Results 21 to 30 of about 1,185,342 (166)
ABSTRACT Water pollution is becoming increasingly severe, posing a serious hazard to human health and ecological security. Therefore, it is necessary to develop rapid, sensitive, and universal analytical methods to detect residual pollutants in actual water.
Yi Xing +4 more
wiley +1 more source
ABSTRACT Layered double hydroxides (LDHs) are attractive non‐noble catalysts for overall water splitting (OWS), yet their hydrogen evolution reaction (HER) activity is often limited by suboptimal *H adsorption and a paucity of accessible sites. Herein, we introduce an oxygen‐vacancy (Ov) engineering strategy to construct ultrathin Ni‐Fe LDH nanosheets ...
Qi Liu +8 more
wiley +1 more source
以四苯基硼化钠和尿素作为原料,通过热聚合法,利用热诱导前驱体发生缩聚反应,合成硼掺杂石墨相氮化碳(CNB)。然后,将ZrO2与CNB混合均匀,通过煅烧法制备了不同ZrO2含量的复合光催化剂ZrO2-CNB。以甲基橙作为降解目标化合物,探究了ZrO2-CNB的紫外光催化性能,并通过加入各种自由基清除剂,考察了在紫外光照射条件下光催化反应体系中生成的活性物种。研究表明:在所制备的复合光催化剂ZrO2-CNB中,含有质量分数为0.75%的ZrO2的ZrO2-CNB催化剂具有最高的紫外光催化性能 ...
陈卫, 胡文丽, 崔玉民
doaj
以耐火砖颗粒为载体,用浸涂法制备了负载型TiO2 光催化氧化剂,并设计了一种二相流化床光催化反应器。考察了固相催化剂制备过程中粘结剂的量、载体粒度及催化剂的表面处理方式等因素对催化剂的活性影响。结果表明,在流化床光催化反应器中,利用该方法制备的负载型TiO2 光催化氧化剂,对染料4BS 溶液的降解脱色反应具有很好的光催化活性及光催化效果的稳定性,为光催化技术的实际应用提供了有意义的尝试。
江立文 +3 more
doaj
Aspect Ratio‐Controlled Chiral Nanostructures for Dual‐Mode Breast Cancer Theranostics
ABSTRACT Chiral CdSe/CdS quantum dots (QDs) have emerged as promising platforms for precise cancer diagnosis and therapy due to their unique optical properties and biological interactions. In this study, we systematically investigated the role of aspect ratio (AR) modulation in ultrathin‐shelled chiral CdSe/CdS dot‐in‐rods (DRs) on their performance in
Linxuan Wu +9 more
wiley +1 more source
ABSTRACT Single‐atom catalysts are attractive for CO2 photoreduction due to their maximized atomic utilization and tunable electronic structures. In this study, indium (In) single atoms were incorporated into graphitic carbon nitride (CN) through an impregnation‐assisted thermal polycondensation strategy.
Xueying Guo +6 more
wiley +1 more source
制备了Ce掺杂的TiO2复合SiO2光催化剂(Ce-TiO2/SiO2),使用该光催化剂在模拟太阳光下催化降解亚甲基蓝水溶液,研究了催化剂用量、亚甲基蓝初始质量浓度、溶液pH、无机阴离子对光催化降解效果的影响.结果表明:n(Ce)∶n(Ti)∶n(Si)=0.002∶1∶1时所制催化剂的光催化活性最好;对于2.5 mg/L、pH为11的亚甲基蓝溶液,投加100 mg/L的光催化剂反应2 h可达到最高降解率(92.6%);NO3-、SO42-、Cl-的存在对光催化降解具有抑制作用.
刘瑜 +6 more
doaj
ABSTRACT Photocatalytic hydrogen evolution technology is a crucial approach to achieve efficient solar energy conversion and green hydrogen production. However, traditional semiconductor photocatalysts often face issues such as weak visible‐light response, high photogenerated charge carrier recombination, and poor structural stability, severely ...
Longtao Guo +8 more
wiley +1 more source
制备了天然斜发沸石负载TiO2光催化剂,以染料活性黑溶液为降解目标物,紫外光为光源,在超声波协同作用下光催化降解染料废水,对催化剂的合成条件、催化活性及其重复使用性进行了研究。结果表明,在200℃焙烧温度下,由钛酸四丁酯与斜发沸石复合制备的催化剂具有最大的光催化活性,且其催化活性与纯TiO2相近。制备的催化剂质量稳定,可重复使用。超声波-光催化协同作用对染料的脱色率好于单一的光催化降解作用。
李琰 +5 more
doaj
ABSTRACT Piezocatalytic technology utilizes mechanical strain or stress‐induced piezoelectric phenomena to produce robust internal electric fields, markedly improving the separation efficiency of e−‐h+ pairs. This method has emerged as a focal point in catalysis by removing reliance on conventional light or electrical energy via its mechanical‐to ...
Yue Zhou +5 more
wiley +1 more source

