉预热,形成预置层,该预置层于高温环境进行激光选区熔化烧结,形成复合涂层;通过光学扫描法测量复合涂层表面微观形貌,通过X射线衍射仪实时监控应力变化,精准控制复合涂层质量;应用光学传感器法实时检查表面形貌图像,在激光选区熔化烧结过程中实时显示粗糙度值;后关闭热处理炉的盖子形成密闭空间,复合涂层在热处理炉中退火处理,即得光催化剂复合涂层。
一种光催化剂涂层的制备工艺,包括以下步骤:
(1)基材预处理:清理掉基材表面的灰尘、油垢和锈蚀;
(2)待熔覆粉末制备:将粉末混合物溶于无水乙醇与钛酸四丁酯的混合溶液中,于烧杯中混合搅拌至凝胶状,然后静置陈化24h;将陈化的胶体在微波反应器中干燥,取出研成细粉,将得到的细粉在马弗炉中焙烧,取出研磨成混合粉末,接着将混合粉料均匀混入粘接剂,制成糊状或膏状待熔覆粉末,备用;
(3)金属注射成形:将步骤(2)的糊状或膏状待熔覆粉末以可控质量的金属注射成形的方式铺在基材表面;
(4)压制预置层:在设有刻度的压制槽内对步骤(3)基材表面的待覆粉末进行压制,挤压膏状或糊状待覆粉末层至熔化烧结的厚度,后拆开压制槽边,于基材表面形成积层,然后在热处理炉做200- 400oC的预热,形成预置层;
(5)对预置层进行激光选区熔化烧结:用激光器对准基体上形成的预置层,并在热处理炉200-400oC预热保温的保护气氛下进行激光选区熔化烧结,形成复合涂层;应用光学系统,通过光学扫描法测量复合涂层表面微观形貌;经光学传感器实时检查表面形貌图像,在激光选区熔化烧结过程中用X射线衍射仪实时监控应力变化并显示涂层表面形貌,实时显示粗糙度值,精准控制复合涂层质量; 该光学系统由激光器、镜头阵列和测量激光组成;后关闭热处理炉的盖子形成密闭空间,对复合涂层以每分钟10-15°C加热至500-650°C于热处理炉中维持3-5小时, 后退火处理以每分钟10-15°C降温至室温,即得光催化剂复合涂层。
上述步骤(1)中所述基材包括硅基类、金属类、玻璃类、陶瓷类、吸附材料类、或者它们的任意组合。
上述步骤(1)中基材预处理具体为:基材表面预先进行打磨,然后辅之以丙酮和无水乙醇清洗,清理基材表面的灰尘、油垢和锈蚀。
上述步骤(2)中所述粉末混合物为:Ag粉末、石墨烯粉末、Cu2O粉末与TiO2粉末按质量比为(0.1~1):(0.2~1.5):(0.5~2.5):(0.5~5.0)的比例混合而成。所述无水乙醇与钛酸四丁酯混合溶液中无水乙醇与钛酸四丁酯的体积比为1:1;所述粉末混合物与无水乙醇与钛酸四丁酯混合溶液的质量体积比为1g : 0.05mL ~ 1g : 0.1mL;所述混合粉料与粘接剂的的质量体积比为2g : 0.05mL ~ 2g :0.1mL。
上述步骤(2)中所述粘接剂包括:环氧树脂、丙烯酸树脂、 聚酯树脂、氯乙烯树脂、醇酸树脂、有机硅树脂或纤维素类树脂中的一种或至少两种的组合。
上述步骤(3)中,金属注射成形的工艺参数为:注射温度90~150℃,注射时间5~15s,注射压力80~160Mpa,保压时间0.5~5s。
上述步骤(5)中激光选区熔化成形设备烧结的工艺参数为:功率为130-170W,扫描速度 800-1200 mm/s, 扫描间距0.04-0.08mm,铺粉厚度 20-50μm,光斑直径0.05-0.15mm,氩气100-300ppm,搭接率10~80μm,成形型态为平行或斜角45度或垂直。
一种上述工艺制备的光催化剂复合涂层。
上述光催化剂复合涂层在有机污染物降解中的应用。
本发明具有如下优点:
本发明利用热处理炉在激光选区熔化烧结的前后进行控温处理,从而对基体与预置层进行热处理,改善基体与预置层速冷速热导致熔覆层产生裂纹以及气孔的问题,有效缓解由于速冷速热效应所带来的残余应力,稳定尺寸,减少变形与裂纹倾向;细化熔覆层晶粒,调整熔覆层组织,消除熔覆层组织缺陷,提高熔覆层的致密程度。本发明以Cu2O/ TiO2作为载体,并在此载体上Ag修饰负载纳米石墨烯得到具备较强光催化性能的Cu2O/ TiO2复合光催化剂;该光催化剂利用可见光进行激发,并且有高的光利用率,其与有机污染物分子接触,相互作用实现催化或转化效应,使周围的氧气及水分子激发成极具氧化力的自由负离子,从而达到降解环境中有害有机物质的目的,在有机污染物,水处理、空气净化、杀菌抗菌、自清洁等光催化领域具有广阔的应用前景。该方法不会造成资源浪费与附加污染的形成,且操作简便,成本较低,是一种绿色环保的高效处理技术。
具体实施方式:
为了使本发明所述的内容更加便于理解,下面结合具体实施方式对本发明所述的技术方案做进一步的说明,但是下述的实例仅仅是本发明其中的例子而已,并不代表本发明所限定的权利保护范围,本发明的权利保护范围以权利要求书为准。
实施例一
一种光催化剂涂层的制备工艺,包括以下步骤:
(1)基材预处理:清理掉基材表面的灰尘、油垢和锈蚀; 所述基体为陶瓷;
(2)待熔覆粉末的制备: 将Ag粉末、石墨烯粉末、Cu2O粉末与TiO2粉末按质量比为0.1:0.2:0.5:0.5的比例混合制得粉末混合物;然后将10g粉末混合物溶于 0.5mL 无水乙醇与钛酸四丁酯(体积比1:1)的混合溶液中,于烧杯中混合搅拌,持续搅拌至凝胶状,静置陈化24h;将制备好的胶体在微波反应器中干燥,取出研成细粉;将得到的细粉在马弗炉中焙烧,取出研磨成混合粉末,接着将2g混合粉料均匀混入0.05mL 环氧树脂粘接剂中,制成糊状待熔覆粉末,备用;
(3)金属注射成形:将步骤(2)备用的糊状或膏状的待熔覆粉末以金属注射成形的方式铺在基材表面;金属注射成形法的工艺参数:注射温度90℃,注射时间5s,注射压力80Mpa,保压时间0.5s;
(4) 压制预置层:在设有刻度压制槽内对步骤(3)基材表面的待熔覆粉末进行压制,挤压糊状或膏状待熔覆粉末至熔化烧结的厚度20μm,,后拆开压制槽边,于基材表面形成积层,然后在热处理炉做200oC的预热,形成预置层;
(5)对预置层进行激光选区熔化烧结:用激光器对准基体上形成的预置层并在热处理炉400℃预热的保护气氛下进行激光选区熔化烧结,形成复合涂层;通过光学扫描法测量复合涂层表面微观形貌;经光学传感器法来实时检查表面形貌图像,在激光选区熔化烧结过程中用X射线衍射仪实时监控应力变化并显示涂层表面粗糙度值10±2μm;后关闭热处理炉的盖子形成密闭空间,对复合涂层以每分钟10°C加热至650°C于热处理炉中维持3小时, 后退火处理以每分钟10°C降温至室温,得到光催化剂复合涂层。激光选区熔化烧结的各工艺参数如下:功率为130W,扫描速度 800mm/s, 扫描间距0.04mm,铺粉厚度 20μm,光斑直径0.05mm,氩气100ppm, 搭接率10μm,成形型态为平行。
实施例二:
一种光催化剂涂层的制备工艺,包括以下步骤:
(1)基材预处理:清理掉金属基材表面的灰尘、油垢和锈蚀;
(2)待熔覆粉末的制备:将Ag粉末、石墨烯粉末、Cu2O粉末与TiO2粉末按质量比为1:1.5:2.5:5的比例混合制得粉末混合物;然后将100g 粉末混合物溶于 10mL无水乙醇与钛酸四丁酯(体积比1:1)的混合溶液中,于烧杯中混合搅拌,持续搅拌至凝胶状,静置陈化24h。将制备好的胶体在微波反应器中干燥,取出研成细粉,将得到的细粉在马弗炉中焙烧,取出研磨成混合粉末,接着将20g 混合粉料均匀混入1mL氯乙烯树脂粘接剂,制成糊状或膏状待熔覆粉末备用;
(3)金属注射成形:将步骤(2)备用的糊状或膏状的待熔覆粉末以金属注射成形的方式铺在基材表面;金属注射成型法的工艺参数如下:注射温度120℃,注射时间10s,注射压力120Mpa,保压时间3s。
(4)压制预置层:在设有刻度压制槽内对步骤(3)基材表面的待熔覆粉末进行压制,挤压膏状或糊状待熔覆粉末层至熔化烧结的厚度 35μm,后拆开压制槽边,于基材表面形成积层,然后在热处理炉做300oC的预热,形成预置层;
(5)对预置层进行激光选区熔化烧结:用激光器对准基体上形成的预置层并在热处理炉200℃预热的保护气氛下进行激光选区熔化烧结,形成复合涂层;通过光学扫描法测量复合涂层表面微观形貌;经光学传感器法来实时检查表面形貌图像,在激光选区熔化烧结过程中用X射线衍射仪实时监控应力变化并显示涂层表面粗糙度值15±3μm;后关闭热处理炉的盖子形成密闭空间,对复合涂层以每分钟13°C加热至600°C于热处理炉中维持4小时, 后退火处理以每分钟13°C降温至室温,即得到光催化剂复合涂层。激光选区熔化成形设备烧结的各工艺参数如下:功率为150W,扫描速度 1000 mm/s, 扫描间距0.06mm,铺粉厚度 35μm,光斑直径0.1mm,氩气200ppm, 搭接率45μm,成形型态为斜角45度。
实施例三:
一种光催化剂涂层的制备工艺,包括以下步骤:
(1)基材预处理:清理掉硅基基材表面的灰尘、油垢和锈蚀;
(2)待熔覆粉末的制备:将Ag粉末、石墨烯粉末、Cu2O粉末与TiO2粉末按质量比为0.5:1:1.5:3 的比例混合;然后将10g 粉末混合物溶于0.8mL无水乙醇与钛酸四丁酯(体积比1:1)的混合溶液中,于烧杯中混合搅拌,持续搅拌至凝胶状,静置陈化24h;将制备好的胶体在微波反应器中干燥,取出研成细粉,将得到的细粉在马弗炉中焙烧,取出研磨成混合粉末,接着将 2g混合粉料均匀混入0.08mL丙烯酸树脂粘接剂,制成糊状或膏状待熔覆粉末,备用;
(3)金属注射成形:将步骤(2)备用的膏状或糊状的待熔覆粉末以金属注射成形的方式铺在基材的表面;金属注射成形的工艺参数如下:注射温度150℃,注射时间15s,注射压力160Mpa,保压时间5s。
(4) 压制预置层:在设有刻度压制槽内对步骤(3)基材表面的待熔覆粉末进行压制,挤压膏状或糊状待熔覆粉末层至熔化烧结的厚度50μm,后拆开压制槽边,于基材表面形成积层,然后在热处理炉做400oC的预热,形成预置层;
(5)对预置层进行激光选区熔化烧结:用激光器对准基体上形成的预置层并在热处理炉中300℃预热的保护气氛下进行激光选区熔化烧结,形成复合涂层;通过光学扫描法测量复合涂层表面微观形貌;经光学传感器法来实时检查表面形貌图像,在激光选区熔化烧结过程中用X射线衍射仪实时监控应力变化并显示涂层表面粗糙度值6±2μm;后关闭热处理炉的盖子形成密闭空间,对复合涂层以每分钟15°C加热至500°C于热处理炉中维持5小时, 后退火处理以每分钟15°C降温至室温,即得光催化剂复合涂层。激光选区熔化成形设备烧结的各工艺参数如下:功率为170W,扫描速度 1200 mm/s, 扫描间距0.08mm,铺粉厚度50μm,光斑直径0.15mm,氩气300ppm, 搭接率80μm,成形型态为垂直。
对上述实施例中制备的光催化剂复合涂层进行性能测试,结果请见表1,采用本发明的一种光催化剂复合涂层,相比于传统的二氧化钛光催化剂,具有以下优点:
本发明工艺制备的光催化剂复合涂层中粉末完全熔融, 无变形,无气孔,晶粒细小的显微组织, 致密度高且均匀;对本发明制备光催化剂涂层表面的菌落总数进行检测;附着性测试表明结合度高,不易剥落;平均结合强度:20-50N;本发明制备的光催化剂涂层对丙酮的光催化降解率是纯 TiO2 的 1.7 倍,对亚甲基蓝的光催化降解率是纯 TiO2 的2.8;对双酚A 的光催化降解速率是纯 TiO2 的 2.93 倍;对甲醛气体降解率为92. 8%;对亚甲基蓝降解率为90.%以上;对甲基橙溶液光降解20 min ,脱色率达到 95.60 %;对罗丹明B降解率为93.%以上。本发明的一种光催化剂复合涂层,将复合材料的光谱响应范围拓展至可见光区,提高了对可见光的利用率,且复合材料的光催化活性得到显着增强,在可见光条件下,对有机污染物的降解率明显高于TiO2,且光催化剂涂层的稳定性有所提高,并且制备的光催化剂涂层的光催化活性也得到了明显的提高。本申请光催化剂涂层技术对废水以及空气中的污染物表现出更强的降解性能,尤其是对亚甲基蓝、罗丹明 B、甲基橙、2,4-二氯苯氧乙酸等有机污染物。本发明的光催化剂涂层不会造成资源浪费与附加污染的形成,且操作简便,成本较低,是一种绿色环保的高效处理技术:
表1
本发明以Cu2O/ TiO2作为载体,并在此载体上Ag修饰负载纳米石墨烯得到具备较强光催化性能的Cu2O/ TiO2复合光催化剂;本发明复合材料与纯 TiO2 相比由于石墨烯的加入使得复合材料的光催化活性显着提高,该光催化剂利用可见光进行激发,并且有高的光利用率,其与污染物分子接触,相互作用实现催化或转化效应,从而达到降解环境中有害有机物质的目的,在光催化降解有机污染物,水处理、空气净化、杀菌抗菌、自清洁等光催化领域具有广阔的应用前景。该方法不会造成资源浪费与附加污染的形成,且操作简便,成本较低,是一种绿色环保的高效处理技术。
以上说明仅为本发明的应用实施例而已,本发明的保护范围不限于此。本技术领域的技术人员在本发明基础上所做的等同替代或变换,均应包含在本发明技术方案的保护范围之内。本发明的保护范围以权利要求书为准。
Claims (8)
1.一种光催化剂复合涂层的制备工艺,其特征在于:将糊状或膏状的待熔覆粉末通过可控质量的金属注射成形在待熔覆基材表面,然后在设有刻度的压制槽内对基材表面的膏状或糊状待熔覆粉末进行压制,在基材表面形成积层,然后在热处理炉预热形成预置层,该预置层于高温环境进行激光选区熔化烧结,形成复合涂层,通过光学扫描法测量复合涂层表面微观形貌,通过X射线衍射仪实时监控应力变化,精准控制复合涂层质量; 应用光学传感器法实时检查表面形貌图像,在激光选区熔化烧结过程中实时显示粗糙度值;后关闭热处理炉的盖子形成密闭空间,复合涂层在热处理炉中退火处理,即得光催化剂复合涂层;
包括以下步骤:
(1)基材预处理:清理掉基材表面的灰尘、油垢和锈蚀;
(2)待熔覆粉末制备:将粉末混合物溶于无水乙醇与钛酸四丁酯混合溶液中,于烧杯中混合搅拌至凝胶状,然后静置陈化24h;将陈化的胶体在微波反应器中干燥,取出研成细粉,将得到的细粉在马弗炉中焙烧,取出研磨成混合粉末,接着将混合粉料均匀混入粘接剂,制成糊状或膏状待熔覆粉末,备用;
(3)金属注射成形:将步骤(2)的糊状或膏状待熔覆粉末以可控质量的金属注射成形的方式铺在基材表面;
(4)压制预置层:在设有刻度的压制槽内对步骤(3)基材表面的待覆粉末进行压制,挤压膏状或糊状待覆粉末层至熔化烧结的厚度,后拆开压制槽边,于基材表面形成积层,然后在热处理炉做200- 400oC的预热,形成预置层;
(5)对预置层进行激光选区熔化烧结:用激光器对准基体上形成的预置层,并在热处理炉200- 400oC预热保温的保护气氛下进行激光选区熔化烧结,形成复合涂层;应用光学系统,通过光学扫描法测量复合涂层表面微观形貌,经光学传感器实时检查表面形貌图像,在激光选区熔化烧结过程中用X射线衍射仪实时监控应力变化并显示涂层表面形貌,实时显示粗糙度值,精准控制复合涂层质量,该光学系统由激光器、镜头阵列和测量激光组成;后关闭热处理炉的盖子形成密闭空间,对复合涂层以每分钟10-15°C加热至500-650°C于热处理炉中维持3-5小时, 后退火处理以每分钟10-15°C降温至室温,即得光催化剂复合涂层;
步骤(2)中所述粉末混合物为:Ag粉末、石墨烯粉末、Cu2O粉末与TiO2粉末按质量比为(0.1~1):(0.2~1.5):(0.5~2.5):(0.5~5.0)的比例混合而成;所述无水乙醇与钛酸四丁酯混合溶液中无水乙醇与钛酸四丁酯的体积比为1:1;所述粉末混合物与无水乙醇与钛酸四丁酯混合溶液的质量体积比为1g : 0.05mL ~ 1g : 0.1mL;所述混合粉料与粘接剂的的质量体积比为2g : 0.05mL ~ 2g : 0.1mL。
2.根据权利要求1所述的一种光催化剂复合涂层的制备工艺,其特征在于:步骤(1)中所述基材包括硅基类、金属类、玻璃类、陶瓷类、吸附材料类、或者它们的任意组合。
3.根据权利要求1所述的一种光催化剂复合涂层的制备工艺,其特征在于:步骤(1)中基材预处理具体为:基材表面预先进行打磨,然后辅之以丙酮和无水乙醇清洗,清理基材表面的灰尘、油垢和锈蚀。
4.根据权利要求1所述的一种光催化剂复合涂层的制备工艺,其特征在于:步骤(2)中所述粘接剂选自环氧树脂、丙烯酸树脂、 聚酯树脂、氯乙烯树脂、醇酸树脂、有机硅树脂或纤维素类树脂中的一种或至少两种的组合。
5.根据权利要求1所述的一种光催化剂复合涂层的制备工艺,其特征在于:步骤(3)中,金属注射成形的工艺参数为:注射温度90~150℃,注射时间5~15s,注射压力80~160Mpa,保压时间0.5~5s。
6.根据权利要求1所述的一种光催化剂复合涂层的制备工艺,其特征在于:步骤(5)中激光选区熔化成形设备烧结的工艺参数为:功率为130-170W,扫描速度 800-1200 mm/s,扫描间距0.04-0.08mm,铺粉厚度 20-50μm,光斑直径0.05-0.15mm,氩气100-300ppm,搭接率10~80μm,成形型态为平行或斜角45度或垂直。
7.一种如权利要求1-6任一项所述制备工艺制备的光催化剂复合涂层。
8.根据权利要求7所述的一种光催化剂复合涂层在有机污染物降解中的应用。
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