催化效率

这就说明石墨烯/TiO2复合材料会比TiO2拥有更高光催化效率。

It explains that graphene / TiO2 composite has more highlights catalytic efficiency than TiO2 .

mRNA翻译起始区二级结构优化提高（R）-羰基还原酶的表达及催化效率

Improved expression and catalytic efficiency of ( R ) - carbonyl reductase in Escherichia coli by secondary structure optimization of mRNA translation initiation region

提高TiO2的光催化效率是近年来的一个热点研究问题。

To improve the photocatalytic efficiency of TiO2 is a hot research issues in recent years .

但是，纯ZnO光催化效率较低，难以工程化应用。

But photocatalytic efficiency of pure ZnO is lower , so it is hard to apply in the engineering .

为了探索提高光催化效率的方法，采用在TiO2表面掺杂的方式来限制表面类冰结构占据的空间。

In order to improve the photocatalytic efficiency , we have restricted the formation of ice-structure by surface doping .

掺杂TiO2的制备与表征和降解水中污染物的催化效率

Preparation , Characterization of Doped TiO_2 and its Catalytic Efficiency of Degrading Pollutants in Water

当Nd3+掺杂浓度为0.9mol%时，半小时对罗丹明B的光催化效率比未掺杂的TiO2薄膜提高了23.9%。

When the dopant concentration of Nd was 0.9mol % , the photocatalytic remove ratio is 23.9 % higher than the pure film without doped .

很多金属氧化物都被广泛的研究，尽管其掺杂机理仍然不是很清楚，但是在提高TiO2催化效率方面取得了巨大的进展。

Although the doping mechanism is not very clear yet , there is huge progress in improving TiO2 catalytic efficiency .

TiO2与ZnFe2O4薄膜禁带宽度测定及对光催化效率的影响

Measurement of TiO_2 and ZnFe_2O_ 4 films ' Energy-gap and its Effect on Photocatalytic Efficiency

光吸收性能较好的Pd/V2O5-TiO2对CO2吸附能力过强，卧式吸附态脱附温度高，光催化效率不高；

Pd / V2O5-TiO2 semiconductor with better photo absorption performance absorbs CO2 too strongly , thus increasing the desorption temperature of horizontal adsorption state and lowering its quantum efficiency .

二氧化钛作为n型半导体材料因其化学性质稳定，廉价易得，无毒且催化效率高等优点受到人们的广泛关注，在光催化降解环境污染物方面具有很好的应用前景。

Titanium dioxide as a n-type semiconductor material has been widely concerned because of its chemical stability , cheapness , non-toxicity , high catalytic efficiency , and has good prospect in photocatalytic degradation of environmental pollutants .

为了提高TiO2薄膜的光催化效率，利用中频交流磁控溅射技术，采用Ti和Ag金属靶制备了Ag/TiO2复合薄膜。

Ag / TiO2 composite films were successfully prepared using a mid-frequency AC magnetron sputtering technique with pure Ti and Ag targets to increase photocatalytic efficiencies of TiO2 films .

本文采用NiS为助催化剂，在Na2S/Na2SO3作牺牲试剂时CdS的光催化效率得到了很大的提高。

The photocatalytic activity of CdS could be greatly enhanced by loading NiS as cocatalyst and using Na2S / Na2SO3 as sacrificial reagents .

在保证每次镀膜（TiO2）厚度达到300nm的条件下，一次镀膜光催化效率高于多次镀膜；

The photo catalytic efficiency was decreased with the coating every times of the film thickness of 300 nm .

分析了电荷转移能、B-O的结合能、B原子电负性、A、B原子价态、电子构型、掺杂等因素对催化剂光催化效率的影响。

And factors of photocatalytic influence including charge transfer energy 、 B-O bonding energy 、 B atom electrongativity 、 valence of A and B atom 、 electronic conformation and doping were also discussed .

纳米二氧化钛（TiO2）因其比表面积大、稳定性好、无毒性和光催化效率高等优点在有机污染物处理方面得到了极大的重视。

Titanium dioxide ( TiO2 ) has attracted a great deal of attention in organic pollutants treatment because of its large specific surface area , stable chemical properties , nontoxicity and excellent photocatalytic activity .

自从光催化剂TiO2发现以来，科学家不断进行新的尝试，并成功研制了成百上千种光催化剂，且其催化效率不断提高。

Since photocatalyst TiO2 research to manufacture success , the scientist carries on the new trial continuously , and succeed to research to manufacture thousands of photocatalysts , and the catalyst efficiency raises continuously .

为了解决TiO2的负载问题，对分子筛，玻璃珠，硅胶等载体负载TiO2一进行了研究，发现硅胶负载后，TIOZ的催化效率与粉体相比有很大程度的提高。

In order to solve the problem of TiO2 power immobilization , the several types of TiO2-based materials were used such as silica gel , glass bead , and molecular sieve .

然而，纯ZnO存在光谱响应范围窄、电子-空穴易复合等缺点，导致其光催化效率较低，从而限制其应用范围。

But pure ZnO shows some disadvantages which lead to its lower photocatalytic efficiency and thus largely limit the wider applications , such as spectral response range is narrow , the photo-generated electrons and holes easily get combined .

以污水处理为例，TiO2本身对有机物的吸附能力较弱，若采用吸附性载体负载TiO2则可显著提高TiO2的光催化效率。

Take sewage treatment for example , TiO_2 has weak adsorption capability for organic compound by itself . If we introduce adsorptive carriers to load h , Photocatalytic efficiency will increase obviously .

氧化物半导体TiO2是使用最多的光催化剂，但由于其较宽的禁带宽度（3.2eV）限制了其光催化效率的提高。

Oxide semiconductor TiO2 is the common catalyst , but the wide band gap ( 3.2eV ) limits its improvement of photocatalytic properties .

传统MoS2加氢催化剂粒径大、油溶性差而催化效率相对较低。

Conventional molybdenum disulfide hydrogenation catalysts are inferior in catalytic efficiency due to their relatively larger particle size and lower oil-solubility .

结果表明适量的Sn掺杂能有效地提高TiO2纳米管阵列的紫外光波段的光催化效率，我们实验中最佳掺Sn量为5.6at%。

The result showed that doping an appropriate amount of Sn can effectively improve the photocatalytic activity of TiO2 nanotube arrays under UV irradiation , and the optimum dopant amount is found to be 5.6at % in our experiments .

此光催化剂可循环使用，循环使用5次后，Bi（38）ZnO（58）样品的晶体结构基本未变，光催化效率仍保持在98%以上。

Moreover , the crystal structure of Bi_ ( 38 ) ZnO_ ( 58 ) was still the same and its photocatalytic efficiency of Bi_ ( 38 ) ZnO_ ( 58 ) was still above 98 % even after being reused for five times .

但有趣的是，家蚕头部GSTs对CDNB的亲和力和催化效率均高于中肠和脂肪体。

But it is interested that the GSTs in head had higher affinity and catalytic efficiency than the GSTs in fat body and midgut .

TiO2光催化剂带隙较宽，只能吸收紫外光，对太阳能的利用率很低；光生载流子的复合速率高，光催化效率低。

TiO2 photocatalyst can only absorb in the UV region of the solar spectrum due to its wide band gap . The use ratio of solar spectrum is low . The photocatalysis ratio of TiO2 was low because of its high recombination rate of photo-induced carrier .

此外，由于TiO2的量子效率偏低且只能响应紫外光，限制了TiO2的实际应用，可以通过对TiO2改性提高其光催化效率和实现对可见光的响应，更充分地利用光能。

Moreover , the low quantum efficiency and limited absorption in UV light region of TiO2 restrain its application in practice . Modification of TiO2 is effective method to improve the photocatalytic activity and realize absorption of visible light , hence utilize the photo energy more efficiently .

实验部分首先利用粉煤灰和Ti（SO4）2制备固载型光催化剂，然后初步的通过光催化剂对甲基橙的光催化效率进行了验证。

Firstly , the experiment uses the fly ash and Ti ( SO4 ) 2 to make a solid light catalyst , then carried on the discussion towards using up the catalyst to the light catalyst efficiency of a methylic orange .

结果表明为使分相尺寸与TiO2析晶速度相匹配，获得最佳的光催化效率，对不同组成的试样热处理条件以575~600℃/12h为宜。

The result has shown that aim at making the phase separation structure size would match with crystallization rate and obtaining an optimal photodegradation , it was found that the suitable heat-treatment condition was 575 ~ 600 ℃ / 12h however it would slightly change with the composition variations .

VOCl3&1／2Al2Et3Cl3引发体系中Al／V对共聚反应有很大影响，Al／V的最佳范围为20-40，超出这一范围会造成催化效率下降、共聚物的分子量分布变宽。

Al / V can affect the co-polymerization markedly . The optimum range of Al / V is 20-40 . When Al / V is out of this range , efficiency of initiator will decrease and distribution of copolymer molecular weight will become broad .